Exhibitors Herald and Moving Picture World (Oct-Dec 1928)

December 22, 1928 EXHIBITORS HERALD and MOVING PICTURE WORLD 71 1.691.293. MUSICAL-SOUND-PRODUCING INSTRUMENT. Frederick B. Little. Chicago. 111., assignor to J. C. Deagan, Inc., Chicago, 111., a Corporation of Illinois. Filed Oct. 17, 1927. Serial No. 226,745. 1 Claim. (CI. 84 — 107.) 1,691,419. MOTOR ATTACHMENT FOR MOTION-PICTURE CAMERAS. Theodore A. Wttlarri, Cleveland Heights, Ohio. Filed Feb. 10. 1923. Serial No. 618.261. 2 Claims. (CI. 88—17). 1. In combination with a motion picture camera having a shaft to which an operating crank is adapted to be applied, a him feeding motor attachment comprising a housing detachably secured to the camera, a gyroscopic electric motor carried within said housing, a shaft mounted on said housing, gearing at one end of said shaft cooperating with the shaft of the crank, and reduction gearing between the other end of the shaft and the motor. Leigh Hunt, Chicago, III., assignor to Oro-Tone Company, Chicago, 111., a Corporation of Illinois. Filed July 2, 1926. Serial No. 120,006. 7 Claims. (CI. 181—27.) 6. Sound control construction comprising an amplifying chamber having an open side, a throat passage entering the side opposite the open side, and a reflecting member positioned in the chamber opposite the throat, said reflecting member having a ridge extending across the face opposite the throat, said ridge serving to divide the sound, the throat member having notches in its edge whereby the ridge on the reflecting member may extend into the throat The combination with an elongated sound producing bar; of a hammer mounted upon one side of said bar and operable to strike the bar to set it into vibration ; a sound dampener bearing against the upper end of the bar and whose weight is borne by the bar ; a solenoid including one element in the form of a yellow energizing winding and another element in the form of a magnetizable core received in the interior of said winding, the winding being normally station ary and the core being movable and coupled with the dampener; and a mounting for the electromagnet winding and bar and upon which this electromagnet element and bar are adjustable toward and from the hammer. 1.690,633. MOTION-PICTURE PROJECTOR. Newton B. Green, Rochester, N. Y., assignor to Eastman Kodak Company, Rochester, N*. Y., a Corporation of New York. Filed Aug. 15, 1925. Serial No. 50,444. 2 Claims. (CI. 88—17.) 1. In a motion picture projector, a gate, a first shutter having a normal position in registration with the gate, a lamphouse adapted to illuminate the gate and hinged to swing to an inoperative position, a member connected to the shutter, a cam connected to the lamphouse and operative to engage said member and move said shutter out of registration with the gate as the lamphouse is swung, and a second shutter having a normal position out of registration with the gate and having a member adapted to engage and move said first named member whereby the second shutter may be actuated to be moved into registration with the gate and the first shutter may be thereby moved out of registration with the gate. 1,695,045. COLOR PHOTOGRAPHY AND THE LIKE. Aron Hamburger, London, England. Filed Mar. 5, 1923, Serial No. 623,020, and in Great Britain Mar. 7, 1922. 31 Claims. (CI. 95—1. 1. A transparent base having on one side a single film continuous tone positive image corresponding substantially to yellow and red sensations and on the other a single film continuous tone positive image corresponding substantially to green and blue-green sensations of the same object. 1,690,364. MEANS FOR FOCUSING LIGHT SOURCES IN PROJECTORS. Edward A. Everett, New York, N. Y. Filed June 18, 1926. Serial No. 116,959. 3 Claims. (CI. 240 — 44.) 1. In a focusing sight for a projector, the combination, a housing having a projecting lens, a lamp bulb having a filament and a sighting tube centered on the axial line of said projecting lens, said sighting tube comprising a screen with cross-hairs for locating said axial line and a sighting lens at one end located in fixed relation to the focal point of said projecting lens and a sight at the opposite end of said tube, the position of said filament relative to said focal point being determined by the definition of the filament on said screen when sighted through said tube. 1,686,539. DUPLICATING OR PRINTING APPARATUS AND PARTICULARLY PHOTOGRAPHIC STEP-AND-REPEAT CONTACTPRINTING APPARATUS. Robert Harris, London, England, assignor of one-half to Pictorial Machinery Limited, London, England, a British Company. Filed June 10, 1927. Serial No. 197,790, and in Great Britain Aug. 11, 1926. 8 Claims. (CI. 95—73.) 1. In apparatus of the character described, the combination of a framework having two independent tracks lying transversely one of the other, a supporting device for a printing member mounted to reciprocate on one of said tracks, a unit-holding device for carrying a unit mounted to reciprocate on the other of said tracks, a fine-adjustment stop adjustable in the direction of length of one of said tracks, resilient driving mechanism arranged to drive the device on the latter track up to and hold it resiliently against said stop, locking means for locking the latter device temporarily in its position of adjustment against said stop, and a second driving mechanism distinct from said resilient driving mechanism and mounted independently thereof in association with the other track and arranged to drive the device on the latter. I