Work holders – Relatively movable jaws – Clamp couple element with fastening means
Patent
1992-08-10
1994-01-04
Watson, Robert C.
Work holders
Relatively movable jaws
Clamp couple element with fastening means
269 94, 269238, B23Q 302
Patent
active
052753913
ABSTRACT:
A hold-down utilizing a round, interchangeable post having annular barb-like ridges or projections that engage a workbench top through round holes that may be located at substantially any desired positions in the bench top. The post threads into a hold-down body having, on one side of the post, a yoke within which a gooseneck-shaped hold-down arm pivots on a pin received in yoke arms or forks and, on the other side of the post, a screw pressure point and T-shaped slot for receiving the head of a clamping adjustment screw that is journaled through one end of the clamping arm. The other end of the clamping arm terminates in a foot with a rounded pad for exerting pressure against a workpiece.
REFERENCES:
patent: 27592 (1860-03-01), Cooper
patent: 162866 (1875-05-01), Squire
patent: 201407 (1878-03-01), Gordon
patent: 2877815 (1959-03-01), Fonken
patent: 2994236 (1961-08-01), McCormick
patent: 3380730 (1968-04-01), Carver
patent: 3850421 (1974-11-01), Orris
patent: 3993298 (1976-11-01), Marshall
patent: 4084803 (1978-04-01), Beekenkamp
patent: 4470586 (1984-09-01), Spencer
Record Bench Holdfast depicted on p. 93 of the Lee Valley Tools 1991/92 Catalog.
Bench Hold-Down depicted on p. 93 of the Lee Valley Tools 1991/92 Catalog.
Classic Hold-Down depicted on p. 93 of the Lee Valley Tools 1991/92 Catalog.
"C clamp" hold-down depicted in 1992 Wolfcraft work tables brochure.
Frank Timothy C.
Lacoste Gary W.
Lee Leonard G.
Lynn John S.
McLean Francis A.
Lee Valley Tools Ltd.
Watson Robert C.
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