Abstract: An escapement mechanism including a stop member between a resonator and two escape wheel sets each subjected to a torque, and each including a magnetized or ferromagnetic track over a period. The stop member includes at least one magnetized or ferromagnetic pole shoe, transversely movable with respect to travel of a surface of the track. The pole shoe or the track creates a magnetic field between the pole shoe and the surface, and the pole shoe is confronted by a magnetic field barrier on the track just before each transverse motion of the stop member actuated by the period action of the resonator. The escape wheel sets are each arranged to cooperate alternately with the stop member, and are connected to each other by a direct kinematic connection.

Abstract: A method for manufacturing a composite compensating balance spring is provided, the method including providing a first wafer made of a first material; providing at least one second wafer made of at least one second material having Young's modulus variations with temperature that are of opposite sign as those of the first material; joining the first wafer to the at least one second wafer to form a substrate; etching a pattern through the substrate to form a composite compensating balance spring including a first thickness of the first material and at least a second thickness of the at least one second material; and releasing the composite compensating balance spring from the substrate.