Detent escapement for a timepiece

摘要

The blocking member ( 6 ) or detent member of the escapement carries a follower ( 20 ) which ends in a beak ( 21 ) which cooperates with a small roller ( 23 ) comprising a notch ( 22 ). When the locking pallet-stone ( 7 ) of the blocking member releases itself from the teeth of escapement wheel ( 2 ), the beak ( 21 ) penetrates in the notch ( 22 ). The return of the pallet-stone ( 7 ) in the locking position is caused by a rising flank ( 25 ) of said notch, said rising flank being inclined such that the beak ( 21 ) is forced to follow and climb over said flank when the small roller ( 23 ) rotates. The arrangement allows the escapement to resist to shocks and consequently to omit the return spring acting on the blocking member.