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Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary (1917)

Hiscox, Gardner Dexter, 1822?-1908 · New York : The Norman W. Henley publishing co. · leaf 206

An illustration from Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary, 1917, leaf 206
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,… … 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 GASFURNACE.—Gas enters thecrucible through a hollowcarbon electrode. The op-posite electrode is a coppertube closed at…

Mechanical movements

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