SU35558A1 - Projector for reading books, etc., reproduced on film - Google Patents

Description

This HaoGpejeHHe represents a further development of the projector for reading books, etc., reproduced on film (see Certificate of Authors No. 32299). Unlike the original version of the projector, which used a conventional film for reproduction of a printed original, this option is designed for using copies on rolls of bromine-silver paper. In addition, there is an adapted, used to obtain photocopies (extracts) from the readable text | a.

In FIG. 1 depicts the proposed version of the projector in section; FIG. 2 - a device for the production of photographic; FIG. 3 is the same fixture in front.

In this version of the projector, the transporting toothed drums are replaced by two pairs of friction rollers 1 to allow bromide-paper paper 2 to pass between them. The rollers 1 are mounted on the back wall of the optional console 3, into the front wall of which the objec 4 is inserted with a wrapping prism 5. The entire

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the apparatus is mounted on a tripod with a rod in the same way as in the original version.

For cases when it is required to make selections of text, figures, or numerical tables from a readable book, the projector can be equipped with an additional device (Fig. 2 and 3), which is a cassette with two rollers 7, which are wound with the help of a handle 8, a roll of bromo-silver Noah paper 9. The cassette is closed on top with two Scroll 10, optionally sliding apart on the opposite sides by an arbitrary amount.

The cassette is installed in the frame of the projector tripod so that a sharp image of the whole page of the book is obtained on the surface of the closed curtains 10. Then the lens 4 of the projector is closed with a yellow light filter, and the cassette shutters 10 are moved apart so that a piece of text, illustrations, etc. are needed between their edges. After that, the necessary exposure is performed and the light filter is removed from the lens. After exposure, the filter is put on again; on the free edge of one of LUTopOK 10, corresponding to the end of the statement, draw a line on paper. Then look for the next place you HC “Mff again pushing the curtains 10 according to the size of this place. Using one of the handles 8, the roll is rewound so that the drawn partee pencil line falls on the upper edge of the new discharge. Thereafter . make the next exposure, etc.

The subject matter of the invention.

1. Modification of the projector according to the author's certificate No. 32299, characterized in that, in order to use, instead of films, a roll of bromide-silver paper of the corresponding width, it is equipped with two pairs of friction rollers G, to pass between them (hem bromide-silver. rollers Attached to the back wall of the lighting console 3, in the front wall of which the lens 4 is inserted with a wrapping prism 5 (Fig. 1).

2. When using the projector according to the author's certificate No. 32299, use when photographing extracts from readable films from photographic films and consisting of a cassette with rollers 8 for rolls of bromide-silver paper and two sliding shutters 10 (Fig. 2 and 3).

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