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    • 7. 发明授权
    • Ball bearing for winding rockers in self-winding watch and clock movements
    • 滚珠轴承用于自动上弦手表和时钟运动
    • US2686397A
    • 1954-08-17
    • US9097249
    • 1949-05-02
    • ROULEMENTS A BILLES MINIATURES
    • ROBERT ANNEN
    • G04B31/012
    • G04B31/0123
    • 667,395. Watches. ANNEN, R., and ROULEMENTS A. BILLES MINIATURES SOC. ANON. April 29, 1949, No. 11522/49. Class 139. The rocking weight in a self-winding watch is supported on a ball bearing having at least three raceways. In the first example (Fig. 1), four raceways are provided, two on an inner ring or race 5 held on a pillar 6 1 by a screw 7, and the other two on relatively adjustable rings 2 and 3. The ring 2 is carried by the arm 1 of the winding weight and constitutes the first pinion of the winding train. The ring 3 is forced into the ring 2. In another example (Fig. 2, not shown), the ring 3 constitutes the first pinion of the winding train and is positioned below the ring 2. In another embodiment (Fig. 3), the two outer raceways are on separate rings 11, 12, both forced into a ring 10 set in the arm 1. The ring 10 constitutes the first pinion of the winding train. In another embodiment (Fig. 4, not shown), the lower outer ring 12 forms the said first pinion. In a further embodiment (Fig. 5), the outer raceways are on the one ring 14 and the inner raceways on separate rings 15, 16, forced on to a ring 17 held on a pillar 6 1 by a screw 7. One of the rings 15 or 16 may be integral with the ring 17.