Timepiece barrel

摘要

A ratchet for winding a barrel, including an axial passage for fitting the ratchet onto an arbor carrying pivotal drive mechanism. The ratchet includes, in the axial passage, a strip spring permitting fitting of the ratchet onto the arbor, and exerting a bearing force on the pivotal drive mechanism, wherein the at least one strip spring forms a complementary drive for pivotally driving the arbor. A timepiece barrel for pivotal assembly between a bottom plate and a bridge includes a spring housed between a pivoting drum and a ratchet and hooked between, at an outer end thereof, the drum, and at an inner end thereof, an arbor, the arbor pivoting integrally with the ratchet about a pivot axis.

主权项

1. A timepiece arbor-ratchet assembly, comprising:
an arbor and a ratchet for winding a timepiece barrel, the ratchet including an axial passage for fitting the ratchet onto the arbor including a protruding or recessed pivotal drive means, wherein the ratchet includes, in the axial passage, at least one strip spring permitting fitting of the ratchet on the arbor and arranged to exert a bearing force on the pivotal drive means, wherein the at least one strip spring forms complementary drive means for pivotally driving the arbor.