Skipping timepiece display mechanism with rollers

Abstract

A roller-type jumping clockwork display mechanism (100), each display comprising a roller (1, 1A, 1B, 2, 3, 3A, 3B, 4) and / or a combination roller (10) comprising two rollers (1A, 1B, 3A, 3B) internal to one another, held in the rest position by first elastic return means (311, 312, 313, 314, 316), at least one display being rotatable by the movement of at least one rocker (11, 12, 13, 14, 15, 16) whose fall is controlled or prevented by at least one cam (21, 22, 23, 24, 244, 245, 246, 247) driven by a movement (500), and at least one triggering or correction rocker (11, 12, 13, 14, 15, 16) is arranged to cooperate simultaneously in support with two cams (21, 22, 23, 24, 244, 245, 246, 247) towards which it is recalled by second elastic return means (119, 129, 139, 149, 159, 169).

Description

Domaine de l'invention

[0001] The invention relates to a jumping roller clock display mechanism.

[0002] The invention also relates to a timepiece, in particular a watch, comprising at least one movement arranged to drive cams included in such a jumping roller timepiece display mechanism.

[0003] The invention relates to the field of watch display mechanisms. Arrière-plan de l'invention

[0004] It is often difficult to accommodate different displays on a timepiece, especially when it is small in size like a watch.

[0005] And it is important to easily distinguish a primary display from a secondary display, without any risk of confusion.

[0006] One solution is to use conventional displays, such as hands or discs, for a first display, and a roller display for a second display. However, a roller display for a watch requires a significant volume, and is difficult to implement in a watch. In addition, in order to avoid doubts of interpretation when changing the time or day, it is preferable to create an instantaneous jumping display, which is more complex. These constraints are further amplified when this second display concerns quantities with different units from those of the first display, which requires a conversion mechanism further complicating the construction of the watch. However, there are documents, such as CH705476A2 which propose jumping roller display mechanisms. Résumé de l'invention

[0007] The invention aims to develop a roller display for an instantaneous jump watch, thus offering the best display guarantees and reasonable size, compatible with the volume of a watch.

[0008] The invention is disclosed for the particular case of a watch for a space mission to the planet Mars, where the main display relates to the terrestrial time, while the secondary roller display relates to the Martian time.

[0009] For this purpose, the invention relates to a jumping roller clock display mechanism according to claim 1.

[0010] The invention also relates to a timepiece, in particular a watch, comprising at least one movement arranged to drive cams included in such a jumping roller timepiece display mechanism. Description sommaire des dessins

