Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent
1979-05-04
1981-09-15
Staab, Lawrence J.
Machine element or mechanism
Mechanical movements
Rotary to or from reciprocating or oscillating
173121, 173123, F16H 2512, F16H 2516
Patent
active
042890411
ABSTRACT:
A device for driving a tool with a reciprocating motion utilizing a rotary electric or pneumatic hand drill as a power source. The device includes a main shaft adapted to be held in a three-jaw chuck of a hand drill and having a concentric sleeve-like rear eccentric attached thereto. The shaft is arranged to rotate in a bearing in a handle frame. A forward sleeve-like eccentric is disposed on the forward end of the main shaft and adapted to slide forward and backward on the main shaft, and on a guide rod parallel to the main shaft, having a compression spring and attached to the handle frame. The front end of the forward eccentric is internally threaded to accept a tool-holding chuck. In operation, the main shaft is attached to a power hand drill which rotates the shaft. The rear eccentric rotates against the forward eccentric causing it to reciprocate and drive a tool held in a front chuck.
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