Apparatus for assembling finger jointed lumber

Details Apparatus for assembling finger jointed lumber Apparatus for assembling finger jointed lumber

1974-10-15

1976-03-09

DiPalma, Victor A.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

144 3E, 156304, 156558, B23P 1900

Patent

active

039422330

ABSTRACT:
A pair of torque driven pneumatic tires serially feeds pre-assembled finger jointed boards, aligned end to end, along a path with sufficient force to overcome a drag force imparted to the boards at a point disposed in the longitudinal direction of travel. The drag force is produced by a retarding unit positioned downstream of the tires for engaging opposite surfaces of the boards passing therethrough with conforming bearing surfaces and producing uniform normal forces and friction thereupon. The boards along the path between the points of feed and drag are thus subjected to longitudinal compression facilitating complete interengagement in the finger joint.

REFERENCES:
patent: 2908600 (1959-10-01), Nicholson
patent: 3126308 (1964-03-01), Brockerman et al.
patent: 3179135 (1965-04-01), Windsor
patent: 3358721 (1967-12-01), Giesecke et al.
patent: 3388020 (1968-06-01), Gates
patent: 3790427 (1974-02-01), Marstrand

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