Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 398
e positive carbon, a, passes, is twice as large as the pulleyto which the cord of the negative carbon, h, is attached. Bythis arrangement the uneven wear of the two carbons is compen-sated, and the focus of the light is kept stationary until the car-bons are consumed. To regulate the fall of the… … Fig. 226. 378 THE ELECTKIC LIGHT. shaft. By this arrangement the resistance of the air is em-ployed to regulate the speed with which the rod, a, is allowedto run down. The toothed wheel is not keyed to the horizontal shaft, butconnected to it by a ratchet clutch, so that when lifting theholder to…
Electrical engineering
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-438-270.webp)
