Metal deforming – By relatively movable offset tool-faces – With tool motion in fixed path
Patent
1981-01-30
1983-04-12
Crosby, Gene
Metal deforming
By relatively movable offset tool-faces
With tool motion in fixed path
B21D 905
Patent
active
043794009
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 retain the tube against such movement. Movement of the forming member about the bending axis is effected by manipulation of a pair of handles. The mandrel defines an extension adapted for adjustably mounting the tube holding hook to further define structure for adjusting the disposition of the tube to be bent to be accurately tangential to the bending groove at a bend start position thereof.
REFERENCES:
patent: 1324670 (1919-12-01), Hawes
patent: 2455138 (1948-11-01), Perkins
patent: 2719561 (1955-10-01), Bizak
patent: 2796785 (1957-06-01), Philippe
patent: 2887917 (1959-05-01), Kowal
patent: 2986195 (1961-05-01), Landis
patent: 3750447 (1973-08-01), Kowal
patent: 3789640 (1974-02-01), Frank
patent: 3926028 (1975-12-01), Kowal
Crosby Gene
Imperial Clevite Inc.
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