| 摘要 |
<p>PURPOSE:To simplify the mechanism and to reduce a load applied to a drive device, by the constitution that a latch nail lever can be turned unidirectionally to a temporary stop operating lever linked to a cam member via a drive plate with bearing. CONSTITUTION:A latch nail lever 29 which stops the operation temporarily in the reciprocating process of a temporary stop operating lever 17 is formed with a latch end 29a coupled with a latch projection 10b of a temporary stop operation lever 10 and a contact end 29b turned unifirectionally only, and a cam wheel 5 is turned once per one operation without stopping it on the way of one revolution and it is fitted rotatably to the lever 17 linked via a drive plate 8 for the operation of the wheel 5. Further, through the cooperation with the latch projection 10b of the lever 10, the lever 17 is slid once to one pushing operation of the lever 10 and the mechanism is simplified.</p> |
