Patent ID: 8625395
Filing Date: 2014-01-07
Classification: G04B

Abstract:
1. A striking mechanism unit for a timepiece repeater striking mechanism, said unit including a drive plate with a pipe pivotally mounted about a pivot axis, said drive plate carrying a click including a hook provided with a beak returned towards said axis by a spring wherein said unit further includes a detent ratchet pivoting about said axis and carrying a pin which is in abutment, through a hole in said drive plate, on said click against said spring to operate said hook when said detent ratchet pivots, and said beak of said hook, depending on the position thereof, allows or prevents the pivoting of a pipe ratchet, comprised in a downstream stage, said pipe ratchet being mounted to pivot coaxially on said pipe and also to pivot integrally about said axis with a first hour ratchet, wherein said pivoting downstream stage further includes at least a second hour ratchet pivoting about said axis, the toothing of said second hour ratchet being inclined in the same direction as the toothing of said first hour ratchet.