Contractors' and Dealers' Association of California · San Francisco : L. A. Larson · leaf 525
machines will be adjust-ed so that when the fusing tempera-ture is just right, the electric cur-rent will be shut off by thermostatics!control, i. e.. the welds will never l>eheated too little or too much, Frand-sen says. They will be just as stand-ardized as the rivets driven by a bull-riveter.… … R IV1. FRANDSEN now commonly used. Two men willnow be able, by means of the mostmodern spot - welding machines, tomake just as many joists per day aseight men now can weld with thepresent method. ^Ir. Frandsen desires independentmanufacturers in every state in theFnion for making and placing his…
Architecture · Building · Construction industry · Engineering
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