Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 463
placed so as to 419 126 WELDING form a box around the part to be welded, and then filled with theclay, etc., of the mold, the plates being fastened with bolts, tie-rods,clips, or clamps of whatever sort may be available. Fig. 128. Thefirst step in the formation of the mold is to build a collar of… … Fig. 129. Preheating Steel Rail Prior to Forming WeldCourtesy of Goldschmidt Thermit Company brick, fire clay, and fire sand in equal parts. There must be threechannels in every mold, a pouring gate, a riser, and a heating gate.The pouring gate should run from the top of the mold down to thebottom…
Electrical engineering
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