Work holders – Relatively movable jaws – Means to actuate jaw
Patent
1979-04-16
1981-01-13
Watson, Robert C.
Work holders
Relatively movable jaws
Means to actuate jaw
254199, B66F 1900
Patent
active
042445582
ABSTRACT:
A frame-positioning device for mounting and stretching canvas and like materials that must be stretch-mounted to a supporting stretcher-frame structure, generally comprising a four-sided wooden frame member, whereby the canvas is stapled thereto. The frame-positioning means includes a pair of stretcher bar holders which are arranged to be slidably received on the structural-beam member of a canvas-stretching-and-mounting apparatus, so as to be adjustable in vertical and horizontal planes along the beam to accommodate various sizes of frames.
REFERENCES:
patent: 4180246 (1979-12-01), Guy
Lojacono Francis X.
Watson Robert C.
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