Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 465
ted. The necessary apparatus, consisting of the pipe facing machine, pipeclamps, crucible and mould are light and portable and can be carried to any point wherework is to be done. As no outside power is required, the welding can be executed whereverthe pipes are laid. It has been found in practice… … --.. ^WQStak. Fig. 4,497.—Open mould and crucible in position for making Clark thermit rail joint. In itsoriginal form the Clark joint consisted of a combination of splice bar and thermit steel,it being Mr. Clarks opinion that the head of the rail could be supported by using platesthat would come^…
Electrical engineering
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