Jumping 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 clockwork display mechanism with jumping rollers.

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

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

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

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

[0006] One solution is to use conventional displays, such as hands or discs, for the first display and a roller display for the second. However, a roller display for a watch requires a considerable amount of space and is difficult to integrate into a watch. Furthermore, to avoid confusion when changing the time or day, it is preferable to use an instantaneous jumping display, which is more complex. These constraints are further amplified when the second display involves quantities with units different from those of the first display, requiring a conversion mechanism that further complicates the watch's construction. Document CH 705 476 A2 describes a roller-based jumping display mechanism for watchmaking. Résumé de l'invention

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

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

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

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

[0011] Other features and advantages of the invention will become apparent from the detailed description that follows, with reference to the attached drawings, where a particular embodiment of the invention is illustrated for the specific and non-limiting case of a mechanical digital display of 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 apertures through which groups of display rollers, respectively for minutes and hours, are visible; this dial surmounts a plate which carries these rollers and the other components of a jumping display mechanism, with instantaneous jump, according to the invention; figure 2 is the counterpoint to the figure 1 and shows the underside of the same mechanism, with in particular the various triggering 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 shown by a dashed line; the common pivot axis of the levers is also shown by another dashed line; the figure 3 represents, schematically and in perspective, a minute roll according to the invention, which is a combined roll comprising, shown separately from left to right, an inner roll, an outer roll with its aperture, and the assembly consisting of this inner roll mounted within this outer roll; the hour roll, not illustrated, is constructed in a similar manner; the figure 4 represents, schematically and in perspective, a tens-minutes roller, which laterally bears a tens-minutes trefoil comprising six radial grooves arranged to cooperate with a star lug that comprises a lug-shaped star 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 tilt-limiting finger; the figure 5 represents, schematically and in perspective, a tens-of-hours roller, whose shaft includes a drive square, and which laterally carries three tenons or planetary-carrying pivots for a disengagement mechanism; the figure 6 represents a coding of the minute display, according to which is constructed the particular, non-limiting variant of the mechanism, which is illustrated by the figures, based on the rollers of the figures 3 et 4 ; there figure 7 represents a coding of the time display, according to which is constructed the particular, non-limiting variant of the mechanism, which is illustrated by the figures, based on the rollers illustrated in the 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 minute unit roll of the figure 3 and the roll of tens of minutes of the figure 4 and, on the left, a second group of displays which is the group of hour displays and includes, from right to left, the hour units roller, analogous to the figure 3 , and the roll of dozens of hours of the figure 5 These four rollers are coaxial, and each is connected to a star held in its rest position by a jumper; the tens-hour roller bears laterally a trefoil similar to that of the tens-minute roller; this trefoil is integral with a self-locking wheel of a disengagement mechanism, in the teeth of which satellites mounted freely on the tenons or pivots of the satellite can lock. figure 5 , to cause the rotation of this roller for tens of hours by engaging this wheel, while the disengagement of the satellites causes the clutch to be released; the figure 9 represents, schematically and in side view, the control of the minute triggering rocker, for the control of the inner roller of the combined minute units roller; this rocker 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 includes the rocker, on a star which includes this inner roller and which is itself subjected to the return torque of a jumper for its maintenance in the rest position;This rocker arm 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, slotted-type cam, 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 includes a device to prevent any recoil at the moment 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 transition from the minute unit, through 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 jump of the feeler roller, when the fall of the rocker has just caused the star of the roller which has rotated one position; the figures 11 à 14 are details, shown in side view, on the opposite side from the figures 9 et 10 , of the cooperation sequence between the driving finger, which is pivotally mounted and has a movable elastic blade between two stops, and the roller star; the figure 11 is the resting position, similar to the figure 9 , before the rocker descends; the elastic blade rests against a first stop located on the star side; the figure 12 During the descent of the rocker, the finger makes contact with the star, the finger blade leaves the first stop, and the finger begins to pivot in the direction of the arrow; 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 jump; the figure 14 shows the upward movement of the rocker, during which the finger is free, until the finger blade returns to rest against the first limiting stop; the blade is weaker than the star's jump, the blade bends to pass the star's apex, which therefore cannot be driven again by the finger; the figures 15 et 16 illustrate the minute cam, schematically and in perspective, viewed from above and below: this minute cam is in two parts, one of which has a roughly helical track, wide enough to be traversed simultaneously by two feeler rollers on two adjacent rockers; this upper part is rotationally mobile relative to a lower part, with angular mobility limited by the cooperation of a pin fixed to the cam part, with an oblong, bean-shaped groove that limits the angle of freedom: thus, during the fall, when the feeler roller of the rocker passes the top of the cam, there is no recoil effect, and the rocker can fall to bring the roller star along in an instantaneous jump; the figure 17 represents, schematically and in perspective, this minute release lever for controlling the inner roller, juxtaposed with the minute release lever for controlling the outer roller, whose feeler rollers travel together along the same helical track of the cam, and whose ten-minute feeler fingers are both arranged to cooperate with the same ten-minute cam, which allows or prevents the lever from falling; this figure also shows the return springs of these two levers; the units roller, on the left in the figure, has a pin that is intended to cooperate with a groove in a Maltese cross that is part of a ten-minute drive mechanism; the figure 18 is a detail that schematically and in perspective represents the feeler rollers of the two neighboring rocker arms, which together travel along the 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 for the minute unit "4", where the outer roller presents its aperture, 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 transition to the next ten minutes where the inner roller will present its number 0 in the aperture of the outer roller; neither of these two flips is stopped here by the ten-minute cam; the figure 20 is similar to the figure 19 , 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, which can oppose the fall of one of the rockers that travels along it, to allow or prevent the inner or outer roller from rotating; as a result, each rocker has driven its respective roller, and, simultaneously, the outer and inner rollers have rotated one position; the figure 21 is similar to the figure 20 , and represents the same assembly after the next jump for the transition from display position "5" to display position "6", where only the outer roller rotates, while the inner roller remains in the position displaying the number "0"; indeed, 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 against the notch of the ten-minute cam, and therefore the inner roller does not rotate, and only the rocker relating to the outer roller falls and rotates the latter; the figures 22 et 23 represent, schematically and in perspective from two opposite sides, the ten-minute drive mechanism, which surrounds the group of displays comprising the combined minute unit roller and the single ten-minute roller; this mechanism is a moving part with an axis parallel to the axis common to the shafts of the different rollers, and includes, on the side of the combined minute unit roller, a Maltese cross whose grooves are arranged to cooperate with the pawl, visible on the figure 17 , which this combined roll of units carries, and, on the side of the roll of tens of minutes, and fixed in rotation with this Maltese cross, a pinned star whose pins are arranged to cooperate with the grooves of the trefoil of the tens of minutes of the figure 4 ; there figure 24 is similar to the figure 20 , and is complemented with the ten-minute training mechanism of the figures 22 et 23 , and represents the same assembly displayed in the position it occupies a few seconds before the jump, in a "9" minute unit display position, where the outer roller shows the number 9, while the inner roller shows the number 0; the mechanism is ready to move to a "10" display position, where the tens roller, until then in the "0" display position, will move to the "1" position, while, at the combined units roller, the outer roller will present its aperture through which the inner roller will continue, without rotation, to show the number 0; a groove in the Maltese cross of the minutes units cooperates with the pawl 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 units roller has pivoted, and its pawl has caused the Maltese cross to rotate, which, at the other end, has caused the ten-minute trefoil to rotate, 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 triggering levers specific to the hour mechanism, which comprises a combined hour roller with an inner roller within an outer roller, like that of the minutes, and a tens-hour roller; a ten o'clock drive mechanism surrounds this group of displays, as in the case of the minutes, and operates similarly to that of the minutes; two triggering 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 mobile comprising a twenty-four-hour cam and a twelve-hour cam; the operation of the hour transitions is similar to the minute transitions described in the