Memorandum for the the Motion Picture Patents Company and the General Film Company concerning the investigation of their business by the Department of Justice / submitted by M.B. Philip and Francis T. Homer. (1913)

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Le Prince obtained an iJnglish and American patent for an extremely intricate apparatus having sixteen different lenses, making, in effect, sixteen different ca;neran, by means of which it was attempted to make a series of pictures on sensitized strips advanced for this purpose. No one ever used the apparatus of either the DuGos or tliose LePrince patents for makirg negative motion pictures, and printing positives therefrom, the reason why being givon in the records of the suits under the ildis on reissues, to which we* shall refer. In t/:e summer of Ic3d9, ICdison had reduced to practice the invention of his caruera and film reissues and applied for his patent on the 24th day of August, 1891, and the patent was granted therefor August 31, 1897, No. 589,168, The device of the caiaera of this patent ooerated on tape-like senaitited film "several hundred or even thousands of feet long", having a row of holes at its edges, such devices being capable of advancing the film as rapidly aa from thirty to forty-six times a second so os to produce that many pictures on the film per second, tno filn being held at rest for nine-tenths of the time, aiid being moved during only one-tenth of ttie time for eac}i picture. Thus, asaujning tliirty pictures were taiten a second, the film was caused to rest for nine th ree-hiindredtiis of a second, and advanced -4