Motography (Apr-Dec 1911)

184 MOTOGRAPHY Vol. VI, No. 4. one of its movements of reciprocation in unison with the movement of the film in a line parallel with the path of movement of the film. 3. In a moving picture machine, a lens, means for imparting a continuous movement to a film, a reflector, means for reciprocating said reflector with one of its movements of reciprocation in unison with the movement of the film, and means for maintaining a constant distance between the lens and said reflector. 4. In a moving picture machine, a lens, means for imparting a continuous movement to a film, a single fixed reflector, a movable reflector, means for intermittently moving the movable 994,276. reflector in unison with the film away from the fixed reflector in a line parallel with the path of movement of the film, and means for maintaining a constant distance between the lens and the movable reflector. 5. In a moving picture machine, a stationary reflector, a movable reflector arranged to be reciprocated toward and away from the stationary reflector, a lens arranged to be reciprocated toward and away from the stationary reflector and means for reciprocating the movable reflector and the lens. No. 994,044. Film Holding Device for Feed Magazines. Charles R. Uebelmesser, New York, N. Y., assignor to American Moving Picture Machine Company, of same place. The invention is a device for centering a hank or ring of film in magazine which feeds from a reel of film without rewinding the film after taking it from the take-up magazine. A large number of rollers on radial arms are provided, and these act together toward the center of the feed magazine to center the loose roll of film. No. 994,276. Attachment for Projecting Daylight Pictures. Frederick J. Reilly, New York, N. Y. In projecting an image upon a screen from the back, the image being visible by light passing through the screen, it is possible to leave the auditorium comparatively light if the screen be shaded from direct rays, and if the projecting lamp be protected from leaking rays into the auditorium. Mr. Reilly provides a collapsible screen which' extends from the projecting lantern to the picture screen, thus effecting the desired ends. He describes his invention as particularly suitable for lecture rooms, and as adapted for the projection of either fixed pictures or moving pictures. No. 995,061. Combined Shutter and Intermittent Film Moving Mechanism. Victor L. Duhem, Fruitvale, Cal. The intermittent mechanism is of the claw, or "pin" type, in which pins are advanced into the sprocket holes of the film and then the pins are moved to move the film, no intermittent sprockets being used. In Mr. Duhem's device, the pins are moved by a cam plate, the cam plate being so designed that it acts also as a shutter. By this combination of parts, it will be seen that the shutter cannot be out of phase with the intermittent motion of the film ; hence the shutter is self-adjusting, or the equivalent. No. 995,551. Intermittent Mechanism. Thaddeus A. Nolan, Cincinnati, Ohio. In the drawings, I represents parallel guide rods mounted in a stationary frame 2, a driven shaft journaled in fixed bearings and provided with an elongated spur gear j. A movable frame 4 vertically adjustable on the guide rods 1 carries a vertical shaft 5 which is provided with a pinion 6 in continuous engagement with gear 3 for framing. A transverse shaft 7 journaled in frame 4 is driven from shaft 5 by means of miter gear connections 8 therewith, and a shaft 9 journaled parallel with shaft 7 is driven by means of spur gear connections // therewith. A shaft 12 provided with sprocket wheels 1? for engagement with the usual film is journaled in the frame 4 parallel to shaft 9. A drum 14 mounted to turn on shaft 12 and yieldingly connected thereto by means of a spiral spring 15 is rotated in the ratio of four to one with shaft 9 by means of spur gear connections 16 therewith. A disk il secured on shaft 0 is formed with a segmental guard rim 18 on one of its faces and with a stud 21 projecting from said disk at an intermediate point in the gap 22 formed between the ends of the rim 18. A multiple stop 23 secured on shaft 12 is formed with preferably four open radial slots 24 adapted to movably engage with the stud 21 on disk i7. Said stop is also formed with intervening concave seats 25 in its periphery between adjacent slots 24 for movably engaging with the convex face of the guard rim 18. In operation, the multiple stop is yieldingly maintained by means of the spiral spring with one of its seats in contact with the guard rim during a three 99.5,061. fourths or other predetermined partial rotation of the disk and until the stud enters one of the radial slots. The movable engagement of the stud in the radial slot prevents the action of the spiral spring from turning the stop too fast for the proper engagement of its succeeding seat into movable engagement with the forward portion of the guard rim. In this manner the stop together with shaft 12 and the sprocket wheels