File:Electrical world (1904) (14784867395).jpg

Identifier: electricalworld43newy (find matches)
Title: Electrical world
Year: 1883 (1880s)
Authors:
Subjects: Electrical engineering
Publisher: (New York McGraw-Hill Pub. Co., etc.)
Contributing Library: Engineering - University of Toronto
Digitizing Sponsor: University of Toronto

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FIG. 3.—EXHIblT OF HUTCHISO.V ACOLSTIC CO.MPANV. provided by the Educational Department and these boys, who hadheard no sound from birth, were made to hear music and the voiceby using the acousticon. This instrument consists of a small battery,a specially-designed telephone receiver, and a transmitter whichamplifies the sound and imparts the waves to auditory nerves. Themassacon is a magnetic instrument which emits sound waves insharp saw-tooth form and sets the ear drum and auricles in vibra- FIG. 4.—EXHIBIT CF II ROY CLAY WORKS ANU STANDARD UNDERGROUNDCABLE COMPANY. overhead and subsurface lines. A number of cabinets contain sim-ples of telephone, lighting and power cables made by the StandardInderground Cable Company. The Edison historical exhibit, made under the auspices of the.Association of Edison Illuminating Companies, contains a collec-tion of early generators, motors and other apparatus constructedunder the personal direction of Mr. Edison when electrical engineer-
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FiG. 5.—Edison Historical Exhibit. tion, which stimulates them the same as massage to weakenedmuscles and restores the ear to normal condition. The only underground exhibit in the Electricity Building is thatof the McRoy Clay Works and the Standard Underground CableCompany near the northwest corner entrance. The installation of ing was in its infancy. About the walls of the exhibit spaces arehung photographs of the pioneers and their early work. The Jumbodynamo, made by the Edison Machine Works, direct-connected toa high-speed engine, forms an interesting comparison with themodel of the General Electric io,ooo-hp Niagara generator, which 1036 ELECTRICAL WORLD and ENGINEER. Vol. XLIII, Xo. 22 is across the aisle. The first Edison electric locomotive \vith itspassenger car shows in a graphic way the progress in transportationmade since 1880. The photograph of the British section reveals the splendid displayof electrical and scientific instruments made by the English manu-facturers. Mo

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