International photographer (Jan-Dec 1941)

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Pfl T e n TS By ROBERT W. FULWIDER Patent Attorney, Los Angeles No No. 2,219,304 — Colored Photographic Multilayer Material. 4 claims. No. 2,219,305 — Photographic Multilayer Material for Color Photographic Purposes. 5 claims. No. 2,219,306 — Photographic Material. 6 claims. Bela Caspar. Hollywood, Calif. Applns. Dec. 3, 1938. In Great Britain Dec. 9, 1937. Color films having a plurality of emulsion layers with one or more of the layers containing dyes which are fast to ordinary photographic treating solutions. No. 2,219,850 — Sound Picture Apparatus. Herbert Norman Schwarzkopf, Lawrenceville, N. J., assignor to Radio Corp. of America. Appln. March 28, 1936. 2 claims. A removable flexible floor covering having sockets on said covering for fixing the position of a camera, other sockets on said covering for fixing the position of microphone supports, and other sockets on said covering for fixing the position of a graduated screen in alignment with said camera. No. 2,219,987 — Multilayer Material for Color Photography and Method of Making the Same. 7 claims. No. 2,219,988 — Light-Sensitive Multilayer Photographic Material and Process for Making the Same. 5 claims. Bela Caspar. Hollywood. Calif. Appln. Dec. 3, 1938. In Great Britain Dec. 9, 1937. Color films having a plurality of emulsion layers with one or more of the layers containing dyes which are fast to ordinary photographic treating solutions. No. 2,223,525 — Film Magazine Light Trap. Charles Melvin Miller, assignor to Twentieth Century-Fox Film Corporation. Appln. May 9, 1938. 7 claims. A motion picture camera which has light proof doors at the film apertures which lead to the film magazine the doors opening and closing as the lock on the camera door is operated. No. 2,224,163— Color Photography. Virgil B. Sease and Dearie R. White, assignors to Du Pont Film Manufacturing Corp. Appln. March 20, 1937. 3 claims. A method of producing individual color component records from superposed image records by printing an intermediate record of the superposed record, bleaching the superposed records in a non hardening bleach sail until the outer image is converted to silver salt, removing the salt in a fixing hath, and then reforming the eliminated record hv printing through both the intermediate record and the remaining records of the original superposed record. 2,224,329 Color Photography. Gustav Wilmanns, Wilhelm Schneider, and Gerhard von Kitjawa, Germany, assignors to General Aniline & Film Corporation. Appln. Oct. 28, 1937. In Germany Oct. 31, 1936. 1 claim. A method of producing color pictures by making an exposure on a multi-emulsion negative having special color formers fast to diffusion in it, and printing onto a multi-emulsion positive having color formers fast to diffusion while adjusting the color of the printing light. No. 2,224,383 — Film Footage Indicator. Otto W. Githens, George Kende, and Everett M. Porter, assignors to Universal Camera Corp., New York. Original appln. April 7, 1937. Divided and this appln. July 19, 1939. 7 claims. A footage indicator for motion picture cameras having a spring motor, the indicator being driven by the spring motor by means of a ratchet wheel. No. 2,224,726 — Photographic Camera. George B. Finnegan, Jr., and George D. Creelman, Mountain Lakes, N. J., said Creelman assignor to said Finnegan, Jr., and Hobart N. Durham, Munsey Park, Long Island, N. Y., a partnership. Appln. Aug. 25, 1938. 5 claims. A camera having a photocell control for the diaphragm and also a heat sensitive control to vary the transmission of light to the film in inverse proportion to the amount of radiant heat energy in the light. Ice House (Continued from page 11) inated by the gases of the many arc lamps. Roughly, 650 tons of refrigeration which would supply the entire needs of a small city for a long time, barely meet the requirements under the numerous arc lamps used in a shooting period of one day of Technicolor. An ideal setup for refrigerated air conditioning would be an empty cube or cylinder permitting an unobstructed flow of chilled air. We are certain that the readers of International Photographer are aware of how much free area there is on the average set, coupled with the large background or cycloramas used to extend the horizon limitations of the sets, creating a genuine headache on air circulation. Forcing approximately 65,000 cubic feet per minute of fresh air, chilled to about 20°F. or less at floor level, gives an idea of the heat generated by the arc lamps when you realize that the air escaping through the exhaust hatches in the ceiling has increased in temperature from 20° to 70°F. Bodily discomfort has been a primary consideration among the operating CINEX Light Testers — Polishers used by all Major Studios. We are the sole Manufacturers and Distributors. Manufacturer of 16mm and 35mm Recording Heads, Developing Machines, Bipack Color and Black and White Printers, Rewinds. Special Machinery built to order. CINEMA ARTS-CRAFTS 914 No. Fairfax HE 1984 Hollywood, Calif. Cable Address: "CINEBARSAM" A CAMERA TABLE TOP MICROGRAPHIC COPYING LENS CHANGE HORIZONTAL '^fi SOLAR GIVES Y0HAUS/X A Solar will bring out the "Prize Winning" qualities 01 every negative — in every print. It gives you all the wanted features for perfect enlarging — adjustable condensers, perfected light and optical system, micrometric focusing, etc. In addition your Solar can be instantly converted to a portrait and copying camera — coupled to a microscope for scientific work l r^^ir^^i^Wv — or '* may also be used as a copy stand with your regular camera. Eight models cover 35mm. to 5x7 inch negatives. Prices start at $34.50. ENLARGING TREATISE FREE Prepared by experts and written in the amateurs' own language. Thirty-six pages profusely illustrated. Tells you how to transform your ordinary negatives into big beautiful pictorial enlargements. Loaded with meaty information. Answers every enlarging problem. Ask for Enlarging Treatise IP141. It's Free. *'V' ® BURKE & JAMES, Inc., 223 W. Madison St. Chicago 26 International Photographer for January. 1941