Analog clock with additional time zone display

The analog clock uses a rotatable dial disk with recesses and intuitive hour adjustments to simplify the display of multiple time zones, addressing the complexity of existing GMT watches and enhancing usability.

DE102022101559B4Active Publication Date: 2024-12-24GROSSMANN UHREN
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Patent Information

Application Number
DE102022101559
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-01-24
Publication Date
2024-12-24
Estimated Expiration
2042-01-24

AI Technical Summary

Technical Problem

Existing GMT watches require complex mechanisms or additional components to display multiple time zones, limiting their structural simplicity and ease of use.

Method used

An analog clock with a rotatable dial disk behind the main dial, featuring recesses for displaying additional time zones, and a mechanism for intuitive hour adjustments, allowing simultaneous display of multiple time zones without additional hands or rings.

Benefits of technology

Enables simultaneous, intuitive, and visually appealing display of multiple time zones using a structurally simple design, with adjustable hour hands and digital hour indications, facilitating easy adaptation to different time zones.

✦ Generated by Eureka AI based on patent content.

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Abstract

Analog clock designed to display the time in at least two different time zones, comprising a clockwork, a pointer driven by the clockwork with at least one hour hand and one minute hand, and a dial (23) on which the time of a first time zone is displayed by means of the pointers of the pointer, wherein a rotatable dial disc (25) is arranged behind the dial (23) on which the hour values ​​of at least a second time zone are arranged in a circle, and the dial (23) has at least one recess (28) through which an hour value of the at least one second time zone can be read at any given time, the dial (23) being fixedly and the dial disc (25) being rotatably connected to a module plate (26) to form a time zone module, and the time zone module being mounted on the front of a caliber, wherein the caliber, driving the time zone module,is connected to the time zone module and the hand shafts of the caliber protrude through the time zone module, wherein the dial disc (25) is moved forward by one hour value at each full hour, characterized in that the dial disc (25) is mounted on a ratchet wheel (19) which is held in one of 24 positions in 15-degree increments by a ratchet spring (7) and which is moved to the next position by a 15-degree increment by an adjusting disc (12) at each full hour.
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Description

[0001] The invention relates to a watch which, in addition to the time in the time zone of the watch wearer, also displays the time in at least one other time zone.

[0002] An analog clock displays the time using hands on a dial. The hands are usually rod-shaped, rotatably attached to a pointer shaft protruding through a hole in the dial, and positioned above one side of the dial so that the hands sweep across a circular (partial) area of ​​the dial.

[0003] The hand mechanism is a component of a mechanical watch and consists of the parts minute wheel, quarter tube (this carries the minute hand), intermediate wheel and hour wheel (this carries the hour hand).

[0004] The hand mechanism transmits the drive to the minute wheel shaft. The minute wheel, the intermediate wheel, and the hour wheel with its reversing pinion determine the respective hand speeds. The rotational speed of the minute wheel is reduced via an intermediate wheel and a reversing pinion to the hour wheel, which then rotates at only 1 / 12 of a revolution per hour.

[0005] The gear ratio between the quarter-wheel and the hour wheel is either 1:12 or 1:24, depending on whether the scale is 12-hour or 24-hour. The hour hand is mounted on the hour wheel and the minute hand on the quarter-wheel. The quarter-wheel is connected to the minute wheel shaft and minute wheel via a slip clutch. This slip clutch allows the time to be set after pulling out the crown.

[0006] The hands of a clock are moved by a movement powered by a wound spring or a battery. The spring is wound either manually or by the movement of the clock itself, in the case of an automatic winding mechanism. Analog clocks can display other information besides the time, such as the day, date, year, or phases of the moon.

[0007] Displaying the time in a second time zone is one of the most popular complications in high-quality mechanical wristwatches. Over time, several different technical solutions have been developed for these instruments, often also referred to as GMT watches.

[0008] Watches that display two or more time zones on a single dial are already known. For this purpose, either several movements are housed in one case (e.g., Glashütte Original Senator Cosmopolite), or an additional mechanism enables the display of multiple time zones.

