A form of resistance spot welding, similar to projection welding, patented in 1898. A common application of the Kleinschmidt Process is in joining large pieces of thin metal. The sheets are prepared with raised sections, or projections, to localize the low of current, and pointed copper electrodes are used. Machines used in this type of application must provide for the exertion of heavy pressure on the electrodes after the metal is heated to the welding point. See RESISTANCE WELDING.
