| 摘要 |
<p>The wind-on mechanism is for film having one perforation for each frame. It comprises a winding drive member, a gear for driving the winding spool, transmission gear between these two, and a sensor which engages in the holes to prevent film advance. The transmission gear comprises a first gear coacting with teeth of the drive member, and mounted on a first pivot lever connected to a second pivot lever which pivots about the shaft of the spool driving gear. A second gear meshing with the first gear and the spool driving gear is mounted on the senc pivot lever at the point of attachment of the first pivot lever.</p> |