[0009] To display a second time zone, watches—depending on the model—require an additional hand and a 24-hour scale, an additional small subdial, or an adjustable ring indicating the different time zones. The latter is typically done using city names, each representing the reference point for the respective time zone.

[0010] The following three additional mechanisms are most commonly used: 1. A centrally located additional hour hand indicates the time in a second time zone. The distance between the additional hour hand and the main hour hand is adjustable, and the additional hour hand moves along at a constant distance from the main hour hand. 2. A centrally located additional hour hand indicates the time in a second time zone. The additional hour hand runs at half speed and displays the time of the second time zone on a separate 24-hour scale, which is located either on the dial or a bezel. 3. A small subdial is arranged on the dial, on which an additional hour hand and, in some cases, an additional minute hand indicate the time in the second time zone.

[0011] German patent DE 40 30 744 A1 discloses a watch that displays half-hour time zones. German patent CH 684 916 B5 discloses a watch with a crown that can be extended in three stages. German patent DE 873 522 C discloses a watch with a locking device for stopping a display during setting. US patent US 5 054 008 A discloses a watch with a dial featuring a South Pole projection. German patent DE 691 17 142 T2 discloses a watch with a dial depicting a world map that is unwound over 360° with Antarctica at its center. German patent DE 200 13 105 U1 discloses a watch with a dial featuring a time zone disc with place names. US patent US 2 268 239 A discloses a watch with a scale divided into 15° increments. Finally, US 197 246 A shows a clock with a dial where the South Pole is in the center and the North Pole is at the edge.

[0012] Clocks are known to display the time in various locations around the world, featuring numerous city names, usually 24, arranged on a ring. The time in these cities is indicated by a 24-hour ring that rotates once a day relative to the first ring.

[0013] A watch according to the preamble of independent claim 1 is known from CH 685 965 A3. Further known prior art documents are CH 343 915 A, CH 349 926 A, DE 18 06 686 A and WO 2007 / 030 953 A1.

[0014] The invention is based on the objective of creating a structurally simple clock for displaying the time of at least a second time zone, based on an existing clockwork mechanism, or of extending an existing clockwork mechanism to include the functionality of a time zone display.

[0015] According to the invention, the aforementioned problem is solved by the features of claim 1. Advantageous embodiments and further developments are described in the dependent claims.

[0016] A first aspect of the invention relates to a novel and particularly advantageous way in which the time of one or more second time zones can be displayed on an analog clock known per se.

[0017] An analog clock is proposed which is designed to display the time in at least two different time zones and which comprises a clockwork, a pointer driven by the clockwork with at least one hour hand and one minute hand, and a dial on which the time of a first time zone is displayed by means of the pointers of the pointer, wherein a rotatable dial disc is arranged behind the dial on which the hour values ​​of at least a second time zone are arranged in a circle, and the dial has at least one recess through which an hour value of the at least one second time zone can be read at any time.

[0018] In other words, unlike conventional GMT watches, the time in an additional time zone is no longer indicated by extra hands or rings. Instead, a dial disc with printed hour values ​​is positioned behind the main dial, with one hour value visible through a cutout at a time. The minute value can be read from the minute hand of the first time zone. The cutout on the dial can be labeled, for example, with the name of the displayed time zone or the name of a major city located within that time zone.

[0019] The invention allows for a novel and unique way of displaying the times of one or more other time zones alongside the first. The solution according to the invention makes it possible to display the times of a multitude of time zones simultaneously and very intuitively in a particularly attractive manner.

[0020] According to a first embodiment of the proposed analog clock, the dial may have several, preferably up to seven, recesses, the recesses being at different distances from the center of the dial, and the hour values ​​of a number of different time zones corresponding to the number of recesses being arranged in a circular pattern, but with different diameters, on the dial disc.

[0021] There are no limits to the arrangement of the one or more cutouts on the dial. This means that particular attention must be paid to the alignment of the hour values ​​for one or more second time zones displayed on the dial disc. If a cutout is not located on the horizontal or vertical axis of the dial, a complex alignment process is required for each individual hour value to ensure that each value is displayed and can be read correctly.

