EP1271268B1 - Timepiece with two time zones - Google Patents

Timepiece with two time zones Download PDF

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Publication number
EP1271268B1
EP1271268B1 EP01115549A EP01115549A EP1271268B1 EP 1271268 B1 EP1271268 B1 EP 1271268B1 EP 01115549 A EP01115549 A EP 01115549A EP 01115549 A EP01115549 A EP 01115549A EP 1271268 B1 EP1271268 B1 EP 1271268B1
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EP
European Patent Office
Prior art keywords
time
wheel
hand
primary
hour
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP01115549A
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German (de)
French (fr)
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EP1271268A1 (en
Inventor
Carole Forestier-Kasapi
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Richemont International SA
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Richemont International SA
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Priority to EP01115549A priority Critical patent/EP1271268B1/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
    • G04B27/026—Mechanical devices for setting the time indicating means by making use of the winding means for several clockworks or pairs of hands and/or supplementary functions
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/22—Arrangements for indicating different local apparent times; Universal time pieces
    • G04B19/23—Arrangements for indicating different local apparent times; Universal time pieces by means of additional hands or additional pairs of hands
    • G04B19/235—Arrangements for indicating different local apparent times; Universal time pieces by means of additional hands or additional pairs of hands mechanisms for correcting the additional hand or hands

