Work holders – Relatively movable jaws – Plural jaw pairs – angularly oriented – for common work
Patent
1987-03-30
1989-05-09
Watson, Robert C.
Work holders
Relatively movable jaws
Plural jaw pairs, angularly oriented, for common work
269 45, 269249, 269287, 269266, B25B 514
Patent
active
048282413
ABSTRACT:
This is an improvement on a C-type clamp. Its features are: on one end or both ends of a clamp body that has (1) multiple directioned connecting threaded holes; (2) attach many threaded bars that will be used to clamp a small cubic object which has several different surfaces; (3) a middle connecting bar that has several threaded bars can be jointed to two ends of a C-type clamp body which may expand outward or expand inward, enabling to clamp far aparted supporting points or to clamp object that has variety of crooked clamping points.
One step forward, both ends of a C-type clamp body has position adjustable receiving bars in a zigzag shape and one or several threaded bars can be inserted into it; or on one end or both two ends of a C-type clamp, several connecting bars are jointed together in a terrace shape which can be expanded like a fan and adjust the position of each connecting bar. These several threaded bars can clamp several points on the different vertical surfaces of a circle.
REFERENCES:
patent: 2251815 (1941-08-01), Abbratozzato
patent: 3423082 (1969-01-01), Reyner
patent: 4322064 (1982-03-01), Jarvis
patent: 4373980 (1983-02-01), Skolmierski et al.
Bloom Leonard
Watson Robert C.
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