Mechanism for selectively stopping the striking mechanisms of a timepiece according to the available drive torque

A timepiece comprising:

• a drive means;
• a movement;
• a mechanism for controlling a power reserve of said drive means which includes an output arbour whose angular position indicates said power reserve available in said drive means;
• a striking mechanism which includes at least one hammer and at least one gong and is controlled by a striking mechanism control mechanism, which includes a lever for locking said movement,
• wherein the timepiece includes, inserted between said output arbour and said locking lever, a selective stopping mechanism, for selectively stopping one or more strikes of said timepiece, according to a drive torque available in said drive means,
• wherein said selective stopping mechanism is arranged to manage said drive torque available in said drive means by limiting or not limiting one or more workings of said one or more strikes, according to said angular position of said output arbour, to control a mechanism for uncoupling all or part of said one or more workings of said one or more strikes available in said striking mechanism, via a transmission mechanism controlling an isolating wheel set, which is comprised in said selective stopping mechanism and arranged to control the position of said locking lever and further arranged to release or prevent the movement of a striking mechanism control rod linkage and/or to allow or prevent the strike of a hammer against a gong,
• wherein said selective stopping mechanism includes arranged to pivot with said output arbour, a cam, which cooperates with a feeler spindle comprised in said transmission mechanism for controlling, directly or indirectly, a movement of a rack, which controls a pivoting of an input stage of said isolating wheel set,
• wherein said isolating wheel set includes a striking mechanism stop cam and a striking mechanism stop wheel, superposed on each other and arranged to pivot about the same pivot axis, according to angular clearances that are limited in relation to each other, and acting against or by the action of elastic return means, and to control a movement of an output stage formed by a movement stop surprise-piece, and
• wherein a bearing surface and an operating area connected to each other are arranged to cooperate with said locking lever by respectively forming a stop member and a ramp for said locking lever.