Exothermic cutting electrode
AssigneeArcair Company
InventorsPerry J. Rieppel, Paul E. Moore
Life of this patent
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Abstract
An exothermic cutting electrode or burning bar having an oxidizable metal fluid conduit (tube) surrounded by a mass of metal similar to that of the fluid tube, the entire structure covered with an outer oxidizable metallic tube and/or an electrically insulating water impervious cover, either end of the electrode being adapted for connection to a source of oxidizing fluid and electric current, so that, an arc can be struck between a workpiece and the free end of the electrode to produce a cutting flame. By proper selection of the type and mass of the materials of construction the electrode will burn after the electric current has been turned off.
Claims5
In an exothermic cutting electrode of the type comprising an inner tube around which is wrapped a continuous length of wire in a helical fashion covered by an outer tube, the improvement comprising a plurality of random indentations disposed around and in said outer tube to position said inner tube, coiled wire and outer tube in fixed position one to the other.
An exothermic cutting electrode comprising in combination:
- a fluid oxidant passage tube of electrode length, said tube of an oxidizable metal;
- a mass of a similar metal disposed around said fluid oxidant passage tube in the form of a continuous wire helically wound around said tube;
- an outer tube of an oxidizable material disposed over said fluid oxidant passage tube and said mass of metal;
- a plurality of randomly spaced indentations in the surface of said outer tube to hold said mass of metal, said fluid oxidant passage tube and said outer tube in intimate contact with each other;
- and
- an electrically insulating water impervious coating of a vinyl having a red dye dispersed throughout over the electrode, said cover easily removable from the ends of said electrode to facilitate initiation of oxidation of said tube end and metal mass.
Dependencies are inferred from the claim text.