SU22463A1 - A device for reporting a film of intermittent movements - Google Patents

Description

The present invention is intended to notify a film of discontinuous movements relative to a frame window when continuously feeding a film in a projector.

The drawing shows a front view of the device.

The fixed board 1 is equipped with OKOJHKOM 2, corresponding to the frame size. On the side of the window, almost the entire length of the board 1, the gear rack 3 is cut out in the last one. On the board 1, by means of rods 8 and 9, there are fixed couplings 4, 5, 6, 7, in which rods 11, 12, 13 and 14 freely slide A gear rail 17 is attached to the side of the frame 10, the distance between the teeth of which is equal to the distance between the teeth of the rail. 3. In the frame 10, two drums 15, 16 are freely rotated, equipped with pressure rollers 26, 27.

The distance between the reels must be at least two frames high. A gear wheel 18 is tightly attached to the drum 15, and a 16-gear wheel 19 is attached to the drum. Wheels 18 and 19 have teeth only on half of their circles. These wheels are located above the rail 3 in such a way that the teeth of both wheels lie in the teeth of the rail 3. In front of these wheels there is a fixedly mounted, gear rack 28 (in the drawing

only its lower part is shown), the distance between the teeth of which is ravio and the distance between the teeth of the rail 3. The rail 28 with its teeth faces the wheels 18 and 19 and is separated from them at such a distance that when the wheels 18 and 19 turn with their gear side to the rail 28, the teeth of these wheels fit into the teeth of the rail 28. The position of the gear parts of the wheels 18 and 19 relative to the rail 3 is the same.

On axles 20 and 21, fixedly mounted on the board 1, two identical gears 22 and 23 rotate, tightly connected to gears 24 and 25 opposite to the rack 17, gears 24 and 25, opposite gear rack 17, are provided with teeth only on half of its circumference and have with them the same size and the same number of teeth. The half circles of the gear wheels 24 and 25, provided with teeth, are rotated 180 ° relative to each other, so that the teeth of one of the wheels always lie in the teeth of the rail 17, but when the wheel 24 is engaged with the rail 17, the teeth of the wheel 25 are turned in the opposite direction.

The tape is placed by perforation on the teeth of the drums 15 and 16, against which rollers 26, 27 press it. In this case, the tape frame must |; e schie- ,. against window 2. When entering. ia: mecha-

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The tape must have a loop so that the frame 10, along with tension, and the reels 15 and 16 of the tape can move up and down, slipping with their rods 11-14 in sleeves 4-7. To drive the projector, one of the wheels 22 or 23 is rotated, then both of these wheels begin to rotate in opposite directions, and the gears 25 and 24 also rotate in opposite directions. Alternatively, the rake 17 and h; and frame 10, receive a reciprocating motion (up and down). The gears 18, 19, moving together with the frame 10 upwards, engage with the gear rack 3 and make a half turn in a certain direction. Then, coming out of the clutch with the rail 3 and clinging — with the rail 28, the wheels 18, 19 while moving together with the frame 10 downward, make another half a turn in the same direction. Together with the wheels 18, 19, the feed drums 15, 16 rotate evenly. Thus, the speed of movement of the belt moving through the drums 15 and 16 will be equal to the speed of movement of the frame 10, and the direction of movement of the belt will be the opposite of the direction of movement of the frame 10. if the tape moves from top to bottom, then at the same time at the same distance: frame 10 will move at the same time interval, but from bottom to top. In this case, while the frame 10 is moving from bottom to top, the frame of the moving belt will be fixed relative to the window 2, against which it stands.

On the contrary, while the frame 10 is moving from top to bottom, the same frame will pass by window 2 at double speed. Thus, when the wheels 2, 3 rotate, past the window 2 frames of the film will pass, and the latter’s movement relative to the window 2 will be intermittent: the stops will be replaced by double speed, despite the movement of the tape relative to the board 1 continuous.

The subject matter of the invention.

Adapting messages to the film with intermittent movements relative to the personnel window when continuously feeding the movie film into a film projector, characterized in that it consists of a frame 10 with freely rotating feed drums 15 and 16 fixed in it and pressure rollers 26, 27 equipped with a personnel window 2 and guiding rods 11-14, passing through the fixed couplings 4-7, to communicate which frame the vertical, reciprocating movements are the toothed racks 3, alternately engaging with the gears 18 and 19, located between these slats and fitted with teeth only on half of their circumference, and a gear rack 17, engaging with the same gear wheels 24 and 25, which are driven by the gear wheels 22 and 23, mounted on axles 20 and 21. to the author's certificate of DI Popov No. 22463