Metal deforming – By relatively movable offset tool-faces – With tool motion in fixed path
Patent
1981-01-30
1983-09-13
Crosby, Gene
Metal deforming
By relatively movable offset tool-faces
With tool motion in fixed path
B21D 1104
Patent
active
044034962
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. The mandrel further defines an extension adapted for mounting thereof in a vise or the like. The handle connected to the mandrel is removably connected thereto as for removal when the mandrel is vise-mounted. The tube clamping structure includes a hook which is swingably mounted to the mandrel, and in the illustrated embodiment, is mounted between the mandrel and the mounting portion for mounting the mandrel handle and defining the vise-mounting structure.
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Crosby Gene
Imperial Clevite Inc.
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