Definitions

  • the present invention relates to a mechanical watch with two non-concentric analog displays, including a primary display indicating the local time and a secondary display indicating the time of any time zone, including a primary hour hand and a needle. primary minutes, a secondary hour hand and a secondary minute hand, and comprising a winding crown for occupying three distinct axial positions, a first position for winding the watch, a second position for changing the time of the secondary display and a third position for the synchronous setting of the two displays.
  • a universal mechanical watch with an additional display for indicating the time of any time zone is known from the patent CH 673196 .
  • the correction of the additional display is done by the winding stem in its intermediate date setting position. As this is achieved by a conventional date wheel, which only works in one direction, the correction of the additional display is only possible in one direction, which presents significant disadvantages to the user.
  • the drive mechanism described in this patent includes a separate return system for driving the additional switch and further comprising a jumper mechanism for driving the barrel wheel of the additional switch, which could also cause disadvantages regarding the complexity and accuracy of the mechanism.
  • the object of the present invention is to overcome these disadvantages and the invention is characterized for this purpose by the fact that the secondary hour hand of the secondary display is adjustable in both directions, forward and backward, by no one hour independent of the primary display using the winding crown in its second position, positioning a rocker so that a timezone pinion is driven through two pinions mounted on said rocker.
  • Said time zone gear causes the gearing of the secondary display to engage with a time zone deflection so as to correct the time of the time zone in steps of one hour according to the direction of rotation of the winding crown. The correction of the time zone time indicated in the secondary display is thus easy and fast.
  • an embodiment of a watch according to the The invention is characterized in that the workings of the two displays are driven in their clockwise movement by means of a central pinion driving a primary timer mobile and a secondary timer mobile transferring the animation to the workings carrying the needles d display.
  • These wheels include a primary hour wheel and a secondary hour wheel as well as a primary minute gear and a secondary minute gear.
  • the central gear thus allows both the time of the two displays and the synchronous time setting of the two displays when it is driven via a mobile time setting. engaged with the primary gear mounted on the rocker, when it is in its third position.
  • the secondary hour hand is connected to the workings of the secondary display by means of an elastic clutch working in a plane and defining twelve stable positions for the secondary hour hand.
  • This resilient clutch includes the secondary hour wheel, a time zone wheel carrying the secondary hour hand, and a star with twelve teeth mounted on this time zone wheel and a spring mounted on the secondary hour wheel. that the teeth of said star can pass on this spring, when the timezone wheel is driven by the time zone return to shift the secondary hour hand in steps of one hour relative to the hour hand primary.
  • this spring of the elastic clutch by a continuous spring and closed on itself having in its interior two arcs intended to cooperate with two opposite notches of the star integral with the time zone wheel.
  • the spring further comprises two slots traversed by two separate pins integral with the secondary hours wheel to be driven by it. This allows rotation of the time zone wheel with respect to the secondary hour wheel using the twelve stable positions provided by the star teeth. A clutch working in a plane is thus achieved in a particularly simple manner.
  • a watch according to the invention can also be equipped with an elongated brake having a primary toothing and a secondary toothing at its ends, mounted pivotally and controlled by the rocker.
  • an elongated brake having a primary toothing and a secondary toothing at its ends, mounted pivotally and controlled by the rocker.
  • Such a brake is intended on the one hand, when the winding crown is in its second position to change the time of the secondary display, to mesh with the secondary toothing in the toothing of the secondary minute gear to prevent a movement of the secondary minute hand when the secondary hour hand of the time zone is corrected by one-hour jump.
  • this brake is intended, when the winding crown is in its third position for setting the synchronous time of the two displays, to mesh with the primary teeth in a board frictionally mounted on the central gear. to prevent movement of the basic drive train during this time setting.
  • a brake of this type thus makes it possible in a simple way to avoid any kind of unwanted influence of an operation on a train to another wheel and to separate the functions of the various wheels during the time setting or correction of the wheel. time zone on the one hand and normal walking or winding on the other.
  • the figure 1 schematically illustrates the watch dial side, including showing the two displays.
  • the figure 2 is a schematic plan view of the mechanism according to the invention, the rocker being in the position to change the time of the secondary display.
  • the figure 3 is a schematic plan view of the mechanism according to the invention, the latch being in the synchronous setting position of the two displays.
  • the figure 4 is a schematic plan view of the mechanism according to the invention, the latch being in the winding position of the watch and the normal running of the watch.
  • the figure 5 represents a sectional view along the line I - I of the figure 2 .
  • the watch represented at figure 1 has two non-concentric analog displays, one as a primary display 1 having a primary hour hand 2 and a primary minute hand 3 for indicating the local time and the other as a secondary display 4 having a secondary hour hand 5 and a secondary minute hand 6 for indicating the time of any time zone.
  • the winding crown 7 of the watch may occupy three distinct axial positions, a first winding position 7a of the watch, a second position 7b intended for time zone correction and a third position 7c for setting the time.
  • synchronous two displays being understood in particular that the last two functions are intended to be performed in both directions, forwards and backwards.
  • the drive mechanism according to the figure 2 comprises two switches driven in their clockwise movement by a central pinion 8 in engagement with two mobile timers 9a and 9b transferring the animation to the workings carrying the display hands.
  • the primary timer wheel 9a drives the primary hour wheel 10 carrying the primary hour hand 2 and the primary minute pinion 11 carrying the primary minute hand 3.
  • the secondary timer wheel 9b drives the secondary hour wheel 12 connected to the secondary hour hand 5 via a resilient clutch described herein. below and the secondary minute gear 13 carrying the secondary minute hand 6 of the time zone.
  • the elastic clutch which connects the secondary hour wheel 12 to the secondary hour hand 5, operates in one plane and defines twelve stable positions for the secondary hour hand 5. It includes the secondary hour wheel 12 and a time zone wheel 14 carrying the secondary hour hand 5. It also comprises a star 16 with twelve teeth mounted on this time zone wheel 14 and a spring 15 mounted on the secondary hour wheel 12 so that the teeth of the star 16 can pass on this spring 15, when the time zone wheel 14 is driven by the time zone return 17, to shift the secondary hour hand 5 in steps of one hour relative to the Primary hour hand 2.
  • the spring 15 of the elastic clutch is a continuous spring and closed on itself. It has on the one hand inside its two arches 15a intended to cooperate with two opposite notches 16a of the star 16 secured to the time zone wheel 14. It also comprises two slots traversed by two separate pins 15b integral with the secondary hour wheel 12, to be driven by it.
  • This configuration thus allows rotation of the time zone wheel 14 with respect to the secondary hour wheel 12 by using the twelve stable positions provided by the teeth of the star 16, without the need for a movement perpendicular to the plane of the rotation. , and avoids the loss of unnecessary space. By executing this rotation, it is therefore possible to change the time of the time zone in steps of one hour.
  • the rocker 20 brings the primary pinion 21 of the rocker 20 into engagement with the time setting wheel 19 to drive the central pinion 8, which allows a setting of synchronous time of the two displays.
  • the first position 7a of the winding crown 7 simply serves to reassemble the watch in a conventional manner.
  • the elongated brake 23 having a primary toothing 23a and a secondary toothing 23b at its ends is pivotally mounted. It is intended to occupy three different positions depending on the position of the rocker 20 and it is controlled by the latter.
  • this brake 23 meshes by the secondary toothing 23b in the toothing of the secondary minute gear 13 to prevent a movement of the secondary minute hand 6 when the secondary hour hand 5 of the time zone is corrected by one-hour jump.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Electromechanical Clocks (AREA)

Description

La présente invention a pour objet une montre mécanique avec deux affichages analogiques non-concentriques, dont un affichage primaire indiquant l'heure locale et un affichage secondaire indiquant l'heure d'un fuseau horaire quelconque, comportant une aiguille des heures primaire et une aiguille des minutes primaire, une aiguille des heures secondaire et une aiguille des minutes secondaire, et comprenant une couronne de remontoir destinée à occuper trois positions axiales distinctes, dont une première position pour remonter la montre, une deuxième position pour changer l'heure de l'affichage secondaire et une troisième position pour la mise à l'heure synchrone des deux affichages.The present invention relates to a mechanical watch with two non-concentric analog displays, including a primary display indicating the local time and a secondary display indicating the time of any time zone, including a primary hour hand and a needle. primary minutes, a secondary hour hand and a secondary minute hand, and comprising a winding crown for occupying three distinct axial positions, a first position for winding the watch, a second position for changing the time of the secondary display and a third position for the synchronous setting of the two displays.

