DE1061616B - Multipurpose projection device - Google Patents

Description

GERMAN

The invention relates to a multipurpose projection device, in particular for narrow films, and The aim is to create a device that can be used both for projecting and for editing the film suitable. Until now, each of these tasks required a separate device. Film testing devices already exist with an optical device for projection, but the image is only on one Projected a ground glass placed in front of the examiner; however, such a device is for demonstration of a film completely unsuitable.

According to the invention, the set object is achieved in such a way that 'the. Device for simultaneous use known per se both as a projection device and as a processing device for the film tape Arranged horizontally as well as the entire projection device on the one in the projection direction Facing the rear of the device facing the operator is installed, with the film tape lying flat via a film guide facing the operator and open towards the rear between the condenser and the lens of the projection device is passed parallel to the rear of the device.

By means of the measures outlined, a device is achieved that, despite its usability both as a projector and as a processing device, its structure is not more complicated than that previously known projection devices.

Some of the measures specified in the solution are known per se in a different context. There is already a projection device in the form of a lying suitcase. Also will the tape of film testers and standing cabinet projectors lying flat parallel to the back of the device moved by a guide. However, these measures are not in themselves a solution The task at hand and cannot be used as a guide.

The new multi-purpose projection device can be developed in such a way that one on the device The rear of the device is connected to the pulpit for receiving the lens system and for attaching a Diet device is arranged. In this simple way, the device can also be used "for showing still pictures be used.

Due to the horizontal design of the multi-purpose projection device, it is easily possible that To accommodate the device in a case, which again has the advantage to be achieved in a simple manner, that the cover of the suitcase, which can be folded forward, serves as a viewing screen for the operator. It is So it is not necessary to provide a ground glass or similar facilities for the operator, as long as the device used to process the film.

Multipurpose projection device

Applicant:

Niezoldi & Krämer GmbH,
Cine film factory,
Munich 38, Hirschgartenallee 35-37

Georg Niezoldi and Josef Fürst, Munich,
have been named as inventors

is pulled. Although it is known in a projection device, the lid of the device case at the same time as To train projection screen for the audience. In the present case, however, in a simple way and way already existing and necessary parts are designed so that the multi-purpose projection device can serve both tasks at the same time. So here the lid of the suitcase is not for them Viewer, but intended for the operator as a projection screen while the film is being edited.

A further simplification of the device can be done in that the device is used to transport the Films is equipped with both a motor and a manual drive. Also such a measure is already known in projection devices. However, such a training offers in the present case when used as a processing device, completely different and advantageous options than with one pure projection device, because the manual drive makes checking the film on an extraordinary level simple way and wöise possible.

Finally, according to the invention, it is advantageous if the electrical device is included in the device Low voltage transformer and a piano keyboard serving as a switch is built in.

In the case of a motion picture viewer, it is already known to use a transformer for generating low voltage to be installed in order to be able to use a point source of illumination. With the new one However, the multi-purpose proj ection device is also dangerous due to the low voltage supply a contact closure eliminated when using the projector as a processing device as a result of constant taking out and back in

909 577/137

Claims (5)

laying of the film tape is given. In addition, the device is now also used to edit the film z. B. can be used in motor vehicles. Finally, the low voltage is also a prerequisite for the switching device of the device to be designed as a piano keyboard, because such piano keyboards have too high a burn-up at the otherwise usual mains voltages and therefore have a short service life. On the other hand, the piano keyboard enables very simple and quick operation, which Avas is of particular advantage when editing the film. The drawing shows schematically an example of the subject matter of the invention in FIG. 1 in a rear view, in FIG. 2 in a top view and in FIG. 3 in a vertical section. The new device has a horizontal housing 1 in which all of the main parts of the projection device are relocated and superimposed on the rear side, from which it is operated, while the motor 2 with the transformer 3 is housed in the front housing part. The projection device consists (see. Fig. 3) in a manner known per se from the lamp 4, which is arranged with its underlying reflector 5 directly above the housing bottom and due to the low voltage of a few volts achieved by the transformer 3 as a small spherical lamp sufficient wattage can be formed. In accordance with this, both the reflector 5 and the condenser 6 located above the lamp have a small diameter. Above the condenser 6, the cover plate 7 is mounted horizontally with the likewise horizontally operating gripper 8, which transports the film strip 9. This is also guided horizontally via a support 10 parallel to the rear of the device, which is freely accessible, so that the device operator can remove the tape 9 with a handle and insert it again just as easily and quickly if, for. B. cut out a picture and the film strip must be glued again. In order to comfortably carry out such work, a cutting and gluing press can be attached to the operator's place, namely directly on the rear of the device, possibly even on the base plate of the same (not shown). Immediately above the film strip 9, the lens system 11 is built up vertically, which projects the images from the pulpit 1 'of the housing 1 in the usual way onto a vertical screen. While the film is being processed, it is advantageous to use the cover 12 of the device case as a screen for the operator, as indicated in FIG. 3. As indicated in phantom in FIGS. 2 and 4, the pulpit 1 'of the housing can be fitted with a diet device 16 which, despite its known length, hardly protrudes beyond the housing 1. The low voltage not only enables the use of small spherical lamps, but also simplifies the entire circuit and operation by installing a piano keyboard 13 instead of the individual switches that were previously used. This keyboard can e.g. B. be composed of five buttons, which are located, for example, at the bottom of the rear wall of the housing 1 in a convenient tactile position to control the switching on and off of the motor, the lamp, the film transport, the return of the film tape, the speed of the same, etc. to regulate . Finally, the low voltage allows the device to be connected to the battery of a motor vehicle, in which case the transformer is switched off. For this purpose, the motor 2 is set up for both alternating and direct current. As is known, the film reels 14 are mounted on arms 15 on both sides of the housing 1 and can be removed or swiveled in for transporting the device, as indicated in FIG. In addition to the motor drive, a manual drive can also be provided (not shown) in order to optionally control the sequence of the film, in particular during processing. Patent claims: 1. Lying to be arranged, to be operated from the rear projection device, especially for narrow films, characterized in that the main parts of the projection device such as lamp (4), reflector (5), condenser (6), lens system (11) with a horizontally working in between Transport (8) and the horizontally passed film tape (9) together with its freely accessible guide (10) are arranged one above the other and on the side facing the operator. 2. Projection device according to claim 1, characterized in that the cover (12) of the device case is designed at the same time as a projection screen. 3. Projection device according to claims 1 and 2, characterized in that the device can optionally be operated with a motor or manual drive. 4. Projection device according to claims 1 to 3, characterized in that the housing (1) has a pulpit (1 ') for receiving the lens system (11) and for attaching a slide device (16) . 5. Projection device according to claims 1 to 4, characterized in that the electrical Device is combined with a known transformer and by a piano keyboard is switched. Considered publications:
German patent specifications No. 864 058, 382 208, 945, 831 636; Swiss Patent No. 132 336;
Brochure: »16 mm horizontal sound projector Unitas H 2 "from Lytax-Werke-Freiburg. 1 sheet of drawings © 909 577/137 7.59