Patent ID: 6391248
Filing Date: 2002-05-21
Classification: B23K

Abstract:
A circle cutting attachment for a cutting torch having a cutting tip at one end and a barrel attached to gas lines at the other end comprising:an elongated rack having a longitudinal axis, a front end, and a rear end, said rack having a lower surface with a plurality of gear teeth extending therefrom; a torch tip sleeve attached to the front end of said rack, said torch tip sleeve having a body with a top and a bottom, a cylindrical opening passing through said body, said cylindrical opening having a longitudinal axis that is angled forwardly through said torch tip sleeve body from said top to said bottom; a cradle arm extending upwardly from the rear end of said rack; a cradle attached to the outer end of said cradle arm, said cradle being adapted to tightly engage the barrel of a cutting torch; a pinion gear carriage having a channel extending therethrough, said rack extending through said channel, said carriage having a pinion gear rotatably attached to said carriage, said pinion gear having a plurality of gear teeth positioned and adapted to engage said gear teeth of said rack, said carriage having means for locking said carriage to said rack; and a centering pin extending downwardly from said pinion gear carriage.