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Pallet assembly for Swiss escapement of timepiece, has pallet-stones whose respective rest faces are oriented to form null drawing angle, and return spring acting as bistable spring in intermediate position of pallet
Pallet assembly for Swiss escapement of timepiece, has pallet-stones whose respective rest faces are oriented to form null drawing angle, and return spring acting as bistable spring in intermediate position of pallet
The assembly has a return spring (5) fixed on a pallet (3) and a frame. Positions of fixation points of ends of the spring are chosen such that the fixation points are located on a straight line passing via a swivel pin (3e) of the pallet for enabling the spring to act as a bistable spring in an intermediate position of the pallet. An input pallet-stone (3a) and an output pallet-stone (3b) respectively comprise rest faces that are oriented to form a null drawing angle.
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