Abstract: Calendar mechanism comprising a day program wheel 13 that is driven by a clock movement and actuates a wheel train for display of the days of the month (16-24). The day program wheel 13 comprises a day indexing gear 13? that is advanced by one step each day by said clock movement, and at least one retractable tooth (128, 129, 130) capable of being driven by the clock movement and mounted to pivot between an active position (128A, 129A, 130A), in which it is driven, and an inactive position (128I, 129I, 130I), in which it is not driven by the clock movement.

Abstract: Gear wheel for a clock mechanism, including a toothed gear provided with a homogeneous integral peripheral tooth system with at most 16 teeth in a first meshing level; a first meshing sector that is rotationally fixed with the toothed gear and meshes in a second meshing level, wherein the first meshing level is superposed on a first tooth of the toothed gear; a second meshing sector that is rotationally fixed with the toothed gear and meshes in a third meshing level, wherein the second meshing level is superposed on a second tooth of the toothed gear; a third meshing sector that is rotationally fixed with the toothed gear and meshes in a fourth meshing level, wherein the third meshing level is superposed on a third tooth of the toothed gear.

Abstract: The analogue display watch includes two separate time displays (40, 44) for first and second time zones, and a time zone indicator (50), which includes a place ring (53) associated with two apertures (51, 52) shifted angularly by 1/24th of a revolution, and one of which is used in combination with winter time and the other with daylight saving time (DST). A first, manual, time-setting device (31) can simultaneously set the time of the first and second time displays (40, 44). A second, manual, time-setting device can rotate the second time display (44) and the time zone indicator (50) together, step-by-step, without changing the state of the first time display (40). A manual corrector (34, 63) rotates the place ring (53) step-by-step without changing the state of the first and second time displays (40, 44).

Abstract: Assembly for securing the outer end of the balance-spring (1) of a sprung balance device for a timepiece that includes a balance-spring stud holder (2) for housing a balance-spring stud (10), against which the balance-spring (1) can be locked, a screw (11) for locking the stud, for securing the balance-spring (1) by insertion between the stud (10) and a back face (7), the locking screw (11) including a tip (15) in the extension of the threaded body (12) at the opposite end to the screw head, and the stud (10) including a housing (16) in which the tip (15) can be inserted. The corresponding watch and method of securing the outer end of the balance-spring are also provided.

Abstract: Assembly for securing the outer end of the balance-spring (1) of a sprung balance device for a timepiece that includes a balance-spring stud holder (2) for housing a balance-spring stud (10), against which the balance-spring (1) can be locked, a screw (11) for locking the stud, for securing the balance-spring (1) by insertion between the stud (10) and a back face (7), the locking screw (11) including a tip (15) in the extension of the threaded body (12) at the opposite end to the screw head, and the stud (10) including a housing (16) in which the tip (15) can be inserted. The corresponding watch and method of securing the outer end of the balance-spring are also provided.

Abstract: The analogue display watch includes two separate time displays (40, 44) for first and second time zones, and a time zone indicator (50), which includes a place ring (53) associated with two apertures (51, 52) shifted angularly by 1/24th of a revolution, and one of which is used in combination with winter time and the other with daylight saving time (DST). A first, manual, time-setting device (31) can simultaneously set the time of the first and second time displays (40, 44). A second, manual, time-setting device can rotate the second time display (44) and the time zone indicator (50) together, step-by-step, without changing the state of the first time display (40). A manual corrector (34, 63) rotates the place ring (53) step-by-step without changing the state of the first and second time displays (40, 44).

Abstract: A calendar date display comprises a ten-day indicator (2) and a unit indicator (1) driven by a program drive (8), which is provided with a calendar date display (9) whose toothing is engaged with the beak (15) of a lever (16) in such a way that a wheel is moved one step forward by one date number change. Between each calendar number change, the beak (15) is engaged between the first and second teeth (11, 12) of the wheel (9). At the time of the calendar number change, the beak (15) is disengaged from said first and second teeth (11, 12) in such a way that it is engaged between the second and third (12, 13) teeth of the wheel (9), thereby moving said wheel one step forward.

Abstract: The invention concerns a sound generator mechanism including a control member (10) and a mechanism (14) for locking/unlocking the control member (10), the control member (10) being able to move between a first position in which the control member is held by the locking/unlocking member (14) and in which it holds the vibrating member (12) away from the rest position thereof, and a second position wherein the control member is released by the locking/unlocking mechanism (14) and wherein it simultaneously releases the vibrating member (12), which starts to vibrate and to produce a sound.

Abstract: A calendar date display comprises a ten-day indicator (2) and a unit indicator (1) driven by a program drive (8), which is provided with a calendar date display (9) whose toothing is engaged with the beak (15) of a lever (16) in such a way that a wheel is moved one step forward by one date number change. Between each calendar number change, the beak (15) is engaged between the first and second teeth (11, 12) of the wheel (9). At the time of the calendar number change, the beak (15) is disengaged from said first and second teeth (11, 12) in such a way that it is engaged between the second and third (12, 13) teeth of the wheel (9), thereby moving said wheel one step forward.

Abstract: The bracelet is formed of a plurality of links (4, 5) assembled in an articulated manner by means of pins (8). Each pins passes through the interlocking parts of links in which a cylindrical passage is arranged where a pin can slide relatively freely. In order to ensure the position of the pin once the links have been assembled, a locking element (12) is arranged in a cavity (18) made in one of the links so as to partially intersect the passage in which the pin is arranged. This pin includes a groove (22) which an external part (35) of the locking element penetrates when the element is in the closed position. Pressing on the locking element then rotating it through an angle of 90° releases the external part of the pin groove such that the pin is then released. The pin locking device thus allows the links to be assembled in a reversible manner and the length of the bracelet to be varied by adding or removing at least one link.