C-clamp with adjustable throat and a method of compressing a wor

Details C-clamp with adjustable throat and a method of compressing a wor C-clamp with adjustable throat and a method of compressing a wor

1994-09-07

1996-10-29

Watson, Robert C.

Work holders

Relatively movable jaws

With separate positioning means for each of jaw pair

269166, B25B 102

Patent

active

055689159

ABSTRACT:
The C-clamp (10) has an elongated structural member (12) and two clamp heads (14). Each clamp head (14) has a body (16) with an elongated structural member passage (22) having a central axis (24) and a jaw (18) connected to the body (16) by a screw (20). The passage (22) is defined by side plates (26 and 28), an upper friction block (30) and a lower friction block (32). The friction blocks (30 and 32) are axially spaced apart along the central axis (24). Contact surfaces (34 and 40) on the friction blocks (30 and 32) are spaced apart in a direction normal to the central axis (24) a distance less than the height of the structural member (12).

REFERENCES:
patent: 307439 (1884-11-01), Corbett
patent: 319517 (1885-06-01), Sheldon
patent: 404368 (1889-05-01), Stearns
patent: 655193 (1900-08-01), Carlson
patent: 775659 (1904-11-01), Jorgensen
patent: 881530 (1908-03-01), Barker
patent: 932516 (1909-08-01), Todd
patent: 1452164 (1923-04-01), Margelis
patent: 2656864 (1953-10-01), Hopfeld
patent: 4143869 (1979-03-01), Paterson et al.

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