DE422642C - Removable plate or film cassette - Google Patents

Description

GERMAN EMPIRE

ISSUED DECEMBER 9, 1925

REICH PATENT OFFICE

PATENT LETTERING

CLASS 57a GROUP 17 (C36096 VIl ₅₇ O?)

Contessa-Nettel Λ. G. in Stuttgart Removable plate or film cassette.

Patented in the German Empire on January 27, 1925.

The invention relates to a plate or film change cassette. To with such To be able to use exchangeable cassettes marked individual cassettes or on the rear surface of the film or plate carrier through the rear wall of the interchangeable cassette to be able to observe by means of a viewing opening, according to the invention, the Viewing openings covered by a slider when pulling out the removable drawer.

Fig. Ι shows the interchangeable cassette in a rear view " closed; Fig. 2 the same in the open (pulled out) state, Fig. 3 the Fig. 2 in partial middle longitudinal section

and Fig. 4 a further construction of an interchangeable cassette, also in a * longitudinal section. The outer casing S of the interchangeable cassette has an opening ß ² in the middle of the rear wall a ¹ , which is covered by a light-blocking transparent pane b . The pull-out drawer c also has an opening c ¹ , corresponding to ζμ the opening « ^{2 of} the outer casing ff. A cover slide d, which, as can be seen from Figs. 3 and 4 ^{, when the interchangeable cassette is pulled out, lies over the openings ff 2} , c ^{1 of} the interchangeable cassette housing ff, c , is guided through the cassette support plate e and the cassette spring /. As a result, when pulling out the pull-out drawer c, the cover slide d is carried along by means of its friction on the rear walls ^{2 of} the pull-out drawer c. It finds its abutment at a stop α ³ ao of the rear wall a ¹ , so that it covers the * viewing opening ß ² light-tight, but at the same time also closes the opening c ^{1, which is} located outside the interchangeable cassette housing α, when the pull-out drawer c is pulled out. If the extract charging c again into the interior of the interchangeable cartridge casing pushed α, the sliding cover is d by friction, moved back to its original position, and the sight ports a ² and c ^1, as well as the opening ^s d of the cover slide d come to lie one behind the other ^ so that the cassette previously in the receiving position with its designation (number) becomes visible (see Fig. 1) ·.

Another embodiment of the interchangeable cassette is shown in Fig. 4, in which the cover

JU. /

slide d at its outer end has an approach dS ^{, which causes β 2} , c ¹ to cover both viewing openings β 2, c 1 through a groove c ^{3 of the cover slide.} The effect of the spring / or the support plate e on the cover slide d can be omitted, since when the pull-out drawer c is pushed into the interchangeable cassette housing a, the inner closing part c ^{4 of} the pull-out drawer c hits against the cover slide d at ^{d 2} and then inevitably with it takes himself until he has reached the position in which the viewing openings are opposite. so

Claims (3)

Patent Claims: 1. Plate or film change cartridge for Photographic purposes, characterized in that the viewing openings located in the rear wall when the The removable drawer can be covered by a slider. 2. A replacement cassette as claimed in claim 1, characterized in that the sliding cover (d) by springs (/) or by a cassette-conditioning sheet (s) against the rear wall of the pull-out drawer (c ²⁾ (c) pressed from this entrained by friction, and is limited by stop (rf ⁸ ) in its driving movement. 3. Exchangeable cassette according to claim 1, characterized in that. the sliding cover (d) by a projection (d ¹⁾ of the extract charge (c) entrained is, when inserting the load but by applying an inner edge (c ^l) of the extension charging (c.) the record openings (ff ^2, c ¹⁾ exposing again . /tbb.2 * 'd k' /fii.3