Guide assembly for cutting torch
OwnerDonald G. Bonnellinventor
Life of this patent
Estimating the term…
Abstract
A holder secured to the tip of a cutting torch supports a guide about which a hole is to be cut in a steel pipe or sheet. A fixture, magnetically attached to the pipe or sheet supports a magnetically retained fitting to be tack welded to the cut hole at the desired angular orientation relative to the pipe or sheet. After the fitting is tack welded, the fixture is removed and the weld is completed.
Claims19
An assembly for cutting a hole in a steel pipe or sheet with a cutting torch having a tip and for positioning a fitting at the hole for welding thereto, said assembly comprising in combination:
- a) a holder adapted for attachment to the tip of the cutting torch;
- b) a guide supported by said holder for setting the radius of the hole to be cut;
- and
- c) a fixture adapted to be magnetically attached to the pipe or sheet, said fixture being adapted to magnetically support the fitting to be welded to the hole proximate the hole.
A method for forming a round hole in a steel pipe or sheet with a cutting torch and attaching a fitting thereto, said method comprising the steps of:
- a) attaching a guide to the cutting torch and setting the guide from the tip of the cutting torch a distance commensurate with the radius of the hole to be cut;
- b) rotating the cutting torch about the guide to cut the hole;
- c) magnetically locating a fixture on the pipe or sheet, which fixture includes an arm for magnetically supporting a fitting to be welded to the hole;
- d) positioning the arm and/or fixture to locate the fitting concentric with the hole;
- and
- e) tack welding the fitting to the hole.
A fixture for magnetically positioning a fitting to be welded to a hole cut in a steel pipe or sheet, said fixture comprising in combination:
- a) a pair of opposed sides for supporting at least one magnet for magnetically attaching said fixture to the pipe or sheet;
- b) a cross member adapted to engage said pair of sides;
- c) a post extending from said cross member;
- d) an arm supported by said post;
- e) a further magnet secured to said arm for magnetically retaining the fitting adjacent the hole prior to and during tack welding of the fitting to the hole.
Dependencies are inferred from the claim text.