Patent ID: 7070320

Claim:
A mechanism for triggering a striking work fitted to a timepiece, the later including a strike train actuated by a barrel, wherein the trigger mechanism is arranged between a timer for counting down and displaying on a dial a predetermined time interval, and the strike train for making a striking work heard when the timer reaches an end of a countdown; further including a lever inserted between the timer and the strike train, the lever including a pivoting shaft and first and second portions located on either side of the shaft, the first portion being arranged to be actuated by the timer when the latter reaches the end of the countdown and the second portion being arranged to lock the strike train during the countdown and to unlock the strike train when the timer reaches the end of the countdown; wherein the timer includes a minute wheel on the shaft on which is mounted a set of hands displaying the time interval, the wheel carrying a plate provided with a beak, in that the first portion of the lever carries a leaf spring, one end of which is capable of being contacted by the beak of the plate to drive the lever in rotation, and wherein the second portion of the lever carries a locking stone co-operating with a notch made in a wheel set of the strike train to lock the latter during the countdown.