| 摘要 |
PURPOSE:To make it possible to effect the hand-setting correction and the alarm- setting correction in both forward and reverse directions by providing a cam plate between a hour wheel and an alarm-setting wheel, and forming both ends of the additional hour can projections of the additional hour wheel into inclined planes. CONSTITUTION:Both the circumferential ends of additional hour cam projections 64 and 66 of the additional hour wheel 42 are formed into inclined surfaces as stranding surfaces. Accordingly, in both cases of the forward and reverse rotations of the additional hour wheel 42 in hand-setting and the forward and reverse rotations of the additional alarm-setting wheel 24, the additional hour cam projections 64 and 66 can run on additional alarm handsetting cam grooves 70 and 72 in both directions at will. In addition, by providing a cam plate 46 between a hour wheel 40 and an alarm-setting wheel 16, the hand-setting correction and the alarm-setting correction can be effected in both directions. |
