Air cooled gas shielded arc torch
AssigneeUnion Carbide Corporation
InventorClifford W. Hill
Life of this patent
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Abstract
The torch comprises a collet assembly including a collet body and collet for receiving an electrode; a composite torch head having a barrel shaped end in which the collet assembly is mounted, a tubular shank extending from the barrel shaped end; and a cylindrical handle engaging the tubular shank in a coaxial relation at the forward end thereof. The torch handle has a seal assembly at the rear end thereof for forming a fluid sealed cavity within its interior. A separate power cable and shielding gas hose pass into the cavity through the seal assembly. The shielding gas functions to cool the torch handle and the torch body.
Claims8
In a gas shielded arc torch comprising a torch head having a body in the form of a barrel for supporting a collet body in which a collet is mounted for receiving an electrode, a tubular shank of electrically conductive material extending from said body for supplying current to said electrode through said collet body and collet respectively and forming a passageway for passing a shielding gas through said torch head for shielding said electrode;
- a hollow handle coupled in a fluid sealed engagement about said shank at the forward end of said handle and extending from said tubular shank in a substantially coaxial relationship therewith;
- a seal assembly mounted in fluid sealed engagement at the rear end of said handle for forming a fluid sealed cavity within ssaid handle relative to the atmosphere;
- power supply cable means extending through said seal assembly in electrical engagement with said tubular shank and gas conduit means extending through said seal assembly for exhausting shielding gas into said fluid sealed cavity, whereby said shielding gas substantially cools said handle and torch body before passing over said electrode.
Dependencies are inferred from the claim text.