Patent ID: 7823476

Claim:
A barrel winding device including: (a) a pinion mounted on a winding stem with an axis of rotation XX, the pinion including a first saw contrate toothing, wherein the pinion is mobile between a first time-setting position and a second winding position, and axially positioned in the second winding position by an elastic member; (b) a gear wheel having an axis of rotation YY perpendicular to the axis of rotation XX, the gear wheel including a saw inner toothing and a straight external toothing, wherein the saw inner toothing of the gear wheel meshes directly with the first saw contrate toothing of the pinion in the second winding position so as to form a single direction coupling device; and (c) a barrel on which a ratchet is mounted, wherein the straight external toothing of the gear wheel meshes at least indirectly with the ratchet in the second winding position.