figures 9 à 25 The only significant variation being the presence of a twelve o'clock cam (analogous to the ten-minute cam in terms of its operation); the figure 27 This schematic and perspective representation shows this twenty-four-hour mechanism, which includes a twelve o'clock cam for the inner roller's rocker, a twelve o'clock cam for the outer roller's rocker, and a correction cam for managing certain time transitions: midnight, one o'clock in the morning, to ensure the transition from the "4" display to the "0" display; this correction cam works in conjunction 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 hours at current times, that is, other than midnight: the figure 28 represents, a few minutes before a time change, a triggering lever for the inner hour roller, similar to its minute counterpart, whose feeler finger has just left the hour cam; this lever has a second finger, which is arranged to cooperate as a stop against a lug on the cloverleaf of the tens-minute roller, which prevents the lever from falling until the tens-minute roller has completed its rotation; the figure 29 represents, at the same time as the figure 28 The same mechanism, whose triggering lever for the inner hour unit roller is not shown in order to allow visualization of a triggering lever for the outer hour unit roller, whose feeler finger has also just left the hour cam; this lever has a second finger, which is arranged to cooperate as a stop against a lug on a drive trefoil kinematically linked to the Maltese cross system for the minutes, and which, in the same way, prevents the lever from falling until the Maltese cross for the minutes has completed its rotation; the figure 30 shows the two rocker arms figures 28 et 29 , just after the rotation of the tens-minute roller between its "5" position and its "0" position, during which rotation the two lugs leave the path of the rockers, allowing them to fall, and thus the drive of the hour units roller; the figure 31 illustrious, in a similar way to the figure 26 The mechanism relating to the hours, which incorporates a unit-hour correction rocker juxtaposed with the trigger rocker of the inner unit-hour roller, and a ten-hour correction rocker juxtaposed with the trigger rocker of the outer unit-hour roller; the assembly is shown in the 23:59 position; the figure 32 This schematically represents, in perspective, the hour unit correction lever, which has a lateral protrusion resting on a counterbore of the trigger lever for the inner hour unit roller, and which has a drive finger arranged to fit next to the drive finger of the latter and to cooperate with the same drive star of the inner hour unit roller. This hour unit correction lever falls at the stroke of midnight to drive the inner hour roller twice, allowing the display to jump from "3" to "0" without passing through "4". The same occurs at one o'clock in the morning. figure 33 is a detail of the synchronization cooperation between these two flippers by one pressing against the other, the lateral prominence resting on the counterbore of the trigger flipper of the inner hour unit roller which is shown in transparency; the hour unit correction flipper falls with the trigger flipper of the inner hour unit roller when the latter is released and falls; the figure 34 represents together, schematically and in perspective, the hour unit correction flipper and a tens-hour correction flipper, which is one of the arrangements necessary to allow, at midnight, the switch from the display "2" to the display "0", without the activation of a tens-hour drive mechanism by the Maltese cross, as will be explained later; this tens-hour correction flipper falls a few minutes before midnight, and relies on the hour unit correction flipper by means of a synchronizer which is a shaft carried by the tens-hour correction flipper parallel to the common pivot axis of the flippers, and whose bearing surface cooperates with a support face of the hour unit correction flipper; the figure 35 represents schematically and in perspective, together and juxtaposed, the triggering lever for the inner hour roller and the hour unit correction lever, the combination of which allows for specific display transitions, including the direct transition of the inner hour roller from position "3" to position "0" without rotation of the outer roller, and the transition of the tens hour roller from position "2" to position "0" without rotating the Maltese cross of the tens drive mechanism; to allow the direct transition 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 triggering lever for the inner hour roller; as on the figure 33 , we see, juxtaposed, the drive fingers of these two rockers, which are arranged to cooperate with the same drive star of the inner roller of the hour units; the hour unit correction rocker has a feeler finger, which is arranged to cooperate with the combined twenty-four-hour mobile, and in particular with its outer track;The transition from position "3" to position "4" is conventionally controlled by the drive finger of the trigger 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 trigger lever for the inner hour roller, its hook actuator releases the hook and allows the hour unit correction lever, freed by the twenty-four-hour wheel, to fall, and whose drive finger controls a new rotation of the star wheel of the inner hour roller for the display of position "0"; the; figure 36 represents schematically and in perspective, 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 rocker arms, corresponding to the figure 36 ; we see that the hour unit correction rocker has 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 latter's angular travel, and which escapes it at the end of the hook's angular travel under the pressure of the hook actuator; the latter is here resting on an oblique track of the hook, while neither of the two rockers has pivoted; the figure 38 illustrates the beginning of the fall of the trigger lever for the inner hour roller for the transition from position "3" to position "4"; the hook actuator pushes back the oblique track of the hook, and rotates the hook, which still cooperates with its pin, immobilizing the hour unit correction lever; the figure 39 illustrates the end of the fall of the trigger lever for the inner hour roller for the transition from position "3" to position "4"; the hook actuator pushes back the oblique track of the hook and rotates the hook, which disengages from its pin, releasing the hour unit correction lever, which, also released by the twenty-four-hour wheel, can pivot and drive, by its drive finger, the hour unit 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 allow the fall of the hour unit correction lever only twice a day, at midnight and 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 of the 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 release this lever every day at midnight, thus driving the star linked to the tens-hour roller, to move it from position "2" to position "0"; the figure 42 , represents, schematically and in perspective, the hour and tens-hour rollers, with their tens drive mechanism, in a locked position at midnight, which requires the implementation of a disengagement mechanism, already partially visible on the figure 41 and illustrated, according to a particular variant, in detail by the figures 43 à 47 This disengagement mechanism includes a self-locking wheel with a satellite, similar to that of an automatic reverser, to allow the tens-hour roller to rotate independently of the drive clover linked to the Maltese cross of the tens drive mechanism; figure 43 , represents, schematically and in perspective, the cloverleaf of the tens-of-hours roller, beneath which we see this self-locking wheel cooperating with three satellites; the figure 44 represents, in contrast to the figure 43 , the tens-hour roller comprising three tenons or pivots on which these three satellites pivot; the figure 45 The diagram schematically represents, in perspective and semi-transparently, the hour and tens-hour rollers, the tens drive mechanism, and the disengagement mechanism; when the outer hour units roller moves from the "9" position to the "0" position, it actuates the Maltese cross, which rotates the trefoil attached to the self-locking wheel; the satellites have a particular, non-reversible shape and lock into the teeth of the self-locking wheel, causing the tens-hour roller to rotate; the self-locking wheel and the tens-hour roller rotate clockwise as seen in the figure, and at least one satellite is butted against the teeth of the self-locking wheel; the figure 46 illustrious, in a similar way to the figure 45 , the transition from the instant twenty-three 59 to the instant zero hour 00, during which the fall of the seesaw on the star of the tens-hour roller causes the latter to rotate, also in the clockwise direction of the figure; the satellites can then rotate freely; the figure 47 illustrates, from a front view, the same configuration as the figure 46 ; an angular offset between the satellites is used 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 the display of Martian time, and which schematizes a gear, comprising, in sequence, an Earth wheel making a revolution in twenty-four Earth hours, a timer mobile, a Mars wheel making a revolution in 24.6596 Earth hours, a multiplier / demultiplier gear, 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 rockers, which includes the trigger rocker for the inner minute roller, the trigger rocker for the outer minute roller, the trigger rocker for the inner hour roller, the trigger rocker for the outer hour roller, the hour correction rocker, and the ten-hour correction rocker, a set of display rollers, which includes the minute roller, the ten-minute roller, the hour roller, and the ten-hour roller; the . figure 49 represents, schematically and in side view, the connection between the Earth roadway and the Mars roadway of the figure 48 , via the timer mechanism, which includes a timer pinion and a timer wheel; the figure 50 represents, schematically and in perspective, the multiplying / multiplying mechanism of the figure 48 , which includes, from the Mars wheel on which the hour cam is located, a first reduction gear to drive the twenty-four-hour wheel, and a second reduction gear to drive the minute cam and the ten-minute cam; this first reduction gear includes a minute wheel for the hours, a twelve-hour wheel, and the twenty-four-hour wheel; this second reduction gear includes an intermediate wheel, a multiplication wheel, a minute wheel carrying the minute cam, and a ten-minute wheel carrying the ten-minute cam; the figure 51 is a block diagram representing a timepiece, in particular a watch, which includes a movement that 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 100-roller jumping clock display mechanism. This 100-roller mechanism is an instantaneous jump 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 about 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 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 add-on module. In a variant not shown, the mechanism may integrate all or part of the basic movement, for example, beneath the balance return springs, which will be presented later.