Une montre universelle mécanique avec un affichage additionnel destiné à indiquer l'heure d'un fuseau horaire quelconque est connue du brevet CH 673196 . La correction de l'affichage additionnel se fait par la tige de remontoir dans sa position intermédiaire de mise à la date. Comme cela est réalisé par un rouage de quantième conventionnel, qui ne marche que dans un sens, la correction de l'affichage additionnel n'est possible que dans un sens, ce qui présente des inconvénients importants à l'usager.A universal mechanical watch with an additional display for indicating the time of any time zone is known from the patent CH 673196 . The correction of the additional display is done by the winding stem in its intermediate date setting position. As this is achieved by a conventional date wheel, which only works in one direction, the correction of the additional display is only possible in one direction, which presents significant disadvantages to the user.

Le mécanisme d'entraînement décrit dans ce brevet comprend un système de renvois séparés destinés à entraîner l'aiguillage additionnel et comportant en plus un mécanisme à sautoir en ce qui concerne l'entraînement de la roue de canon de l'aiguillage additionnel, ce qui pourrait également provoquer des inconvénients concernant la complexité et la précision du mécanisme.The drive mechanism described in this patent includes a separate return system for driving the additional switch and further comprising a jumper mechanism for driving the barrel wheel of the additional switch, which could also cause disadvantages regarding the complexity and accuracy of the mechanism.

Il existe notamment aussi d'autres montres dont la tige de remontoir est susceptible d'occuper trois positions axiales distinctes, comme décrit dans le brevet CH 507 544 , où la position intermédiaire de la tige de remontoir sert à régler l'aiguille des heures supplémentaire. Comme l'aiguille des heures supplémentaire est montée sur l'affichage principal concentrique, l'affichage dans une telle montre est peu lisible.There are also other watches including the winding stem is likely to occupy three distinct axial positions, as described in the patent CH 507 544 , where the intermediate position of the winding stem serves to adjust the extra hour hand. Like the hour hand additional is mounted on the concentric main display, the display in such a watch is unreadable.

Le but de la présente invention est de remédier à ces inconvénients et l'invention est caractérisée à cet effet par le fait que l'aiguille des heures secondaire de l'affichage secondaire est réglable dans les deux sens, en avant et en arrière, par pas d'une heure indépendamment de l'affichage primaire en utilisant la couronne de remontoir dans sa deuxième position, positionnant une bascule de manière à ce qu'un pignon de fuseau horaire soit entraîné par l'intermédiaire de deux pignons montés sur ladite bascule. Ledit pignon de fuseau horaire entraîne en prise avec un renvoi de fuseau horaire les rouages de l'affichage secondaire de manière à corriger l'heure du fuseau horaire par pas d'une heure selon le sens de rotation de la couronne de remontoir. La correction de l'heure du fuseau horaire indiquée dans l'affichage secondaire est donc facile et rapide.The object of the present invention is to overcome these disadvantages and the invention is characterized for this purpose by the fact that the secondary hour hand of the secondary display is adjustable in both directions, forward and backward, by no one hour independent of the primary display using the winding crown in its second position, positioning a rocker so that a timezone pinion is driven through two pinions mounted on said rocker. Said time zone gear causes the gearing of the secondary display to engage with a time zone deflection so as to correct the time of the time zone in steps of one hour according to the direction of rotation of the winding crown. The correction of the time zone time indicated in the secondary display is thus easy and fast.

D'autres avantages ressortent des caractéristiques exprimées dans les revendications dépendantes et de la description exposant ci-après l'invention plus en détail à l'aide de dessins, dont le fait qu'une forme d'exécution d'une montre selon l'invention est caractérisée par le fait que les rouages des deux affichages sont entraînés dans leur mouvement horaire par l'intermédiaire d'un pignon central entraînant un mobile de minuterie primaire et un mobile de minuterie secondaire transférant l'animation sur les rouages portant les aiguilles d'affichage. Ces rouages comprennent une roue des heures primaire et une roue des heures secondaire ainsi qu'un pignon des minutes primaire et un pignon des minutes secondaire. Le pignon central permet ainsi d'un part l'entraînement horaire des deux affichages et d'autre part la mise à l'heure synchrone des deux affichages lorsqu'il est entraîné par l'intermédiaire d'un mobile de mise à l'heure en prise avec le pignon primaire monté sur la bascule, lorsque celle-ci est dans sa troisième position. Par ces mesures, on obtient une conception moins compliquée et une précision de haute niveau du fait que le pignon central entraîne directement les deux affichages.Other advantages emerge from the features expressed in the dependent claims and from the following description describing the invention in more detail with the aid of drawings, the fact that an embodiment of a watch according to the The invention is characterized in that the workings of the two displays are driven in their clockwise movement by means of a central pinion driving a primary timer mobile and a secondary timer mobile transferring the animation to the workings carrying the needles d display. These wheels include a primary hour wheel and a secondary hour wheel as well as a primary minute gear and a secondary minute gear. The central gear thus allows both the time of the two displays and the synchronous time setting of the two displays when it is driven via a mobile time setting. engaged with the primary gear mounted on the rocker, when it is in its third position. By these measures, we obtain a less complicated design and high level accuracy because the center gear drives both displays directly.

