Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 97
when the carbons take a new position, andthe feeding goes on as before. The ratchet wheel is preventedfrom turning more than one tooth at a time by a spring at the 82 THK KLECrmC LKillT. end of the lower lever. The pull of the nick is opposed to thespring, and when the pull is reduced by the… … Fig. 41. compound levers, so that by changing the position of the con-necting link the leverage can be readily adjusted. Adjustments may also be made with the thumb nut on thetop of the case, which is attached to a retractile spring. Whilethis lamp is not so susceptible of a very fine adjustment,…
Electrical engineering
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