Coupling mechanism for a chronographe

摘要

A spring loaded (9) control lever (10) is actuated by an internal toothed surface (2) and is in contact with a short arm of an L shaped clutch spring (20). The long arm of the spring is shaped as a fork (22) which separates a clutch wheel (17) and seconds wheel (19) normally in friction contact under spring pressure. Tenons (32a,32b) and an eccentric screw (38) allow adjustment of the distance between the short arm and the control lever