A display mechanism including a mechanism for fast correction of a position of a display wheel set, an intermediate wheel set ensuring synchronization with an automatic drive mechanism, and, inserted between the intermediate wheel set and the display wheel set, a safety lever driven by the display wheel set during periodic driving thereof, in a trajectory that interferes with a spatial volume of the intermediate wheel set, such that, when the intermediate wheel set is correctly synchronized, the trajectory of the lever does not interfere with the intermediate wheel set, and, when the intermediate wheel set is not correctly synchronized, the trajectory of the safety lever interferes with the intermediate wheel set, which the safety lever then drives in an opposite direction to a single direction of normal operation, to resynchronize the intermediate wheel set.

A display mechanism including a mechanism for fast correction of a position of a display wheel set, an intermediate wheel set ensuring synchronization with an automatic drive mechanism, and, inserted between the intermediate wheel set and the display wheel set, a safety lever driven by the display wheel set during periodic driving thereof, in a trajectory that interferes with a spatial volume of the intermediate wheel set, such that, when the intermediate wheel set is correctly synchronized, the trajectory of the lever does not interfere with the intermediate wheel set, and, when the intermediate wheel set is not correctly synchronized, the trajectory of the safety lever interferes with the intermediate wheel set, which the safety lever then drives in an opposite direction to a single direction of normal operation, to resynchronize the intermediate wheel set.

A timepiece movement including a first lever bearing a first drive wheel, a second lever bearing a second wheel for time setting, and a third lever bearing a date correction mechanism. The third lever is mounted to pivot on the second lever and arranged to move between a meshing position, in which the date correction mechanism cooperates with the date display mechanism, and a retraction position, in which the date correction mechanism is disconnected from the date display mechanism. The first and second levers are arranged to occupy at least one date correction position, in which the first drive wheel is kinematically connected to the date correction mechanism and is not kinematically connected to the second wheel for time setting, and a time setting position, in which the first drive wheel is kinematically connected to the second wheel for time setting and is not kinematically connected to the date correction mechanism, wherein the position of the second lever is modified by cooperation between the first lever and the second lever.

A timepiece movement including a first lever bearing a first drive wheel, a second lever bearing a second wheel for time setting, and a third lever bearing a date correction mechanism. The third lever is mounted to pivot on the second lever and arranged to move between a meshing position, in which the date correction mechanism cooperates with the date display mechanism, and a retraction position, in which the date correction mechanism is disconnected from the date display mechanism. The first and second levers are arranged to occupy at least one date correction position, in which the first drive wheel is kinematically connected to the date correction mechanism and is not kinematically connected to the second wheel for time setting, and a time setting position, in which the first drive wheel is kinematically connected to the second wheel for time setting and is not kinematically connected to the date correction mechanism, wherein the position of the second lever is modified by cooperation between the first lever and the second lever.

A timepiece movement including a first lever bearing a first drive wheel, a second lever bearing a second wheel for time setting, and a third lever bearing a date correction mechanism. The third lever is mounted to pivot on the second lever and arranged to move between a meshing position, in which the date correction mechanism cooperates with the date display mechanism, and a retraction position, in which the date correction mechanism is disconnected from the date display mechanism. The first and second levers are arranged to occupy at least one date correction position, in which the first drive wheel is kinematically connected to the date correction mechanism and is not kinematically connected to the second wheel for time setting, and a time setting position, in which the first drive wheel is kinematically connected to the second wheel for time setting and is not kinematically connected to the date correction mechanism, wherein the position of the second lever is modified by cooperation between the first lever and the second lever.

A display mechanism including a mechanism for fast correction of a position of a display wheel set, an intermediate wheel set ensuring synchronization with an automatic drive mechanism, and, inserted between the intermediate wheel set and the display wheel set, a safety lever driven by the display wheel set during periodic driving thereof, in a trajectory that interferes with a spatial volume of the intermediate wheel set, such that, when the intermediate wheel set is correctly synchronized, the trajectory of the lever does not interfere with the intermediate wheel set, and, when the intermediate wheel set is not correctly synchronized, the trajectory of the safety lever interferes with the intermediate wheel set, which the safety lever then drives in an opposite direction to a single direction of normal operation, to resynchronize the intermediate wheel set.

A display mechanism including a mechanism for fast correction of a position of a display wheel set, an intermediate wheel set ensuring synchronization with an automatic drive mechanism, and, inserted between the intermediate wheel set and the display wheel set, a safety lever driven by the display wheel set during periodic driving thereof, in a trajectory that interferes with a spatial volume of the intermediate wheel set, such that, when the intermediate wheel set is correctly synchronized, the trajectory of the lever does not interfere with the intermediate wheel set, and, when the intermediate wheel set is not correctly synchronized, the trajectory of the safety lever interferes with the intermediate wheel set, which the safety lever then drives in an opposite direction to a single direction of normal operation, to resynchronize the intermediate wheel set.

The invention relates to a device for the display of periods which, in succession, form an annual cycle, for a timepiece movement, comprising an indicator member for indicating said periods. It comprises at least a mechanism for controlling the duration of display of said periods including at least: a drive member for driving the indicator member arranged to drive the indicator member at the moment of a change in period, a cam controlling the duration of display of said periods, and means for driving the cam, a first differential gear with two inputs and one output, a first input being formed by a reference drive wheel, arranged to complete one revolution in one reference period, a second input being formed by an actuation member arranged to cooperate with said cam, and the output being formed by said drive member for the indicator member,
said cam comprising a profile arranged such that the actuation member cooperates with the first differential gear to move the drive member for the indicator member forwards or backwards, depending on the duration of the period displayed relative to the reference period.

Timepiece movement including a date display drive device formed of a display disc including a toothing, said drive device including driving means and a drive source. The driving means includes a wheel set including pins, having a toothed wheel and a pinion including pins, and an engaging wheel engaging said toothed wheel. The pinion with pins includes a pair of pins configured to be positioned on either side of any tooth of the toothing. The toothed wheel of the pin wheel and the engaging wheel respectively have complementary non-circular profiles. When the two pins are oriented in a tangential direction to the toothing, these two wheels have a first gear ratio that is lower than a second gear ratio between them when the two pins are in perpendicular alignment to said tangential direction.

The timepiece control device (100) for a timepiece movement (200) has a frame (99), a control stem (1) having an axis (A1), a first pinion (4) that can be actuated in rotation by the control stem (1) and is adapted to be connected to at least one first mechanism (80, 70), in particular at least one first mechanism (80, 70) for correction of an indicator member, and a second pinion (6) that can be actuated in rotation by the control stem (1) and is adapted to be moved axially both relative to the control stem (1) and relative to the frame (99) and to be connected to a second mechanism (90), in particular a winding mechanism (90).