Wall racking tool

Metal working – Means to assemble or disassemble – Means comprising hand manipulatable tool

Patent

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Details

B23Q 100

Patent

active

048707414

ABSTRACT:
A wall racking tool for enabling a single individual to align and plumb walls in framing construction utilizes a clamp for securement to a sill plate of an erected frame wall. A first pulley attached to the clamp body is connected to a second pulley by a rope. A jam cleat on the second pulley secures the rope in tension. The second pulley is attached to a top rail of a second erected wall. The second wall is aligned and plumbed by tensioning the rope. The clamp has a pair of parallel right angle channel side rails connected by a cross bar. Opposite ends of the cross bar are connected to the side rails for pivotal and limited longitudinal sliding movement. An axially fixed threaded rod is received for rotation within a journal bore formed through the cross bar. A traverse plate has a threaded bore engaging the threaded rod. Two pairs of levers extend from a top surface of each of the side rails. Four pivotal links secure the levers to end faces of the traverse plate. Rotation of a handle on the threaded rod causes linear movement of the traverse plate, moving the side rails into clamping engagement with the sill plate of a frame wall. The pivotal links and levers provide inward and downward clamping force components to each of the side rails.

REFERENCES:
patent: 460883 (1891-10-01), Nugent
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patent: 3357464 (1967-12-01), Vroman
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patent: 3402455 (1968-09-01), Converse
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patent: 3905486 (1975-09-01), Genson
patent: 4262410 (1981-04-01), Roberts
patent: 4281868 (1981-08-01), Lovitt
patent: 4303269 (1981-12-01), Faughnam
patent: 4416104 (1983-11-01), Yamada
patent: 4500078 (1985-02-01), Brennan

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