Stop spring for actuating or fixing rotational position of gear of clock gear train - has spring arm with one end fixable at locally secured part and locking tooth at other free end moving inwards under preloading effect of arm to engage in gear tooth gap

摘要

The stop spring includes a spring arm (8), the free end of which is provided with a U shaped recess (3) in which the locking tooth (4) is inserted and held. One or both of its flanks are designed to be resistant to wear and with low friction. The recess (3) has positioning surfaces (5) or points (9,10), at which the locking tooth fits with corresp. positioning surfaces (13) or points. The base of the U recess (3) has a flat positioning surface (5) or positioning points arranged in a plane, at which the locking tooth (4) is mounted, with the positioning surface (13) or the positioning points designed at its side away from the tooth tip (12). ADVANTAGE - Stop spring ensures fault free function over longer working life. Locking tooth is mounted on spring arm in simple manner and exactly positioned.