| 摘要 |
Shaft positioning apparatus including a ramp member in supporting relation to an interposer cam which, by moving from its original position in a direction substantially transverse to the axis of the shaft, lifts the shaft from contact with a step of a shaft-supporting and positioning stepped surface of the ramp member thereby allowing the ramp member to move so that a different step of the stepped surface supports and positions the shaft when the interposer cam is returned to its original position. The ramp member is moved by a pinion drive which engages a gear rack formed on a surface of the ramp member.
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