Welding electrode wire having multiple current contacts and dispensing apparatus therefor and method of making same

摘要

An elongated welding electrode wound on a dispensing spool and having a plurality of welding current conduction terminals is shown. The electrode has a plurality of transverse grooves formed therein and the grooves are filled with a soft metal substance to form conductive strips. The top plate of the spool has a plurality of arms covering over the conductive strips and has conductive terminals therein contacting the conductive strips in the electrode for supplying the welding current in maximum efficiency to the electrode in the welding operation.