The standard manual of dynamos and practical application of dynamo-electric machinery (1915)
MacFadden, Carl K. [from old catalog], Ray, William D., [from old catalog] joint author · Chicago, Laird & Lee, inc. · leaf 122
mpany, thelargest rival of the General Electric Com-pany, which owns the Edison patents, wasone of the first to bring out a new lamp.It has been known as the Westinghoose *stopper* lamp, andthe principle may be readily seen from figure 33. The bulbsin this lamp are provided with a heavy moulded… … FIGURE 33.WESTINGHOUSESTOPPER LAMP. Il8 TYPES OF INCANDESCENT LAMPS The claim is made that a gas is used in the bulb instead ofa vacuum being produced and that the air which may leak inafter the stopper is sealed in by means of cement pouredover its top is not enough to injure the successful…
Electrical engineering · Electric machinery
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