[0022] A particularly visually appealing and attractive design for the proposed clock can be achieved by placing a section of a world map on the dial, with at least one cutout positioned at a location on the map corresponding to a major city. There are no limits to the choice of the section, and in almost every case, multiple cutouts can be positioned to display several second time zones simultaneously.

[0023] The first time zone on the proposed clock is displayed entirely analogously using hour, minute, and, if applicable, second hands. The display of one or more second time zones, however, is semi-analog (regarding the minutes) and semi-digital, i.e., using discrete numerical values ​​(regarding the hours). Therefore, the dial disc is designed to advance by one hour value at the top of each hour. This ensures that the hour value of each second time zone is always fully visible in its respective recess and only changes to the next hour value once, namely at the top of the hour.

[0024] To achieve an hourly switching of the hour values ​​of one or more second time zones, the invention provides that the dial disc is mounted on a ratchet wheel which is held in one of 24 positions in 15-degree increments by a ratchet spring and which is moved by a setting disc by one 15-degree increment to the next position at each full hour.

[0025] A second aspect of the invention relates to the implementation of an additional time zone display using a caliber that is complete in itself.

[0026] It is proposed to connect the dial to a fixed, rotatable time zone module and the dial disc to a module plate. This time zone module is then mounted on the front of a movement, with the movement itself driving the module. The movement's hand shafts protrude through the time zone module. This allows for the functionality of displaying one or more additional time zones to be retrofitted to existing movements at any time. Only a mechanical coupling between the time zone module and the movement is required.

[0027] In a further embodiment, it can be provided that the ratchet wheel and the ratchet spring are components of the time zone module and the setting disc is a component of the caliber and performs a full revolution every hour, with part of the revolution being a jumping revolution at each full hour.

[0028] A third aspect of the invention relates to the possibility of adjusting the display of the first time zone to the user's actual location, for example when traveling, without affecting the display of the other time zones, whose time does not change as a result.

[0029] It is further proposed that the hands of the clockwork and the dial disc be jointly adjustable via a winding shaft of the clockwork, and that the hour hand of the clockwork be additionally and independently quickly adjustable via a setting shaft in order to adapt the display of the first time zone to the location of the user of the watch.

[0030] For example, it can be provided that the adjusting shaft can be moved into one of three angular positions by rotating it, wherein in a first angular position the axial movement of the adjusting shaft is blocked, in a second angular position an axial pressure on the adjusting shaft causes a forward adjustment of the hour hand by one hour, and in a third angular position an axial pressure on the adjusting shaft causes a backward adjustment of the hour hand by one hour.

[0031] According to one embodiment, the adjusting shaft has a detent plate with three detent recesses, and a detent plate spring snaps into one of the three detent recesses in each of the three angular positions.

[0032] According to a further embodiment, the adjusting shaft may have an adjusting lever which, in the second and third angular positions, acts on a lever arm when axial pressure is applied to the adjusting shaft, and the two lever arms, when axial pressure is applied to the adjusting shaft, cause the hour hand to move in 30-degree increments in one direction of rotation by one hour.

[0033] According to another embodiment, it can be provided that an hour ratchet wheel is arranged on the hour wheel, which is moved by the hour wheel in normal operation and which can be rotated relative to the hour wheel in 30-degree increments against the force of an hour ratchet spring.

[0034] In a further embodiment, it can be provided that the two lever arms each act in a direction of rotation on a corrector disc, which is thereby brought into engagement with the hour ratchet wheel and the hour ratchet wheel is thereby rotated relative to the hour wheel by a 30-degree step.

[0035] The invention is explained in more detail below with reference to exemplary embodiments and accompanying drawings. Fig. 1. An overall view of the clockwork without the case, Fig. 2 the basic elements of the time zone display that cooperate according to the invention, Fig. 3 Design variants of the proposed analog clock made possible by the invention, Fig. 4 a sectional view of the time zone module, which is driven by the caliber, Fig. 5 the complete mechanism of the quick-adjustment of the hour hand and the switching of the dial disc in a top view, Fig. 6 a perspective view of the mechanics from Fig. 4 from the dial side, Fig. 7 a perspective view of the mechanics from Fig. 4 from the back, Fig. 8 the quick-adjustment of the hour hand, Fig. 9 the switching of the dial disc.

