DE1983923U - REWIND DEVICE FOR REWINDING FILMS IN FILM CASSETTES. - Google Patents

Description

The present innovation is a rewinding device for rewinding films in Super 8 film cassettes,

As is well known, Super 8 film cassettes basically consist of two cassette halves separated by a wall, whereby the unexposed filmstriefs from the one cartridge chamber by ingenious guidance on the lens of the Camera passed into the other cassette chamber and is wound up there.

A mechanical locking device, which for example consists of an annular cam backstop, is prevents the winding of what has already been exposed

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Film strip loosens.

However, there are now cases conceivable where those skilled in the art of double exposure may find the Have a wish, including those already exposed. Super 8 movies to expose a second time. As a result of the backstop just mentioned, however, the whole thing is rewound or part of the exposed filmstrip does not possible.

The new, enjoyable rewinding device solves this Problem.

The essence of this innovation is explained in detail below with reference to FIGS. 1 to h.

Thereafter, this rewinding device consists of a container 1 _>; which is used to hold a Super 8 film cassette. The essential feature of the new rewinding device is now a rotating device 2 which engages in the cassette winding axis via a pin 3.

By actuating the rotating device, for example by By rotating the disk 2a, the winding axis of the spool on the cassette side for the film to be exposed can be turned back or an existing friction or backstop is loosened or unlocked. The one wound onto the take-up core In this way, film material is loosened and released for backwashing.

On the side of the rewinding device according to the invention, on which the film opening of the cassette is located, a gear wheel k or a filrate transport gripper is attached. The teeth or the tooth engages in the film perforation and transports the film back into the chamber for the film strip to be exposed when the gear k is turned or the film transport gripper is actuated. "

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The new rewinding device can be used in a separate container as well as in the film camera ' be built in by yourself.

According to a preferred embodiment, with the

Rewinding gear h or the film transport gripper a

Frame and meter counter 5 be connected, which shows the length of the rewound film.

Ira particular, the accompanying figures show 1 to h: A side view of the closed Itückspulvorrichtung with the lid 6 with locking and unlocking device 7 (Figure 1).

The illustration in FIG. 1 with the cover 6 open; you can see the item lids opposite in the middle area Side wall la of the container 1 part of the rotating device, namely one close to a circular Opening of the cover wall la seated © circular Disc 2b with pin protruding into the interior of the container 3, the circulation by a friction or backstop, preferably an annular cam backstop of the Super 8 film cassette inserted in the container 1 overcomes. (Figure 2.) Preferably the pin 3 is in itself telescopically sprung to prevent jamming when inserting the

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FIG. 3 is a section on the plane I-I of FIG. FIG. 4 shows the rewinding device according to the invention ■ from the opposite of Figure 1 to. 180 turned long side. The arrangement of the disk 2a, which is one axis, can be seen 2c, which in turn serves as a warehouse Bar 7 rests and rii * the pin 3 having in one piece Disc 2b is connected. '.

If the rewind device according to the innovation is not in a film camera is built in, but represents a separate device, backwashing of any one takes place Part or all of the Super 8 film in such a way that the Super

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8 film cassette removed from the film camera into the Container of the rewinding device used and then the backwash in the described above Manner is carried out.

Claims (5)

RA. 733 849 * 12/27/87 - sheet 5 - claims for protection 1.) Rewinding device for rewinding films in film cassettes, characterized in that it consists of an openable and closable container (1), which has a rotating device (2) which is capable of a to loosen or unlock existing friction or backstop, as well as an externally operated one Film transport device (^ i) has. 2.) rewinding device according to claim 1, characterized in that the rotating device consists of a disc (2b) seated on a circular opening in the container wall with an inwardly directed eccentrically arranged pin (3) _; a connecting axis 2c and a turntable or a rotary knob (2a) "ordered. 3.) rewinding device according to claim 1 or 2, characterized characterized in that the rotating device (2) in one Bar (7), which is integrally connected to the outside of a container wall, is mounted. · ■ 4.) after rewinding Anspulvorrichtung according to claim 1 to 3, characterized in that the film transport means ⁽¹ O from a gear wheel or a film transport · consists claw. 5.) rewinding device according to claim 1 to 4, characterized characterized in that a frame and meter counter 5 is connected to the film transport device.