Hallberg, Josef Henrik, 1874- · New York city, The Moving picture world · leaf 185
r and further from thecenter of the lower carbon point, thus making it necessaryto push the upper carbon forward or readjust the uppercarbon clamp so that the upper carbon will be put at agreater angle, in that way pushing its crater forward, orby swinging the lower carbon point backward so as… … MOTION PICTURE ELECTRICITY 179 great deal of judgment and care so as not to interferewith the continuous operation of the light while the pic-ture is being exhibited. The gain by putting the carbons as illustrated in Fig.103 when the alternating current arc is controlled by theordinary means, as…
Motion picture theaters · Electric lighting
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