Exhibitors Herald World (Oct-Dec 1929)

October 26, 1929 EXHIBITORS HERALD-WORLD 139 NEW INVENTIONS The list of patents published in this department is furnished by the patent reporter of Better Theatres — . WILLIAM N. MOORE Washington, D. C. 1,727,809. STOPPING MECHANISM FOR RECORD-CONTROLLED MUSICAL INSTRUMENTS. Tolbert F. Cheek, New York, N. Y., assignor, by mesne assignments, to Welte-Mignon Corporation, New York, N. Y., a Corporation of Delaware. Filed Jan. 29, 1924. Serial No. 689,339. 16 Claims. (CI. 84—123.) 1,729,163. ILLUMINATED COLOR CHANGER FOR SPOT AND FLOOD LIGHTS. Willis Stewart Drew, Lankcrshim, Calif. Fi.ed June 29, 1927. Serial No. 202,316. 12 Claims. (CI. 240—3.) In a record controlled player mechanism for musical instruments, having a circuit closing switch and a cut-off valve, the combination with said switch and valve, of means to hold the switch in circuit closing position and means having connection with said valve and switch-holding means and operative under the control of a record to cause the valve to close and the switchholding means to be released from the switch to permit the latter to open the circuit. 1,726,546. APPARATUS FOR MAKING PHONOGRAPH RECORDS. Frank L. Dyer, Montclair, N. J. Filed Oct. 19, 1927. Serial No. 227,191. 7 Claims. (CI. 179—100.1) An apparatus for recording sounds of long duration comprising in combination, two turntables for receiving alternately successive records each representing a fraction of the sounds to be recorded, an electrical pick-up mechanism cooperating with the record on each of said turntables, whereby the sounds recorded on said records will be converted into telephone currents, a third turntable rotating at a substantially reduced speed, a micro-blank thereon, magnetic recording mechanism operated by the telephone currents for forming a groove in said micro-blank, and means for thcrmionically amplifying the telephone currents located between the magnetic recording mechanism and said pick-up devices, said amplifying means being common to both pick-up devices, substantially as set forth. A color changer comprising in combination a casing, a plurclity of screens of different colors slidably mounted therein, and means carried by said casing and opcratable from opposite sides of the casing on the outside thereof to selectively slide any screen optionally to or from operative position. 1,728,110. MEANS FOR INDICATING EMPTY SEATS IN THEATRES. John A. Dienelt, Alexandria, Va. Filed Oct. 31, 1928. Serial No. 316,182. 4 Claims. (CI. 177—311.) In combination with rows of seats in a theatre or other building, a circuit maker and breaker device associated with each seat, means whereby the device is moved to circuit breaking position when the seat is occupied, a group of l.~imps, a circuit for each lamp which includes the circuit breaker of each chair whereby each lamp is lighted when the seat is unoccupied, but the circuit to each lamp is broken when the seat is occupied «nd means associated with each seat and operated by the occupant of the seat when he stands up, for breaking the circuit of each lamp. 1,729,427. SYNCHRONIZING MEANS FOR MOVING PICTURE AND TALKING MACHINES. Louis Kovacs, Throop, Pa. Filed Mar. 10, 1927. Serial No. 174,187. 2 Claims. (CI. 74—7.) The combination with a driven member, of a shaft firmly connected with said driven member, a disc member rotatively mounted on the shaft, a ring member attached to the disc for driving a second member, and formed with sprocket teeth, said ring member being provided with a frustum conical portion, a cone member keyed to the shaft and slidably mounted and capable of frictionally engaging the frustum conical portion, means for normally urging these parts into engagement, a crank connected with the shaft, and an extended portion thereon abuttable against the cone member upon depression of the crank to disengage the cone member from the conical portion so as to permit the sprocket chain to stand still so as to synchronize the driven member therewith. 1,727,900. OPTICAL PROJECTION DEVICE. Willi, m L. Patterson, Rochester, N. Y., assignor to Bausch & Lomb Optical Company, Rochester, N. Y., a Corporation of New York. Filed Jan. 30, 1926. Serial No. 84,870. 5 Claims. (CI. 88—28.) A projection device comprising a casing having a removable side wall, projection mechanism carried within the casing and having supports for a film strip carried by the side wall opposite the removable wall, and operating means for said projection mechanism for feeding the film strip through projecting positions, said operating means including a plurality of operating elements extending through the removable side wall, one of said elements being movable relative to the other for framing the film. 17,443. INTERMITTENT GEARING FOR MOTION-PICTURE APPARATUS. Ralph Pulliam De Vault, Chicago, 111., assignor, by mesne assignments, to Acme Motion Picture Projector Company, Chicago, III., a Corporation of Illinois. Filed July 18, 1922. Serial No. 575,825. Original No. 1,355,543, dated Oct. 12, 1920. Serial No. 298,613, filed May 19, 1919. 9 Ciaims. (CI. 74— 41.) In a structure of the class described, the combination with a film sprocket, of a driving means therefor comprising a driving wheel provided with a driving pin having a cylindrical body portion and a segmental extension provided with a flat inner face, and a coacting driven wheel provided w.'th radially disposed slots having inner portions with which the body portion of said driving pin coacts to actuate the wheel and outer portions of a width less than the diameter of the body portion of the said pin coacting with said pin extension, said outer portions of said slots having flat outwardly diverging surfaces at the entrance thereof with which the flat surface of said pin extension coacts as the pin passes into and from the slots, said driven wheel having concave surfaces between its said slots, said driving wheel having a cylindrical cam coacting with said concave surfaces of said driven wheel with a recess therein at the pin, permitting the actuation of the driven wheel by the pin.