Motography (Jan-Jun 1915)

870 MOTOGRAPHY Vol. XIII, No. 22. chine. In the talking machine, a commutator governs the impulses sent to the projector. 1,084,217. Reel Hub. P. LT. Mascher, East Palestine, Ohio. The clamp for attaching the end of the film to the hub is set to hold itself normally open, but may be closed to clamp the film and then released that it may open to release the end when the film is unwound. 1,084,651. Safety Attachment. John McFeely, Indianapolis, Ind., assignor of parts to M. E. Petty and H. E. Petty, Chicago, 111. The lower sprocket is driven by the film and carries a centrifugal switch holding open an emergency electrical circuit. Should the film break, the sprocket will stop, the emergency circuit will close and the switch will open the main power circuit and kill both the motor and the lamp at once. The claims are upon the fundamental principles. 1,085,392. Projector. L. C. Van Riper, assignor to Vanoscope Co., New York, N. Y. The film moves steadily, and moving mirrors between film and lens compensate for the movement of the film, to produce a stationary picture on the screen. The film is guided in a curved path to keep constant the distance between the film and the mirror. 1,086,376. Perforator. D. C. Law, assignor to American Artograph Co., Philadelphia, Pa. The motion picture camera perforates the film while the exposure is being made; the claims of the patent read upon the specific mechanical construction. 1,087,129. Shutter Adjustment. F. H. May, assignor to New Jersey Patent Co., West Orange, N. J. A comparatively large hub is firmly attached to the shutter shaft, and the shutter is more readily adjusted upon this hub than directly upon the smaller diameter of the shaft. 1,087,699. Safety Attachment. Anton Szeliga, New York, N. Y., assignor of parts to P. Muller, E. Mauthberger and F. Tichy, New York, N. Y. A knife is arranged with a spring to cut the film at the magazine opening. An inflammable member near the film window releases the knife if the film in the window should blaze. 1,087,996. Camera Magazine. J. Tessier, assignor to Lubin Manufacturing Co., Philadelphia, Pa. An improved device for attaching magazines to a camera; the magazines are placed Fig. 1,087 adjacent to each other on the top of the camera and are clamped to the camera box by undercut slides and clamps. 1,088,365. Feed Mechanism. Nicholas Power, Brooklyn, N. Y. The lower steady-feed sprocket is substituted by two sprockets geared together, but with slight adjustments, the film Fig. 1,088,365 strip passing over both of them, and both of them operating to pull upon the film, whereby the pull upon any one sprocket hole is reduced. 1,088,364. Intermittent Mechanism. Nicholas Power, Brooklyn, N. Y. A modification of the Power intermittent device. The locking cam is outside the starwheel so that for the same diameter of cam the speed of passing the starwheel is greater. A notch in the locking cam unlocks the star and at the same time a diamond-shaped cam carried by the locking element rotates the star to shift the film. 1,088,806. Motion-Head House. J. A. Cameron, New York, N. Y. The motion-head mechanism is built upon the front Fig. 1, and one side wall of the enclosing house, and the remaining side and back walls open as a door, giving full access to the mechanism for inspection and repair. 1,089,219. Projection System. J. U. Houseman, Chicago, 111., assignor of part to J. S. Moe, Chicago, 111. To reduce the flicker of the screen, a faint auxiliary light is thrown upon the screen during the dark interval of picture shift, a double shutter acting to cut off the auxiliary light tiuring the interval of picture projection. 1,089,466. Safety Attachment. F. H. Frude, Chicago, 111., assignor of part to S. I. Levin, Chicago, 111. A sprocket is Fig. 1, driven by the film and controls a switch to open the motor circuit should the film break and the sprocket stop. 1,089,646. Camera. C. F. Jenkins, Washington, D. C. The film moves steadily; the lens and film guide move together while the shutter is open. Battleship "Florida" Uses Power's The United States Battleship Florida, one of the largest of the North Atlantic squadron now anchored in the North river for a ten days' celebration, is equipped with a Power's moving picture projecting machine and during the electrical display at night, this machine is used as a searchlight to throw its powerful rays on the United States flag, thus dispensing with a regular searchlight which can be used for other purposes.