D'ailleurs, il est avantageux que, dans une forme d'exécution d'une montre selon l'invention, l'aiguille des heures secondaire est reliée aux rouages de l'affichage secondaire par l'intermédiaire d'un embrayage élastique travaillant dans un plan et définissant douze positions stables pour l'aiguille des heures secondaire. Cet embrayage élastique comprend la roue des heures secondaire, une roue de fuseau horaire portant l'aiguille des heures secondaire, ainsi qu'une étoile comportant douze dents montée sur cette roue de fuseau horaire et un ressort monté sur la roue des heures secondaire de manière à ce que les dents de ladite étoile puissent passer sur ce ressort, lorsque la roue de fuseau horaire est entraînée par le renvoi de fuseau horaire pour décaler l'aiguille des heures secondaire par pas d'une heure par rapport à l'aiguille des heures primaire. Le fait que l'embrayage ne travaille que dans un plan est particulièrement intéressant concernant le peu d'espace nécessaire pour ce système ainsi que pour la simplicité de la conception.Moreover, it is advantageous that, in one embodiment of a watch according to the invention, the secondary hour hand is connected to the workings of the secondary display by means of an elastic clutch working in a plane and defining twelve stable positions for the secondary hour hand. This resilient clutch includes the secondary hour wheel, a time zone wheel carrying the secondary hour hand, and a star with twelve teeth mounted on this time zone wheel and a spring mounted on the secondary hour wheel. that the teeth of said star can pass on this spring, when the timezone wheel is driven by the time zone return to shift the secondary hour hand in steps of one hour relative to the hour hand primary. The fact that the clutch only works in one plane is particularly interesting for the limited space required for this system as well as for the simplicity of the design.

Il est encore possible de réaliser ce ressort de l'embrayage élastique par un ressort continu et fermé sur lui même présentant à son intérieur deux arcs destinés à coopérer avec deux encoches opposées de l'étoile solidaire de la roue de fuseau horaire. Le ressort comporte encore deux fentes traversées par deux goupilles distinctes solidaires de la roue des heures secondaire pour être entraîné par celle-ci. Ceci permet ainsi une rotation de la roue de fuseau horaire par rapport à la roue des heures secondaire en utilisant les douze positions stables prévues par les dents de l'étoile. Un embrayage travaillant dans un plan est ainsi réalisé d'une manière particulièrement simple.It is still possible to make this spring of the elastic clutch by a continuous spring and closed on itself having in its interior two arcs intended to cooperate with two opposite notches of the star integral with the time zone wheel. The spring further comprises two slots traversed by two separate pins integral with the secondary hours wheel to be driven by it. This allows rotation of the time zone wheel with respect to the secondary hour wheel using the twelve stable positions provided by the star teeth. A clutch working in a plane is thus achieved in a particularly simple manner.

Une montre selon l'invention peut encore être équipée d'un frein de forme allongée comportant une denture primaire et une denture secondaire à ses extrémités, monté de manière pivotante et commandé par la bascule. Un tel frein est destiné d'une part, lorsque la couronne de remontoir est dans sa deuxième position pour changer l'heure de l'affichage secondaire, à s'engrener par la denture secondaire dans la denture du pignon des minutes secondaire pour empêcher un mouvement de l'aiguille des minutes secondaire lorsque l'aiguille des heures secondaire du fuseau horaire est corrigée par saut d'une heure. D'autre part, ce frein est destiné, lorsque la couronne de remontoir est dans sa troisième position pour la mise à l'heure synchrone des deux affichages, à s'engrener par la denture primaire dans une planche montée à friction sur le pignon central pour empêcher un mouvement du rouage d'entraînement de base lors de cette mise à l'heure. Quand la montre est en marche normale ou quand on remonte la montre, lorsque la couronne de remontoir est dans sa première position, ce frein n'est en prise avec aucun rouage. Un frein de ce type permet ainsi de façon simple d'éviter toute sorte d'influence non désirée d'une opération sur un rouage à un autre rouage et de séparer les fonctions des différents rouages pendant la mise à l'heure ou la correction du fuseau horaire d'un part et la marche normale ou le remontage d'autre part.A watch according to the invention can also be equipped with an elongated brake having a primary toothing and a secondary toothing at its ends, mounted pivotally and controlled by the rocker. Such a brake is intended on the one hand, when the winding crown is in its second position to change the time of the secondary display, to mesh with the secondary toothing in the toothing of the secondary minute gear to prevent a movement of the secondary minute hand when the secondary hour hand of the time zone is corrected by one-hour jump. On the other hand, this brake is intended, when the winding crown is in its third position for setting the synchronous time of the two displays, to mesh with the primary teeth in a board frictionally mounted on the central gear. to prevent movement of the basic drive train during this time setting. When the watch is in normal operation or when the watch is up, when the winding crown is in its first position, this brake is not engaged with any cog. A brake of this type thus makes it possible in a simple way to avoid any kind of unwanted influence of an operation on a train to another wheel and to separate the functions of the various wheels during the time setting or correction of the wheel. time zone on the one hand and normal walking or winding on the other.

