Adjustable clamp

Details Adjustable clamp Adjustable clamp

1985-04-11

1986-12-09

Watson, Robert C.

Work holders

Relatively movable jaws

Means for direct manual adjustment of jaw

269249, B25B 102

Patent

active

046276041

ABSTRACT:
A multi-element C-clamp has a workpiece gripping surface at a gripping arm on one end piece, and a rotatably advanceable gripping element supported from a cooperating gripping arm of a second end piece. A spring biased locking lever locks the end pieces in predetermined juxtaposition with respect to one another, with one non-gripping arm of one end piece inserted into a corresponding non-gripping hollow arm of the other end piece. Further increase in the gripping span of the C-clamp is obtained by interposing one or more lockable hollow extension pieces, nesting within one another intermediate the two end pieces, such that the C-clamp can be reduced to a compact unit when not in extended form for use. Slideable security latches are provided in the locking levers to ensure against accidental disengagement of extension or end pieces during use.

REFERENCES:
patent: 189767 (1877-04-01), Mole
patent: 623685 (1899-04-01), Noonan
patent: 985028 (1911-02-01), Green
patent: 2323654 (1943-07-01), Gordy et al.
patent: 3403901 (1968-10-01), Servadio
patent: 3934316 (1976-01-01), Driscoll
patent: 4505624 (1985-03-01), Kelly

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