| 摘要 |
The cord (30-33) is coupled directly to an oscillating lever (11) of the mechanism (10). The lever oscillatory amplitude is fixed. It carries a rocker (14) with hooks (15) to arrest lever oscillations temporarily using the holding device (20). The cord is coupled adjustably (F2) to one (40) of the return levers (40, 50), such that the distance (d) between the cord and the return lever pivotal axis (45) is variable. |