[0036] In Fig. Figure 1 shows an overall view of the movement of the proposed clock according to an exemplary embodiment. The winding stem 29 at the 3 o'clock position and the setting stem 1 at the 10 o'clock position are visible. In the center of the dial 23 are the hour and minute hands, as well as the second hand for the analog display of the time in a first time zone.

[0037] The dial 23 is shown here in a simplified representation, without indices, and the analog hands are also absent. However, it is evident that the dial 23 has six cutouts 28, arranged at varying distances from the center of the dial 23. A different hour value is displayed as a number in each cutout 28. The cutouts 28 on the dial 23 are labeled with the names of various metropolitan areas located in the time zones whose hour value can be read in the respective cutout 28. In this example, these are Brisbane, Tokyo, Dubai, Reykjavik, Buenos Aires, Phoenix, and Honolulu.

[0038] In Fig. 2 shows the interaction of the basic elements of the time zone display: On a template 30 (top left illustration), 24 hour value positions are marked in seven concentric circles, simultaneously indicating possible positions for cutouts 28 of the dial 23. While for each circular arrangement of these hour value positions, selecting only one for the position of a cutout 28 of the dial 23 is meaningful, on the dial disk 25 (top middle illustration) located behind the dial 23, each circular arrangement of hour values ​​for which a cutout 28 is actually provided in the dial 23 must be fully occupied with printed hour values.

[0039] Since in the exemplary embodiment of Fig. Since there are indeed seven recesses 28, each belonging to one of the seven circular arrangements, all hour value positions of all seven circles on the dial disc 25 must be fully occupied. It should be noted that the inclination of the printed hour values ​​depends on the specific position of the recess 28 through which the hour values ​​of the respective circular arrangement are to be readable.

[0040] In this specific case, the positions of the recesses 28 are chosen such that the in Fig. 1 visible designations of the recesses 28 correspond to the position of the respective metropolis in the selected section of the world map 31, which is shown in the upper right illustration.

[0041] By combining the three interacting basic elements of the time zone display—namely, the selection of the positions of the cutouts 28 on the dial 23 according to template 30, the dial disc 25 with the hour values, whose inclination is adapted to the position of the respective cutout 28, and the selected section of the world map 31—one obtains an analog clock that, in addition to the analog display for one time zone, enables a simultaneous analog-digital hybrid display for seven further time zones. The manner in which these time displays are presented is of high aesthetic value and absolutely unique in this form.

[0042] Fig. Figure 3 shows, using a total of 15 examples, the unparalleled variety of design possibilities, which, by focusing the representation on different continents, enables the service of all markets worldwide in a way that no other GMT concept can offer.

[0043] In the exemplary embodiment, the functionality of the time zone display is implemented in a separate time zone module, which is mounted on a caliber and mechanically connected to it in such a way that the caliber drives the time zone module. Fig. Figure 4 shows a cross-section through the time zone module.

[0044] A base 24 and a dial support 27 are attached to the center of the module plate 26. The dial 23 rests on these two elements and is fastened to three threaded posts, which are attached to the module plate 26, by means of three screws passing through three through-holes in the base 24. A bearing bushing 22 surrounds the base 24 and carries the ratchet wheel 19, to which the dial disc 25 is screwed. The dial disc is located between the dial 23 and the module plate 26.

[0045] The complete mechanism for the quick-adjustment of the hour hand and the switching of the dial disc is in Fig. 5 in a top view, i.e. from the dial side, in Fig. 6 in a first perspective view, also from the dial side, and in Fig. 7 shown in a second perspective view, from the back.

[0046] The dial disc 25 fills the entire area behind the dial 23 and is attached to the ratchet wheel 19, which is mounted centrally on the module plate 26 by means of the bearing bushing 22. The ratchet wheel 19 is held in one of 24 possible positions by the detent spring 7, the fine adjustment of which is possible via the eccentric detent spring 9 and the player 11.

