St. John, Thomas M. (Thomas Matthew), b. 1865 · New York, T. M. St. John · leaf 128
that of causing currents ofelecftricity to pass through the abutting ends of the piecesof metal which are to be welded,thereby generating heat at thepoint of contadl, which also be-comes the point of greatest re-sistance, while at the same timemechanical pressure is applied toforce the parts… … 126 HEAT PRODUCED BY ELECTRIC CURRENT. developed in the interior of the parts to be welded, theinterior of the joint is as efficiently united as the visibleexterior. With such a method and apparatus, it isfound possible to accomplish not only the common kindsof welding of iron and steel, but also…
Electricity
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