[0011] Other characteristics and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings, where a particular embodiment of the invention is illustrated for the particular and non-limiting case of the mechanical digital display of the hours and minutes, on four digits, with instantaneous jump, and where: there figure 1 represents, schematically and in perspective, a dial bearing minute and hour windows through which are visible groups of display rollers, respectively for the minutes and hours, which dial surmounts a plate which carries these rollers and the other constituents of a jumping display mechanism, with instantaneous jumping, according to the invention; the figure 2 is the reverse shot of the figure 1 and shows the underside of the same mechanism, with in particular the different trigger or correction levers, and part of their return springs; the hour rollers are visible in the lower part towards the middle of the figure; the common pivot axis of the rollers is represented by a mixed line; the common pivot axis of the levers is also represented by another mixed line; the figure 3 represents, schematically and in perspective, a minute unit roller according to the invention, which is a combined roller which comprises, represented separately from left to right, an inner roller, an outer roller with its aperture, and the assembly consisting of this inner roller mounted in this outer roller; the hour unit roller, not illustrated, is constructed in a similar manner; the figure 4 represents, schematically and in perspective, a tens of minutes roller, which laterally carries a tens of minutes clover comprising six radial grooves which are arranged to cooperate with a star lug which comprises a star with lugs coupled with a Maltese cross, and which carries a support lug, in the form of a cubic block, arranged to serve as a stop support for a rocker limiting finger; the figure 5 represents, schematically and in perspective, a roller of tens of hours, the shaft of which has a drive square, and which laterally carries three tenons or planet carrier pivots for a clutch mechanism; the figure 6 represents a coding of the display of the minutes, according to which the particular, non-limiting variant of the mechanism is constructed, which is illustrated by the figures, on the basis of the rollers of the figures 3 et 4 ; there figure 7 represents a coding of the hour display, according to which the particular, non-limiting, variant of the mechanism is constructed, which is illustrated by the figures, on the basis of the rollers illustrated in figures 3 et 5 ; there figure 8 represents, schematically and in perspective, on the right side a first group of displays which is the group of minute displays, and includes, from right to left, the roller of the minute units of the figure 3 and the roll of tens of minutes of the figure 4 , and, on the left side, a second group of displays which is the group of hour displays and includes, from right to left, the hour unit roller, similar to the figure 3 , and the roll of tens of hours of the figure 5 ; these four rollers are coaxial, and each of them is connected to a star held in the rest position by a jumper; the roller of the tens of hours carries laterally a clover similar to that carried by the roller of the tens of minutes, this clover is integral with a self-locking wheel of a clutch mechanism, in the teeth of which can be locked satellites mounted loosely on the tenons or pivots carrying the satellite of the figure 5 , to cause the rotation of this roller for tens of hours by clutching this wheel, while the disengagement of the satellites causes the disengagement; the figure 9 represents, schematically and in side view, the control of the minute release lever, for the control of the inner roller of the combined minute unit roller; this lever is pivoted in the lower left part of the figure, and subjected to the action of a return spring which tends to press a drive finger, which the lever comprises, on a star which this inner roller comprises and which is itself subjected to the return torque of a jumper to keep it in the rest position;this lever carries, between its pivot and its distal drive finger, on the one hand a ten-minute feeler finger, which is arranged to cooperate in support with a ten-minute cam which is a straight-edged cam of the crenellated type, and on the other hand a minute feeler roller, which is arranged to bear on the substantially helical track of a minute cam, which cam comprises a device to prevent any recoil at the instant of the jump when the feeler roller leaves the high point of the cam, which is its position in this figure; the ; figure 10 represents the passage of the unit of minute, by the mechanism of the figure 9 , when the ten-minute feeler finger is not stopped by the relief of the ten-minute cam, and just after the feeler roller jumps, when the fall of the rocker has just driven the star of the roller which has turned one position; the figures 11 à 14 are details, in representation in side view, on the opposite side in relation to the figures 9 et 10 , of the sequence of cooperation between the drive finger, which is pivotally mounted and comprises a movable elastic blade between two stops, and the star of the roller; the figure 11 is the resting position, similar to the figure 9 , before the rocker descends; the elastic blade rests on a first stop located on the side of the star; the figure 12 shows, during the descent of the rocker, the contact of the finger with the star, the blade of the finger leaves the first stop and the finger begins to pivot in the direction of the arrow; the figure 13 shows the contact between the finger blade and the second stop, and the drive of the pivoting star, and the rocker accompanies the star for about two thirds of its step before reaching its stop, which ensures the passage of the top of the jumper; the figure 14 shows the rise of the rocker, during which the finger is free, until the return of the finger blade resting on the first limiting stop; the blade is weaker than the star jumper, the blade flexes to pass the top of the star, which therefore cannot be driven again by the finger; the figures 15 et 16 illustrate the minute cam, schematically and in perspective seen from above and below: this minute cam is in two parts, one of which has a substantially helical track, wide enough to be traveled at the same time by two feeler rollers that comprise two neighboring levers, this upper part is mobile in rotation relative to a lower part, with an angular mobility limited by the cooperation of a pin integral with the cam part, with an oblong bean-shaped groove which limits the angle of freedom: thus, during the fall, when the feeler roller of the lever passes the top of the cam, there is no recoil effect, and the fall of the lever is possible to drive the star of the roller, in an instantaneous jump; the figure 17 represents, schematically and in perspective, this minute trigger lever for controlling the inner roller, juxtaposed with the minute trigger lever for controlling the outer roller, whose feeler rollers travel together on this same helical track of the cam, and whose ten-minute feeler fingers are both arranged to cooperate with the same ten-minute cam, which authorizes or prohibits the fall of the lever; this figure also shows the return springs of these two levers; the units roller, on the left in the figure, carries a pin which is intended to cooperate with a groove of a Maltese cross which comprises a ten-minute drive mechanism; the figure 18 is a detail which represents, in a schematic and perspective way, the feeler rollers of the two neighboring levers, which travel together along this same helical track of the minute cam; the figure 19 is similar to the figure 17 , and represents the same assembly shown in the position it occupies a few seconds before the jump, in a display position of the unit of minutes "4", where the outer roller presents its window, while the inner roller presents the number 4; the mechanism is ready to move to a display position "5", where the outer roller presents the number 5, while the inner roller returns to a position where it presents the number 0 and is thus ready to anticipate the passage to the next ten minutes where the inner roller will present its number 0 in the window of the outer roller; neither of these two rockers is here stopped by the ten-minute cam; figure 20 is similar to the figure 19 , and represents the same set after the jump, in an intermediate display configuration where neither of these two rockers is stopped by the ten-minute cam, which can oppose the fall of one of the rockers which runs through it, to let the inner roller or the outer roller turn or not; as a result each rocker has driven its respective roller, and, simultaneously, the outer roller and the inner roller have turned by one position; the figure 21 is similar to the figure 20 , and represents the same set after the next jump for the passage of the display from the display position "5" to the display position "6", where only the outer roller rotates, while the inner roller remains in the position where it presents the number "0"; in fact the inner roller has not rotated, and has remained in its display position, because the rocker corresponding to the display of the inner roller is stopped by the ten-minute cam, its feeler finger being in abutment on the slot of the ten-minute cam, and therefore the inner roller does not rotate, and only the rocker relating to the outer roller falls and makes the latter pivot; the figures 22 et 23 represent, schematically and in perspective seen from two opposite sides, the ten-minute drive mechanism, which surrounds the group of displays comprising the combined roller of the minute units, and the simple roller of the tens of minutes; this mechanism is a mobile with an axis parallel to the axis common to the shafts of the different rollers, and comprises, on the side of the combined roller of the minute units, a Maltese cross whose grooves are arranged to cooperate with the pin, visible on the figure 17 , which carries this combined roller of units, and, on the side of the roller of tens of minutes, and integral in rotation with this Maltese cross, a star with lugs whose lugs are arranged to cooperate with the grooves of the clover of the tens of minutes of the figure 4 ; there figure 24 is similar to the figure 20 , and is completed with the ten-minute drive mechanism of the figures 22 et 23 , and represents the same assembly shown in the position it occupies a few seconds before the jump, in a display position of the minute unit "9", where the outer roller presents the number 9, while the inner roller presents the number 0; the mechanism is ready to move to a display position "10", where the tens roller, until then in the display position "0", will move to the position "1", while, at the combined units roller, the outer roller will present its aperture through which the inner roller will continue, without rotation, to present the number 0; a groove of the Maltese cross of the minute units cooperates with the pin of the units roller; the figure 25 is similar to the figure 24 , and represents the same assembly after the jump, in an intermediate display configuration where neither of these two rockers is stopped by the ten-minute cam; the outer roller of the combined minute unit roller has pivoted, and its pin has rotated the Maltese cross, which, at the other end, has rotated the ten-minute clover, and thus the ten-minute roller; the figure 26 represents, in a similar way to the figure 24 , all the hour and minute displays of the figure 8 , and the trigger levers specific to the hour mechanism, which comprises a combined hour roller with an inner roller in an outer roller, like that of the minutes, and a roller of the tens of hours; a ten-hour drive mechanism surrounds this group of displays, as in the case of the minutes, and operates in a similar manner to that of the minutes; two trigger levers for the inner hour roller and for the outer hour roller are also juxtaposed, and are arranged to cooperate with a single hour cam, and with a combined twenty-four-hour wheel comprising a twenty-four-hour cam and a twelve-hour cam; the operation of the hour passages is similar to the minute passage exposed to the figures 9 à 25 , the only significant variation being the presence of a twelve-hour cam (analogous to the ten-minute cam in its operation); the figure 27 represents, schematically and in perspective, this twenty-four-hour mobile, which groups together a twelve-hour cam of the inner roller rocker, a twelve-hour cam of the outer roller rocker, and a correction cam for managing certain time changes: midnight, one o'clock in the morning, to guarantee the change from the display "4" to the display "0"; this correction cam cooperates with a correction rocker detailed later; the figures 28 à 30 illustrate, in a schematic, partial and perspective way, the synchronization between the display of minutes and that of hours at current times, that is to say other than midnight: the figure 28 represents, a few minutes before a time change, a trigger lever for the inner roller of the hour units, similar to its counterpart for the minutes, and whose feeler finger has just left the hour cam; this lever includes a second finger, which is arranged to cooperate in abutment with a lug included in the clover of the roller of the tens of minutes, which prevents the lever from falling until the roller of the tens of minutes has completed its rotation; the figure 29 represents, at the same time as the figure 28 , the same mechanism, the trigger lever of which the inner roller of the hour units is not shown in order to allow the view of a trigger lever of the outer roller of the hour units, the feeler finger of which has also just left the hour cam; this lever comprises a second finger, which is arranged to cooperate in abutment with a lug which comprises a drive clover kinematically linked to the Maltese cross system of the minutes, and which, in the same way, prevents the lever from falling until the Maltese cross of the minutes has completed its rotation; figure 30 shows the two switches of the figures 28 et 29 , just after the rotation of the tens of minutes roller between its position "5" and its position "0", during which rotation the two lugs leave the path of the rockers, which allows them to fall, and therefore the driving of the hour units roller; the figure 31 illustrates, in a similar way to the figure 26 , the mechanism relating to the hours, which incorporates a correction lever for the hour units which is juxtaposed with the release lever for the inner roller of the hour units, and a correction lever for the tens of hours which is juxtaposed with the release lever for the outer roller of the hour units; the assembly is shown in position at 23:59; the figure 32 represents, schematically and in perspective, the correction lever for the hour units, which has a lateral prominence, which rests on a counterbore of the release lever of the inner roller of the hour units, and which has a drive finger, which is arranged to take place next to the drive finger of the latter, and to cooperate with the same drive star of the inner roller of the hour units; this correction lever for the hour units falls when passing midnight to drive the inner roller of the hours twice, and allow the passage from the display "3" to the display "0", without passing through the display "4"; the same is true at one o'clock in the morning; figure 33 is a detail of the synchronization cooperation between these two levers by pressing one on the other, the lateral prominence resting on the counterbore of the release lever of the inner roller of the hour units which is shown in transparency; the correction lever of the hour units falls with the release lever of the inner roller of the hour units when the latter is released and falls; the figure 34 represents together, schematically and in perspective, the hour units correction lever, and a tens of hour correction lever, which is one of the arrangements necessary to allow, at midnight, the transition from the display “2” to the display “0”, without the entry into operation of a tens drive mechanism by the Maltese cross, as will be explained later; this tens of hour correction lever falls a few minutes before midnight, and rests on the hour units correction lever by means of a synchronizer which is a shaft carried by the tens of hour correction lever parallel to the pivot axis common to the levers, and one bearing surface of which cooperates with a bearing face of the hour units correction lever; the figure 35 represents schematically and in perspective, together and juxtaposed, the trigger lever for the inner hour roller, and the hour unit correction lever, the combination of which allows particular display passages, including the direct passage of the inner hour roller from position “3” to position “0” without rotation of the outer roller, and the passage of the tens of hour roller from position “2” to position “0” without rotating the Maltese cross of the tens drive mechanism; to allow the direct passage of the inner hour roller from position “3”, via position “4” to position “0” without rotation of the outer roller, the hour unit correction lever carries a pivoting hook, which cooperates with a hook actuator carried by the trigger lever for the inner hour roller; as on the figure 33 , we see, juxtaposed, the drive fingers of these two levers, which are arranged to cooperate with the same drive star of the inner roller of the hour units; the correction lever of the hour units comprises a feeler finger, which is arranged to cooperate with the combined twenty-four-hour mobile, and in particular with its outer track;the passage from position "3" to position "4" is conventionally controlled by the drive finger of the release lever for the inner hour roller while the hour unit correction lever is immobilized by this hook, and, at the end of the travel of the release lever for the inner hour roller, its hook actuator releases the hook and authorizes the fall of the hour unit correction lever, released by the twenty-four-hour wheel, and the drive finger of which controls a new rotation of the star of the inner hour roller to display the position "0"; the; figure 36 represents in a schematic and perspective way, in reverse shot of the figure 35 , the cooperation of the hook actuator and the hook; the figure 37 represents, in side view, the position of these two rockers, corresponding to the figure 36 ; we see that the hour unit correction lever carries a pin support finger, with a hook tenon or pivot, as well as a locking pin, which cooperates with a cylindrical track of the hook during part of the angular travel of the latter, and which escapes from it at the end of the angular travel of the hook under the thrust of the hook actuator; the latter is here supported on an oblique track of the hook, while neither of the two levers has pivoted; there figure 38 illustrates the beginning of the fall of the trigger lever for the inner hour roller for the passage from position "3" to position "4"; the hook actuator pushes back the oblique track of the hook, and pivots the hook, which still cooperates with its pin, immobilizing the hour units correction lever; the figure 39 illustrates the end of the fall of the trigger lever for the inner hour roller for the passage from position "3" to position "4"; the hook actuator pushes back the oblique track of the hook, and pivots the hook, which escapes from its pin, releasing the hour units correction lever, which, also released by the twenty-four-hour wheel set, can pivot and drive by its drive finger the hour units roller, which has just briefly passed into position "4" under the action of the fall of the trigger lever for the inner hour roller, towards position "0"; the twenty-four-hour cam is arranged to only allow the fall of the hour units correction lever twice a day, at midnight and at one o'clock in the morning; the figure 40 , similar to the figure 35 , shows the positioning shortly before one o'clock in the morning; the figure 41 , represents, in a schematic and perspective way, the correction switch for tens of hours, already visible on the figure 34 , and its cooperation with a twenty-four-hour cam, located on the twenty-four-hour mobile, to, every day at midnight, release this lever to drive the star linked to the tens of hours roller, to make it pass from position “2” to position “0”; figure 42 , represents, in a schematic and perspective way, the hour and tens of hours rollers, with their tens drive mechanism, in a blocking position at midnight, which requires the installation of a disengaging mechanism, already partially visible on the figure 41 and illustrated, according to a particular variant, in detail by the figures 43 à 47 ; this clutch mechanism includes a self-locking wheel with satellite, similar to that of an automatic reverser, to allow the rotation of the tens of hour roller independently of the drive clover linked to the Maltese cross of the tens drive mechanism; the figure 43 , represents, in a schematic and perspective way, the clover of the roller of tens of hours, under which we see this self-locking wheel cooperating with three satellites; the figure 44 represents, in reverse shot of the figure 43 , the roll of tens of hours comprising three tenons or pivots on which these three satellites pivot; the figure 45 represents, schematically and in perspective in semi-transparency, the hour and tens of hour rollers, the tens drive mechanism, and the disengagement mechanism; when the outer roller of the hour units moves from position "9" to position "0", it activates the Maltese cross, which turns the clover attached to the self-locking wheel; the satellites have a particular non-reversible shape, and lock in the teeth of the self-locking wheel, which causes the rotation of the tens of hour roller; the self-locking wheel and the tens of hour roller rotate clockwise as seen in the figure, and at least one satellite is in overlap with the teeth of the self-locking wheel; the figure 46 illustrates, in a similar way to the figure 45 , the passage from the instant twenty-three hours 59 to the instant zero hours 00, during which the fall of the rocker on the star of the roller of tens of hours makes the latter turn, also in the clockwise direction of the figure; the satellites can then turn freely; the figure 47 illustrates, in end view, the same configuration as the figure 46 ; we distinguish an angular shift of the satellites between them to reduce the blind spot; the figure 48 is a block diagram of a particular embodiment where the digital display mechanism according to the invention is used for displaying Martian time, and which schematizes a gear train, comprising, in sequence, an Earth cannonball making one revolution in twenty-four Earth hours, a timer wheel, a Mars cannonball which makes one revolution in 24.6596 terrestrial hours, a multiplier / demultiplier gear train, a set of cams, which includes the minute cam, the ten-minute cam, the hour cam, the twelve-hour cams, the twenty-four-hour cam, and the correction cam, a set of trigger and correction levers, which includes the trigger lever for the inner minute unit roller, the trigger lever for the outer minute unit roller, the trigger lever for the inner hour unit roller, the trigger lever for the outer hour unit roller, the correction lever for the hour units, and the correction lever for the tens of hours, a set of display rollers, which includes the minute unit roller, the tens of minutes roller, the hour unit roller, and the tens of hours roller; the . figure 49 represents, schematically and in side view, the connection between the Earth causeway and the Mars causeway of the figure 48 , via the timer mobile, which comprises a timer pinion and a timer wheel; the figure 50 represents, in a schematic and perspective way, the multiplier / demultiplier cog of the figure 48 , which comprises, from the Mars cannon-pinion on which the hour cam is located, a first gear train to drive the twenty-four-hour wheel set, and a second gear train to drive the minute cam and the ten-minute cam; this first gear train comprises a timer wheel set for the hours, a twelve-hour wheel set, and the twenty-four-hour wheel set; this second gear train comprises an intermediate wheel set, a multiplier wheel set, a minute wheel set carrying the minute cam, and a ten-minute wheel set carrying the ten-minute cam; the figure 51 is a block diagram representing a timepiece, in particular a watch, which includes a movement which drives the cams of a display mechanism according to the invention, which this timepiece includes. Description détaillée des modes de réalisation préférés

[0012] The invention relates to a roller jumping clock display mechanism 100. This mechanism 100 is an instantaneous jumping mechanism.

