| 摘要 |
A pump actuating mechanism which allows a sewing machine motor to be used for operating a pneumatic pump. The mechanism utilizes two oppositely arranged, single direction, overrunning clutches, one connected to the sewing machine drive and the other connected to a pump linkage. An electrical switch is used to reverse the direction of the motor rotation thereby disengaging the motor from the sewing machine drive and engaging the motor with the pump linkage.
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