Work holders – Relatively movable jaws – Three coacting work grippers
Patent
1977-07-01
1978-04-11
Watson, Robert C.
Work holders
Relatively movable jaws
Three coacting work grippers
269239, 269279, B25B 120
Patent
active
040835472
ABSTRACT:
A vise which is constructed of three jaws which are movable to be clamped upon an exterior object, two of the jaws moving in synchronism in respect to another jaw located in a specific position. The movable jaw assemblies are located in an overlapping crossed arrangement. The configuration of the jaws can be altered to grasp not only objects of regular shape, but also objects of irregular shape.
REFERENCES:
patent: 225000 (1889-03-01), Dickson
patent: 1515286 (1924-11-01), Svebilius
patent: 1586314 (1926-05-01), Kiefer
patent: 1761366 (1930-06-01), Reutter
patent: 2422773 (1947-06-01), Colwill
patent: 2610661 (1952-09-01), Romine
patent: 2634639 (1953-04-01), Sowell
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