| 摘要 |
A digital clock construction having a frame means carrying a rotatable shaft driven by a timer at a predetermined rate. A plurality of time indicating wheel means are rotatably mounted on the shaft. A first drive structure is carried by the shaft and is operatively associated with one of the wheel means for incrementally rotating the one wheel means relative to the shaft on a time basis as the shaft rotates. Other drive structure is operatively associated with the shaft and the remaining wheel means to tend to rotate the remaining wheel means as the shaft rotates. Latch structure is operatively associated with the one wheel means and the remaining wheel means for holding the remaining wheel means from rotating relative to the frame means except in a timed relation to the incremental movement of the one wheel means relative to the frame means. The latch structure and wheel means are so constructed and arranged that the latch structure will not unlatch the wheel means when the clock construction is jarred during at least part of the cycle of operation of the wheel means.
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