Ces caractéristiques permettent de rendre cette montre à double fuseau horaire très maniable, particulièrement en ce qui concerne l'utilisation de l'affichage secondaire indiquant le fuseau horaire choisi.These features make this dual timezone watch very manoeuvrable, particularly with respect to the use of the secondary display indicating the chosen time zone.

Il est bien évident qu'il existe d'autres formes d'exécution différentes, notamment concernant l'agencement de l'embrayage élastique définissant douze positions stables pour l'aiguille des heures secondaire et d'autres variantes des mécanismes techniques.It is obvious that there are other different embodiments, particularly concerning the arrangement of the elastic clutch defining twelve stable positions for the secondary hour hand and other variants of the technical mechanisms.

Les dessins annexés représentent, à titre d'exemple, une forme d'exécution de l'invention.The accompanying drawings represent, by way of example, an embodiment of the invention.

La figure 1 illustre schématiquement la montre côté cadran, notamment montrant les deux affichages.The figure 1 schematically illustrates the watch dial side, including showing the two displays.

La figure 2 est une vue schématique, en plan, du mécanisme selon l'invention, la bascule étant dans la position pour changer l'heure de l'affichage secondaire.The figure 2 is a schematic plan view of the mechanism according to the invention, the rocker being in the position to change the time of the secondary display.

La figure 3 est une vue schématique, en plan, du mécanisme selon l'invention, la bascule étant dans la position de mise à l'heure synchrone des deux affichages.The figure 3 is a schematic plan view of the mechanism according to the invention, the latch being in the synchronous setting position of the two displays.

La figure 4 est une vue schématique, en plan, du mécanisme selon l'invention, la bascule étant dans la position de remontage de la montre et de marche normale de la montre.The figure 4 is a schematic plan view of the mechanism according to the invention, the latch being in the winding position of the watch and the normal running of the watch.

La figure 5 représente une vue en coupe selon la ligne I - I de la figure 2.The figure 5 represents a sectional view along the line I - I of the figure 2 .

L'invention va maintenant être décrite en détail en référence aux dessins annexés. La montre représentée à la figure 1 comporte deux affichages analogiques non-concentriques, dont un comme affichage primaire 1 comportant une aiguille des heures primaire 2 et une aiguille des minutes primaire 3 destinée à indiquer l'heure locale et l'autre comme affichage secondaire 4 comportant une aiguille des heures secondaire 5 et une aiguille des minutes secondaire 6 destinée à indiquer l'heure d'un fuseau horaire quelconque.The invention will now be described in detail with reference to the accompanying drawings. The watch represented at figure 1 has two non-concentric analog displays, one as a primary display 1 having a primary hour hand 2 and a primary minute hand 3 for indicating the local time and the other as a secondary display 4 having a secondary hour hand 5 and a secondary minute hand 6 for indicating the time of any time zone.

La couronne de remontoir 7 de la montre est susceptible d'occuper trois positions axiales distinctes, une première position 7a de remontage de la montre, une deuxième position 7b destinée à la correction de fuseau horaire et une troisième position 7c de mise à l'heure synchrone des deux affichages, étant entendu notamment que les deux dernières fonctions sont destinées à s'effectuer dans les deux sens, en avant et en arrière.The winding crown 7 of the watch may occupy three distinct axial positions, a first winding position 7a of the watch, a second position 7b intended for time zone correction and a third position 7c for setting the time. synchronous two displays, being understood in particular that the last two functions are intended to be performed in both directions, forwards and backwards.

Le mécanisme d'entraînement d'après la figure 2 comprend deux aiguillages entraînés dans leur mouvement horaire par un pignon central 8 en prise avec deux mobiles de minuterie 9a et 9b transférant l'animation sur les rouages portant les aiguilles d'affichage.The drive mechanism according to the figure 2 comprises two switches driven in their clockwise movement by a central pinion 8 in engagement with two mobile timers 9a and 9b transferring the animation to the workings carrying the display hands.

