. Bulletin. Science. Figure 60.—Varley's dynamo of 1866. From J. Dredge, Electric Illumination, London, (about 1882), vol. I, p. Figure 61.—Siemens' dynamo of 1866. From A. Thomalen, "Zur Geschichte der Dynamo- Maschine," Beitrage zur Geschichte der Technik und Industrie, 1916, vol. 7, p. 141. of the new principle. Since then, the term has been shortened to "; Gramme was the first to make the dynamo a success commercially.*^ He was a Belgian carpenter who worked with a compatriot, Joseph van Malderen, at the shop of the Societe I'Alliance as model-maker. A
. Bulletin. Science. Figure 60.—Varley's dynamo of 1866. From J. Dredge, Electric Illumination, London, (about 1882), vol. I, p. Figure 61.—Siemens' dynamo of 1866. From A. Thomalen, "Zur Geschichte der Dynamo- Maschine," Beitrage zur Geschichte der Technik und Industrie, 1916, vol. 7, p. 141. of the new principle. Since then, the term has been shortened to "; Gramme was the first to make the dynamo a success commercially.*^ He was a Belgian carpenter who worked with a compatriot, Joseph van Malderen, at the shop of the Societe I'Alliance as model-maker. As Gramme's interest in electricity grew, he left the shop to further his education and to become an instrument-maker by working with Ruhmkorff and then Disderi (or, some say, Froment). He finally turned to working out his own ideas, and his first 89 O. Colson, "Zenobe Gramme: Sa Vie et ses oeuvres," Wallonia, 1903, vol. 11, pp. 261-279; Jean Pelseneer, <;CToAe Gramme, Brussels, 1944, ed. 2. PAPER 30: DEVELOPMENT OF ELECTRICAL TECHNOLOGY IN THE 19TH CENTURY: III 379. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution; United States. Dept. of the Interior; United States National Museum. Washington, Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off
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