Power torque wrench

A torque wrench comprising an elongate lever arm with front and rear ends, a hand grip at the rear end of the arm, a ratchet head pivotally connected with and projecting forward from the front end of the arm and selectively pivotally shiftable laterally relative thereto, said head including a body, a spindle rotatably carried by the body on an axis parallel to the pivotal axis of the head and normal to the longitudinal axis of the arm, ratchet means between the body and spindle establishing driving engagement therebetween upon rotation of the arm and body in a predetermined direction about the axis of the spindle and a work engaging projection in axial alignment with and projecting from the spindle and laterally relative to the axis of the arm, said wrench including means in and related to the arm and the head responsive to the torsional forces at said projection resolved from manually applied forces on the hand grip, whereby said torsional forces applied by the wrench can be controlled and result in lateral pivotal shifting of the head relative to the arm, a drive motor fixedly carried by the arm remote from the spindle, a transmission connected with and between the motor and the spindle and manually operable control means for the motor to selectively set the motor in operation, said motor and transmission operable to selectively rotate the spindle and projection relative to the body in the direction of driving rotation afforded by said ratchet means whereby the spindle and projection are drivingly rotated without rotation of said arm, said transmission including means to afford pivotal lateral shifting of the head relative to the motor and the arm.