| 摘要 |
A two-speed motion transmitting mechanism is disclosed in which an input shaft has an input sprocket and an overrunning clutch mounted thereon. The input sprocket is connected by a first endless chain to a sprocket mounted on a centrifugal clutch which, in turn, is mounted on an auxiliary shaft. A second chain connects a sprocket mounted on the auxiliary shaft to an output sprocket mounted on the overrunning clutch. Initially, the drive from the input shaft is effected through the first and second chain to the output sprocket. After a predetermined speed is reached, the drive from the input shaft is effected through the overrunning clutch to the output sprocket.
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