US 4,283,043 A · Cutting torch attachment

Abstract

A system for using a cutting torch for making accurate curved, straight and beveled cuts. A supporting and guiding device is attached to cutting torches, which may be of various sizes and shapes, and includes an elongated bar having a ring and opposed set screw clamp at one end to receive the torch tip. A member on the elongated bar carries a workpiece engaging knife-edge wheel and supports the lower parallel tube of the torch, this member being removably mounted on and slidable along the bar to desired positions. The height bar above the wheel is adjustable for positioning the burning tip at the correct angle and spacing with respect to the workpiece. The wheel can be positioned with its plane transverse to the bar for making curved or lateral cuts, or parallel to the bar for making longitudinal straight, perpendicular or bevel cuts. A centering pin is slidably positionable on the bar for making long radius cuts. Smaller circular and other cuts are made with the use of a template having grooves in which the centering pin rides, the wheel being retracted during such operation. A method is disclosed using a template having a straight edge and keeping the torch parallel to such edge. Both the attachment and template are made of stainless steel to reduce hot metal adherence.

Claims19

Dependent claims

An attachment for supporting the tip of a cutting torch in desired relation to the work piece during a variety of cutting operations, comprising:

an elongated bar of uniform cross-section,
holding means secured at one end of said bar and adapted for clamping engagement onto a variety of burning torch tips of different sizes and shapes,
a support member mounted on said bar for adjustable positioning therealong and having an upwardly extending portion adapted for receiving the parallel gas supply tubes of a cutting torch having its burning tip clamped in said means,
a positioning member vertically adjustable on said upwardly extending portion and formed to bear against and support the lower tube of the cutting torch,
a rotatable wheel having an upwardly extending post engaged with the lower end of said support member and formed for selective spacing of said wheel from said bar and for selective rotative positioning of the plane of said wheel about the axis of said post, and
a centering point device having a downwardly directed point on a vertically extending shank carried by a keeper formed for adjustable positioning along said bar, whereby vertical movement of said shank in said keeper and said post in said support member adjustably positions the spacing and angle of said torch tip with respect to said bar.

3 more elements

An attachment for supporting the tip of a cutting torch in desired relation to the workpiece during a variety of cutting operations, comprising:

an elongated bar of uniform non-circular cross-section,
holding means secured at one end of said bar and adapted for clamping engagement on a variety of burning torch tips of different sizes and shapes,
a support member mounted on said bar for adjustable positioning therealong and having an upwardly extending bifurcated portion providing vertically extending legs adapted for receiving the parallel gas supply tubes of a cutting torch having its burning tip clamped in said means,
a positioning member vertically adjustable on said bifurcated portion and formed to bear against and support the lower tube of the cutting torch at a desired angle to said bar,
a knife edge wheel journaled at the lower end of a fork member having an upwardly extending post threadably engaged with said support member for selective spacing of said wheel from said support member and for selective rotative positioning of the plane of said wheel about the axis of said post, and
a centering point device having a downwardly directed point on a vertically extending shank threadably engaged in a keeper formed for adjustable positioning along said bar whereby rotation of said shank in said keeper adjustably positions the spacing of said point with respect to said bar.

3 more elements

Dependencies are inferred from the claim text.

Cutting torch attachment

Life of this patent

Cutting torch attachment

Life of this patent

Abstract

Claims19