Patent ID: 8926168
Filing Date: 2015-01-06
Classification: G04B,Y10T

Abstract:
1. A timepiece barrel including a pivoting drum and comprising a toothing, coaxial to a barrel arbour in a direction of pivoting, said drum being arranged to confine at least one barrel spring, a first end of which is fixed or hooked to said drum or cooperates with said drum, and a second end of which is fixed or hooked to a core, which is coaxial to said barrel arbour and guided on said barrel arbour, said core being pivotally guided in a bore comprised in said drum, and including a first core limiting surface arranged to limit the axial travel of said core, in said pivoting direction, relative to an inner surface of said drum, and a second core stopping surface opposite said first core limiting surface and arranged to limit the axial travel of said core, in said pivoting direction, relative to an outer surface of said drum, said drum being arranged, on the one hand, imprisoned between said first core limiting surface and said second core stopping surface, which are in opposition to each other, and on the other hand, to pivot freely about said core, wherein said first core limiting surface and/or said second core stopping surface is formed by a rivet seam which projects radially relative to said bore of said drum.