Clamping head assembly

Details Clamping head assembly Clamping head assembly

1992-07-01

1993-12-14

Watson, Robert C.

Work holders

Plural holders to hold workpieces relative to each other

Workpieces normal to each other

269233, B25B 120

Patent

active

052695026

ABSTRACT:
A clamping head assembly for clamping frame members in an underpinning machine includes a pair of clamping members each of which has upper and lower elements spring biased apart. The lower element carries a friction pad and is connected by a pin and slot connection or a parallelogram linkage to the upper element. Downward pressure on the clamping members causes slight longitudinal movement of the friction pad tending to pinch together the frame members at a mitre joint where they are held, for example, for underpinning.

REFERENCES:
patent: 1206399 (1916-11-01), Bartlett
patent: 1457307 (1923-06-01), Kerns
patent: 3944200 (1976-03-01), Huntley
patent: 4411415 (1983-10-01), Denaro
patent: 4572420 (1986-02-01), Pistorius

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