[0013] The figures illustrate a particular and non-limiting case where this display mechanism 100 is designed to be integrated into a timepiece, in particular a watch 1000, and constitutes more particularly, in a non-limiting embodiment, a module, of reduced dimensions, with in particular a diameter of the order of 37 mm and a height of approximately 12 mm, and illustrated here in a non-limiting application to the display of hours on two digits and minutes on two digits.

[0014] The height constraint determines certain construction choices, which are detailed below, for application to a watch; the mechanism can naturally be simplified in the case of a clock where the dimensional constraints are less.

[0015] The figures illustrate a non-limiting variant where the display mechanism is separate from the basic movement, and may in particular constitute an independent additional module. In a variant not illustrated, the mechanism may integrate all or part of the basic movement, for example under the return springs of the scales, which will be presented later.

[0016] More particularly, the mechanism 100 comprises, for displaying a quantity, at least one display which comprises a roller 1, 1A, 1B, 2, 3, 3A, 3B, 4, and / or a combined roller 10.

[0017] Such a combined roller 10 comprises at least two rollers 1A, 1B, 3A, 3B, which are internal to each other, the outer roller 1A, 3A, comprising at least one roller window 1C, 3C, which is arranged to allow viewing or reading of the inner roller 1B, 3B. In the non-limiting variant illustrated, the rollers or combined rollers comprise numbers or the like with a height of 2.8 mm, which is compatible with six-position rollers with an external diameter of 6.60 mm, or 6.00 mm for an inner roller in the case of a combined roller. This arrangement ensures readability and minimizes bulk.

[0018] Displaying a digit requires ten positions, for example positions 0 / 1 / 2 / 3 / 4 on the inner reel, and positions 5 / 6 / 7 / 8 / 9 on the outer reel, or five positions on each of the reels.

[0019] More particularly, each roller 1, 1A, 1B, 2, 3, 3A, 3B, 4, or each combined roller 10 has at most six display positions, so as to ensure good readability for the user.

[0020] Thus, the outer roller can have a window instead of a display position, and the inner roller can advantageously have two zero positions, according to the arrangement 0 / 1 / 2 / 3 / 4 / 0, which simplifies the kinematics as will be seen later. The outer roller can have the arrangement 5 / 6 / 7 / 8 / 9 / (), the latter symbol () corresponding to the window opening.

[0021] THE figures 6 et 7 detail a non-limiting coding system used for the production illustrated by the figures.

[0022] Each display is held in the rest position by first elastic return means 311, 312, 313, 314, 316, as detailed below.

[0023] At least one display is movable according to a rotation controlled by the movement of at least one trigger or correction lever 11, 12, 13, 14, 15, 16, which the mechanism 100 comprises, when this lever jumps. The fall of this trigger lever is controlled or prevented by at least one cam 21, 22, 23, 24, 244, 245, 246, 247, which the mechanism 100 comprises, and which is arranged to be driven by a clockwork movement.

[0024] According to the invention, at least one trigger or correction lever 11, 12, 13, 14, 15, 16, is arranged to cooperate simultaneously with at least two cams 21, 22, 23, 24, 244, 245, 246, 247, towards which it is returned by second elastic return means 119, 129, 139, 149, 159, 169.

[0025] More particularly, each trigger or correction lever 11, 12, 13, 14, 15, 16, is arranged to cooperate simultaneously with at least two cams 21, 22, 23, 24, 244, 245, 246, 247, towards which it is returned by second elastic return means 119, 129, 139, 149, 159, 169.

[0026] More particularly, at least two trigger or correction levers 11, 12, 13, 14, 15, 16 are arranged to cooperate simultaneously in support with the same cam 21, 22, 23, 24, 244, 245, 246, 247, towards which they are returned by second elastic return means 119, 129, 139, 149, 159, 169.

[0027] The mechanism 100 comprises at least one trigger lever 11, 12, 13, 14, comprising a first feeler 2111, 2112, 2313, 2314, which is arranged to follow the contour of a rotation control cam 21, 23, which is arranged to cause a jump of a trigger lever 11, 12, 13, 14, in a particular angular position of this rotation control cam 21, 23.

[0028] More particularly, at least one trigger lever 11, 12, 13, 14 is arranged to cooperate simultaneously in support with at least two cams 21, 22, 23, 24, 244, 245, 246, 247, towards which it is returned by second elastic return means 119, 129, 139, 149. More particularly still, each trigger lever 11, 12, 13, 14 is arranged to cooperate simultaneously in support with at least two cams 21, 22, 23, 24, 244, 245, 246, 247, towards which it is returned by second elastic return means 119, 129, 139, 149.

[0029] More particularly, at least one trigger rocker 11, 12, 13, 14, is arranged to prohibit or authorize the fall of another rocker which is a correction rocker 15, 16. More particularly, at least one correction rocker 15, 16, is arranged to control the rotation of the same roller as controls a trigger rocker 11, 12, 13, 14.

[0030] More particularly, at least one correction lever 15, 16 is arranged to control the rotation of a roller alone which does not cooperate with any said trigger lever 11, 12, 13, 14.

[0031] More particularly, the mechanism 100 comprises at least one prohibiting cam 22, 24, 244, 245, 246, 247, which is arranged to prohibit or authorize the fall of such a trigger or correction lever 11, 12, 13, 14, 15, 16, of which a second feeler 2211, 2212, 2413, 2414, 2415, 2416, is arranged to interfere or not with the prohibiting cam 22, 24, 244, 245, 246, 247, depending on the angular position of this prohibiting cam 22, 24, 244, 245, 246, 247.

[0032] For driving one roller by another, at least one roller 1, 1A, 1B, 2, 3, 3A, 3B, 4, or combined roller 10, is movable in rotation controlled by a drive mechanism 50M, 50H, independent of the trigger or correction rockers 11, 12, 13, 14, 15, 16, and which is driven by another roller 1, 1A, 1B, 2, 3, 3A, 3B, 4, or combined roller 10. This drive mechanism 50M, 50H, will be detailed later.

[0033] According to the invention as claimed in the attached set of claims, and as visible in the embodiment illustrated by the figures, the mechanism 100 comprises at least one upstream display assembly 200, the rotations of the upstream rollers 1, 2, which compose it are controlled by upstream triggering rockers 11, 12, and which is arranged to cooperate with a downstream display assembly 300 to which it is juxtaposed and the rotations of the downstream rollers 3, 4, which compose it are controlled by downstream triggering rockers 13, 14.This mechanism 100 comprises at least one such correction flip-flop 15, 16, which is arranged to cooperate with one of the downstream trigger flip-flops 13, 14, and a flip-flop synchronization mechanism 17 between the correction flip-flops 15, 16, when this mechanism 100 comprises several, for controlling the rotation of at least one display of the downstream display assembly 300 into its appropriate positioning at the end of a cycle of the upstream display assembly 200.

[0034] More particularly, the mechanism 100 is arranged to display the value of at least one quantity on a group of displays 90M, 90H, which comprises at least two coaxial displays juxtaposed with each other, each display being constituted by a roller 1, 1A, 1B, 2, 3, 3A, 3B, 4, or by a combined roller 10.

[0035] More particularly, at least one group of displays 90M, 90H, comprises an internal jump control mechanism for triggering the rotation of one of the displays that the group of displays 90M, 90H comprises, at the end of a cycle of another display that is juxtaposed therewith.

[0036] More particularly, at least one trigger or correction rocker 11, 12, 13, 14, 15, 16, is arranged to cooperate with at least one cam 21, 22, 23, 24, 244, 245, 246, 247, to constitute a jump control mechanism for triggering the rotation of one of the displays at the end of a cycle of another display which is juxtaposed therewith.

[0037] The mechanism 100 is more particularly arranged to display the value of at least one quantity on a group of displays 90M, 90H, comprising at least two coaxial elementary displays juxtaposed with each other, each elementary display being constituted by such a roller 1, 1A, 1B, 2, 3, 3A, 3B, 4, or combined roller 10.

[0038] More particularly, at least one said group of displays 90M, 90H, comprises a drive mechanism 50 for triggering the rotation of one of the displays that this group of displays comprises at the end of a cycle of another display that is juxtaposed therewith.

[0039] More particularly, the mechanism 100 is arranged to display the value of at least two quantities, each quantity being displayed on at least one display or group of displays 90M, 90H, and all the displays or groups of displays 90M, 90H are coaxial and juxtaposed two by two.

[0040] More particularly, at least one trigger or correction rocker 11, 12, 13, 14, 15, 16, is arranged to cooperate with at least one cam 21, 22, 23, 24, 244, 245, 246, 247, to constitute a jump control mechanism for triggering the rotation of a display of a group of displays 90M, 90H, at the end of a cycle of another display of another group of displays 90M, 90H, which is juxtaposed therewith.

[0041] Advantageously, the mechanism 100 comprises a roller synchronization mechanism for triggering the rotation of a said downstream display of a group of displays 90M, 90H, at the end of a cycle of another upstream display of another group of displays 90M, 90H, which is juxtaposed therewith. This roller synchronization mechanism comprises blocking means 1380, 1490, of each downstream trigger rocker 13, 14, arranged for the rotation control of the downstream display 3, bearing on lugs 528, 579, carried by the drive mechanism 50 of the upstream display 2, and by the upstream display 2 itself, to block the rotation of each downstream trigger rocker 13, 14, during certain display phases, and to synchronize the jump of these at least two groups of displays 90M, 90H. The detailed operation will be explained later.

