Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 211
COW f>OT£NTlf^u 752. ELECTRIC WELDING PLANT.—A, Alternating dyna-mo; F, resistance coils and switch; B, transformer; C, clamping jaws;D, rods or pieces to be welded; E, switch in the primary circuit. … 753. PORTABLE ELECTRIC MOTORDRILL PLANT, with a stow flexible shaft.A spool on the motor winds up or lets outthe electric wires, so that the apparatusmay be quickly moved from place to place. ELECTRIC POWER AND CONSTRUCTION. 20I
Mechanical movements
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