| 摘要 |
<p>The drive includes a pivotable transmission between the two reels (51,52) for driving the tape in the forward and reverse directions. When pivoted between two operating positions, the transmission engages the movable adjustment lever (5). The pivot lever (44) carries a pivot wheel (50) and is coupled to the intermediate wheel (41) by a friction clutch (45) in mesh with it. The adjustment lever has teeth (11) which can engage the pivot wheel, and its movement controls the rotation of an anchor lever (15) whose ends (17,18) restrain the pivot lever in the middle of its range.</p> |
