Drive bar attachment for threading machines

B - Operations – Transporting – 23 – G

Patent

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10/26

B23G 1/44 (2006.01) B23B 31/12 (2006.01) B23G 1/22 (2006.01)

Patent

CA 1306327

DRIVE BAR ATTACHMENT FOR THREADING MACHINES Abstract of the Disclosure An attachment is disclosed for use with a power driven threading machine of the character having a tubular working receiving spindle carrying jaw assemblies which engage and disengage a workpiece in the spindle. During a threading operation, the jaws engage a workpiece and there- after rotate the workpiece and spindle in one direction about the spindle axis. When the jaws are displaced to re- lease the workpiece, the jaws and spindle are rotated in the opposite direction about the spindle axis. The disclosed attachment is adapted to be received in the threading ma- chine spindle in place of a workpiece to provide a driving coupling such as for an auxiliary tool assembly supported on the threading machine. The attachment is provided with a head which is adapted to be engaged by the jaws to drive the attachment in a direction corresponding is provided with a threading direction, and the attachment is provided with a one-way torsion spring clutch adapted to engage the interior of the spindle such that the attachment is rotated in the opposite direction when the jaws move out of engagement with the attachment and so drive the spindle. The outer end of the attachment is provided with a coupling arrangement by which the auxiliary tooling can by driven in opposite direc- tions by the attachment.

588436

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