[0047] The drive of the ratchet wheel 19, and thus of the dial disc 25, causes the desired jumping switching of the time zone display. For this purpose, the caliber drives a setting disc 12, which completes a full rotation every hour. The setting disc 12 has an outer contour whose distance from the center of rotation continuously increases, so that this outer contour deflects a roller 14, located at the free end of a switching lever 15 that is rotatable in one direction, against the increasing force of a switching spring 16.

[0048] At the end of a full rotation, i.e., at the top of the hour, the outer contour of the setting disc 12 allows the switching lever with the attached roller 14 to be abruptly moved back towards the setting disc 12 by the switching spring 16. This imparts a rotational impulse to the setting disc 12, which causes a lug of the setting disc 12, engaging with the outer teeth of the ratchet wheel 19, to abruptly rotate the ratchet wheel 19 further. This rotation is limited by the ratchet spring 7, which also engages with the outer teeth of the ratchet wheel 19, jumping forward by one tooth. This moves the ratchet wheel 19 no more than a 15-degree step to the next position, thus indicating the next hour value in the recess(s).

[0049] The switching of the dial disc 25 occurs hourly in a jumping form when the centrally located minute hand passes the 12 and triggers the system of the switching spring 16 in conjunction with the setting disc 12.

[0050] The adjusting disc 12 is continuously in the power flow with the drive mechanism. Due to its gear ratio, it rotates once per hour. As the adjusting disc 12 rotates, the roller 14, which is attached to the free end of the pivotally mounted switching lever 15, is moved outwards along the outer contour of the adjusting disc 12, i.e., away from the axis of rotation of the adjusting disc 12. This continuously tensions the switching spring 16, which is in contact with the underside of the switching lever 15, a crucial factor for switching the dial disc 25. The switching spring 16, located below the switching lever 15, becomes increasingly tensioned as the adjusting disc 12 rotates, pressing the switching lever, including the roller 14, ever closer to the outer contour of the adjusting disc 12.

[0051] Just before the centrally running minute hand passes the 12, the roller 14, which rests against the outer contour of the setting disc 12, together with the switching lever 15, is furthest from the axis of rotation of the setting disc 12, and the switching spring 16 is thus fully tensioned. As the minute hand passes the 12, the roller 14, with the switching lever 15, finally drops over the step in the outer contour of the setting disc 12 and causes the setting disc 12 to snap forward (clockwise). This engages the ratchet wheel 19, which is then advanced by one position.

[0052] Below the setting disc 12 is a toothed driver (not shown) that engages with the change wheel and ultimately connects to the drive mechanism. The driver contains a pin that limits the movement of the setting disc 12. After the dial disc 25 has been switched, the setting disc 12 is drawn back into position by the driver after a few minutes, and the process begins again. Because the disc is very large and relatively heavy, a detent spring 7 has been integrated. This engages with the detent wheel 19 and prevents the dial disc 25 from skipping several hours due to inertia.

[0053] The hour wheel 10, with the hour ratchet wheel 8 mounted on it, is also centrally mounted. In normal operation, the hour ratchet wheel 8 is held in place by an hour ratchet spring 17, so that it moves in sync with the hour wheel 10. For quick adjustment of the hour hand, the force of the hour ratchet spring 17 can be overcome by a quick-adjustment mechanism, thereby moving the hour ratchet wheel 8 relative to the hour wheel 10.

[0054] In this exemplary embodiment, this quick-adjustment mechanism comprises the adjusting shaft 1, which can be rotated and axially displaced. The adjusting shaft 1 has a detent plate 2 with three detent recesses. By rotating the adjusting shaft 1, it can be moved into one of three angular positions. In each of the three angular positions, a detent plate spring 21 engages in one of the three detent recesses. In the middle of the three angular positions, axial movement of the adjusting shaft 1 is prevented because the detent plate abuts a stop inside the housing. When the adjusting shaft 1 is rotated in one of the two possible directions of rotation, it moves into one of the other two angular positions. In each of these two angular positions, the adjusting lever 4 arranged on the adjusting shaft 1 aligns itself so that, when axial pressure is applied to the adjusting shaft 1, it acts on either a first lever 5 or a second lever 20.

