Work holders – Relatively movable jaws – Means for direct manual adjustment of jaw
Patent
1993-06-07
1994-07-05
Watson, Robert C.
Work holders
Relatively movable jaws
Means for direct manual adjustment of jaw
269219, 269221, B25B 102
Patent
active
053260767
ABSTRACT:
A hand screw clamp includes first and second jaws and a pair of threaded rods, each having a handle for manual rotation. Two first couplers are mounted to the first jaw and coupled to the threaded rods, and two releasable couplers are mounted to the second jaw and coupled to the threaded rods. The releasable couplers each include a threaded portion engageable with the threaded rods and a slidable portion sized to accommodate sliding movement of the threaded rods. A push plate is movably mounted to the second jaw and engaged with both of the releasable couplers. This push plate is movable between a first position, in which both of the threaded portions are engaged with the rods and manual rotation of the handles moves the second jaw along the threaded rods, and a second position, in which both of the threaded portions are disengaged from the threaded rods and the threaded rods are free to slide past the slidable portions without rotation of the threaded rods.
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Photographs of "Drill Press Vise with Threaded Rod and Spring Biased Quarter Nut".
Beckmann Toby J.
Sorensen Joseph A.
Petersen Manufacturing Co. Inc.
Watson Robert C.
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