A positioning mechanism for a toothed wheel mounted on a rotatable staff in a watch movement, the positioning mechanism including a positioning lever exhibiting a flat lateral edge configured to cooperate with at least one flat provided on the staff of the toothed wheel. The positioning lever includes a pivot arm mounted in a pivotable manner about a pivot pin provided in the watch movement, a positioning element exhibiting the flat lateral edge and mounted in an articulated manner on the pivot arm, and a mechanism adjusting and locking the position of the positioning element on the pivot arm in relation to the staff of the toothed wheel.

A zeroing device (200), including a first zeroing unit (71), which consists of a zeroing lever (12) having a zeroing lever arm (12a) and a zeroing lever latch (12b), wherein the zeroing lever latch (12b) has a first end (13) and a second end (14).

The zeroing device is characterized by a second zeroing unit (72) that is arranged at an offset to the first zeroing unit (71) in a Z coordinate direction (Z) and is in operative connection with the first zeroing unit (71). The second zeroing unit (72) may also include a pendulum rod (31), a hinge support (34), and a joint rod (35), wherein the pendulum rod (31) is rotatably attached to a cam (33) and to the joint rod (35) and wherein the joint rod (35) is rotatably attached to the hinge support (34) and rests against an eccentric (36) of the zeroing lever (12).

Disclosed is an assembly to equip a timepiece mechanism and including at least one elastic element and at least first and second timepiece components, the elastic element cooperating with the first and second timepiece components and the elastic element, in the rest position, urging the first and second components to displace one of the timepiece components relative to the other. The elastic element includes a first end cooperating with the first component, the first component and the first end of the elastic element being shaped so, in the service position, the torque exerted by the elastic element on the first component and the second component maintains the first end of the elastic element in abutment on the first component at at least three distinct first bearing points that eliminate at least two degrees of freedom of movement between the first end of the elastic element and the first component.

A timepiece movement includes: a barrel wheel; a ratchet wheel; a rotary weight; a transmission wheel that causes the ratchet wheel to rotate; a pawl lever that engages with the transmission wheel, is interlocked with the rotary weight, and performs forward/backward movement in directions of approaching and moving away from the transmission wheel; a base panel; and a wheel train bearing provided between the base panel and the rotary weight. The pawl lever and the transmission wheel are positioned between the base panel and the wheel train bearing. The transmission wheel is pivotally supported by the wheel train bearing. The wheel train bearing is provided with a release portion for releasing the pawl lever and the transmission wheel from engagement therebetween by moving the pawl lever.

A timepiece movement includes: a barrel wheel; a ratchet wheel; a rotary weight; a transmission wheel that causes the ratchet wheel to rotate; a pawl lever that engages with the transmission wheel, is interlocked with the rotary weight, and performs forward/backward movement in directions of approaching and moving away from the transmission wheel; a base panel; and a wheel train bearing provided between the base panel and the rotary weight. The pawl lever and the transmission wheel are positioned between the base panel and the wheel train bearing. The transmission wheel is pivotally supported by the wheel train bearing. The wheel train bearing is provided with a release portion for releasing the pawl lever and the transmission wheel from engagement therebetween by moving the pawl lever.

A positioning mechanism for a toothed wheel mounted on a rotatable staff in a watch movement, the positioning mechanism including a positioning lever exhibiting a flat lateral edge configured to cooperate with at least one flat provided on the staff of the toothed wheel. The positioning lever includes a pivot arm mounted in a pivotable manner about a pivot pin provided in the watch movement, a positioning element exhibiting the flat lateral edge and mounted in an articulated manner on the pivot arm, and a mechanism adjusting and locking the position of the positioning element on the pivot arm in relation to the staff of the toothed wheel.

System (10) including (i) a pawl device (110) for a first wheel (6) of a first part (301) of a drivetrain (300) for winding a mainspring (7); (ii) a clutch device (120) for engaging a second part (302) of a drivetrain (300) for winding the mainsprin (7) with the first part (301) of the drivetrain (300) for winding the mainspring (7); and (iii) a coupling device (130) for coupling the pawl device and the clutch device, particularly a device (130) for coupling the states of operation of the pawl device and of the clutch device.

System (10) including (i) a pawl device (110) for a first wheel (6) of a first part (301) of a drivetrain (300) for winding a mainspring (7); (ii) a clutch device (120) for engaging a second part (302) of a drivetrain (300) for winding the mainsprin (7) with the first part (301) of the drivetrain (300) for winding the mainspring (7); and (iii) a coupling device (130) for coupling the pawl device and the clutch device, particularly a device (130) for coupling the states of operation of the pawl device and of the clutch device.

A pawl system (1) for a wheel (2) of a drivetrain for winding a horology barrel (3), including (i) a pawl (10) having at least one tooth (1a) intended to collaborate with a toothset (2a) of the wheel (2); and (ii) an element (6) for activating and deactivating the pawl, which is arranged so that, when it is in a first configuration, the at least one tooth (1a) of the pawl collaborates with the toothset (2a) directly or indirectly, notably under the effect of a return force returning the at least one tooth (1a) of the pawl against the toothset (2a), and, when the activation and deactivation element is in a second configuration, the at least one tooth (1a) of the pawl does not collaborate with the toothset (2a) or a return force returning the at least one tooth (1a) of the pawl against the toothset (2a) is reduced.

A pawl system (1) for a wheel (2) of a drivetrain for winding a horology barrel (3), including (i) a pawl (10) having at least one tooth (1a) intended to collaborate with a toothset (2a) of the wheel (2); and (ii) an element (6) for activating and deactivating the pawl, which is arranged so that, when it is in a first configuration, the at least one tooth (1a) of the pawl collaborates with the toothset (2a) directly or indirectly, notably under the effect of a return force returning the at least one tooth (1a) of the pawl against the toothset (2a), and, when the activation and deactivation element is in a second configuration, the at least one tooth (1a) of the pawl does not collaborate with the toothset (2a) or a return force returning the at least one tooth (1a) of the pawl against the toothset (2a) is reduced.