[0042] More particularly, the mechanism 100 is arranged to display the value of at least two quantities on at least two groups of displays 90M, 90H, coaxial and juxtaposed to each other. More particularly, at least one group of displays 90M, 90H, comprises at least one trigger or correction rocker 11, 12, 13, 14, 15, 16, which comprises a stop support finger 1390, which is arranged to, in certain relative angular positions, cooperate in stop support with a stop 528 which comprises a roller 1, 1A, 1B, 2, 3, 3A, 3B, 4, of an adjacent group of displays 90M, 90H, to block its rotation during certain display phases, and to synchronize the jump of the at least two groups of displays 90M, 90H.

[0043] The figures illustrate the mechanical digital display of hours and minutes.

[0044] The display of the minutes is made by a roller of the units of minute 1, juxtaposed with a roller of the tens of minute 2, notably visible together through a minute window 5. The roller of the units of minute 1 is such a combined roller 10, and comprises an inner roller 1B, visible through the window 1C of the outer roller 1A, as visible on the figure 3 These two rollers 1 and 2 form a first group of 90M displays which is the group of minute displays.

[0045] The hours are displayed by a roller of the units of the hour 3, juxtaposed with a roller of the tens of the hour 4, in particular visible together through an hour window 6. The roller of the units of the hour 3 is such a combined roller 10, and comprises an inner roller 3B, visible through the window 3C of the outer roller 3A. These two rollers 3 and 4 form a second group of displays 90H which is the group of hour displays.

[0046] There figure 1 illustrates a dial 7 bearing minute and hour windows 5 and 6, and surmounting a plate 8 which carries the rollers and other components of the mechanism 100.

[0047] There figure 2 shows the different trigger and correction switches which are, from left to right: the inner roller minute units trigger rocker 11; the outer roller minute units trigger rocker 12; the hour units correction rocker 15; the inner roller hour units trigger rocker 13; the outer roller hour units trigger rocker 14; the tens of hour correction rocker 16, whose functions are detailed below.

[0048] In a particular and non-limiting manner, the rollers pivot around a common axis R; in a particular and non-limiting manner, the rockers pivot around a common axis B.

[0049] There figure 3 represents a minute unit roller 1 according to the invention, which is a combination roller 10 which comprises, shown separately from left to right, an inner minute roller 1B, an outer minute roller 1A with its minute aperture 1C, and the assembly 1 consisting of this inner roller 1B mounted in this outer roller 1A. The hour unit roller 3 is constructed in a similar manner, with an inner hour roller 3B, an outer hour roller 3A with its aperture 3C.

[0050] More particularly, at least one group of displays 90M, 90H, comprises at least two rollers, one of which displays as a unit an integer multiple of the value of the unit of the other. More particularly still, each group of displays 90M, 90H, comprises at least two rollers, one of which displays as a unit an integer multiple of the value of the unit of the other.

[0051] The display mechanism 100 then comprises, for at least one such group of displays 90M, 90H, at least one drive mechanism 50, for example in the illustrated embodiment a drive mechanism for the tens of minutes 50M, and a drive mechanism for the tens of hours 50H. The purpose of this drive mechanism 50 is to rotate the roller of the multiple by one position when the roller of the sub-multiple has completed the rotation, or rotations, corresponding to all of its display sequences in the step of the multiple. Except in exceptional circumstances which will be detailed later, the rollers of the multiples (of the tens in the present embodiment) are therefore not driven by rockers, but by such a drive mechanism 50.

[0052] This drive mechanism 50, here a drive mechanism of tens of minutes 50M, or a drive mechanism of tens of hours 50H, is driven by the roller of the sub-multiple, here the roller of the units.

[0053] Thus, each group of displays 90M, 90H, comprises at least two rollers 1, 1A, 1B, 2, 3, 3A, 3B, 4, kinematically connected by such a drive mechanism 50, which comprises, in the non-limiting version illustrated by the figures, a Maltese cross 53, 55, which is arranged to be driven in rotation by a pin 109, 319, fixed to the roller of the sub-multiple, and which is integral in rotation with a star with lugs 51, 56, which is arranged to drive by one of its lugs 511, 561, a clover 52, 54, which the roller of the multiple carries, by radial grooves 529, 541. Here, the roller of the sub-multiple, that is to say of the units, drives in rotation a Maltese cross, which drives a star with pins which in turn drives the roller of the multiple, here tens.The unit rollers of minutes 1, and hours 3, thus carry for this purpose respectively pins 109, 319, which are arranged to cooperate with radial grooves 531, 551, which comprise Maltese crosses of minutes 53, or hours 55.

[0054] There figure 4 represents a tens of minutes roller 2, which laterally carries a tens of minutes clover 52, comprising six radial grooves 529, which are arranged to cooperate with a star lug 511 which comprises a star with lugs 51 coupled with a Maltese cross of the minutes 53. This tens of minutes clover 52 carries a support lug 528, here in the form of a cubic block, which is arranged to serve as a stop support for a lever limiting finger 1380 which comprises the hour trigger lever of the inner roller 13, as will be explained later.

[0055] More generally, the clover 52, 54, or the roller of the multiple, carries such a support lug which is arranged to serve as a stop support for a rocker limiting finger which comprises a trigger rocker 11, 12, 13, 14.

[0056] The star with lugs 51, 56, of the drive mechanism 50 of the upstream display 2 is advantageously arranged to drive in rotation, around an axis parallel to its own, a drive clover 57, which carries a rocker stop lug 579 arranged to serve as a stop support for a rocker stop finger 1490 which a trigger rocker 11, 12, 13, 14 comprises.

[0057] There figure 5 represents a roll of tens of hours 4, which similarly bears a clover 54, visible on the figure 45 , and whose shaft comprises a drive square 4160, and which laterally carries three tenons 72 or planet carrier pivots for a disengaging mechanism 70 explained later. This disengaging mechanism 70 has the function of disengaging a drive mechanism 50, to allow the position correction of a roller 1, 1A, 1B, 2, 3, 3A, 3B, 4, directly by a correction rocker 15, 16, and not by a drive mechanism 50.

[0058] The mechanism 100 advantageously comprises at least one combined roller 10, an inner roller 1B, 3B of which is arranged to be driven in rotation by a trigger lever of the inner roller 11, 13, and the outer roller 1A, 3A of which is arranged to be driven by a trigger lever of the outer roller 12, 14, or by a first correction lever 15. In particular, such a combined roller 10 is a sub-multiple roller.

[0059] The inner roller 1B, 3B, is, again, arranged to be driven in rotation by the first correction lever 15, at certain predetermined instants and controlled by a twenty-four hour mobile 24 driven by the movement 500. This first correction lever 15 is juxtaposed with the trigger lever of the inner roller 11, 13, and cooperates with it with the cams of the twenty-four hour mobile 24. The first correction lever 15 has a lateral protrusion 151, which rests on a counterbore 135, of the trigger lever of the inner roller 113. This protrusion 151 rests on the counterbore 135, shortly before a jump controlled by a cam 21, 23, on which bears a feeler 2111, 2313, which the trigger lever of the inner roller 11, 13 comprises.The correction lever 15 also comprises a drive finger 1501, which is arranged to take place next to a drive finger 1101, 1301, of the trigger lever of the inner roller 11, 13, and to cooperate with the same star 411, 413, of this inner roller 1B, 3B, so that, when the trigger lever of the inner roller 11, 13 falls, at an instant controlled by the cam 21, 23, and for a jump authorized by the twenty-four-hour wheel 24, the first correction lever of the hour units 15 also falls to drive in turn the star 411, 413, to thus drive the inner roller 1B, 3B twice.

[0060] Generally, each roller has a shaft, in particular carrying a square, suitable for supporting a star for its rotational drive: we see in particular in the figures the square 4120 for driving roller 1, the square 4140 for roller 3, and the square 4160 for roller 4. It should be noted that certain rollers are not necessarily driven by rockers: this is the case here for the tens of minutes roller 2, which is driven by a 50M tens of minutes drive mechanism with a Maltese cross.

[0061] There figure 6 represents a coding of the display of the minutes, according to which the particular, non-limiting variant of the mechanism is constructed, which is illustrated by the figures, on the basis of the rollers of the figures 3 et 4 . In this particular case, in the combined rollers 10 as used for the display of the units of minutes 1 and the units of hours 3, the inner roller 1B, respectively 3B, has six positions: 0, 1, 2, 3, 4, 5, 0. The outer roller 1A, respectively 3A, has six positions: 5, 6, 7, 8, 9, (). The double parentheses or brackets are used to code the opening that the roller in question has. This particular configuration makes it possible to have the largest numbers in the minimum space requirement, the same driving rocker travel for both rollers, and the same star-jumper assembly, as can be seen in the figures which have many identical elementary components.

[0062] The table of minutes of the figure 6 has six columns: column 1: value of the tens roll 2; column 2: value of the outer units roll 1A; column 3: value of the inner units roll 1B; column 4: number of rotations of the roll in column 2; column 5: number of rotations of the roll in column 3; column 6: number of rotations of the roll in column 1.

[0063] One line corresponds to one minute.

[0064] The double parentheses or brackets correspond to the opening of the roll.

[0065] The table of the figure 6 only shows the display of minutes "00" to "30", because we notice that there is a periodicity of ten minutes.

[0066] Note that over a period of ten minutes, the inner roller 1B and the outer roller 1A each rotate six times.

[0067] More particularly, when displaying each unit position "5", the inner roller 1B also rotates so as to pre-position itself on the value "0" to be ready to display it during the next ten.

[0068] Therefore, the display of the minutes requires a 21 minute cam, and a 22 minute cam.

[0069] Similarly, the table of hours of the figure 7 has seven columns: column 1: value of the tens roll 4; column 2: value of the outer units roll 3A; column 3: value of the inner units roll 3B; column 4: number of rotations of the roll in column 2; column 5: number of rotations of the roll in column 3; column 6: number of rotations of the roll in column 1; column 7: need for correction, in particular by a double rotation.

[0070] One line corresponds to one hour.

[0071] The table of the figure 7 shows the display of hours "00" to "24".

