Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 361
e two sets of contact rollers, one set attached tothe top and one set to the bottom carbon. The principal noveltyin this lamp is the use of plate carbons. Some of these lamps have been in use in Mr. Piettes paperfactory at Pilsen, and work remarkably well: they have proved 340 THE ELECTRIC LIGHT.… … Fig. 200. is supported and free to move upon the contact rollers, rr ; onecarbon is fixed to the end of the tube, C, and the other to thepivoted arm, D; the coils, M and M^, are practically arrangedin the same way as in the previously described lamp. THE PILSEN ELECTEIC LAMP. 341 The special…
Electrical engineering
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