GB731890A - Electric arc welding torch with a liquid-cooled non-consuming electrode - Google Patents

Abstract

731,890. Arc welding electrode holder. SOC. L'AIR LIQUIDE, SOC. ANON. POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES G. CLAUDE. June 22, 1953 [June 23, 1952], No. 17285/53. Class 39 (3). [Also in Group XXII] An electric arc welding torch comprising a non-consuming electrode cooled by direct contact with a liquid contained inside a cooling chamber surrounding the electrode and provided, for sealing the chamber from the outside, with an annular joint surrounding the electrode near the end whence the arc starts is characterized in that the joint is of an elastic material, such as rubber. A non-consuming electrode 17 is clamped in the body of the torch by the split end 39 of a sleeve 21, the sleeve 21 being pressed up by a socket 15, threaded on the torch casing 12, to urge the end 39 against a conical seating 38 in the torch body. Cooling water is supplied through a duct 5 in the handle to an inner compartment 33 to pass up this compartment through holes 32 down an outer compartment 34 to an outlet duct 6 in the handle. The lower end of the compartment 33 is sealed by a rubber joint 25 between the electrode and the sleeve 21 and by a rubber joint 28 between the sleeve 21 and the casing 12. Argon, for shielding the arc, is supplied by a duct 4 in the handle to pass between the sleeve 21 and the casing 12 through holes 20 in the socket member 15 to a duct 16 of refractory material surrounding the electrode and secured to the socket 15.