| 摘要 |
A power transmission mechanism includes a cluster gear formed integrally with, or fixed to an input shaft, and an output shaft arranged parallel to the input shaft and rotatably supporting gears in continuous meshing engagement with pinions of the cluster gear. A control bar, coaxial with the output shaft, defines a axial slot interconnected with radial slots on the output shaft. Locking bolts located in the radial slots and guided by a track, alternately move radially into and out of engagement with the selected gear.
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