In the District Court of the United States, for the Eastern District of Pennsylvania, the United States of America, petitioner, vs. Motion Picture Patents Company, et al., defendants (1914)

Record Details:

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Harry N. Marvin, Direct Examination. 325'.) having perforated edges supported on opposite sides of the lens, and movable longitudinally with reference thereto, and having an intermediate section crossing the lens, a main driving shaft adapted to be continuously rotated, and a feeding mechanism positively engaging the intermediate section of the film, and adapted to move it across the lens with an intermittent movement, and at a high rate of speed, a shutter actuated by the main driving shaft, and adapted to expose successive portions of the film during the intervals of rest, and a take-up reel actuated with varying speed by the main driving shaft, and adapted to take up the film after exposure. In addition to these characteristics, the cameras possessed continuously rotating sprocket feed wheels, located between the intermittent feeding device and the supports, and positively engaging the film, one such feed wheel being located between the supply reel and the intermittent feeding device, and its action being to continuously and steadily and uniformly draw film from the supply reel and deliver slack film to the intermittent feeding device, the other continuously rotating sprocket feed wheel being located between the intermittent feeding device and the take-up reel, and its action being to continuously take up the slack film supplied by the intermittent feeding device, and deliver it to the take-up reel. Q. Did the so-called IUograph camera, the invention of Herman Casler, have the above characteristics of the cameras just described by you, and if not, why not? A. The Biograph camera, the invention of Casler, did not possess all of the above characteristics, but differed from the type of camera described, in several particulars. It did not use a perforated photographic film, but used a smooth, imperforated film. This film was not fed across the lens uniformly by feeding devices that positively engaged the film, but it was fed by friction, with a varying feed, so that the successive portions of film exposed to the lens were not uniformly spaced; the negative film resulting from the operation of this camera differed from the negative film resulting from the operation of the type of camera formerly described, in that it did not possess a series of perforations adapted to engage with feeding devices, and the series of photographs on the film were not equi-distant, but were unevenly spaced, and the negative produced by this camera