Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 197
houldered upon the exterior,and upon this shoulder rests a ring of insulating material largerthan the part of the socket it incloses, but with a flange extend- 182 THE ELECTRIC LIGHT. ing inwardly at tbe top, so as to approacli closely the upper part,a chamber being formed thereby—the socket… … Fig. 96. edges contact with and close circuit between the two pins beforenoted. Upon the socket within the ring a spring pawl is fastened,taking into recesses cut upon the interior of the ring, so as tolimit the movement of the ring upon the socket and also indi-
Electrical engineering
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