The motion picture projectionist (Nov 1931-Jan 1933)

December, 1931 Motion Picture Projectionist 31 RECENT PATENTS This page is conducted by Mr. Ray B. Whitman, Patent Attorney, 230 Park Avenue, New York City. Copies of any of the patents cited may be obtained by addressing the "Patent Editor," this magazine, and enclosing fifteen cents to cover costs. 1,828,444. METHOD OF AND APPARATUS FOR RECORDING SOUND ON MOTION PICTURE FILMS. William Rom Berwyn, 111. Filed Nov. 15, 1928. Serial No. 319,515. 3 Claims. (CI. S8— 16.2.) r~zz-z~~ zrr 1. A method of recording sound on a moving picture film which consists in utilizing two positive films of the same picture and projecting one positive film onto a screen for guidance in applying sound to a negative film made from the other positive film of the same picture, driving said other positive of said film in synchronism with the projected film, masking a portion of said other positive to thereby provide an area for the sound record, driving a negative film in synchronism and printing relation with said other positive and with the sound area of said other positive masked as to said negative, and simultaneously recording sound on the sound area of said new negative, the sound record being applied to the sound area of said negative in accordance with the projected positive of the same picture. 1,828,749. MOTION PICTURE SCREEN. Albert L. Raven, Mount Vernon, N. Y. Filed Tuly 11, 1930. Serial No. 467,149. 10 Claims. (CL. 88—24.) 2. A screen _ for the projection of pictures accompanied by sound comprising a plurality of wavy horizontal strips arranged with the upper edge of each strip overlapping the lower edge of the next higher strip, and the peaks of the waves in said strips opposite one another, and means for securing the strips to one another at said peaks whereby numerous sound passages are provided between said points of attachment extending upwardly from the rear toward the front of the screen. 1,827,947. SYNCHRONIZING TALKING MOTION PICTURE MACHINES. William R. Moore, Jr., Hagerstown, Md., assignor to Deca Disc Phonograph Company, Waynesboro, Pa., a Corporation of Pennsylvania. Filed Apr. 29, 1929. Serial No. 359,014. 3 Claims. (CI 88—16-2.) 1,829,633. PROCESS FOR TAKING OR PROJECTING PHOTOGRAPHIC OR CINEMATOGRAPHIC PANORAMIC VIEWS OR VIEWS EXTENDING IN HEIGHT. Henri Chretien, St. Cloud, France, assignor to Societe Anonyme Francaise dite Societe Technique d'Optique et de Photographie (S. T. O. P.), St. Ouen, France. Filed Jan. 9, 1928. Serial No. 245,558, and in France Apr. 29, 1927. 3 Claims. (CI. 88—16.) 1. Means operably connected to a talking machine and a picture projecting machine to drive them in synchronism comprising a motor, a motor shaft, a worm on said shaft, a flexible connection in said shaft, a record table, a shaft supporting said table, a worm gear on said shaft, and means for adjusting the said worm toward the said worm gear for taking up lost motion between the shaft of the motor and the shaft of the record table, substantially as set forth. 1,828,941. SYSTEM FOR CORRECTING SOUND RECORDS. Roy J. Pomeroy, Los Angeles, Calif. Filed May 22, 1928. Serial No. 279,790. Renewed Mar. 13, 1931. 6 Claims. (CL. 179-100.3). 1. The method of modifying sound records that includes, making an original record of audible sound, audibly reproducing the sound with the distortions of reproduction, making a distortion record of the distorted sound as so reproduced, synchronously producing electrical sound currents from the original and the distortion records, differentially combining the sound currents so obtained in such a manner that the sound currents are neutralized except for a distortion-representing current, making a correction record of the distortionrepresenting current, and making a distortion-corrected record by modifying the original record with the correction record in such a manner as to alter the original record by the amount of and in a sense opposite to the distortions introduced in reproduction. 3. The improvement in the art of projected pictures which comprises first determining what portion of a view other than any having the relative dimensions of the image space of the film is desirable for reproduction, then photographing such portion while optically compressing the image in one dimension sufficiently to make it correspond to the relative dimensions of the image space, and thereafter projecting the image while optically restoring the image in said dimension to give it the dimensions of said portion of the view, whereby projected pictures may be given the dimensions best suited for framing the view without regard to the image spaces on the film. 1,829,634. TAKING AND PROJECTION OF MOTION PICTURES AND FILMS THEREFOR. Henri Chretien, S't. Cloud, France. Filed Jan. 28, 1929, Serial No. 335,564, and in France Apr. 29, 1927. 4 Claims. (CI. 88—19.5.) 14 ; + '■/ ! + i + j-f! 1 + {+; -H 1. A motion picture film having thereon a plurality of series of images, each image being of the same area, the images of one or more of said series all having proportions normal with those of the object and the images of another or others of said series all being optically compressed in one given direction whereby by projecting the film on the screen with ordinary enlargement of the images of some of the series and, with suitable differential enlargement of images of the other series, pictures in natural proportions but of different sizes and shapes best suited to the nature of the view may be made to appear upon the screen.