[0016] More specifically, the mechanism 100 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 combination roller 10.

[0017] Such a combination roller 10 comprises at least two rollers 1A, 1B, 3A, 3B, which are internal to each other. The outer roller 1A, 3A has at least one roller window 1C, 3C, arranged to allow viewing or reading of the inner roller 1B, 3B. In the non-limiting variant shown, the rollers or combination rollers have numbers or similar characters 2.8 mm high, which is compatible with six-position rollers with an outer diameter of 6.60 mm, or 6.00 mm for an inner roller in the case of a combination roller. This arrangement ensures legibility and minimizes bulk.

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

[0019] More specifically, 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, in the arrangement 0 / 1 / 2 / 3 / 4 / 0, which simplifies the mechanism as will be seen later. The outer roller can have the arrangement 5 / 6 / 7 / 8 / 9 / (), the last symbol () corresponding to the window opening.

[0021] THE figures 6 et 7 detail a coding system, not exhaustive, used for the realization 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 rocker 11, 12, 13, 14, 15, 16, which is part of the mechanism 100, when this rocker jumps. The fall of this trigger rocker is controlled or prevented by at least one cam 21, 22, 23, 24, 244, 245, 246, 247, which is part of the mechanism 100, and which is arranged to be driven by a clockwork mechanism.

[0024] According to the invention, at least one triggering or correction rocker 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 recalled by second elastic return means 119, 129, 139, 149, 159, 169.

[0025] More specifically, each triggering or correction rocker 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 specifically, at least two triggering or correction rockers 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 includes at least one release rocker 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 release rocker 11, 12, 13, 14, in a particular angular position of this rotation control cam 21, 23.

[0028] More particularly, at least one triggering rocker 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 triggering rocker 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 specifically, at least one triggering rocker 11, 12, 13, 14 is arranged to prohibit or allow the fall of another rocker which is a correction rocker 15, 16. More specifically, at least one correction rocker 15, 16 is arranged to control the rotation of the same roller which is controlled by a triggering rocker 11, 12, 13, 14.

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

[0031] More particularly, the mechanism 100 includes at least one prohibition cam 22, 24, 244, 245, 246, 247, which is arranged to prohibit or permit the fall of such a triggering or correction rocker 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 prohibition cam 22, 24, 244, 245, 246, 247, depending on the angular position of this prohibition cam 22, 24, 244, 245, 246, 247.

[0032] For the driving of one roller by another, at least one roller 1, 1A, 1B, 2, 3, 3A, 3B, 4, or combined roller 10, is mobile in rotation controlled by a drive mechanism 50M, 50H, independent of the triggering 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] More specifically, and as can be seen in the embodiment illustrated in the figures, the mechanism 100 comprises at least one upstream display assembly 200, the rotations of whose upstream rollers 1, 2 are controlled by upstream trigger flip-flops 11, 12, and which is arranged to cooperate with a downstream display assembly 300 to which it is juxtaposed, and whose rotations of its downstream rollers 3, 4 are controlled by downstream trigger flip-flops 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 in its proper positioning. end of a cycle of the upstream display assembly 200.

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

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

[0036] More specifically, 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 that is juxtaposed to it.

[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 to each other, each elementary display being made up of such a roller 1, 1A, 1B, 2, 3, 3A, 3B, 4, or combined roller 10.

[0038] More specifically, at least one of said display groups 90M, 90H includes a drive mechanism 50 for triggering the rotation of one of the displays in this display group at the end of a cycle of another display that is juxtaposed to it.

[0039] More specifically, 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 in pairs.

[0040] More specifically, 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 from a group of displays 90M, 90H, at the end of a cycle of another display from another group of displays 90M, 90H, which is juxtaposed to it.

[0041] Advantageously, the mechanism 100 includes 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 to it. This roller synchronization mechanism includes locking means 1380, 1490, for each downstream trigger rocker 13, 14, arranged for the rotation control of the downstream display 3, bearing on lugs 528, 579, which are carried by the drive mechanism 50 of the upstream display 2, and the upstream display 2 itself, in order 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 described later.

[0042] More specifically, 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 includes at least one trigger or correction rocker 11, 12, 13, 14, 15, 16, which includes a stop support finger 1390, which is arranged to, in certain relative angular positions, cooperate in stop support with a stop 528 which includes 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 at least two groups of displays 90M, 90H.

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

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

[0045] The hours are displayed by a units-hour roller 3, juxtaposed with a tens-hour roller 4, both visible together through an hour window 6. The units-hour roller 3 is a combined roller 10, and includes 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 hour display group.

