This claw opens and closes by turning the knurled knob. Tag says "Mechanics Engineering Company Jackson, Michigan, patent pending. All I can find on the company is their spark-plug socket wrench ca. 1943. Purpose of this claw? It is about 13" long. Big screw on top locks claw shaft from rotating. And, contrary to popular belief, I don't post anywhere near the number of unknown (to me) items I find. For example, the last three before this I decoded myself-A Rockwell T-200 brake slack adjuster, Greenlee conduit bender pins, and Cogsdill precision ID rollers.
Last edited: