| 摘要 |
A multiple-speed winch having a plurality of independently rotatable pinions coaxial with a drive shaft, drive linkages of varying mechanical advantage connecting these pinions to the winch drum and a shaft engager for engaging a selected pinion to the drive shaft. The shaft engager includes drive cams associated with the pinions and mounted for movement between an extended position which prevents relative rotation of pinion and shaft and a retracted position which permits rotation; selective extension of the drive cams causes the shaft to drive selected pinions.
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