[0046] There figure 1 illustrates a dial 7 bearing apertures 5 and 6 for minutes and hours, 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 toggles which are, from left to right: the minute units triggering rocker of the inner roller 11; the minute units triggering rocker of the outer roller 12; the hour units correction rocker 15; the hour units triggering rocker of the inner roller 13; the hour units triggering rocker of the outer roller 14; the tens-of-hours correction rocker 16, whose functions are detailed below.

[0048] In a particular and non-limiting way, the rollers pivot around a common axis R; in a particular and non-limiting way, 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 combined roller 10 comprising, shown separately from left to right, an inner minute roller 1B, an outer minute roller 1A with its minute window 1C, and the assembly 1 consisting of this inner roller 1B mounted in this outer roller 1A. The hour unit roller 3 is constructed similarly, with an inner hour roller 3B, an outer hour roller 3A with its window 3C.

[0050] More specifically, at least one group of 90M, 90H displays comprises at least two rollers, one of which displays as its unit an integer multiple of the unit value of the other. More specifically still, each group of 90M, 90H displays comprises at least two rollers, one of which displays as its unit an integer multiple of the unit value 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 submultiple 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 tens in the present embodiment) are therefore not driven by flippers, but by such a drive mechanism 50.

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

[0053] Thus, each group of displays 90M, 90H comprises at least two rollers 1, 1A, 1B, 2, 3, 3A, 3B, 4, kinematically linked by such a drive mechanism 50, which, in the non-limiting version illustrated by the figures, comprises a Maltese cross 53, 55, which is arranged to be driven in rotation by a pin 109, 319, fixed to the submultiple roller, and which is rotationally fixed to a pin-type star 51, 56, which is arranged to drive, by one of its pins 511, 561, a cloverleaf 52, 54, which is carried by the multiple roller, through radial grooves 529, 541. Here, the submultiple roller, i.e., the units roller, drives in rotation a Maltese cross, which drives a pin-type star. spurs which in turn drive the roller of the multiple, here dozens.The unit rollers for 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 feature Maltese crosses for minutes 53, or hours 55.

[0054] There figure 4 represents a tens-minutes roller 2, which laterally carries a tens-minutes trefoil 52, having six radial grooves 529, which are arranged to cooperate with a star lug 511 which has a lug-star 51 coupled with a Maltese cross of minutes 53. This tens-minutes trefoil 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 rocker-limiting finger 1380 which has the hour-setting rocker of the inner roller 13, as will be explained later.

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

[0056] The lug-star 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 cloverleaf 57, which carries a rocker stop lug 579 arranged to serve as a stop support for a rocker stop finger 1490 which comprises a trigger rocker 11, 12, 13, 14.

[0057] There figure 5 represents a tens-of-hours scroll 4, which similarly bears a clover 54, visible on the figure 45 , and whose shaft includes a drive square 4160, and which laterally carries three tenons 72 or planet carrier pivots for a disengagement mechanism 70 described later. This disengagement 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, of which an inner roller 1B, 3B is arranged to be driven in rotation by a triggering rocker of the inner roller 11, 13, and of which the outer roller 1A, 3A is arranged to be driven by a triggering rocker of the outer roller 12, 14, or by a first correction rocker 15. In particular, such a combined roller 10 is a submultiple roller.

[0059] The inner roller 1B, 3B, is further arranged to be driven in rotation by the first correction rocker 15, at certain predetermined times controlled by a twenty-four-hour mobile 24 driven by the movement 500. This first correction rocker 15 is juxtaposed to the release rocker of the inner roller 11, 13, and cooperates with it via the cams of the twenty-four-hour mobile 24. The first correction rocker 15 has a lateral prominence 151, which rests on a counterbore 135, of the release rocker of the inner roller 113. This prominence 151 rests on the counterbore 135, shortly before a jump controlled by a cam 21, 23, on which bears a feeler 2111, 2313, which is part of the release rocker of the inner roller 11, 13.The correction rocker 15 also includes a drive finger 1501, which is arranged to take place next to a drive finger 1101, 1301, of the release rocker 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 release rocker of the inner roller 11, 13 falls, at a time controlled by the cam 21, 23, and for a jump allowed by the twenty-four-hour mobile 24, the first correction rocker of the hour units 15 also falls to drive in turn the star 411, 413, to drive the inner roller 1B, 3B twice.

[0060] In general, 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 4120 drive square of roller 1, the 4140 drive square of roller 3, and the 4160 drive square of roller 4. It should be noted that some rollers are not necessarily driven by rockers: this is the case here of the tens of minutes roller 2, which is driven by a 50M tens of minutes drive mechanism with Maltese cross.

[0061] There figure 6 represents a coding of the minute display, according to which is constructed the particular, non-limiting variant of the mechanism, which is illustrated by the figures, based on the rollers of the figures 3 et 4 In this particular case, in the combined rollers 10 as used for displaying minute units 1 and hour units 3, the inner roller 1B, or 3B respectively, has six positions: 0, 1, 2, 3, 4, 5, 0. The outer roller 1A, or 3A respectively, has six positions: 5, 6, 7, 8, 9, (). Double parentheses or brackets are used to encode the opening of the roller in question. This particular configuration allows for the largest possible digits in the smallest possible space, the same rocker stroke for both rollers, and the same star-jumper assembly, as can be seen in the figures, which include many identical elementary components.

[0062] The minutes table of the figure 6 It has six columns: column 1: value of the tens roller 2; column 2: value of the outer units roller 1A; column 3: value of the inner units roller 1B; column 4: number of rotations of the roller in column 2; column 5: number of rotations of the roller in column 3; column 6: number of rotations of the roller 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 painting 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] We note that, over a period of ten minutes, the inner roller 1B and the outer roller 1A each rotate six times.

[0067] More specifically, 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 in the next ten.

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

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

[0070] One line corresponds to one hour.

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

[0072] We note that columns 4 and 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, at the midnight crossing, which does not fit within the general framework, the roller must be activated by a special mechanism.

[0075] Therefore, displaying the hours requires a 23-hour cam and a twelve-hour cam (columns 4 and 5 of the table). figure 7 ) which will be described here in the form of a first twelve-hour cam 244, corresponding to column 4 of the table of the figure 7 and a second twelve-hour 245 cam 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 featuring a notch 249. In the illustrated embodiment, which is not exhaustive, a single twenty-four-hour mobile 24 groups the twelve-hour, twenty-four-hour, and correction cams, as seen on the figure 27 .

[0076] The reader may refer to these tables for an understanding of 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 90M minute display group, and includes, from right to left, the minute unit roll 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 90H hour display group and includes, from right to left, the 3 hour units roll, and the 4 tens hours roll of the figure 5 These four rollers are coaxial here, 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 attached to a star 411 held by a jumper 311; the outer minute roller 1A is attached to a star 412 held by a jumper 312; the inner hour roller 3B is attached to a star 413 held by a jumper 313; we will see later that this same star 413 is arranged to cooperate with two flippers at the same time, including a trigger flipper, and a correction flipper for certain transition configurations, which explains its double width; the outer hour roller 3A is attached to a star 414 held by a jumper 314; the tens hour roller 4 is attached to a star 416 held by a jumper 316, for its cooperation with a correction flipper, which is necessary for the problem of the transition to midnight in this particular type of display.

