| 摘要 |
<p>The automatic slide projector has a gripper unit, for removing the slides one at a time from the slide magazine and returning them after projection so that they remain in the same sequence, the magazine being indexed forwards each time. A switch element is inserted in the magazine, after the last slide in the sequence, to initiate automatic rapid-reversal of the magazine. The switch element has a switch arm which acts on an eccentric cam relasing the gripper unit and the magazine indexing means and coupling the projector drive to the magazine indexing disc for reversal of the magazine.</p> |
