Workpiece retainer

Details Workpiece retainer Workpiece retainer

1980-09-19

1981-10-13

Watson, Robert C.

Work holders

Relatively movable jaws

Plural jaw pairs, angularly oriented, for common work

269130, 269244, 269266, B25B 124

Patent

active

042944430

ABSTRACT:
A clamping retention structure for rough stones to enable mechanical operations to be performed which includes spaced support bars on a common threaded shaft and a link chain anchored at each end on one bar and looped around the other bar. Stone engaging teeth in spaced relation on the chain are stabilized by cross slides so that turning the threaded shaft in one direction forces the bars apart and tightens the chain to force the teeth into tight engagement with the stone.

REFERENCES:
patent: 1966391 (1934-07-01), Hill
patent: 3224754 (1965-12-01), Graham
patent: 3593402 (1971-07-01), Mori
patent: 3664320 (1972-05-01), Allen et al.
patent: 4011979 (1977-03-01), Hagen et al.

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