En ce qui concerne l'affichage primaire 1 indiquant l'heure locale, la roue de minuterie primaire 9a entraîne la roue des heures primaire 10 portant l'aiguille des heures primaire 2 et le pignon des minutes primaire 11 portant l'aiguille des minutes primaire 3.With respect to the primary display 1 indicating the local time, the primary timer wheel 9a drives the primary hour wheel 10 carrying the primary hour hand 2 and the primary minute pinion 11 carrying the primary minute hand 3.

En ce qui concerne l'affichage secondaire 2 indiquant l'heure du fuseau horaire, la roue de minuterie secondaire 9b entraîne la roue des heures secondaire 12 reliée à l'aiguille des heures secondaire 5 par l'intermédiaire d'un embrayage élastique décrit ci-dessous et le pignon des minutes secondaire 13 portant l'aiguille des minutes secondaire 6 du fuseau horaire.With respect to the secondary display 2 indicating the time zone time, the secondary timer wheel 9b drives the secondary hour wheel 12 connected to the secondary hour hand 5 via a resilient clutch described herein. below and the secondary minute gear 13 carrying the secondary minute hand 6 of the time zone.

Ainsi, une haute précision est assurée, car les deux aiguilles des minutes sont entraînés par le même pignon central 8 et donc indéphasables. Cela est bien entendu identique pour les deux aiguilles des heures, sauf le fait que la roue des heures secondaire 12 ne porte pas de une manière fixe l'aiguille des heures secondaire 5.Thus, high precision is ensured because the two minute hands are driven by the same central pinion 8 and therefore indehasable. This is of course the same for the two hour hands, except that the secondary hour wheel 12 does not hold the secondary hour hand 5 in a fixed manner.

L'embrayage élastique, qui relie la roue des heures secondaire 12 à l'aiguille des heures secondaire 5, travaille dans un plan et définit douze positions stables pour l'aiguille des heures secondaire 5. Il comprend la roue des heures secondaire 12 et une roue de fuseau horaire 14 portant l'aiguille des heures secondaire 5. Il comporte aussi une étoile 16 avec douze dents montée sur cette roue de fuseau horaire 14 ainsi qu'un ressort 15 monté sur la roue des heures secondaire 12 de manière à ce que les dents de l'étoile 16 puissent passer sur ce ressort 15, lorsque la roue de fuseau horaire 14 est entraînée par le renvoi de fuseau horaire 17, pour décaler l'aiguille des heures secondaire 5 par pas d'une heure par rapport à l'aiguille des heures primaire 2.The elastic clutch, which connects the secondary hour wheel 12 to the secondary hour hand 5, operates in one plane and defines twelve stable positions for the secondary hour hand 5. It includes the secondary hour wheel 12 and a time zone wheel 14 carrying the secondary hour hand 5. It also comprises a star 16 with twelve teeth mounted on this time zone wheel 14 and a spring 15 mounted on the secondary hour wheel 12 so that the teeth of the star 16 can pass on this spring 15, when the time zone wheel 14 is driven by the time zone return 17, to shift the secondary hour hand 5 in steps of one hour relative to the Primary hour hand 2.

Le ressort 15 de l'embrayage élastique est un ressort continu et fermé sur lui même. Il présente d'une part à son intérieur deux arcs 15a destinés à coopérer avec deux encoches opposées 16a de l'étoile 16 solidaire de la roue de fuseau horaire 14. Il comporte d'autre part deux fentes traversées par deux goupilles 15b distinctes solidaires de la roue des heures secondaire 12, pour être entraîné par celle-ci. Cette configuration permet ainsi une rotation de la roue de fuseau horaire 14 par rapport à la roue des heures secondaire 12 en utilisant les douze positions stables prévues par les dents de l'étoile 16, sans nécessité d'un mouvement perpendiculaire au plan de la rotation, et évite la perte d'espace inutile. En exécutant cette rotation, il est donc possible de changer l'heure du fuseau horaire par pas d'une heure.The spring 15 of the elastic clutch is a continuous spring and closed on itself. It has on the one hand inside its two arches 15a intended to cooperate with two opposite notches 16a of the star 16 secured to the time zone wheel 14. It also comprises two slots traversed by two separate pins 15b integral with the secondary hour wheel 12, to be driven by it. This configuration thus allows rotation of the time zone wheel 14 with respect to the secondary hour wheel 12 by using the twelve stable positions provided by the teeth of the star 16, without the need for a movement perpendicular to the plane of the rotation. , and avoids the loss of unnecessary space. By executing this rotation, it is therefore possible to change the time of the time zone in steps of one hour.