[0072] We note that column 4 and column 5 of this table of hours have a periodicity of twelve hours.

[0073] Column 7 shows that when moving from position "23" to position "00", and when moving from position "00" to position "01", the inner roller 3B must rotate twice.

[0074] Column 6 shows that, when the clock passes at midnight, which does not fit into the general framework, the roller must be activated by a special mechanism.

[0075] Therefore, the display of hours requires a 23 hour cam, and a twelve o'clock cam (columns 4 and 5 of the table of figure 7 ) which will be described here in the form of a first cam of twelve hours 244, corresponding to column 4 of the table of the figure 7 , and a second twelve-hour cam 245 corresponding to column 5 of the table of the figure 7 , a twenty-four hour cam 246 (column 6 of the table of the figure 7 ), and a correction cam 247 (column 7 of the table of the figure 7 ) here comprising a notch 249. In the illustrated, non-limiting embodiment, a single twenty-four-hour mobile 24 groups together the twelve-hour, twenty-four-hour, and correction cams, as visible on the figure 27 .

[0076] The reader may refer to these tables to understand certain specific display change configurations, which will be described below.

[0077] There figure 8 isolates the displays: on the right side a first group of displays which is the group of displays of the minutes 90M, and includes, from right to left, the roller of the units of minute 1 of the figure 3 , and the roll of tens of minutes 2 of the figure 4 , and, on the left side, a second group of displays which is the group of hour displays 90H and includes, from right to left, the roller of hour units 3, and the roller of tens of hours 4 of the figure 5 These four rollers are here coaxial, with a common axis R, with rotating guide shafts 912 and 934, and some are connected to a drive star held in the rest position by a jumper: the inner minute roller 1B is secured to a star 411 held by a jumper 311; the outer minute roller 1A is secured to a star 412 held by a jumper 312; the inner hour roller 3B is secured to a star 413 held by a jumper 313; we will see later that this same star 413 is arranged to cooperate with two levers at the same time, including a trigger lever, and a correction lever for certain passage configurations, which explains its double width; the outer hour roller 3A is secured to a star 414 held by a jumper 314; the tens of hours roller 4 is secured to a star 416 held by a jumper 316, for its cooperation with a correction lever, which requires the problem of the passage to midnight in this particular type of display.

[0078] The tens of minutes roller 2 is not connected to a star in the present application; however a different coding of the rollers could require it, in which case its case is to be treated in a similar way to the tens of hours roller 4 for its cooperation with a correction rocker 16 presented later.

[0079] This roller of tens of minutes 2 carries a 52 clover on the side for its drive by a 50M tens drive mechanism with Maltese cross.

[0080] The tens of hours roller 4 laterally carries a clover 54 similar to that carried by the tens of minutes roller 2, and comprising radial grooves 541; this clover 54 is integral with a self-locking wheel 73 of a disengaging mechanism 70, in the teeth of which satellites 71 can be locked, mounted loosely on the tenons or planet carrier pivots 72 of the figure 5 , to cause the rotation of this roller for tens of hours 4 by clutching this self-locking wheel 73, while the disengagement of the satellites 71 causes the disengagement.

[0081] The unit rollers 1, 3, carry pins 109, 319, which are arranged to cooperate with Maltese crosses of the minutes 53, 55, for driving the tens rollers 2, 4, during most of the passages, except for the special passages at certain hours, which will all be detailed later.

[0082] THE figures 9 à 30 expose the passage of the minutes. We see the operation of the minute trigger lever 11, pivoting around a lever axis B, for controlling the inner roller 1B of the combined minute unit roller 1. This lever 11 is subjected to the action of a return spring 119, which tends to press a drive finger 1101, which the lever 11 comprises, on a star 411 which this inner roller 1B comprises, and which is itself subjected to the return torque of a jumper 311 to keep it in the rest position. The lever 11 carries, between its pivot and its distal drive finger 1101, on the one hand a ten-minute feeler finger 2211, which is arranged to cooperate in support with a ten-minute cam 22 which is a straight-edged cam of the notched type, and on the other hand a minute feeler roller 2111, which is arranged to bear on the substantially helical track of a minute cam 21, visible on the figure 15 This substantially helical track allows the feeler of each rocker that follows this cam to be raised, before its jump. The feeler is notably a ruby ​​roller or similar, to reduce friction.

[0083] This minute cam 21 has a device to prevent any recoil at the instant of the jump when the feeler roller 2111 leaves the high point of the cam 21, which is its position on the figure 9 . There figure 16 illustrates this device: the cam 21 itself pivots on a cam base 210, a pin 212 secured to the cam 21 slides in a kidney-shaped groove 211, which limits the travel. Thus, during the fall, the pin 212 and therefore the cam 21 is ejected tangentially a little further into the groove 211, and lets the rocker 11 fall, and any unwanted recoil movement is avoided.

[0084] There figure 10 illustrates the passage of the minute unit, when the ten-minute feeler finger 2211 is not stopped by the relief of the ten-minute cam 22, and just after the jump of the feeler roller 2111, when the fall of the lever 11 has just driven the star 411 of the roller 1B which has rotated one position.

[0085] THE figures 11 à 14 are details of the sequence of cooperation between on the one hand the drive finger 1101, which forms a mobile assembly 80 pivotally mounted on a pivot 84 and which comprises an elastic blade 81 movable between two front 82 and rear 83 stops, and on the other hand the star 411 of the roller 1B. In the rest position of the figure 11 , the elastic blade 81 rests on a first front stop 82 located on the side of the star 411. When the rocker 11 descends, the finger 1101 comes into contact with the star 411, the blade 81 leaves the first stop 82 and the finger begins to pivot, its blade 81 approaches the second rear stop 83. When the blade 81 comes into contact with the second stop 83, the star 411 pivots, and the rocker 11 accompanies the star 411 for approximately two-thirds of its pitch before reaching its stop, which ensures the passage of the top of the jumper 311.

[0086] When the rocker 11 rises, the finger 1101 is free, until the blade 81 returns to bear on the first limiting stop 82; the blade 81 is weaker than the jumper 311 of the star 411, the blade 81 flexes to pass the top of the star 411, which cannot therefore be driven again by the finger 1101.

[0087] There figure 18 shows that the minute cam 21 has a substantially helical track, wide enough to be traveled by two feeler rollers 2111 and 2112 which are included in two neighboring levers 11 and 12.

[0088] There figure 17 shows, together, this minute trigger lever for controlling the inner roller 11, juxtaposed with the minute trigger lever for controlling the outer roller 12, whose feeler rollers 2111 and 2112 thus travel along this same helical track of the cam 21, and whose ten-minute feeler fingers 2211 and 2212 are both arranged to cooperate with the same ten-minute cam 22, which authorizes or prohibits the fall of the respective lever 11 or 12.

[0089] There figure 19 represents the same set represented in the position it occupies a few seconds before the jump, in a display position “04” of the minutes, with reference to the table of the figure 6 , with the display of the unit of minutes “4”, where the outer roller 1A presents its aperture 1C (column 2 of the table), while the inner roller 1B presents the number 4 (column 3 of the table); the mechanism is ready to move to a global display position “05” with a display of the units “5”, where the outer roller 1A presents the number 5 (column 2), while the inner roller 1B returns to a position where it presents the number 0 (column 3) and is thus ready to anticipate the passage to the next ten minutes where the inner roller 1B will present its number 0 in the aperture 1C of the outer roller 1A. We see that the two ten-minute feelers 2211 and 2212 are not hindered by the ten-minute cam 22, and the two rockers 11 and 12 can fall when the time comes, to proceed, in a synchronized manner, to the rotation of the two rollers, inner 1B and outer 1A. figure 20 is the situation after the jump, in a display configuration of the value “05” where neither of these two flip-flops 11 and 12 is stopped by the ten-minute cam 22.

[0090] There figure 21 represents the same set after the jump, in another display position, of the value “6”, where the inner roller 1B has not rotated and has remained in its display position, because the rocker 11 corresponding to the display of the inner roller 1B is stopped by the ten-minute cam 22, its feeler finger 2211 being in abutment on the slot of the ten-minute cam 22, and as a result the inner roller 1B does not rotate, and only the rocker 12 relating to the outer roller 1A falls and pivots the latter.

[0091] THE figures 22 et 23 illustrate the ten-minute drive mechanism 50M, the principle of which is also used for triggering the ten hours in the other group of hour displays 90H. This mechanism surrounds the group of displays 90M comprising the combined roller of the units of minutes 1, and the simple roller of the tens of minutes 2; this mechanism is a mobile with an axis parallel to the common axis R of the shafts of the different rollers, and comprises, on the side of the combined roller of the units of minutes 1, a Maltese cross of the minutes 53, the grooves 531 of which are arranged to cooperate with the pin 109, visible on the figure 17 , which this roller 1 carries, and, on the side of the roller of the tens of minutes 2, and integral in rotation with this Maltese cross of the minutes 53, a star with lugs 51 whose lugs 511 are arranged to cooperate with the grooves 529 of the clover of the tens of minutes 52 of the figure 4 .

[0092] THE figures 24 et 25 illustrate the passage of a decade. The figure 24 represents the same assembly, shown in the position it occupies a few seconds before the jump, in global display position “09” with a minute unit display position “9”, where the outer roller 1A shows the number 9 (column 2), while the inner roller 1B shows the number 0 (column 3); the mechanism is ready to move to a global display position “10”, where the tens roller, until then in the display position “0”, will move to the position “1” (column 1), while, at the combined units roller 1, the outer roller 1A will present its aperture 1C (column 2) through which the inner roller 1B will continue, without rotation, to show the display “0” (column 3); a groove 531 of the Maltese cross of the minutes 53 of the minute units cooperates with the pin 109 of the units roller 1. figure 25 represents the same assembly after the jump, in an overall display configuration "10" where neither of the two rockers 11, 12, is stopped by the ten-minute cam 22; the outer roller 1A of the combined minute unit roller 1 has pivoted, and its pin 109 has caused the Maltese cross of the minutes 53 to rotate, which, at the other end, has caused the rotation of the ten-minute cloverleaf 52, and thus of the ten-minute roller 2.

