| 摘要 |
<p>The microswitch is operated by a cam driven by a reduction gear from the shaft carrying the eccentric arm and the motor mounted on a flange plate sliding on horizontal guides so that the whole internal suspension assembly can be engaged/disengaged with loops on the tops of the tubes. The eccentric arm engages a lift roller in a guide piece sliding up and down between vertical brackets and connected via rods to a cross bar carrying the slider with its tube hooks which in the down position rest in a split guide channel. A timing relay resets the motor drive for the return stroke.</p> |