[0055] The two levers 5 and 20, in turn, act on the corrector disc 6, which has teeth facing the hour ratchet wheel 8. The corrector disc 6 is engaged with the hour ratchet wheel by the action of one of the two levers 5 or 20 against the force of a corrector spring 18, and the hour ratchet wheel 8 is rotated relative to the hour wheel 10 by the action of the corrector disc 6, thus ultimately resulting in the rapid adjustment of the hour hand. Depending on which of the two levers 5 or 20 acts on the corrector disc 6, the hour hand is advanced or retracted by one hour.

[0056] Power is transmitted from the setting shaft 1 and the setting shaft drive 3 via a lever arm system 5, 20 to the corrector disc 6, which is aligned towards the center. The corrector disc 6 has the same toothing as the hour wheel (number of teeth and module are identical). Each time the crown is pressed, regardless of the main time setting and the dial disc 25, the system advances the hour hand by one position, i.e., by a full hour. Independent switching is ensured by the hour detent spring 17, which is riveted to the hour detent wheel 8. Its spring force is designed so that it first detent the hand one position before overcoming the actual drive force. The hour wheel 10 running below it thus remains in its previous position and unaffected.

[0057] The switching process is performed in a jumping manner. The process is possible and identical in both directions (forward and backward).

[0058] There are a total of 3 crown positions, in which the crown or the setting shaft 1 is locked by the interaction of the detent spring 21 with the detent plate 2 of the setting shaft 1. In the center position, the pusher cannot be operated because a stop has been incorporated into the movement. This position serves as the zero position in normal operation and everyday use.

[0059] Depending on the crown position, the forces from lever arm 5 or 20 act on the rear surfaces of the corrector disc 6, which is guided via an elongated hole and tilts into the hour ratchet wheel 8, causing it to click one position forward or backward. Subsequently, the corrector disc 6 and the corresponding lever arm 5, 20 are moved back to their starting positions by the spring forces, before the hour hand can finally be corrected by another hour (one press corresponds to one hour). Operating the watch in normal operation

[0060] The setting of the hands and the dial disc 25 is done as usual via the winding stem. The hour hand is then corrected using the newly developed, user-friendly pusher function.

[0061] Should the operator fly from New York to Berlin, he only needs to operate the pusher of the adjusting shaft 1 to correct the hour hand according to the time difference.

[0062] To avoid disrupting the entire system and changing the time zones of the depicted metropolises, which have not changed, the crown at 10:00 serves for convenient quick adjustment.

[0063] The operator engages the crown in the correct position and then uses the newly developed pusher function. Each time the crown is pressed (in this example, engaged in the "forward" position), the hour hand advances by one full hour, regardless of the main time or the displayed time zones. Thanks to the quick-adjustment mechanism, which is independent of the movement, the dial disc (25) and the minute hand remain in their positions. The hours displayed in the respective recesses of the dial (23) remain correct.

[0064] If the operator returns to his starting point A, he repeats the process, coupling the crown back to the "re-engaged" position at 10:00 o'clock. Full winding of the watch

[0065] The clock is stored in a cupboard over the weekend and stops running after its operating time expires. Therefore, neither the local time nor the time of the displayed metropolitan areas AA, BB, CC, etc., is shown correctly.

[0066] The operator winds the watch as usual via the crown of the winding shaft and then sets not the local time, but that of a freely chosen city shown in one of the recesses of the dial 23, such as Metropole CC.

[0067] The adjustment is possible both forwards and backwards. Moving forwards, the dial disc 25 moves in a series of jumps; moving backwards, it moves continuously. With each full rotation of the minute hand, the dial disc 25 advances one position. One position corresponds to a full hour in each of the seven notches.

