DE1982239U - FILM CASSETTE, PREFERABLY NARROW FILM CASSETTE. - Google Patents

Description

AGFA-GEVAERT AKTIEIGESEILSÖHAFT - - Oct. 27, 1967

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MK 572

Film cassette, preferably narrow film cassette

The price increase concerns a film cassette, preferably a narrow film cassette, with a cooperating with the film stage of a camera Image window and one perpendicular to the plane of the Picture window resilient pressure plate.

In the known cine cartridges of this type, there is; Difficulty that when the cassette is open and the handling is clumsy, the film pressure plate and its pressure spring come off the cassette body falls out and must be re-assembled. This leads to difficulties in the assembly or Reuse of the cassette. With the innovation should therefore be avoided that the film pressure plate when the cassette is open falls out of this.

Firing according to the aforementioned for a cassette Kind of proposed that the pressure plate includes stop tabs, the parts fixed together with the fessette in the Andruökrichtung

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running grooved or slide guide, and that the Cassette-fixed parts have an end stop for a displacement movement of the stop tabs in the direction of pressure, with an approx A slot running parallel to the picture window is provided, into which the pressure plate can be pushed so far that the stop tabs are displaceable along the parts fixed to the cassette in the pressure direction.

Further advantages and details of the innovation are based on a drawing showing a perspective view of an exploded view film cassette according to the invention Form shows, explained in more detail.

T denotes a carrier which can be injection-molded in one piece from plastic. It comprises an intermediate base 2, a guide core 3 for the unexposed film roll 4, a film pressure plate 5, guide means 6 to 10 for the film strip 11 and a drivable take-up shaft In addition, the carrier 1 can have side walls 13. The carrier 1 loaded with film is inserted into an essentially light-tight housing during assembly one part 14 having a recess 16. The housing 14, 15 is approximately adapted to the circumferential shape of the carrier 1. The one with the film

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11 loaded "carrier 1 is now placed in part H, that the winding shaft 12 is accessible through the recess 16 is, preferably protrudes through this. As a result, the carrier 1 is secured against displacement with respect to the housing part 14. i) ie both housing parts 14, 15 also have recesses 17, on, in which the not shown image stage of the camera 30 protrudes with the cassette inserted in such a way that the film 11, through the film pressure plate 5 with sufficient accuracy in the Image plane of the lens is held or guided. The housing part 14 can inside along its approximately parallel to the film direction extending upper edge have a milled recess 19 into which, when the part 15 is placed, a projection 20 intervenes. In the edge formed by the cutout 19 and on the extension 20, embossments 25 can be provided, which in both Parts, for example, go outwards and when the parts H, 15 are put together to form a push-button-like Connectuh'g ^ come into engagement. The wall 13 can be made of resilient Material be made so that they are resilient the wall of the parts H, 15 applies and thus to the further Lagesicherung'des core 1 in the housing 14, 15 contributes. At the Inserting the cassette 1, 14, 15 into the camera also arrives the drive shaft 31 for the film spool in engagement with the take-up shaft 12, so that when the camera shutter is actuated Film 5 is wound onto the take-up shaft 12.

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The Pilman pressure plate 5 was "so far together with a spring 30 behind the helmet guide parts 7> 8 pushed in with indan stops 7a, 8a then pressed against them by each 30 and thereby held in the correct position, lei shocks or when removing the part 1 from the pouch-like casing 14, 15, however, the film pressure plate 5 move perpendicular to the pressure direction of the spring 30 and then slide out of the clip-like film guide parts 7, 7a, 8, 8a at least to one side.

According to the present price increase, this disadvantage is to be avoided- «For this purpose, the film pressure plate has two tabs 5a, 5b on each of its two narrow sides, the distance between which is so great that they clasp the clamp-like film guide parts 7» 8 in the direction perpendicular to the direction of pressure and so a displacement of the pressure plate 5 in this; Direction can prevent. However, in order to be able to insert the film pressure plate 5 into the cassette part 1 in such a way that, on the one hand, the film guide parts 7 »8 can clamp the film pressure plate 5 and, on the other hand, their tabs 5a, 5b can clasp the film guide parts 7, Ö, there is a slot 311 32 behind the film guide parts 7» 8 of the width of the lobes 5a, 5b. -and- the length of the entire film pressure plate 5 is provided. Unfortunately, the spring 30 and the tabs 5a, 5b are pushed into the slot 3 ″ i, 32 until the tabs 5a, 5b are above or below

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the pilm guide parts 7, 8 lie. Then the pressure plate 5 is moved under the action of the spring 30 along the film guide parts 7 »8 in the pressure direction until it comes to rest on their clamp-like parts 7a, 8a and is thus secured against falling out of the carrier part 1 in the direction of the film pressure and perpendicular to it.

Of course, the firing is not in the embodiment shown limited. So it would also be possible that two tabs 5a, 5b are connected to each other by a web, tabs 5a, 5b and webs can be pushed into the slot 31, 32 and then can be moved in the pressure direction until the Tabs 5a, 5b encompass two Yorsprünge of the support part 1 and the webs on the Yorsprüngen in the pressure direction to. system come. The projections can be parts of the film guide, although this is not mandatory. Finally it would be possible that only one tab 5a ^ 5b is provided on the pressure plate is that through the slot 31, 32 in a to the pressure direction parallel cassette-side courage is introduced, whereby the pressure plate also prevents falling out of the cassette is secured. Naturally, the control is not on ■ visual film cassettes limited, but also applicable to roll film cassettes. .

Claims (4)

HA. ß15 991-27. MK 572 protection claims 1. Film cassette, preferably Sohmalfilmkassette, with a image window cooperating with the film stage of a camera and one perpendicular to the plane of the image window resilient film pressure plate, characterized in that the pressure plate (5) comprises stop tabs (5a, 5b) which together with cassette-fixed parts (T, 8) one in the pressure direction Form running groove or slide guide, and that the cassette-fixed parts (7, 8) an end stop (7a, 8a) for a sliding movement of the support tabs (5a, 5b) have in the pressure direction. 2. Film cassette according to claim -1, characterized in that behind the cassette-fixed parts (7, 8) on the film cassette (T) an approximately parallel to the picture window (17, 18) extending slot (31, 32) is provided, in which- the pressure plate (5) can be pushed in so far that the stop tabs (5a, 5b) can be displaced in the direction of pressure along the parts fixed to the cassette ^: - (7, 8). ; 3. Film cassette according to claim 1 and 2, characterized in that on both sides of the film pressure plate (S) two stop tabs (5a, 5b) encompass the parts fixed to the cassette (7V '8) in a U-shape. -::; MK 572 ■ ... ■ .- ■. - ^_:: / 4. Narrow film cassette according to claims 1 and 2, characterized in that on both sides of the film pressure plate (5) a stop tab is provided, which is parallel in each case to the. Pressing direction running fut of the cassette-fixed parts intervenes. 1 sheet of drawings