Tube bender construction

Details Tube bender construction Tube bender construction

1981-01-30

1983-06-28

Crosby, Gene

Metal deforming

By relatively movable offset tool-faces

With tool motion in fixed path

72 36, B21D 702

Patent

active

043898726

ABSTRACT:
A tube bender construction for manual operation in bending a tube. The tube bender includes a mandrel defining a bending groove into which the tube is urged by a forming member mounted to the mandrel to swing about a bending axis of the bending groove. The tube to be bent is held against longitudinal movement during the bending operation by tube-holding structure arranged to clamp the tube against an extended groove portion of the mandrel. Movement of the forming member about the bending axis is effected by manipulation of a pair of handles which are arranged in offset manner to permit crossover of the handles and avoid interference between the user's hands thereon in the tube bending operation.

REFERENCES:
patent: 1889239 (1932-11-01), Crowley
patent: 2796785 (1957-06-01), Philippe
patent: 2887917 (1959-05-01), Kowal
patent: 2955495 (1960-10-01), Stirling
patent: 3194038 (1965-07-01), Small
patent: 3236082 (1966-02-01), Beck
patent: 3433042 (1969-03-01), Crihfield
patent: 3750447 (1973-08-01), Kowal
patent: 3926028 (1975-12-01), Kowal

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