| 摘要 |
Device for driving a programme mechanism comprising a transport ratchet which, by means of an eccentric cam, drives a drive wheel step by step and a stop ratchet which locks the drive wheel during the rearwards movement of the transport ratchet, characterised in that the stop ratchet 8 is coupled to the transport ratchet 2 in such a way that the transport ratchet 2 lowers the stop ratchet 8 onto the bottom 1' of a tooth of the drive wheel 1 after the forward movement of the transport ratchet 2 and before its rearwards movement. <IMAGE>
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