[0093] The display and passage of the hours is done in a similar way. The group of hour displays 90H comprises a roller displaying units of hours 3, and a roller displaying tens of hours 4. A tens of hours drive mechanism 50H surrounds this group of displays 90H, as in the case of the minutes, and operates in a similar way to that of the minutes; an hour trigger lever of the inner roller 13 and an hour trigger lever of the outer roller 14 are also juxtaposed, and are arranged to cooperate with a single hour cam 23, and with a combined twenty-four-hour wheel set 24, which notably comprises a twenty-four-hour cam and a twelve-hour cam. The operation of the passages of the hours is similar to the passage of the minutes explained above, the only important variation being the presence of a twelve-hour cam, instead of a ten-minute cam.It is understood that the invention can be used for any combination of displays, one of which displays a multiple of the other, and for any display range. Of course, the coding of the different rollers, and the nature of the cams and correction levers, are to be adapted to each specific case. For example, the rollers can occupy four, or six, or ten, or even twelve positions, and the multiplying coefficient between two rollers of the same group of displays can also be four, or six, or ten, twelve positions, or other, for other displays such as the calendar, moon phases, tides, or other. Thus, depending on the configuration of the rollers, the drive mechanism 50 can also generate the drive of the multiple roller with coefficients other than ten, for example four, six, twelve, or other.

[0094] More particularly, the twenty-four-hour mobile 24 here groups together a first twelve-hour cam 244 of the trigger lever of the inner hour roller 13, a second twelve-hour cam 245 of the trigger lever of the outer hour roller 14, and a twenty-four-hour cam 246, and a correction cam 247, for managing certain time changes: midnight, one o'clock in the morning, and in particular to guarantee the change from the display "4" to the display "0". This correction cam cooperates with correction levers 15 and 16 detailed later.

[0095] The invention requires the presence of a synchronization mechanism between the display of the minutes and that of the hours, in particular at current times, i.e. other than midnight.

[0096] The mechanical system transmits the instantaneousness of the jump from the units roll to the tens roll, both for the hours and for the minutes, thanks to the respective tens drive mechanism by Maltese cross, clover with lugs, and drive clover.

[0097] Synchronizing the jump of the hour unit with the ten minutes is necessary, since, when "59" is displayed on the 90M minute display, it is necessary that, when moving from the "59" position to the "00" position, the hour unit roller 3 also rotates in a synchronized manner.

[0098] The trigger lever of the inner roller of the hour units 13 and the trigger lever of the outer roller of the hour units 14 driving the two rollers 3B and 3A of the hour units fall a few minutes before the passage of the hour on lugs to standby.

[0099] There figure 28 thus represents, a few minutes before a time change, the trigger lever of the inner roller of the hour units 13, which is similar to the trigger lever of the inner roller of the minute units 11, and whose feeler finger 2313 has just left the hour cam 23. This trigger lever of the inner roller of the hour units 13 comprises a second lever limiting finger 1380, which is arranged to cooperate in abutment with a lug 528 which the clover 52 of the tens of minute roller 2 comprises, which prevents the fall of the trigger lever of the inner roller of the hour units 13 until the tens of minute roller 2 has completed its rotation.

[0100] Similarly, the figure 29 represents, at the same time as the figure 28 , the same mechanism, the trigger lever of the inner roller of the hour units 13 of which is not shown, in order to allow the vision of the trigger lever of the outer roller of the hour units 14, the feeler finger 2314 of which has also just left the hour cam 23; this trigger lever of the outer roller of the hour units 14 also comprises a second lever stop finger 1490, which is arranged to cooperate in stop support with a lug 579 which comprises a drive clover 57, kinematically linked to the minute Maltese cross system, and which, in the same way, prevents the fall of the trigger lever of the outer roller of the hour units 14 until the minute Maltese cross 53 has completed its rotation. The drive clover 57 is in particular rotatably mounted on a shaft parallel to that of the minute Maltese cross 53, as visible on the figure 29 .

[0101] When the tens of minutes roller 2 rotates to move from the display position “5” to the display position “0”, the two lugs 528 and 579 leave the path of the respective rockers 13 and 14, which can then fall. figure 30 shows these two rockers 13 and 14, just after the rotation of the tens of minutes roller 2 between its position “5” and its position “0”, the fall of the rockers allowing the drive of the hours units roller 3.

[0102] There figure 31 shows the entire mechanism relating to the hours, which incorporates a correcting lever for the hour units 15 which is juxtaposed with the trigger lever for the inner roller of the hour units 13, and a correcting lever for the tens of the hour 16 which is juxtaposed with the trigger lever for the outer roller of the hour units 14; the assembly is shown in position at 23:59. This figure also shows the two tens drive mechanisms. The table of the figure 7 shows that the passage of the tens of hours, in particular from the position "23" to the position "00", does not follow the classic pattern of the passages from "03" to "04" and from "13" to "14", because if we followed the same logic, the change of display would go from "23" to "24" whereas we want to display "00" permanently, and not "24", for the displays in the first hour of the morning; this does not exclude a variant with a very brief transient display "24" "00", between the normal displays "23" "59" and "00" "00", which each remain visible for approximately one minute.

[0103] To move from the display "23" to the display "00", it is therefore generally necessary to move the inner roller 3B of the hour units from the position "3" to the position "4" then to the position "0", not to turn the outer roller 3A of the hour units, and to move the roller of the tens of hours 4 from the position "2" to the position "0" without turning the Maltese cross of the hours 55 of the tens of hours drive mechanism.

[0104] THE figures 32 et 33 represent the correction lever of the hour units 15, which has a lateral protrusion 151, which rests on a counterbore 135 of the trigger lever of the inner roller of the hour units 13, the protrusion 151 rests on the counterbore 135 a few minutes before the jump, it is then on standby. The correction lever of the hour units 15 has a drive finger 1501, which is arranged to take place next to the drive finger 1301 of the trigger lever of the inner roller of the hour units 13, and to cooperate with the same star 413 for driving the inner roller of the hour units 3B.When the trigger lever of the inner roller of the hour units 13 falls at midnight, this correction lever of the hour units 15 also falls when passing midnight, which makes it possible to drive the inner roller of the hours 3B twice, and to allow the passage from the display "3" to the display "0", without passing through the display "4"; the same is true at one o'clock in the morning, as visible on the table of the . figure 7 .

[0105] There figure 34 represents, together, the hour units correction lever 15, and the tens of hour correction lever 16, which constitute an arrangement allowing, at midnight, the transition from the display “2” to the display “0”, without the tens drive mechanism coming into operation by the Maltese cross 55. This tens of hour correction lever 16 falls a few minutes before midnight, and rests on the hour units correction lever 15, by means of a synchronizer which is a shaft 17 carried by the tens of hour correction lever 16, which is parallel to the pivot axis B common to the levers, and a bearing surface 172 of which cooperates with a bearing face 152 of the hour units correction lever 15. This figure 34 shows, again, the feeler fingers 2415 and 2416 of these two scales 15 and 16, which are both arranged to cooperate with the twenty-four hour mobile 24 which authorizes or prohibits the fall of these scales.

[0106] To allow the direct passage of an inner roller 1B, 3B, with a jump of two positions without rotation of the corresponding outer roller 1A, 3A, a correction lever 15 carries a pivoting hook 154, which cooperates with a hook actuator 138 carried by the trigger lever 11, 13, for driving this inner roller 1B, 3B, so that, at the end of travel of the trigger lever 13, its hook actuator 138 releases the hook 154, and authorizes the fall of the correction lever 15, which is released by the twenty-four-hour mobile 24, for driving the inner roller 1B, 3B.

[0107] The transition from position “3” to position “4” and then to position “0” of the inner roller 3B of the hour unit display requires a special arrangement, visible on the figures 35 à 39 The transition from position “3” to position “4” is made as at the passage of each hour, but, when the trigger lever for the inner roller of the hours 13 reaches the end of its travel, it pushes a pivoting hook 154, which is pivotally mounted on a pivot 153 secured to a fixed element such as a plate or similar, and which releases the correction lever of the hour units 15, to actuate the same star 413 a second time, and thus pass from position “4” to position “0”.

[0108] There figure 35 represents, together and juxtaposed, the trigger lever for the inner hour roller 13, and the hour units correction lever 15, the combination of which allows particular display passages, including the direct passage of the inner hour roller 3B from position “3” to position “0” without rotation of the outer roller 3A, and the passage of the tens hour roller from position “2” to position “0” without rotating the Maltese cross of the hours 55 of the tens drive mechanism. To allow the direct passage of the inner hour roller 3B from position “3”, via position “4” to position “0” without rotation of the outer roller 3A, the hour units correction lever 15 carries a pivoting hook 154, which cooperates with a hook actuator 138 carried by the trigger lever for the inner hour roller 13.This figure shows, juxtaposed, the drive fingers 1301 and 1501 of these two levers 13 and 15, which are arranged to cooperate with the same drive star 413 of the inner roller of the hour units. The correction lever of the hour units 15 comprises a feeler finger 2415, which is arranged to cooperate with the combined twenty-four-hour wheel set 24, and in particular with its outer track; the passage from position “3” to position “4” is conventionally controlled by the drive finger 1301 of the trigger lever for the inner roller of the hours 13 while the correction lever of the hour units 15 is immobilized by this hook 154.

[0109] And, at the end of the travel of the trigger lever for the inner hour roller 13, its hook actuator 138 releases the hook 154, and authorizes the fall of the hour unit correction lever 15, released by the twenty-four hour mobile 24, and whose drive finger 1501 controls a new rotation of the star 413 of the inner hour roller 3B for the display of the “0” position.

[0110] The hook actuator 138 is arranged to push an oblique track 158 of the pivoting hook 154. The rocker 15 carries a pin support finger 152 which carries a locking pin 156, which cooperates with a cylindrical track 155 of the hook 154 during part of the angular travel of the latter, and which escapes from it at the end of the angular travel of the hook under the thrust of the hook actuator 138. On the figure 37 , the hook actuator 138 is resting on the oblique track 158 of the hook 154, and neither of the two rockers 13 and 15 has pivoted. The figure 38 illustrates the beginning of the fall of the trigger lever for the inner roller of the hours 13, for the passage from the position "3" to the position "4"; the hook actuator 138 pushes back the oblique track 158, and pivots the hook 154, which still cooperates with its pin 156 at the level of its concentric cylindrical track 155, immobilizing the correction lever of the hour units 15. The figure 39 illustrates the end of the fall of the trigger lever for the inner roller of the hours 13 for the passage from position "3" to position "4"; the hook actuator 138 pushes back the oblique track 158 of the hook 154, and pivots the hook 154, which escapes from its pin 156, releasing the correction lever of the hour units 15, which, also released by the twenty-four hour mobile 24, can pivot and drive by its drive finger 1501 the inner roller of the hour units 3B, which has just briefly passed into position "4" under the action of the fall of the trigger lever for the inner roller of the hours 13, towards the position "0"; the twenty-four hour mobile 24 is arranged to only allow the fall of the correction lever of the hour units 15 twice a day, at midnight and at one o'clock in the morning. For this purpose the twenty-four hour cam 247 has a notch 249 corresponding to this time range.The rest of the time, the hour unit correction lever 15 remains on the upper part of the twenty-four hour cam 247, which prevents it from falling and prevents it from rotating the star 413 of the inner roller 3B of the hour units.

