MOVABLE STAGE FOR PHOTOGRAPHING SCENES WITH THE “MUTOGRAPH.”
“CINEMATOGRAPH” CAMERA.
The “cinematograph” camera, invented by the Messrs. Lumière & Sons, works on a somewhat different principle from those we have already described. In this camera the film is carried forward intermittently, no sprocket wheel being used. The film-moving mechanism is fully illustrated in [Figs. 1 and 3].
FIGS. 1, 2, AND 3.—FILM-MOVING MECHANISM.
The film-moving device consists of two prongs which somewhat resemble a fork. It is shown at D in [Fig. 3]. The prongs are alternately pushed through or withdrawn from the perforated ribbon by the aid of a rotating bar, C. The film-moving device, D, has really a shuttle movement, having a rapid reciprocating motion. The rotating bar, C, which is secured to the main shaft, is so arranged that its ends, which are bent in opposite directions, strike on alternate sides of the wedge-shaped piece which is secured to the fork, D, and thus impart to the latter a reciprocating motion. The up-and-down motion of the film is accomplished by the aid of a cam which is secured to the main shaft. The reciprocating yoke piece, A, is given a vertical motion when the crank shaft is rotated. The arm, B, is attached to the yoke piece, A, and this carries down the film through the medium of the fork, D. When the film has been lowered the distance of one exposure, the rotating bar, C, strikes the fork and removes the prongs from the film. The yoke piece then raises the prongs, and the other arm of the rotating bar strikes the wedge-shaped piece, and forces the fork, D, through the apertures in the film. On the main shaft is also arranged the shutter, E, which rotates with the film-moving mechanism. [Fig. 2] shows the simplicity of the camera. On the upper end of the box is the sensitized ribbon, which passes downward between guides before the lens opening. The bent ends of the cam operating bar, which give the fork, D, its reciprocating motion, are shown in Fig. 3. Fig. 4 is a general view of the instrument, showing the driving gear and film support. Fig. 5 shows the cinematograph camera in operation. It will be seen that the camera is very portable. The same camera can be converted into a projecting apparatus for throwing moving pictures upon the screen. The images are about an inch square.