[0068] Finally, the operator uses the quick-adjustment mechanism on the adjusting shaft at the 10 o'clock position to correct the centrally positioned hour hand. All time displays are now correct. Reference symbol list 1 adjusting shaft 2 rack plates 3 Control shaft drive 4 adjusting levers 5 Lever arm 1 6 Corrector disc 7 Detent spring 8-hour rest cycle 9 Eccentric detent spring (up / down) 10-hour wheel 11 players (forward / backward) 12 Adjusting disc 13 Stop gearshift lever 14 rolls 15 gear levers 16 Shift spring 17 hour spring 18 Corrector spring 19 ratchet wheel 20 Lever arm 2 21 Detent plate spring 22 Bearing bushing 23 dial 24 sockets 25 dial disc 26 module plate 27 dial overlay 28 recess 29 Lifting shaft 30 stencil 31 Excerpt from a world map 32 cases

Claims

[1] Analogue clock designed to display the time in at least two different time zones, comprising a clockwork, a pointer mechanism driven by the clockwork and having at least one hour hand and one minute hand, and a dial (23) on which the time of a first time zone is displayed by means of the hands of the pointer mechanism, wherein a rotatable dial disc (25) is arranged behind the dial (23), on which the hour values ​​of at least one second time zone are arranged in a circle, and the dial (23) has at least one recess (28) through which an hour value of the at least one second time zone can be read at any time, the dial (23) is fixedly connected and the dial disc (25) is rotatably connected to a module plate (26) to form a time zone module, and the time zone module is mounted on the front of a calibre, wherein the calibre, driving the time zone module,is connected to the time zone module and the hand shafts of the calibre extend through the time zone module, whereby the dial disc (25) is moved forward by one hour every full hour, characterized by that the dial disc (25) is mounted on a ratchet wheel (19) which is held in one of 24 positions in 15-degree steps by a ratchet spring (7) and which is moved by a setting disc (12) every full hour by a 15-degree step to the next position. [2] Analogue clock according to claim 1, in which the dial (23) has a plurality of, preferably up to seven, recesses (28), wherein the recesses (28) have different distances from the centre of the dial (23) and on the dial disc (25) the hour values ​​of a number of different time zones corresponding to the number of recesses (28) are arranged in a circle, but with different diameters. [3] Analogue clock according to one of the preceding claims, in which a section of a world map (31) is arranged on the dial (23) and the at least one recess (28) is arranged at a location on the world map (31) which corresponds to the location of a metropolis. [4] Analogue clock according to one of the preceding claims, in which the ratchet wheel (19) and the ratchet spring (7) are components of the time zone module and the setting disc (12) is a component of the calibre and performs a full revolution every hour, with part of the revolution occurring in a jumping manner at every full hour. [5] Analogue clock according to one of the preceding claims, in which the hands of the movement and the dial disc (25) are jointly adjustable via a winding shaft (29) of the movement, and the hour hand of the movement is additionally and independently quickly adjustable via a setting shaft (1) in order to adapt the display of the first time zone to the location of the user of the clock. [6] Analogue clock according to claim 5, in which the setting shaft (1) can be brought into one of three angular positions by turning, wherein in a first angular position the axial mobility of the setting shaft (1) is blocked, in a second angular position an axial pressure on the setting shaft (1) causes a forward adjustment of the hour hand by one hour and in a third angular position an axial pressure on the setting shaft (1) causes a backward adjustment of the hour hand by one hour. [7] Analogue clock according to claim 6, wherein the setting shaft (1) has a locking plate (2) with three locking recesses and a locking plate spring (21) snaps into one of the three locking recesses in each of the three angular positions. [8] Analogue clock according to claim 6 or 7, in which the setting shaft (1) has a setting lever (4) which, in the second and third angular positions, acts on a lever arm (5, 20) in each case when axial pressure is applied to the setting shaft (1), and the two lever arms (5, 20) cause a movement of the hour hand in each direction of rotation by one hour in 30-degree steps when axial pressure is applied to the setting shaft (1). [9] Analogue clock according to claim 8, in which an hour ratchet wheel (8) is arranged on the hour wheel (10), which is moved by the hour wheel (10) during normal operation and which can be rotated in 30-degree steps relative to the hour wheel (10) against the force of an hour ratchet spring (17). [10] Analogue clock according to claim 9, in which the two lever arms (5, 20) each act in a direction of rotation on a corrector disc (6), which is thereby brought into engagement with the hour ratchet wheel (8) and the hour ratchet wheel (8) is thereby rotated relative to the hour wheel (10) by a 30-degree step.

Citation Information

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