| 摘要 |
An adjustable gearing consists of a container (1), a lid (2), and a drive shaft (3), a lifting screw (5) fitted with an external thread and a cogwheel (7) with a locking component (9) connected to the said external thread by a corresponding internal thread. The cogwheel (7) and the locking component (9) are turnable and lockable relative to each other for adjustment of play in the threads. Twisting and locking the cogwheel (7) and the locking part (9) are effected by means of adjusting screws etc., placed at right angles to the locking component's (9) longitudinal axis.<IMAGE> |
