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High power wrenching tool

Image Number 5 for United States Patent #4200011.

The high power wrenching tool includes a high-torque ratchet wrench, a reaction frame which supports the ratchet wrench, and a fluid actuator on the frame for actuating the wrench. The wrench comprises two parallel side plates. Each plate has at one end thereof a bore. A ratchet wheel and a cooperating pawl are operatively disposed between the plates. The ratchet wheel has a center slot and carries a plurality of angularly-spaced teeth. The frame has at one end a pair of transversely-spaced outer rings positioned adjacent to the ratchet wheel. A pair of hubs are removably securable to the opposite sides of the wheel and are rotatably mounted in the frame's outer rings. Each hub has a slot identical to the slot of the wheel and in register therewith. The reciprocating actuator is detachably coupled between the pawl arm and the other end of the frame.

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