Locking puller device

A locking puller device comprising a plurality of pivotally mounted arm-like jaws pivotably mounted to a collar at their rearward ends, a sleeve fixed to said collar and projecting rearwardly, a threaded nut means threaded onto said sleeve, a cam ring forward of the collar surrounding the jaws, braces fixed to the cam ring and extending rearwardly, a ring rotatably mounted to the nut means, said braces having their rearward ends fixed to the ring, projecting lug means mounted to and supported only by the cam ring and projecting from the cam ring radially inward about the outer edge surfaces of the jaws, said jaws having under surfaces, said lug means projecting beneath the under surfaces of the jaws, said jaws having its outer and under surfaces tapered relative to the direction of the cam ring movement, to cause the jaws to move toward one another by engagement with the cam ring on the outer surfaces as the cam ring moves forward or spread apart by the engagement with the cam ring lug means on the under surfaces as the cam ring moves rearward, said cam ring is movable forward by the rotation of the nut means in one direction, with the nut means engaging against the ring to move the ring and as the ring moves, the brace moves thereby moving the ring forward and the cam ring engages the tapered outer surfaces of the jaws to cam the jaws toward one another, and by rotation of the nut means in the opposite direction the nut means engages against the ring which moves the ring which moves the brace which moves the cam ring and projecting lugs rearward, and the projecting lug means engages the under surfaces of the jaws to cam the jaws apart.