Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 209
741. LUMINOUS FOUNTAIN.—The lower end of the jet nozzle is fitted with a strong disc of plateglass. A concave mirror, placed in the focus of an arclight just below the glass disc, brilliantly illuminatesthe water jet. 198 ELECTRIC POWER AND CONSTRUCTION. … 742. ELECTRIC HEATER.—Coils of German silver wirewound around asbestos cords and rove over porcelain buttons forinsulation. The buttons may be fastened to a frame of any requiredform. iiiiiiiiifinigg^ 743. ELECTRIC SOL-DERING COPPER.— The copper is wound witha coil of resisting material; platinum…
Mechanical movements
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