[0111] The passage of the tens of hours roller 4 from position “2” to position “0” requires the intervention of the tens of hours correction rocker 16, already shown on the figure 34 . As seen on the figure 41 , the tens-hour correction lever 16 cooperates with a twenty-four-hour cam 246, located on the twenty-four-hour mobile 24, to, each day at midnight, release this lever 16 to drive a star 416 linked to the tens-hour roller 4, to make it pass from the position "2" to the position "0". But it is then necessary to short-circuit the tens drive mechanism comprising the Maltese cross of the hours 55, because, at midnight, the external roller 3A of the units of the hour blocks the rotation, because the mechanism is in the situation of the figure 42 , in a midnight locking position, which requires the installation of a clutch mechanism 70.

[0112] A particular variant of this clutch mechanism 70 is partially visible on the figure 41 , and illustrated in detail by the figures 43 à 47 ; this clutch mechanism 70 comprises a self-locking wheel 73 with satellites 71, similar to that of an automatic reverser, to allow the rotation of the roller of the tens of hours 4 independently of the drive clover linked to the Maltese cross of the hours 55 of the tens drive mechanism, which itself is blocked. figure 43 shows the clover 54 of the tens of hours roller 4, under which clover 54 we see this self-locking wheel 73 cooperating with satellites 71, in particular and not limited to three satellites 71 which pivot on three tenons or pivots 72 carried by the tens of hours roller 4.

[0113] There figure 45 illustrates a classic tens passage. When the outer roller 3A of the hour units passes from the position “9” to the position “0”, it activates the Maltese cross of the hours 55, which turns the clover 54 secured to the self-locking wheel 73; the satellites 71 have a particular non-reversible shape, and lock in the teeth of the self-locking wheel 73, which causes the rotation of the hour tens roller 4; the self-locking wheel 73 and the tens roller 4 rotate clockwise as seen in the figure, and at least one satellite 71 is in overlap with the teeth of the self-locking wheel 73.

[0114] The transition from position "23" "59" to position "00" "00" is illustrated by the figures 46 et 47 : the fall of the rocker on the star 416 of the tens of hours roller 4 makes the latter turn, also in the clockwise direction of the figure; the satellites 71 can then turn freely around the self-locking wheel thanks to the shape of their teeth. More particularly, an angular offset of the satellites is imposed between them to reduce the dead angle.

[0115] Naturally, the clutch mechanism 70 can take other constructive forms, for example with a freewheel type mechanism, allowing rotation in one direction, and imposing in the other direction a clutch by blocking a ball on the wall of a chamber in which this ball is enclosed, or other.

[0116] Some alternatives of this clutch mechanism 70 may, thus, have two inputs.

[0117] The jumping roller clock display mechanism 100 according to the invention makes it possible to have, in a small volume, an original display, which can constitute a main display or a secondary display, alone, or in combination or juxtaposition with other displays.

[0118] A particular application describes below a timepiece 1000, in particular a watch, comprising at least one movement 500 for driving a main display mechanism and a secondary display mechanism. The example chosen concerns a space mission to the planet Mars: one of the displays is that linked to the planet Earth and to the duration of Earth days and hours, while the other display, produced with a jumping roller timepiece display mechanism 100 according to the invention, is linked to the planet Mars, and to the duration of Martian days and hours. In this particular case, the duration of a Martian solar day is 24.659790 Earth hours (close to 24 hours and 40 Earth minutes). The ratio between the duration of an Earth day and a Martian day is therefore equal to 24 / 24.659790 = 0.973244296089269.

[0119] A suitable timer, using mobiles with reasonable numbers of teeth for use in a watch, has a 22-tooth Earth cannon, which completes one revolution when a 36-tooth minuter pinion completes 0.6111 revolutions, and a 43-tooth minuter wheel, which cooperates with a 27-tooth Martian cannon, which then completes 0.973251028806584 revolutions. The error associated with this timer is small, about 6.733. 10 -6< , which corresponds to 4.10 -4< Earth minutes, or 0.02424 Earth seconds, or 0.58171 seconds per Earth day.

[0120] We therefore have an advance of approximately 0.58 seconds per day: when the Martian time display goes from 11:59 p.m. to midnight, the change occurs 0.58 seconds before the planet Mars has actually completed its rotation on itself.

[0121] Of course, other gear ratios allow for a lower error: a 19-tooth terrestrial roadway, which makes one revolution, when a 12-tooth minute wheel pinion makes 1.583333 revolutions, as well as a 67-tooth minute wheel, which cooperates with a 109-tooth Martian roadway, which then makes 0.973241590214067 revolutions. The error linked to this minute wheel is then about minus 0.23 seconds per day, but at the cost of cogs with a large number of teeth, which would require a much larger volume.

[0122] The timer mechanism with an advance of approximately 0.58 seconds per day therefore remains a good solution for a watch; we note that this error is much lower than the running error of many usual watchmaking regulating organs.

[0123] There figure 48 schematizes a 600 cog, comprising, in sequence: an Earth 610 roadway making one revolution in 24 Earth hours; a timer 620 mobile; a Mars 630 roadway making one revolution in 24.6596 terrestrial hours; a multiplier / demultiplier gear train 640; a set of cams 650, which includes the minute cam 21, the ten-minute cam 22, the hour cam 23, the twelve-hour cams 244 and 245, the twenty-four-hour cam 246, and the correction cam 247; a set of trigger and correction levers 660, which includes the trigger lever for the inner minute unit roller 11, the trigger lever for the outer minute unit roller 12, the trigger lever for the inner hour unit roller 13, the trigger lever for the outer hour unit roller 14, the correction lever for the hour units 15, and the correction lever for the tens of hours 16; a set of display rollers 670, which here comprises the minute units roller 1, the tens of minutes roller 2, the hour units roller 3, and the tens of hours roller 4.

[0124] There figure 49 schematizes the connection between the Earth roadway 610 and the Mars roadway 630 via the timer wheel 620, which includes the timer pinion 621 and the timer wheel 622.

[0125] There figure 50 is a perspective view of the multiplier / demultiplier gear train 640, which comprises, from the Mars cannon-pinion 630 on which the hour cam 23 is located, a first demultiplier gear train 641 for driving the twenty-four-hour wheel set 24, and a second multiplier gear train 642 for driving the minute cam 21 and the ten-minute cam 22. This first demultiplier gear train 641 comprises a timer wheel set for the hours 643, a twelve-hour wheel set 644, and the twenty-four-hour wheel set 24. This second multiplier gear train 642 comprises an intermediate wheel set 645, a multiplier wheel set 646, a minute wheel set 647 carrying the minute cam 21, and a ten-minute wheel set 648 carrying the ten-minute cam 22.

[0126] The invention is also applicable for a main time display, a secondary display, a second time zone, a chronograph, or any other display.

Claims

1. Roller jumping timepiece display mechanism (100), characterised in that it includes, for the display of a quantity, at least one display which includes a roller (1, 1A, 1B, 2, 3, 3A, 3B, 4) and / or a combined roller (10) which includes at least two said rollers (1A, 1B, 3A, 3B) which are inside one another, the outer roller (1A, 3A) including at least one roller aperture arranged to allow the inner roller (1B, 3B) to be viewed or read, each said display being held in the rest position by first elastic return means (311, 312, 313, 314, 316), and at least one said display being rotatable, controlled by at least one release or correction lever (11, 12, 13, 14, 15, 16) that said mechanism (100) includes and whose drop is controlled or prevented by at least one cam (21, 22, 23, 24, 244, 245, 246, 247) that said mechanism (100) comprises, and which is arranged to be driven by a horology movement (500), in which at least one said release or correction lever (11, 12, 13, 14, 15, 16) is arranged to cooperate simultaneously with at least two said cams (21, 22, 23, 24, 244, 245, 246, 247) towards which it is returned by second elastic return means (119, 129, 139, 149, 159, 169), said mechanism (100) including at least one upstream display assembly (200), for which the rotations of the upstream rollers (1, 2) which it is composed of are controlled by upstream release levers (11, 12), and which is arranged to cooperate with a downstream display assembly (300) to which it is juxtaposed, characterised in that the rotations of the downstream rollers (3, 4) which make up the said downstream display assembly are controlled by downstream release levers (13, 14), and in that the said mechanism (100) includes at least one said correction lever (15, 16) arranged to cooperate with one of said downstream release levers (13, 14), and a mechanism (17) for synchronising the levers between the said correction levers (15, 16) when said mechanism (100) includes a plurality of the latter, for controlling the rotation of at least one display of said downstream display assembly (300) in its correct position at the end of a cycle of said upstream display assembly (200).

2. Mechanism (100) according to claim 1, characterised in that at least two of the said release or correction levers (11, 12, 13, 14, 15, 16) are arranged to cooperate simultaneously in bearing with the same cam (21, 22, 23, 24, 244, 245, 246, 247) towards which they are returned by said second elastic return means (119, 129, 139, 149, 159, 169).

3. Mechanism (100) according to claim 1 or 2, characterised in that said mechanism (100) includes at least one release lever (11, 12, 13, 14) including a first feeler spindle (2111, 2112, 2313, 2314) arranged to follow the contour of a rotation control cam (21; 23) which is arranged to cause a jump of a said release lever (11, 12, 13, 14) in a particular angular position of said rotation control cam (21; 23).

4. Mechanism (100) according to claim 3, characterised in that each said release lever (11, 12, 13, 14) is arranged to cooperate simultaneously with at least two said cams (21, 22, 23, 24, 244, 245, 246, 247) towards which it is returned by said second elastic return means (119, 129, 139, 149).

