Patent ID: 8672310

Claim:
A device designed to firmly hold and grip a work piece formed with an integral protuberance comprising: a work holder formed with at least one bore and a dovetail slot; said dovetail slot having a bottom surface, a slanted side that forms a dovetail and an opposite side; said opposite side formed with at least one threaded opening; each bore having a terminal shoulder; a hook clamp including a housing having a tubular stem extending into the bore and an enlarged head outside the bore and a screw having a threaded shank; said threaded shank adapted to engage with the threaded opening in said work holder; said hook clamp including a recess to provide a corresponding shoulder which faces said terminal shoulder; a spring fitted about said shank and respectively abuts at its ends against terminal shoulder and the corresponding shoulder; and an extension extending from said enlarged head and including a second surface which is adapted to engage said workpiece protuberance.