[0078] The tens-minutes roll 2 is not linked to a star in the present application; however, different roll coding might require it, in which case its case is to be treated similarly to the tens-hours roll 4 for its cooperation with a correction flip-flop 16 presented later.

[0079] This tens-minutes 2 roller laterally carries a 52-clover for its drive by a 50M tens drive mechanism with Maltese cross.

[0080] The tens-hour roller 4 laterally carries a cloverleaf 54 similar to that carried by the tens-minute roller 2, and having radial grooves 541; this cloverleaf 54 is integral with a self-locking wheel 73 of a disengagement mechanism 70, in the teeth of which satellites 71 mounted freely on the tenons or pivots of the satellite carrier 72 can lock. 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 minutes 53, 55, for the drive of the tens rollers 2, 4, during most passages, except for special passages at certain hours, which will all be detailed later.

[0082] THE figures 9 à 30 They show the passage of the minutes. We see the operation of the minute triggering rocker 11, pivoting around a rocker axis B, for the control of the inner roller 1B of the combined minute units roller 1. This rocker 11 is subjected to the action of a return spring 119, which tends to press a drive finger 1101, which comprises the rocker 11, on a star 411 which comprises this inner roller 1B, and which is itself subjected to the return torque of a jumper 311 for its maintenance in the rest position. The rocker 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 bear against a ten-minute cam 22, which is a straight-edged, slotted-type cam, and on the other hand a minute feeler roller 2111, which is arranged to bear against the substantially helical track of a minute cam 21, visible on the figure 15 This roughly helical track allows the feeler of each rocker arm following this cam to be raised before its jump. The feeler is typically a ruby ​​roller or similar material to reduce friction.

[0083] This 21-minute cam has a device to prevent any recoil at the moment 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 This device is illustrated as follows: the cam 21 itself pivots on a cam base 210; a pin 212, fixed 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, causing the rocker 11 to fall, and preventing any unwanted recoil movement.

[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 rocker 11 has just caused the star 411 of the roller 1B to rotate one position.

[0085] THE figures 11 à 14 are details of the cooperation sequence between, on the one hand, the driving finger 1101, which forms a movable assembly 80 mounted pivotally on a pivot 84 and which includes an elastic blade 81 movable between two front stops 82 and rear stops 83, 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. During the descent of the rocker 11, the finger 1101 makes contact with the star 411, the blade 81 leaves the first stop 82 and the finger begins to pivot, its blade 81 approaching the second rear stop 83. Upon contact between the blade 81 and the second stop 83, the star 411 pivots, and the rocker 11 accompanies the star 411 for approximately two-thirds of its step before reaching its stop, thus ensuring the passage of the top of the jump 311.

[0086] During the ascent of the rocker 11, the finger 1101 is free, until the blade 81 returns to rest on the first limiting stop 82; the blade 81 is weaker than the jumper 311 of the star 411, the blade 81 bends to pass the top of the star 411, which therefore cannot 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 traversed at the same time by two feeler rollers 2111 and 2112 which are included in two neighboring rockers 11 and 12.

[0088] There figure 17 together, this minute triggering rocker for the control of the inner roller 11, juxtaposed with the minute triggering rocker for the control of 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 permits or prohibits the fall of the respective rocker 11 or 12.

[0089] There figure 19 represents the same set shown in the position it occupies a few seconds before the jump, in a display position "04" of the minutes, in reference to the table of the figure 6 , with the display of the minute unit "4", where the outer roller 1A presents its window 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 an overall 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 transition to the next ten minutes where the inner roller 1B will present its number 0 in the window 1C of the outer roller 1A. We can see that the two ten-minute probes 2211 and 2212 are not obstructed 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. The 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 assembly 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 stop 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 rotates the latter.

[0091] THE figures 22 et 23 illustrate the drive mechanism for the ten-minute display 50M, the principle of which is also used for triggering the ten o'clock display in the other group of hour displays 90H. This mechanism surrounds the 90M display group, which includes the combined minute unit roller 1 and the single ten-minute roller 2. This mechanism is a moving part with an axis parallel to the common axis R of the shafts of the various rollers, and includes, on the side of the combined minute unit roller 1, a Maltese cross for the minutes 53, whose grooves 531 are arranged to cooperate with the pin 109, visible on the figure 17 , which this roller 1 carries, and, on the side of the tens-minutes roller 2, and fixed in rotation with this Maltese cross of the minutes 53, a pinned star 51 whose pins 511 are arranged to cooperate with the grooves 529 of the tens-minutes trefoil 52 of the figure 4 .

[0092] THE figures 24 et 25 illustrate the passage of about ten. The figure 24 represents the same assembly, shown in the position it occupies a few seconds before the jump, in overall display position "09" with a minute unit display position "9", where the outer roller 1A displays the digit 9 (column 2), while the inner roller 1B displays the digit 0 (column 3); the mechanism is ready to move to an overall display position "10", where the tens roller, until then in display position "0", will move to 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 display "0" (column 3); a groove 531 of the Maltese cross of the minute units 53 cooperates with the pawl 109 of the units roller 1. The figure 25 represents the same set after the jump, in an overall display configuration "10" where neither of the two flippers 11, 12, is stopped by the ten-minute cam 22; the outer roller 1A of the combined minute units roller 1 has pivoted, and its pawl 109 has caused the Maltese cross of minutes 53 to rotate, which, at the other end, has caused the ten-minute clover 52 to rotate, and thus the ten-minute roller 2.

[0093] The display and advance of the hours are performed in a similar manner. The 90H hour display group comprises a units-of-hours display roller 3 and a tens-of-hours display roller 4. A tens-of-hours drive mechanism 50H surrounds this 90H display group, as in the case of the minutes, and operates similarly to that of the minutes; an hour release rocker for the inner roller 13 and an hour release rocker for 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 cam 24, which includes, in particular, a twenty-four-hour cam and a twelve-hour cam. The operation of the hour advances is similar to the minute advances described above, the only significant difference being the presence of a twelve-hour cam instead of a ten-minute cam.It is understood that the invention is applicable to any combination of displays, one of which displays a multiple of the other, and to any display area. Of course, the coding of the different rollers, and the nature of the cams and correction levers, must be adapted to each specific case. For example, the rollers can occupy four, six, ten, or even twelve positions, and the multiplication factor between two rollers in the same group of displays can also be four, six, ten, twelve, or other positions, for other displays such as the calendar, moon phases, tides, or others. Thus, depending on the roller configuration, the drive mechanism 50 can also generate the drive for the multiple roller with coefficients other than ten, for example, four, six, twelve, or other.

[0094] More specifically, the 24-hour mobile here comprises a first 12 o'clock cam 244 of the triggering rocker of the inner hour roller 13, a second 12 o'clock cam 245 of the triggering rocker of the outer hour roller 14, and a 24-hour cam 246, and a correction cam 247, for managing certain hourly transitions: midnight, one o'clock in the morning, and in particular to guarantee the transition from the display "4" to the display "0". This correction cam cooperates with correction rockers 15 and 16 detailed later.

[0095] The presence of a synchronization mechanism between the display of minutes and that of hours is necessary, especially at current hours, i.e. other than midnight.

[0096] The mechanical system transmits the instantaneous jump from the units roller to the tens roller, for both hours and minutes, thanks to the respective tens drive mechanism by Maltese cross, spigot clover, and drive clover.

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

[0098] The triggering rocker of the inner roller of the hour units 13 and the triggering rocker 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 passing of the hour onto lugs to stand by.

[0099] There figure 28 represents, a few minutes before a time change, the triggering rocker of the inner roller of the hour units 13, which is similar to the triggering rocker of the inner roller of the minute units 11, and whose feeler finger 2313 has just left the hour cam 23. This triggering rocker of the inner roller of the hour units 13 has a second rocker limiting finger 1380, which is arranged to cooperate in stop support with a lug 528 which has the cloverleaf 52 of the tens-minute roller 2, which prevents the triggering rocker of the inner roller of the hour units 13 from falling until the tens-minute roller 2 has completed its rotation.

[0100] Similarly, the figure 29 represents, at the same time as the figure 28 The same mechanism, whose inner roller release lever for the hour units 13 is not shown, is not depicted in order to allow visualization of the outer roller release lever for the hour units 14, whose feeler finger 2314 has also just left the hour cam 23; this outer roller release lever for the hour units 14 also includes a second rocker stop finger 1490, which is arranged to cooperate as a stop against a lug 579 on a drive cloverleaf 57, kinematically linked to the minute Maltese cross system, and which, in the same way, prevents the outer roller release lever for the hour units 14 from falling until the minute Maltese cross 53 has completed its rotation. The drive cloverleaf 57 is notably rotatably mounted on a shaft parallel to that of the minute Maltese cross 53, as seen on the figure 29 .

[0101] When the tens-minute roller 2 rotates from the display position "5" to the display position "0", the two lugs 528 and 579 leave the path of the respective rocker arms 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 units of hours roller 3.

[0102] There figure 31 shows the entire hour-related mechanism, which incorporates a unit-hour correction rocker 15 juxtaposed with the inner unit-hour roller release rocker 13, and a ten-hour correction rocker 16 juxtaposed with the outer unit-hour roller release rocker 14; the assembly is shown in the 23:59 position. This figure also shows the two ten-hour drive mechanisms. The table of the figure 7 shows that the transition of the tens of hours, in particular from the position "23" to the position "00", does not follow the classic pattern of the transitions from "03" to "04" and from "13" to "14", because if we followed the same logic, the change of display would make it 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 about a minute.

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

[0104] THE figures 32 et 33 represent the hour unit correction rocker 15, which has a lateral protrusion 151, which rests on a counterbore 135 of the trigger rocker for the inner hour unit roller 13. The protrusion 151 rests on the counterbore 135 a few minutes before the jump, at which point it is in standby mode. The hour unit correction rocker 15 has a drive finger 1501, which is arranged to be positioned next to the drive finger 1301 of the trigger rocker for the inner hour unit roller 13, and to cooperate with a single drive star 413 of the inner hour unit roller 3B.When the triggering lever of the inner hour unit roller 13 falls at midnight, this correction lever for the hour units 15 also falls at the passing of midnight, which allows the inner hour roller 3B to be driven twice, and allows the display to change from "3" to "0", without passing through "4"; the same is true at one o'clock in the morning, as seen on the table of the . figure 7 .

[0105] There figure 34 represents, together, the hour unit correction flipper 15 and the tens-hour correction flipper 16, which together form an arrangement allowing, at midnight, the display to switch from "2" to "0" without the tens drive mechanism being activated by the Maltese cross 55. This tens-hour correction flipper 16 falls a few minutes before midnight and relies on the hour unit correction flipper 15 via a synchronizer, which is a shaft 17 carried by the tens-hour correction flipper 16, parallel to the pivot axis B common to the flippers, and whose bearing surface 172 cooperates with a support face 152 of the hour unit correction flipper 15. This figure 34 shows, again, the feeler fingers 2415 and 2416 of these two rockers 15 and 16, which are both arranged to cooperate with the twenty-four hour mobile 24 which authorizes or prohibits the fall of these rockers.

[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 rocker 15 carries a pivoting hook 154, which cooperates with a hook actuator 138 carried by the release rocker 11, 13, driving this inner roller 1B, 3B, so that, at the end of the travel of the release rocker 13, its hook actuator 138 releases the hook 154, and allows the fall of the correction rocker 15, which is released by the twenty-four hour mobile 24, for the driving of 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 time unit display requires a specific arrangement, visible on the figures 35 à 39 The transition from position "3" to position "4" is done as at the passing of each hour, but, when the triggering lever for the inner hour roller 13 reaches the end of its travel, it pushes a pivoting hook 154, which is pivotally mounted on a pivot 153 attached to a fixed element such as a plate or similar, and which releases the hour unit correction lever 15, to actuate the same star 413 a second time, and thus move from position "4" to position "0".

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

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

[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 latter's angular travel, and which disengages at the end of the hook's angular travel under the pressure 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 rocker arms 13 and 15 has pivoted. figure 38 illustrates the beginning of the fall of the trigger lever for the inner hour roller 13, for the transition from position "3" to position "4"; the hook actuator 138 pushes back the oblique track 158, and rotates the hook 154, which still cooperates with its pin 156 at the level of its concentric cylindrical track 155, immobilizing the hour unit correction lever 15. The figure 39 illustrates the end of the fall of the trigger rocker for the inner hour roller 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 rotates the hook 154, which escapes its pin 156, releasing the hour unit correction rocker 15, which, also released by the twenty-four hour mobile 24, can pivot and drive by its drive finger 1501 the inner hour unit roller 3B, which has just briefly passed into position "4" under the action of the fall of the trigger rocker for the inner hour roller 13, towards the position "0"; the twenty-four hour mobile 24 is arranged to allow the fall of the hour unit correction rocker 15 only 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 rocker 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 transition of the tens-hour roller 4 from position "2" to position "0" requires the intervention of the tens-hour correction lever 16, already presented 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 wheel 24, to release this lever 16 each day at midnight, thereby driving a star 416 linked to the tens-hour roller 4, moving it from position "2" to position "0". However, it is then necessary to short-circuit the tens drive mechanism containing the Maltese cross for the hours 55, because at midnight, the outer hour units roller 3A blocks the rotation, as the mechanism is in the situation of the figure 42 , in a locked position at midnight, which requires the implementation of a disengagement mechanism 70.

