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A welding gun has a separable nozzle embodying longitudinally curved inner and outer concentric sleeves, and fore and aft-mounted bodies to which the opposed ends of the concentric sleeves are brazed to define an annular gas manifold between the sleeves into which gas feeds through the aft-mounted b

A welding gun has a separable nozzle embodying longitudinally curved inner and outer concentric sleeves, and fore and aft-mounted bodies to which the opposed ends of the concentric sleeves are brazed to define an annular gas manifold between the sleeves into which gas feeds through the aft-mounted body. The aft-mounted body detachably seats within a tubular handle and it contains a bore through which the consumable wire electrode feeds to the central bore of the inner sleeve. The fore-mounted body provides for connection of an adapter by which a current pickup tube is fixed to the curved nozzle in line with its inner sleeve to receive the wire electrode. Said fore-mounted body is ported at spaced intervals for discharge of gas from the manifold through the adapter and about the current pickup tube when assembled thereto. In an alternate structure, inlet and outlet tubes ported through the aft-mounted body follow closely along the outer sleeve to provide passage for cooling fluid to and from an annular chilling chamber fixed about the forward end of the nozzle. The outer sleeve, and in the alternate structure also the cooling chamber and its inlet and outlet tubes, are enclosed along the length of the nozzle by a snugly fitting insulative sheath.

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In a gas shielded arc welding gun havIng a handle of electrically insulative material, a curved nozzle embodying concentric, longitudinally-curved inner and outer sleeves of electrically conductive metal, and fore and aft-located mounting bodies of electrically conductive metal to which the respecti

In a gas shielded arc welding gun havIng a handle of electrically insulative material, a curved nozzle embodying concentric, longitudinally-curved inner and outer sleeves of electrically conductive metal, and fore and aft-located mounting bodies of electrically conductive metal to which the respective ends of the sleeves are silver brazed in gas sealing relation, the aft-located mounting body being releasably securable within the gun handle and having a passageway which aligns with the bore of the inner sleeve and into which a consumable wire electrode feeds, the fore-located mounting body having a center bore which aligns with the inner sleeve bore to receive the wire electrode fed therethrough, said fore-located mounting body being externally threaded for mounting of an adapter by which a current pickup tube is connected to the curved nozzle in line with said inner sleeve bore, the inner and outer sleeves defining an annular gas collecting chamber therebetween and said fore and aft located mounting bodies, said chamber being ported through the aft-located mounting body for connection to a gas supply and being ported through the fore-located mounting body to discharge the gas about the current pickup tube, and an external sheath of insulating material snugly fitting about said outer sleeve along the length thereof between said fore and aft-located mounting bodies.