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Motion picture electricity (1914)

Hallberg, Josef Henrik, 1874- · New York city, The Moving picture world · leaf 133

An illustration from Motion picture electricity, 1914, leaf 133
e, is not right for direct current. In order to coaxthe arc forward, it will be necessary to put the upper car- 126 MOTION PICTURE ELECTRICITY bon slightly behind the lower, something like the illustra-ti n shown in Fig. 66. This matter of adjusting the carbons for different ma-hine positions is of… … For advertising purposes it is sometimes necessary toput the projector in a position where it will show a pic-ture immediately below the machine or stereopticon. Forinstance, if it should be required to throw a picture on asidewalk, then the lamp would have to set with the con-densing lenses facing…

Motion picture theaters · Electric lighting

Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.

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