Patent ID: 7347618
Filing Date: 2008-03-25
Classification: G04B

Abstract:
1. Automatic pawl winding mechanism for watch movements having a rotor ( 1 ) solidly attached to a rotor wheel ( 2 ) and oscillating about the axis of a rotor pivot ( 3 ), a pawl wheel ( 4 ) to which an oscillating motion of the rotor ( 1 ) is transmitted being attached rotatably about the axis of a pawl wheel shaft ( 7 ), at least one pawl ( 5 a , 5 b ) being attached eccentrically to the axis of the pawl wheel shaft ( 7 ), and an automatic wheel ( 11 ) cooperating with the pawl or pawls ( 5 a , 5 b ) in such a manner that the oscillating motion of the rotor wheel ( 2 ) is transformed into a unidirectional rotary motion of the automatic wheel ( 11 ) and that this rotary motion is transmitted to a ratchet wheel ( 13 ) via a transformation gear train ( 12 ), characterised in that the rotor ( 1 ) together with the gear train from the rotor ( 1 ) with its rotor wheel ( 2 ) to the pawl wheel ( 4 ) with the pawl or pawls ( 5 a , 5 b ) is mounted on an independent rotor bridge ( 9 ) while no other organ of the mechanism is mounted on this independent rotor bridge ( 9 ).