Cam action stacked lumber clamp

Details Cam action stacked lumber clamp Cam action stacked lumber clamp

1996-11-12

1999-08-10

Bray, W. Donald

Work holders

Relatively movable jaws

Means to actuate jaw

211 8, 211 491, 2481251, 269239, 269229, B25B 104

Patent

active

059346590

ABSTRACT:
A clamp (200) for clamping stacked lumber (72) to prevent twisting and bending of the lumber or theft is disclosed. A horizontal member (274) goes under the lumber and is attached to a vertical member (214) at the back. A pressure bar (206) hinged to the vertical member goes on top of the lumber. When the front of the pressure bar is lowered to the top of stack, an automatic lock (222) retains the rear of the pressure bar at a fixed position on the vertical member. A brace (204) between the front of the pressure bar and the vertical member holds the pressure bar in position. The effective length of the brace is increased by means of a lever operated cam (202) which places 2000 pounds of pressure on the front of the pressure bar to clamp the stack.

REFERENCES:
patent: 1488868 (1924-04-01), Crimmins
patent: 2247519 (1941-07-01), Pace
patent: 4416104 (1983-11-01), Yamada
patent: 5181681 (1993-01-01), Edwards

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