Motography (Apr-Jun 1916)

April 1, 1916. MOTOGRAPHY 769 Recent Motion Picture Patents BY DAVID S. HULFISH PATENT Number 1,152,515. Fire Shutter. Issued to C. F. Jenkins, Washington, D. C. The shutter is before the film gate and carries an extra plate which protects the film gate when the shutter is not revolving at speed. No. 1,152,620. Screen. Issued to John B. Flogerzi, assignor of part to John T. Smith, St. Paul, Minn. The screen cloth is varnished, then a fine metallic dust rubbed in, then a coat of powdered glass applied. The screen may be improved by a second coat of varnish, metallic powder and glass powder. 1,152,989. Intermittent Movement. Issued to P. J. Taylor, Cairo, 111. The drive wheel is mounted loosely upon the intermittent shaft and is connected to the shaft by a spring which is kept wound by the movement of the drive wheel. The intermittent shaft and sprocket are held by cam teeth and the drive wheel has cams which shift the holding teeth to release the sprocket, the sprocket then being shifted quickly by the spring to the drive wheel. The suddenness of shift may be regulated obviously by regulating the tension of the spring from the drive wheel to the intermittent sprocket shaft. 1.153.163. Combination Lantern. Issued to C. F. Jenkins, Washington, D. C. In a lantern for slides and motion pictures, the lamp house swings through 90 degrees, the projection of the slide is made directly to the screen, and the projection of the motion picture is made through a reflecting prism. The prism is between the film window and the lens. The film has its edge to the screen. The shutter is between the film window and the lamp house. 1.153.164. Intermittent Movement. Issued to C. F. Jenkins, Washington, D. C. The claw system is used. The claws are mounted upon a carriage which rotates upon a vertical rod to carry the claws into the perforations, and then slides upon the rod to shift the film. 1,153,887. Film Feed. Issued to T. H. Blair, assignor to Whiting Mfg. Co., Northboro, Mass. (Application filed Nov. 29, 1909.) Rotating mechanism rotates the feed reel, the rotation being controlled by the tension of the film between the feed reel and the film gate, yet the pull of the film is not depended upon to turn the feed reel. The claims cover this feature broadly. 1,153,963. Film Cabinet. Issued to A. E. Sengstock, Detroit, Mich. Each reel has a separate lid. The lifting of the lid pulls a strap to lift the reel far enough to grasp. 1,154,233. Projector. Issued to H. B. Byron, assignor of parts to A. H. Adams, A. E. Pickard, and J. L. Jackson, Chicago, 111. There is no intermittent film shift, and the film moves steadily. The beam of light passes through the film strip and then falls upon an inclined plate which rotates and which bears small rocking mirrors. The mirrors correct the motion of the film to produce a steady projected picture from the moving images. An inclined fixed mirror then reflects the beam of light to a horizontal direction through the lens to the screen. 1,154,835. Projector. Issued_ to W. Buersfeld, assignor to Carl Zeiss, Jena, Germany. The film moves continuously and a comparatively large wheel with a number of reflectors, each of three reflecting surfaces, compensates for the film motion to produce a steady picture on the screen. 1,154,952. Fire Shutter. Issued to J. T. Wells, assignor to Edwards Mfg. Co., Cincinnati, Ohio. A fire shutter is lifted by a worm thread mechanism upon the drive, the worm thread operating to lift the shutter only when the speed of the projector is sufficient for safety. 1,155,056. Color Projection. Issued to William Friese-Greene, assignor to FrieseGreen Patents, Limited, London England. To balance the colors, in the Kinemacolor system of projection, the predominating color has a black blank substituted for a film image, at intervals, thus cutting out a little of the color to be subdued. 1,155,561. Screen. Issued to J. P. Gilbert, Rochester, N. Y. A theater drop curtain has a projection screen hung hinged upon it. During projection the top of the screen tips forward, but is drawn vertical when the curtain is to be lifted to the loft. 1,156,025. Rewinder. Issued to W. A. Akin, assignor of parts to C. F. Moyer and A. J. Bateman, Falconer, N. Y. Rewinding reels are arranged in a cabinet built beneath the table of the projecting machine. 1,156,824. Intermittent Movement. Issued to Oscar Schwimmer, Los Angeles, Calif. The claw system is used. A Pitman connection draws the claw down. A cam forces the claw into the perforations. 1,156,934. Framing Device. Issued to E. Schneider, New York, N. Y. (Application filed Oct. 22, 1907.) The film shift is upon a frame hinged to the base plate and shifted a % §, ,§ LWaW WE'©e® ®'e©E'®a; by a toothed rack and hand wheel. The claims are limited to the specific mechanism but are of interest because of the early date of filing. 1,158,011. Developer. Issued to C. J. Thatcher, New York, N. Y. A photographic developer consisting of hydroquinone, alkali carbonate and sodium hydrate. 1,158,587. Cinematograph Printer. Issued to J. E. Thornton, London, England. A large drum or wheel, with a circle of lights fixed near it, turns in a closed box. Pulleys and guides conduct film stock and negative to it, clamps on the wheel hold them rigidly, a current of air cools the printing chamber. 1,158.960; 1,158,961; 1,158,962; and 1,158,963. Plastic Products. Issued to W. A. Beatty, assignor to Geo. W. Beadle, New York, N. Y. One of the claims of the last of these patents will serve as an index to the nature of all — "A moving picture film substantially composed of a mixture of cellulose acetate and a condensation product of acetone and phenol in the form of a transparent ribbon and coated with a condensation product of a ketone, a phenol and an aldehyde. 1,159,130. Spliced Film. Issued to J. Tessier, assignor to Lubin Manufacturing Co., Philadelphia, Pa. The joints in the film are made by a narrow lap between two adjacent pictures and a longer lap on the sprocket edges. 1,159,650. Cinematograph Printer. Issued to E. L. Crabb, assignor to The Bell & Howell Co., Chicago, 111. Between the lamp and the film being printed is a sliding frame containing glass plates of different degrees of translucency. This frame is shifted to vary the amount of light admitted to the film. 1,159,731 and 1,159,733. Finding and Focusing Device. Issued to Carl E. Akeley, New York, N. Y. An oblique reflector is moved into place behind the lens to reflect the image to a finder screen, then removed while taking pictures to permit the image to reach the film. 1,159,732. Film Magazine. Issued to Carl E. Akeley, New York, N. Y. The hub is a spiral spring which may be compressed as the film is wound upon it. 1,159,734. Panoramic Device. Issued to Carl E. Akeley, New York, N. Y. The camera is round and is adopted for movement in any direction. Vertical and horizontal toothed arcs and pinion wheels are Left to right: 1,153,163. Projecting apparatus. 1,160,671. Apparatus for printing films. 1,156,025. Film rc-zvinding mechanism.