Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 496
Fig. 286. THE WESTON ARC LAMP. 475 portion of the total energy was actually wasted, so far as its il-luminating effects were concerned, and hence the results were farfrom economical. The next improvement made by Mr. Weston was during theyear 1879, and consisted of an organization in which an… … Fig. 287. Fig. 288. Figure 286 shows the external appearance of this lamp whenmounted and ready for use. The regulating mechanism isplaced within a hollow metallic cylinder W, from the bottom ofwhich depend two metallic rods U U. A base, V, is attached tothese, supporting the lower carbon holder X…
Electrical engineering
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