Patent ID: 8374057

Claim:
A timepiece with minute repeater, comprising an hour rack , a positive-return link between this rack and one end of a driving spring, a manual tensioning lever fixed to the hour rack, an hour-striking cam to limit the degree of tensioning of the driving spring to the number of hours to be struck, a quarter rack, a driving link between the hour rack and the quarter rack, a quarter-striking cam to limit the movement of the quarter rack to the number of quarters to be struck, a minute rack, a driving link between the quarter rack and the minute rack, a minute-striking cam to limit the movement of the minute rack to the number of minutes to be struck, two striking hammers, each connected to a gong, sets of teeth and pallets for selectively activating each of the two striking hammers depending on the time indication to be struck; in which timepiece the hour racks, quarter racks and minute racks pivot about a common pin, the hour racks and quarter racks on the one hand, and the quarter racks and minute racks on the other being connected by a unidirectional driving link comprising a click, a set of ratchet teeth for engaging with the click, a stop and a cam for selectively engaging the click, with the set of teeth, and in that said end of the drive spring is kinematically fixed to two separate sets of teeth for activating a first striking pallet, the first set of teeth for striking the hours and the second set of teeth for striking the quarters and the minutes and a set of ratchet teeth fixed to the quarter rack to engage with a pallet for activating the second hammer in alternation with the first hammer for striking the quarters.