Cela se fait dans la deuxième position 7b de la couronne de remontoir 7, où la bascule 20 amène le pignon secondaire 22 de la bascule 20 en prise avec le pignon de fuseau horaire 18 pour entraîner la roue de fuseau horaire 14 par l'intermédiaire du renvoi de fuseau horaire 17, ce qui fait passer les dents de l'étoile 16 enfichée sur la roue de fuseau horaire 14 sur les arcs 15a du ressort 15 permettant à la roue de fuseau horaire 14 d'occuper une autre des douze positions stables définies par l'étoile 16. Selon le sens de rotation de la couronne de remontoir 7, la correction du fuseau horaire est effectuée par conséquent dans les deux sens, en avant et en arrière.This is done in the second position 7b of the winding crown 7, where the rocker 20 causes the secondary gear 22 of the rocker 20 to engage with the time zone pinion 18 to drive the time zone wheel 14 via the time zone return 17, which causes the teeth of the star 16 inserted on the time zone wheel 14 to be passed over the arches 15a of the spring 15 enabling the timezone wheel 14 to occupy another of the twelve stable positions defined by the star 16. Depending on the direction of rotation of the winding crown 7, the correction of the time zone is therefore performed in both directions, forward and backward.

Dans la troisième position 7c de la couronne de remontoir 7, la bascule 20 amène le pignon primaire 21 de la bascule 20 en prise avec le mobile de mise à l'heure 19 pour entraîner le pignon central 8, ce qui permet une mise à l'heure synchrone des deux affichages.In the third position 7c of the winding crown 7, the rocker 20 brings the primary pinion 21 of the rocker 20 into engagement with the time setting wheel 19 to drive the central pinion 8, which allows a setting of synchronous time of the two displays.

La première position 7a de la couronne de remontoir 7 sert simplement au remontage de la montre de façon conventionnelle.The first position 7a of the winding crown 7 simply serves to reassemble the watch in a conventional manner.

Le frein 23 de forme allongée comportant une denture primaire 23a et une denture secondaire 23b à ses extrémités est monté de manière pivotante. Il est destiné à occuper trois différentes positions en fonction de la position de la bascule 20 et il est commandé par cette dernière. Lorsque la couronne de remontoir 7 est dans sa deuxième position 7b pour changer l'heure de l'affichage secondaire et la bascule 20 amène alors les deux pignons 21 et 22 en prise avec le pignon de fuseau horaire 18, ce frein 23 s'engrène par la denture secondaire 23b dans la denture du pignon des minutes secondaire 13 pour empêcher un mouvement de l'aiguille des minutes secondaire 6 lorsque l'aiguille des heures secondaire 5 du fuseau horaire est corrigée par saut d'une heure. Lorsque la couronne de remontoir 7 est dans sa troisième position 7c pour la mise à l'heure synchrone des deux affichages et la bascule 20 amène alors le pignon primaire 21 en prise avec le mobile de mise à l'heure 19, ce frein 23 s'engrène par la denture primaire 23a dans une planche 8a montée à friction sur le pignon central 8 pour empêcher un mouvement du rouage d'entraînement de base lors de cette mise à l'heure. Quand on remonte la montre ou quand la montre est en marche normale, alors lorsque la couronne de remontoir 7 est dans sa première position 7a et la bascule 20 n'est en prise ni avec le rouage de l'affichage primaire ni avec le rouage de l'affichage secondaire, le frein 23 n'est en prise avec aucun rouage.The elongated brake 23 having a primary toothing 23a and a secondary toothing 23b at its ends is pivotally mounted. It is intended to occupy three different positions depending on the position of the rocker 20 and it is controlled by the latter. When the winding crown 7 is in its second position 7b to change the time of the secondary display and the rocker 20 then brings the two pinions 21 and 22 into engagement with the time zone pinion 18, this brake 23 meshes by the secondary toothing 23b in the toothing of the secondary minute gear 13 to prevent a movement of the secondary minute hand 6 when the secondary hour hand 5 of the time zone is corrected by one-hour jump. When the winding crown 7 is in its third position 7c for the synchronous setting of the two displays and the rocker 20 then brings the primary pinion 21 into engagement with the time setting mobile 19, this brake 23 s meshes with the primary teeth 23a in a board 8a frictionally mounted on the central gear 8 to prevent movement of the basic drive train during this time setting. When the watch is raised or when the watch is in normal operation, then when the winding crown 7 is in its first position 7a and the rocker 20 is not in engagement with the gear of the primary display or with the wheel of the secondary display, the brake 23 is not engaged with any cog.