[0112] A particular variant of this 70 disengagement mechanism is partially visible on the figure 41 , and illustrated in detail by the figures 43 à 47 ; this disengagement mechanism 70 includes a self-locking wheel 73 with satellites 71, similar to that of an automatic reverser, to allow the rotation of the tens hour roller 4 independently of the drive clover linked to the Maltese cross of the hours 55 of the tens drive mechanism, which is itself blocked. The figure 43 shows the cloverleaf 54 of the tens-hour roller 4, under which cloverleaf 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 which are carried by the tens-hour roller 4.

[0113] There figure 45 illustrates a classic tens transition. When the outer roller 3A of the hour units moves from the position "9" to the position "0", it actuates the Maltese cross of the hours 55, which rotates the trefoil 54 attached to the self-locking wheel 73; the satellites 71 have a particular non-reversible shape, and lock into the teeth of the self-locking wheel 73, which causes the rotation of the tens hour 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 butted 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 arm onto the star 416 of the tens-hour roller 4 causes the latter to rotate, also in the clockwise direction shown in the figure; the satellites 71 can then rotate freely around the self-locking wheel thanks to the shape of their teeth. More specifically, an angular offset of the satellites is imposed relative to each other to reduce the blind spot.

[0115] Naturally the disengagement 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 to this 70 disengagement mechanism may, therefore, include two inputs.

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

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

[0119] A suitable timer, using gears with a reasonable number of teeth for use in a watch, comprises a 22-tooth Earth gear, which makes one revolution when a 36-tooth timer pinion makes 0.6111 revolutions, and a 43-tooth timer wheel, which cooperates with a 27-tooth Martian gear, which then makes 0.973251028806584 revolutions. The error associated with this timer is small, approximately 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] So we have a lead of about 0.58 seconds per day: when the display of Martian time changes from 23:59 to 00:00, the change takes place 0.58 seconds before the planet Mars has actually completed its rotation on its axis.

[0121] Of course, other gear ratios allow for a lower error: a 19-tooth Earth gear, which makes one revolution, while a 12-tooth timer pinion makes 1.583333 revolutions, as well as a 67-tooth timer wheel, which cooperates with a 109-tooth Martian gear, which then makes 0.973241590214067 revolutions. The error associated with this timer is then approximately minus 0.23 seconds per day, but at the cost of gears 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; it should be noted that this error is much lower than the rate error of many common watchmaking regulating organs.

[0123] There figure 48 diagram of a 600 gear, comprising, in sequence: a 610 Earth roadway making a rotation in 24 Earth hours; a 620 timer mobile; a 630 Mars roadway making a rotation in 24.6596 Earth hours; a multiplier / demultiplier gear 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 triggering and correction rockers 660, which includes the triggering rocker of the inner minute unit roller 11, the triggering rocker of the outer minute unit roller 12, the triggering rocker of the inner hour unit roller 13, the triggering rocker of the outer hour unit roller 14, the hour unit correction rocker 15, and the ten-hour correction rocker 16; a set of 670 display rollers, which here includes 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 diagram shows the connection between the Earth roadway 610 and the Mars roadway 630 via the timer mobile 620, which includes the timer pinion 621 and the timer wheel 622.

[0125] There figure 50 is a perspective view of the multiplying / multiplying gear train 640, which includes, from the Mars wheel 630 on which the hour cam 23 is located, a first multiplying gear train 641 to drive the twenty-four-hour wheel 24, and a second multiplying gear train 642 to drive the minute cam 21 and the ten-minute cam 22. This first multiplying gear train 641 includes a minute wheel for the hours 643, a twelve-hour wheel 644, and the twenty-four-hour wheel 24. This second multiplying gear train 642 includes an intermediate wheel 645, a multiplying wheel 646, a minute wheel 647 carrying the minute cam 21, and a ten-minute wheel 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. A jumping roller horology display mechanism (100) comprising, for displaying a magnitude, at least one display that comprises a roller (1, 1A, 1B, 2, 3, 3A, 3B, 4) and / or a combined roller (10) which comprises at least two said rollers (1A, 1B, 3A, 3B) one inside the other, the outer roller (1A, 3A) comprising at least one roller aperture arranged to allow viewing or reading of the inner roller (1B, 3B), each said display being held in a lock position by first resilient return means (311, 312, 313, 314, 316), and at least one said display being rotationally mobile under the control of at least one release or correction lever (11, 12, 13, 14, 15, 16) comprised in said mechanism (100) and the drop of which is controlled or prevented by at least one cam (21, 22, 23, 24, 244, 245, 246, 247) comprised in said mechanism (100) and which is arranged to be driven by a horology movement (500),said at least one release or correction lever (11, 12, 13, 14, 15, 16) being arranged to engage simultaneously with at least two said cams (21, 22, 23, 24, 244, 245, 246, 247) towards which it is returned by second resilient return means (119, 129, 139, 149, 159, 169), the display mechanism being arranged to display the value of at least one magnitude on a group of displays (90M, 90H) comprising at least two coaxial elementary displays juxtaposed with each other, each elementary display being constituted by a said roller (1, 1A, 1B, 2, 3, 3A, 3B, 4) or by a said combined roller (10) that is rotationally mobile, said rotation being controlled by a drive mechanism (50M, 50H) driven by another said roller (1, 1A, 1B, 2, 3, 3A, 3B, 4) or combined roller (10); at least one said group of displays (90M, 90H) comprises at least two said rollers (1, 1A, 1B, 2, 3, 3A, 3B, 4), one of which, which is referred to as 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 comprises, for said group of displays (90M, 90H), at least one said drive mechanism (50M, 50H) separate from said release or correction levers (11, 12, 13, 14, 15, 16), arranged to turn the roller of the multiple by one position when the roller of the submultiple has completed the rotation, or rotations, corresponding to all of its display sequences in the step of the multiple, each said group of displays (90M, 90H) comprising at least two rollers (1, 1A, 1B, 2, 3, 3A, 3B, 4) kinematically connected by a said drive mechanism (50M, 50H), the display mechanism being characterised in that said drive mechanism (50M, 50H) comprises a Maltese cross (53; 55) arranged to be rotationally driven by a pin (109; 319) fastened to the roller of the submultiple, and which is rotationally attached to a star with catches (51; 56) that is arranged to drive, via one of its catches (151; 156), a trefoil (52; 54) carried by the roller of the multiple.

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

3. The mechanism (100) according to claim 1 or 2, characterised in that said mechanism (100) comprises at least one said release lever (11, 12, 13, 14) comprising a first feeler spindle (2111, 2112, 2313, 2314) arranged to follow the profile 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. The mechanism (100) according to claim 3, characterised in that each said release lever (11, 12, 13, 14) is arranged to engage simultaneously with at least two said cams (21, 22, 23, 24, 244, 245, 246, 247) towards which it is returned by said second resilient return means (119, 129, 139, 149).

5. The 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. The 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 that is controlled by a said release lever (11, 12, 13, 14).

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

8. The mechanism (100) according to any of claims 1 to 7, characterised in that said mechanism (100) comprises at least one interlock 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) on which a second feeler spindle (2211, 2212, 2413, 2414, 2415, 2416) is arranged to interfere or not with said interlock cam (22, 24, 244, 245, 246, 247) depending on the angular position of said interlock cam (22, 24, 244, 245, 246, 247).

