| 摘要 |
This transmission device for a cycle is perfected in order to obtain a more positive change in gear, particularly when changing the chain from one sprocket to a larger-diameter sprocket. To this end, the crests 6 of the teeth are tapered and a furrow 18 is defined between the opposite edges of the outer plates 11 and inner plates 13 in order to receive the crests of the teeth, in a transitory fashion during a chain-shifting operation. <IMAGE>
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