Claims (5)

  1. Mechanical timepiece having two nonconcentric analogue displays (1, 4), a primary display (1) indicating local time and a secondary display (4) indicating time of any one time zone, including a primary hour hand (2) and a primary minute hand (3), a secondary hour hand (5) and a secondary minute hand (6), and comprising a winding crown (7) intended to occupy three distinct axial positions, a first position (7a) for winding the timepiece, a second position (7) for changing the time of the secondary display, and a third position (7c) for synchronised setting of the two displays, characterised in that the secondary hour hand (5) of the secondary display (4) can be set in both directions, forward and back, in steps of one hour independently of the primary display (1), by using the winding crown (7) in its second position (7b), positioning a lever (20) in such a way that a time-zone pinion (18) is driven via two pinions (21, 22) mounted on said lever, said time-zone pinion (18) being meshed with an intermediate wheel (17) of the time zones driving the gear trains of the secondary display (4) so as to correct the time of the time zone in steps of one hour in the direction of rotation of the winding crown (7).
  2. Timepiece of claim 1, characterised in that in their time motion, the gear trains of the two displays (1, 4) are driven via a central pinion (8) driving a primary motion work (9a) and a secondary motion work (9b) that transfer the action to the gear trains holding the hands (2, 3, 5, 6) of the displays, these gear trains comprising a primary hours wheel (10) and a secondary hours wheel (12) as well as a primary minutes pinion (11) and a secondary minutes pinion (13), said central pinion (8) thus making possible, on the one hand the time drive of the two displays, and on the other hand the synchronised setting of the two displays while it is driven via a setting wheel (19) engaged with the primary pinion (21) mounted on lever (20), so long as this lever is in its third position.
  3. Timepiece according to claim 1 or 2, characterised in that the secondary hour hand (5) is linked to the gear trains of the secondary display (4) via an elastic coupling working in a plane and defining twelve stable positions for the secondary hour hand (5), this elastic coupling comprising the secondary hours wheel (12), a time-zone wheel (14) holding the secondary hour hand (5), as well as a star (16) with twelve teeth mounted on this time-zone wheel (14), and a spring (15) mounted on the secondary hours wheel (12) in such a way that the teeth of star (16) may pass over this spring (15) while the time-zone wheel (14) is driven by the intermediate time-zone wheel (17) in order to shift the secondary hour hand (5) in steps of one hour relative to the primary hour hand (2).
  4. Timepiece according to claim 3, characterised in that the elastically coupling spring (15) is realised as a continuous spring closed upon itself, that on the one hand exhibits two arcs (15a) inside that are intended to cooperate with two opposite tooth gaps (16a) of the star (16) that is integral with the time-zone wheel (14), and on the other hand includes two slots traversed by two separate pins (15b) integral with the secondary hours wheel (12) in order to be driven by this wheel, thus permitting rotation of the time-zone wheel (14) relative to the secondary hours wheel (12) while using the twelve stable positions provided by the teeth of said star (16).
  5. Timepiece according to one of the preceding claims, characterised in that it comprises a brake (23) of elongated shape including at its ends primary teeth (23a) and secondary teeth (23b), pivoted, controlled by lever (20), and on the one hand intended to mesh via its secondary teeth (23b) with the teeth of the secondary minutes pinion (13) so as to prevent a movement of the secondary minute hand (6) while the secondary hour hand (5) of the time zone is corrected in jumps of one hour, so long as the winding crown (7) is in its second position (7b), but on the other hand intended to mesh via its primary teeth (23a) with a plate (8a) friction-mounted on the central pinion (8) so as to prevent a movement of the gear train of the basic drive during synchronised setting of the two displays, so long as the winding crown (7) is in its third position (7c), while this brake (23) during normal running and during winding of the timepiece is not engaged with any of the gear trains, so long as the winding crown (7) is in its first position (7a).
EP01115549A 2001-06-28 2001-06-28 Timepiece with two time zones Expired - Lifetime EP1271268B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01115549A EP1271268B1 (en) 2001-06-28 2001-06-28 Timepiece with two time zones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01115549A EP1271268B1 (en) 2001-06-28 2001-06-28 Timepiece with two time zones

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EP1271268A1 EP1271268A1 (en) 2003-01-02
EP1271268B1 true EP1271268B1 (en) 2008-03-12

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH697109A5 (en) * 2004-12-03 2008-04-30 Louis Vuitton Malletier Sa electronic movement with two time zones, and wristwatch with such a movement.
EP1701226A1 (en) * 2005-03-11 2006-09-13 The British Masters SA Clockwork
EP3379342B1 (en) * 2017-03-22 2022-07-20 Officine Panerai AG Device comprising a quick-adjustment spring engaging with a mobile of a timepiece
CH716774B9 (en) * 2019-11-06 2023-06-30 Officine Panerai Ag Watchmaking coupling and indexing device.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH80252A (en) * 1918-05-27 1919-07-01 Longines Francillon & Co S A F Double dial watch
CH348365A (en) * 1958-08-15 1960-08-15 Montres Perret Et Berthoud Sa Watch
CH507544A (en) 1969-02-20 1970-08-31 Synchron S A Watch including an additional hour hand
CH673196GA3 (en) 1988-02-19 1990-02-28 Universal multi-region watch with second display - includes mechanism to allow adjustment of second hour hand with respect to main display

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