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

10. The mechanism (100) according to any of claims 1 to 9, characterised in that said mechanism (100) comprises at least one upstream display assembly (200), in which the rotations of the upstream rollers (1, 2) of which it is formed are controlled by upstream release levers (11, 12), and which is arranged to engage with a downstream display assembly (300) with which it is juxtaposed and in which the rotations of the downstream rollers (3, 4) of which it is formed are controlled by downstream release levers (13, 14), and said mechanism (100) comprises at least one said correction lever (15, 16) arranged to engage with one of said downstream release levers (13, 14), and a lever synchronisation mechanism (17) between said correction levers (15, 16) when said mechanism (100) comprises several thereof, for controlling the rotation of at least one display in said downstream display assembly (300) into its appropriate position at the end of a cycle of said upstream display assembly (200).

11. The mechanism (100) according to any of claims 1 to 10, characterised in that at least one said group of displays (90M, 90H) comprises a said drive mechanism (50, 50H) for releasing the rotation of one of said displays comprised in said group of displays (90M, 90H) at the end of a cycle of another display which is juxtaposed therewith.

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

13. The mechanism (100) according to any of claims 1 to 12, and claim 10, characterised in that said mechanism (100) comprises a roller synchronisation mechanism for releasing the rotation of a said downstream display in a said group of displays (90M, 90H) at the end of a cycle of another upstream display in another said group of displays (90M, 90H) which is juxtaposed therewith, said roller synchronisation mechanism comprising locking means (1380, 1490) for each said downstream release lever (13, 14) arranged to control the rotation of said downstream display (3), bearing on catches (528, 579) carried by said drive mechanism (50) of said upstream display (2), and said upstream display (2), to lock the rotation of each said downstream release lever (13, 14) during some display phases, and to synchronise the jump of said at least two groups referred to as groups of displays (90M, 90H).

14. The mechanism (100) according to any of claims 1 to 13, characterised in that said trefoil (52; 54) or said multiple roller carries a bearing catch (528) arranged to be used as a stop support for a lever limiting finger (1380) comprised in a said release lever (11, 12, 13, 14).

15. The mechanism (100) according to any of claims 1 to 12 and claim 13, characterised in that said star with catches (51; 56) in said drive mechanism (50M, 50H) of said upstream display (2) is arranged to rotate, around an axis parallel to its axis, a drive trefoil (57) which carries a lever stop catch (579) arranged to act as a stop support for a lever stop finger (1490) comprised in a said release lever (11, 12, 13, 14).

16. The mechanism (100) according to any of claims 1 to 15, characterised in that said trefoil (52; 54) or said multiple roller carries satellite-carrier posts or pivots (72) for receiving satellite wheels (71) comprised in a disconnecting gear mechanism (70) arranged to disconnect a said drive mechanism (50M, 50H), to enable the position of a said roller (1, 1A, 1B, 2, 3, 3A, 3B, 4) to be corrected by a correction lever (15; 16) and not by a said drive mechanism (50M, 50H).

17. The mechanism (100) according to any of claims 1 to 16, characterised in that said mechanism (100) comprises at least one said combined roller (10), an inner roller (1B; 3B) of which is arranged to be rotated by an inner roller release lever (11; 13), and said outer roller (1A; 3A) of which is arranged to be driven by an outer roller release lever (12; 14) or by a first correction lever (15) comprised in said mechanism (100).

18. The mechanism (100) according to any of claims 1 to 17, characterised in that at least one said combined roller (10) is a said submultiple roller.

19. The mechanism (100) according to claim 17, characterised in that said inner roller (1B; 3B) is also arranged, at certain instants which are predetermined and controlled by a twenty-four-hour mobile (24) driven by said movement (500), to be rotated by said first correction lever (15) which is juxtaposed with said inner roller release lever (11; 13) and which engages along with this lever with the cams of said twenty-four-hour mobile (24), and which comprises a lateral protrusion (151), which bears on a counterbore (135) of the inner roller release lever (11; 13), said protrusion (151) bearing on said counterbore (135) shortly before a jump controlled by a said cam (21; 23) on which bears a feeler spindle (2111; 2313) comprised in said inner roller release lever (11; 13), said correction lever (15) comprising a drive finger (1501), which is arranged to be placed next to a drive finger (1101; 1301) on said inner roller release lever (11; 13), and to engage with the same star (411; 413) on said inner roller (1B; 3B), so that, when said inner roller release lever (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 hour unit correction lever (15) also drops to drive, in turn, said star (411; 413), so as to drive said inner roller (1B; 3B) twice.

20. The mechanism (100) according to claims 6 and 17, characterised in that, to allow the direct switching of a said inner roller (1B, 3B) with a jump of two positions without rotating said corresponding outer roller (1A, 3A), a said correction lever (15, 16) carries a pivoting hook (154), which engages with a hook actuator (138) carried by the release lever (11, 13) for driving said inner roller (1B, 3B), so that, when said release lever (11, 13) reaches the end of its travel, its hook actuator (138) releases said hook (154), and allows the drop of said correction lever (15, 16), which is released by said twenty-four-hour mobile (24), for driving said inner roller (1B, 3B).

21. The mechanism (100) according to any of claims 1 to 20, characterised in that each said roller (1, 1A, 1B, 2, 3, 3A, 3B, 4) or each said combined roller (10) comprises at most six display positions.

22. The mechanism (100) according to any of claims 1 to 21, characterised in that said mechanism (100) comprises a minute display group (90M) which comprises two said rollers (1, 2), the first minute roller (1) of which is a multiple roller (10) for displaying minute units, and the second minute roller (2) of which is a single roller for displaying tens of minutes, and an hour display group (90H) which comprises two said rollers (3, 4), the first hour roller (3) of which is a multiple roller (10) for displaying hour units, and the second hour roller (4) of which is a single roller for displaying tens of hours, and in that said display mechanism (100) comprises, 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 unit roller has completed the rotation, or rotations, corresponding to all its display sequences in the tens step.

23. A timepiece (1000) comprising a mechanism (100) according to claim 22 and comprising at least one movement (500) arranged to drive the cams (21, 22, 23, 24, 244, 245, 246, 247) comprised in said mechanism, characterised in that said mechanism (100) is dedicated to the display of hours and minutes on the planet Mars, and in that a said movement (500) is arranged to drive a geartrain (600), comprising, in sequence, an Earth cannon-pinion (610) completing one revolution in 24 Earth hours, a timer mobile (620), a Mars cannon-pinion (630) which completes one revolution in 24.6596 Earth hours, a multiplier / reduction geartrain (640), a set of cams (650), which comprises 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 comprises a release lever for the inner minute unit roller (11), a release lever for the outer minute unit roller (12), a release lever for the inner hour unit roller (13), a release lever for the outer hour unit roller (14), an hour unit correction lever (15), and a tens of hours correction lever (16), and a set of display rollers (670), which comprises said minute unit roller (1), said tens of minutes roller (2), said hour unit roller (3), and said tens of hours roller (4).

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