5. Mechanism (100) according to claim 3 or 4, characterised in that at least one said release lever (11, 12, 13, 14) is arranged to prevent or allow the drop of another lever which is a correction lever (15, 16).

6. Mechanism (100) according to claim 5, characterised in that at least one correction lever (15, 16) is arranged to control the rotation of the same roller as controls a said release lever (11, 12, 13, 14).

7. Mechanism (100) according to claim 5 or 6, characterised in that at least one correction lever (15, 16) is arranged to control only the rotation of a said roller which does not cooperate with any said release lever (11, 12, 13, 14).

8. Mechanism (100) according to any one of claims 1 to 7, characterised in that said mechanism (100) includes at least one prevention cam (22, 24, 244, 245, 246, 247) arranged to prevent or allow the drop of a said release or correction lever (11, 12, 13, 14, 15, 16), a second feeler spindle (2211, 2212, 2413, 2414, 2415, 2416) of which is arranged to interfere or not with said prevention cam (22, 24, 244, 245, 246, 247), depending on the angular position of said prevention cam (22, 24, 244, 245, 246, 247).

9. Mechanism (100) according to any one of claims 1 to 8, characterised in that each said release or correction lever (11, 12, 13, 14, 15, 16) is arranged to cooperate simultaneously with at least two said cams (21, 22, 23, 24, 244, 245, 246, 247) towards which it is returned by said second elastic return means (119, 129, 139, 149, 159, 169).

10. Mechanism (100) according to any one of claims 1 to 9, characterised in that at least one said roller (1, 1A, 1B, 2, 3, 3A, 3B, 4) or combined roller (10) is rotatable, controlled by a drive mechanism (50), independently of said release or correction levers (11, 12, 13, 14, 15, 16) and which is driven by another said roller (1, 1A, 1B, 2, 3, 3A, 3B, 4) or combined roller (10).

11. Mechanism (100) according to any one of claims 1 to 10, characterised in that said mechanism (100) is arranged to display the value of at least one quantity on a group of displays (90M, 90H) including at least two said elementary displays which are coaxial and juxtaposed to one another, each said elementary display being formed by a said roller (1, 1A, 1B, 2, 3, 3A, 3B, 4) or by a said combined roller (10).

12. Mechanism (100) according to claims 10 and 11, characterised in that at least one said group of displays (90M, 90H) includes a said drive mechanism (50) for triggering the rotation of one of said displays which said group of displays (90M, 90H) comprises at the end of a cycle of another display which is juxtaposed thereto.

13. Mechanism (100) according to claim 11 or 12, characterised in that said mechanism (100) is arranged to display the value of at least two quantities, in that each said quantity is displayed on at least one said display or said group of displays (90M, 90H), and in that all the said displays or groups of displays (90M, 90H) are coaxial and juxtaposed two by two.

14. Mechanism (100) according to claim 10 and any one of claims 1 to 13, characterised in that said mechanism (100) includes a roller synchronisation mechanism for triggering the rotation of a said downstream display of a said group of displays (90M, 90H) at the end of a cycle of another upstream display of another said group of displays (90M, 90H) which is juxtaposed thereto, said roller synchronisation mechanism including locking means (1380, 1490) of each said downstream release lever (13, 14) arranged for controlling the rotation of the said downstream display (3), by bearing on catches (528, 579) carried by the said drive mechanism (50) of the said upstream display (2), and the said upstream display (2), in order to block the rotation of each said downstream release lever (13, 14) during certain display phases, and to synchronise the jump of the said at least two said groups of displays (90M, 90H).

15. Mechanism (100) according to claim 10 and any one of claims 1 to 14, characterised in that at least one said group of displays (90M, 90H) includes at least two said rollers (1, 1A, 1B, 2, 3, 3A, 3B, 4), one of which, which is referred to as a multiple, displays as a unit an integer multiple of the value of the unit of the other, which is referred to as a submultiple, and in that said display mechanism (100) then includes, for said group of displays (90M, 90H), at least one said drive mechanism (50M, 50H), arranged to rotate the roller of the multiple by one position when the roller of the submultiple has performed the rotation, or rotations, corresponding to all of its display sequences in the step of the multiple.

16. Mechanism (100) according to 10 or a dependent claim of claim 10, and according to 15, characterised in that each said group of displays (90M, 90H) includes at least two rollers (1, 1A, 1B, 2, 3, 3A, 3B, 4) kinematically connected by a said drive mechanism (50M, 50H), including a Maltese cross (53; 55) arranged to be driven in rotation by a pin (109; 319) fixed to the roller of the submultiple, and which is fixed in rotation to a star with catches (51; 56) which is arranged to drive, via one of its catches (151; 156), a trefoil (52; 54) carried by the roller of the multiple.

17. Mechanism (100) according to claim 16, characterised in that said trefoil (52; 54) or said roller of the multiple carries a bearing catch (528) arranged to act as a stop support for a lever limiting finger (1380) which a said release lever (11, 12, 13, 14) comprises.

18. Mechanism (100) according to claims 14 and 16, characterised in that said star with catches (51; 56) of the said drive mechanism (50M, 50H) of the said upstream display (2) is arranged to drive in rotation, about an axis parallel to its own, a drive trefoil (57) bearing a lever stop catch (579) arranged to act as a stop support for a lever stop finger (1490) which a said release lever (11, 12, 13, 14) comprises.

19. Mechanism (100) according to any one of claims 16 to 18, characterised in that said trefoil (52; 54) or said roller of the multiple bears posts (72) or satellite-bearing pivots for receiving satellites (71) which includes a disconnecting mechanism (70) arranged to disconnect a said drive mechanism (50M, 50H), to allow the correction of the position of a said roller (1, 1A, 1B, 2, 3, 3A, 3B, 4) by a correction lever (15; 16) and not by a said drive mechanism (50M, 50H).

20. Mechanism (100) according to any one of claims 1 to 19, characterised in that said mechanism (100) includes at least one said combined roller (10), an inner roller (1B; 3B) of which is arranged to be driven in rotation by a release lever of the inner roller (11; 13), and the said outer roller (1A; 3A) of which is arranged to be driven by a release lever of the outer roller (12; 14) or by a first correction lever (15) which said mechanism (100) comprises.

21. Mechanism (100) according to any one of claims 15 to 20, characterised in that at least one said combined roller (10) is a said sub-multiple roller.

22. Mechanism (100) according to claim 20, characterised in that said inner roller (1B; 3B) is also arranged so as to be, at certain predetermined instants and controlled by a twenty-four-hour mobile (24) driven by said movement (500), driven in rotation by said first correction lever (15) which is juxtaposed to said release lever of the inner roller (11; 13) and which cooperates with it with the cams of said twenty-four-hour mobile (24), and which includes a lateral projection (151), which bears on a counterbore (135) of the lever for triggering the inner roller (11; 13), said projection (151) bearing on said counterbore (135) shortly before a jump controlled by a said cam (21; 23) on which a feeler spindle (2111; 2313) is mounted, which the said lever for releasing the inner roller (11; 13) comprises, the said correction lever (15) comprising a drive finger (1501) which is arranged to be positioned alongside a drive finger (1101; 1301) of the said lever for releasing the inner roller (11; 13), and to cooperate with a same star (411; 413) of said inner roller (1B; 3B), so that, when the said lever for releasing the inner roller (11; 13) drops at an instant controlled by said cam (21; 23) for a jump authorised by said twenty-four hour mobile (24), said first lever for correcting the time units (15) also drops in order to drive said star (411; 413) in turn, thus driving the said inner roller (1B; 3B) twice.

23. Mechanism (100) according to claims 6 and 20, characterised in that, to allow the direct passage of a said inner roller (1B, 3B) with a jump from two positions without rotation of the corresponding said outer roller (1A, 3A), a said correction lever (15, 16) bears a pivoting hook (154), which cooperates with a hook actuator (138) carried by the release lever (11, 13) for driving said inner roller (1B, 3B) so that, at the end of the travel of said release lever (11, 13), its hook actuator (138) releases said hook (154) and allows said correction lever (15, 16) to drop, which is released by said twenty-four hour mobile (24) for driving said inner roller (1B, 3B).

24. Mechanism (100) according to any one of claims 1 to 23, characterised in that each said roller (1, 1A, 1B, 2, 3, 3A, 3B, 4) or each said combined roller (10) includes at most six display positions.

25. Mechanism (100) according to any one of claims 1 to 24, characterised in that said mechanism (100) includes a group of minute displays (90M) which includes two said rollers (1, 2), the first minute roller (1) of which is a multiple roller (10) for displaying units of minutes, and the second minute roller (2) of which is a single roller for displaying tens of minutes, and a group of hour displays (90H) which comprises two said rollers (3, 4), the first hour roller (3) of which is a multiple roller (10) for displaying units of hours, and the second hour roller (4) of which is a single roller for displaying tens of hours, and in that the said display mechanism (100) includes, for each said group of displays (90M, 90H) at least one said drive mechanism (50M, 50H), arranged to rotate the tens roller by one position when the units roller has performed the rotation, or rotations, corresponding to all of its display sequences in the tens step.

26. Timepiece (1000) including at least one movement (500) arranged to drive cams (21, 22, 23, 24, 244, 245, 246, 247) which include a roller jumping timepiece display mechanism (100) according to any one of claims 1 to 25.

27. Timepiece (1000) according to claim 26, including a mechanism (100) according to claim 25, characterised in that said mechanism (100) is dedicated to displaying the hours and minutes on the planet Mars, and in that a said movement (500) is arranged to drive a train (600), including, in sequence, an Earth gear (610) making one revolution in 24 terrestrial hours, a minute wheel (620), a Mars gear (630) which makes one revolution in 24.6596 terrestrial hours, a multiplier / demultiplier gear (640), a set of cams (650), including a minute cam (21), a ten-minute cam (22), an hour cam (23), twelve-hour cams (244; 245), a twenty-four hour cam (246), and a correction cam (247), a set of release and correction levers (660), which includes a release lever for the internal minute unit roller (11), a release lever for the external minute unit roller (12), a release lever for the internal hour unit roller (13), a release lever for the external hour unit roller (14), an hour unit correction lever (15), and a tens of hour correction lever (16), and a set of display rollers (670), which comprises said minute unit roller (1), said tens of minute roller (2), said hour unit roller (3), and said tens of hour roller (4).

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