DE420301C - Record holder made of paper - Google Patents

Description

GERMAN EMPIRE

ISSUED ON
21.0KT0BER1925

REICH PATENT OFFICE

PATENT LETTERING

- JVi 420301 CLASS 57a GROUP

(G 62154 ^VI l57 ^al )

Rudolf Goerges in Magdeburg.

Record holder made of paper. Patented in the German Empire on September 9, 1924.

Plate holders made of paper, that is to say of low weight, are already known. Your attachment on the camera, however, requires a certain execution of the same, what hinders their use.

The distinguishing features of the invention are the type of panel mounting and in the intended use as a cassette insert for the use of smaller plate formats. As such, compared to known designs, it is light weight and the avoidance of any mechanical Aids, such as springs, sash turnbuckles, etc., still have an advantage in that they are less Takes time, the attachment to the cassette bottom does not depend on its size and enables the use of different plate formats.

The plate holder consists essentially of two parts I and II, which can be pushed into one another fix the plate (fig. 3 and 5).

The plate holder is attached to the bottom of the cassette independent of the size of the cassette by gluing part I to the two end points xx ' (Fig. 3), in which way inaccuracies in the commercially available cassette material are rendered ineffective. This gives the plate a more precise central position due to the elimination of one of the two sources of error which result from the known individual fastening of holder and plate.

While with the cassette open (Fig. 5) the frictional resistance between the sliding Part II and the fixed part I are sufficient to secure the panel position, he learns when closing (Fig. 7) with assistance des. Deck slide a considerable increase, which in conjunction with an automatic locking Part II ensures a safe position of the plate in the end position even in the event of strong vibrations.

The plate is inserted into the holder after Part I has been attached to the cassette base in the manner described above by inserting its narrow side at an angle into the pocket-like cutout of Part II (Fig. 1), which determines its lateral position. In doing so, it strikes against parts of a fold α that have remained standing and is thus delimited on one side of the longitudinal direction. By moving part 11 upwards with the thumb and forefinger at the appropriate points of attack yy ' (Fig. 5), the plate hits a cardboard strip b (Fig. 1) that is firmly connected to part I, which takes over the delimitation on the other side of the longitudinal direction and thus gives the plate the position that corresponds to the position of use (Fig. 5). A double slot guide cc ' hereby enables the moving part II to be displaced along the part I fastened to the cassette base (Fig. 1). To secure against falling out of the plate, overlapping parts of the pocket-like cutout on the lower narrow side, as well as a paper strip d connected to the strip b , which lies against the plate from above, are used. I.

The paper strip d has a swell at the top! B-tail-shaped extension, which is connected to a bridge with a tongue e. ! The movable part II remains ^thereby: only so much freedom of movement upwards and ^at bottom, as is necessary for fixing the plate. In this way, the: sharp paper edges of the slot guides' cc ' do not come into contact with the glue joints at the two attachment points Xx' (Fig. 3), which prevents the insert from becoming detached from the cassette base.

When the cassette is subsequently closed (Fig. 7), the cassette lid presses from above against the cardboard strip b, thereby holding the movable part II underneath in its position. The further protection against shifting consists in the already mentioned automatic locking of parts I and II, which is carried out by a second cardboard strip fastened below the slot c / (Fig. 4). In the position of use (Fig. 6) this strip / has pushed itself over the cardboard strip b above it. If the cassette lid presses from above (Fig. 8), the tongue e lying between the two cardboard strips evades this pressure, and the two cardboard strips collide with each other if part II accidentally slides back to prevent it from doing so.

The use of a different plate format requires the replacement of part II. After removing the insert from the cassette, it is sufficient to slightly bend back the tongue e (Fig. 2), whereby the dovetail-shaped end of the paper strip d automatically pops out of the connecting slot g and part II releases. The introduction of Part II is done in reverse order.

With the overall arrangement, the cassette can be opened and closed without a hemgo perform mung.

Claims (2)

Patent Claims: ι. Plate holders made of paper or materials with similar properties, characterized in that that it consists of a narrow part (I) which is attached to the bottom of the cassette and which is provided with a stop (&) is, and there is a slidable on this, bent back part (II), in the cutout of which the plate is held by bevels. 2. Plate holder according to claim 1, characterized in that a narrow strip (b, /) is attached to the 10g displaceable parts (I and II), which overtake each other when attaching the plate, after which the necessary passage cross-section through Clamping one of the two strips between the cover slide and the cassette base is reduced in size to such an extent that the strips form an obstacle when the parts are pushed back. For this purpose ι sheet of drawings.