Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 210
745. ELECTRIC SEARCHLIGHT,Edison model. An arc light in front ofand in the focus of a concave reflector.It gives a beam of light nearly parallel.The front of the case has a plane glassfor protection. It swivels in all direc-tions. ELECTRIC POWER AND CONSTRUCTION. 199 … 746. ELECTRIC FURNACE, show-ing the recess and flat crucible. Elec-trodes of hard carbon and connections. 747. OPEN TOP ELECTRICFURNACE.—A cavity in a box of re-fractory material with holes on eachside through which the insulated car-bon electrodes are inserted. 748. SIEMENS ELECTRIC…
Mechanical movements
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