International projectionist (Oct 1931-Sept 1933)

34 portion thereof parts of the picture film so that the operator will be enabled to match the two films in reproduction. Multi-Element Screen 1,824,353. Screen for Shoiving Projected Images in Lighted Rooms and for Short-Exposure Photography, to Rasmus Olaf Jonas Jensen. A screen consists of a member of light refracting material, one surface of which presents to the image source a multiplicity of lenticular elements. Each of the elements focuses upon its opposite surface the light received. This surface is translucent only at these foci and is light absorbent at all other points. Color Photography 1,824,446. Method of and Apparatus for Producing Motion Pictures in Color, to Edwin L. Pearson. A projection machine produces colored motion pictures by successively projecting images through different color filters, the colored images being projected upon a screen having various colored sections corresponding to the filters. The relative positions of projector and screen are shifted to project images successively upon portions of the screen corresponding to the particular filters through which particular images were produced. Photo-Electric Cell 1,824,573. Photo-Electric Tube, to Fritz Schroter; assigned to Gesellschaft fiir Drahtlose Telegraphic m. b. H. This photo-electric cell has a light sensitive cathode formed of an alkali metal to which a very small portion of caesium has been added to accentuate the photo-electric effect and to raise the critical potential at which glow discharge starts. September 29, 1931: Film Magazine 1,825,142. Motion Picture Film Magazine, to William A. Bruno; assigned to Clarence W. Fuller. The drive for the film is constituted by a film reel having a plurality of spaced openings on the film carrying surface. A propelling drum is mounted within the reel and has a plurality of teeth which simultaneously engage in the openings in the reel and the openings in the film carried by the reel. Overlapping Film Reel 1,825,438, 1,825,439 and 1,825,440. Photo Sound Recording or Reproducing, and Sound Recording or Reproducing Apparatus, to Aloysius J. Cawley; assigned to Radio Corporation of America. These patents relate to sound film. A reel carries the film with the sound records at its edge. The wheel is on such extent that the sound extends beyond the edge of the wheel to permit proper transmission of light therethrough. Driving Mechanism 1,825,442. Driving Device Employing Maltese Cross Wheels, to Marius Chambon; assigned to Etablissements L. Chambon. The mechanical movement in this patent for securing intermittent motion has a Geneva gear mounted on the driven shaft, and a plate on the drive shaft. The plate has a sliding member carrying a roller engaging the Geneva gear, and a cam, parallel to the plate, is engaged by another roller on the member. INTERNATIONAL PROJECTIONIST Granted October 6: Keel and Spindle 1,825,663. Film Reel and Spindle, to Arthur C. Hay den. The reel is made up of a pair of plates, held separated by a hub on which the film is wound. Both plates have openings formed therethrough, and one of them has tongues projecting into its opening to cooperate with a groove in a spindle extending through both openings to prevent movement of the reel axially of the sp'ndle. Color Photography 1,825,863. Color Photography, to Joseph B. Harris, Jr. The invention relates to the production of color potographs by first forming images on a layer of ligth sensitive material carried by a transparent member. Images are formed on the two faces of the material, that is, the exposed face and the face adjacent the transparent carrier. Then the outside image is developed and toned with ferric (compound of iron), salts after which this image is resensitized. Then the other image is developed and toned. Continuous Projection 1,825,953. Device for Permitting the Continuous Feeding of the Film in Projecting Apparatus, to Per Georg Halvar Hallongren. The apparatus is for projecting moving pictures without the customary intermittent stopping of the film. Two sets of mirrors are arranged radially upon two separate axes. These sets are rotated synchronously in the same direction. The reflecting surfaces in each group face in the same peripheral direction. The reflecting surfaces of one group face in the direction of rotation, while the reflecting surfaces of the other group face in the opposite direction. Light striking a mirror of one group is reflected to a mirror in the second group, provided, of course, the mirrors are in position. Since mirrors are continuously rotating as the film moves, the same interruption occurs as with a shutter and an intermittingly moving film. Color Process 1,826,001. Color Photography to John Naish Goldsmith and Thomas Thome Baker; assigned to Spicers, Ltd. The film consists of a cellulose derivative, the film base, first coated with a material reacting against the penetration of dye solutions and discharging agents into the base. A layer, which will take dyes and discharging agents, is applied then. Finally, a multicolor screen is applied. The essential conditions for producing pictures in stereoscopic relief are two: first, separate pictures must be made from different points of view, corresponding to the two eyes ; second, each eye of the observer must receive its appropriate view. No compromise with these fundamental requirements appears possible. Dr. Herbert E. Ives Director, Electro-Optical Research Bell Telephone Laboratories November 1931 Plurality of Cells 1,826,522. Apparatus and Method for Reproducing Photographic Sound Records, to Freeman H. Owens; assigned to Owens Development Corporation. Light from the light source is directed through a sound film and impinges either upon a light cell, immediately aligned with the film and thelight source, or upon mirrors or like light diverting means directing the rays upon one or more other light cells. All of the impulses in the individual light calls are jointly amplified and rendered audible. Granted October 13: Sound Picture "Stills" 1,826,786. Method and Apparatus for Reproducing Sound in Connection With Pictures, to Philip S. Hopkins; assigned to Agfa Ansco Corporation. The apparatus of this patent is designed to coordinate the use of a sound film with "still" pictures, that is, the mechanism coordinates the showing of such pictures with the reproduct'on of appropriate parts of a sound record. Film Printer 1,826,858. Photographic Printing Apparatus, to Vladimir K. Zworykin; assigned to Westinghouse Electric and Manufacturing Co. The apparatus is designed for transposing the record of one film upon another film, and apparently is intended to produce a picture of a different size or having different characteristics than the old film. The driving mechanism for the two films ave different effective speed producing portions. The driving portion for one film is within the driving portion for the other film, and light from the negative is transmitted through the space between the two driving portions. Fire Preventive 1,827,010. Film Flame Stop, to Lawrence D. Kohlmeyer. A frame is provided carrying a number of rollers, other frames being mounted to permit the rollers, by gravity, to swing downwardly toward, and to be stopped tangentially against, others of the rollers, apparently to grip and stop the film and to retain it against feeding where a fire has started and also to prevent burning back. Film Drive 1,827,588. Film Drive, to Edward W. Kellogg; assigned to General Electric Co. The film is driven by a sprocket and a drum, , and means are provided, responsive to difference in speed of the portions of film moved by the respective sprocket and drum members, as determined by the number of sprocket teeth openings, and independently of the length of film between the members. Screen Cabinet ^ 1,827,598. ♦ Moving Picture Cabinet, to Arthur Merriman. This patent is curious merely in that it includes, with a cabinet designed to direct a cinematic beam outwardly through an opening in one of its walls, a screen external of the housng and supported upon a framework so that both framework and screen may be folded into a substantially horizontal plane and slid into a compartment in the cabinet. 1,820,054. Light Guard for Motion Projector Light Guard * Picture Projection Machines, to AugustaDina; assigned to International Projector Corporation. The apparatus of this patent is to limit the area of the light beam falling upon the sound •JJOEJl