Hallberg, Josef Henrik, 1874- · New York city, The Moving picture world · leaf 125
ower carbon unless the operatorin the meantime changes the angle of the upper carbon, 118 MOTION PICTURE ELECTRICITY or through other means pushes the upper carbon forward,or tilts the lower carbon backwards so as to maintain therelative positions of the core of the upper carbon and thepoint of the… … Fig. 63 Fig. 64 In view of the trouble in obtaining constant results withthe carbon setting as illustrated in Fig. 63, it has beenuniversally agreed by operators that the best results withdirect current are obtained with a soft cored carbon onthe top and a solid carbon for the bottom, both…
Motion picture theaters · Electric lighting
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