DE853098C - Process for the production of film cassettes from non-metallic material - Google Patents

Process for the production of film cassettes from non-metallic material

Info

Publication number
DE853098C
DE853098C DES22386A DES0022386A DE853098C DE 853098 C DE853098 C DE 853098C DE S22386 A DES22386 A DE S22386A DE S0022386 A DES0022386 A DE S0022386A DE 853098 C DE853098 C DE 853098C
Authority
DE
Germany
Prior art keywords
film
production
metallic material
film cassettes
cassette
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DES22386A
Other languages
German (de)
Inventor
Otto Steiner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to DES22386A priority Critical patent/DE853098C/en
Application granted granted Critical
Publication of DE853098C publication Critical patent/DE853098C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/26—Holders for containing light sensitive material and adapted to be inserted within the camera
    • G03B17/265—Holders for containing light sensitive material and adapted to be inserted within the camera specially adapted for motion picture film, e.g. cassettes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Unwinding Webs (AREA)

Description

Die gebräuchlichen Filmkassetten für kinematographische Geräte sind im allgemeinen aus Blech gefertigt. Es wurde jedoch auch schon vorgeschlagen, die Kassette aus Preßstoff herzustellen. Im Inneren des zur Aufnahme der Filmspule dienenden Unterteils der Kassette sind außer den zur Filmführung dienenden Teilen Federn vorgesehen, die sich mit leichtem Druck gegen das Filmband legen, um es vor der Belichtungsöffnung straff gespannt zu halten und den Ablauf der Filmspulen abzubremsen. Die Federn wurden bisher aus elastischem Metall (z. B. Federstahl) hergestellt und durch besondere Mittel (Niete, Schrauben) in dem Unterteil der Kassette befestigt.The common film cassettes for cinematographic equipment are generally made of sheet metal. However, it has also been suggested that the Manufacture cassette from molded material. Inside the one used to hold the film reel In addition to the parts used to guide the film, springs are provided in the lower part of the cassette. which lay down with light pressure against the film tape in order to make it in front of the exposure aperture to keep it taut and to slow down the flow of the film reels. The feathers were previously made of elastic metal (e.g. spring steel) and special Means (rivets, screws) fastened in the lower part of the cassette.

Die Erfindung strebt eine wesentliche Vereinfachung in der Herstellung von Filmkassetten an, wodurch sich der Herstellungspreis ganz erheblich ermäßigt. Dies wird dadurch erreicht, daß die zur Straffung und Abbremsung des Films dienenden federnden Elemente im Innern des Kassettenunterteils mit diesem zusammen in einem Stück aus dünnwandigem Preßmaterial, Papier oder imprägnierten Stoffen hergestellt werden. Infolge Fertigung der wesentlichsten Elemente des Kassettenunterteils in einem einzigen Arbeitsgang werden sowohl die erhöhten Kosten für die getrennte Herstellung der einzelnen Teile als auch die Montagekosten erspart.The invention seeks to achieve a substantial simplification in manufacture of film cassettes, which significantly reduces the manufacturing price. This is achieved by the fact that the used to tighten and decelerate the film resilient elements in the interior of the lower cassette part with this together in one Piece made of thin-walled pressed material, paper or impregnated material will. As a result of the manufacture of the most essential elements of the lower part of the cassette in a single operation will both increase the cost of separate manufacture of the individual parts as well as the assembly costs.

Auf der Zeichnung ist ein Ausführungsbeispiel für eine nach dem Verfahren der Erfindung hergestellte Kassette dargestellt. Mit t ist die Außenwand der Kassette, mit 2 der Abwickelkern und mit 3 der Aufwickelkern für die Filmspulen bezeichnet. Der Kanal 4 -für die Filmführung wird aus der Außenwandung 5 und einer besonderen Führungswand 6 gebildet. Aus der Führungswand tritt das federnde Element 7 für die Abwicklungsspule heraus. Auf der anderen Seite endigt die Führungswandung 6 in dem federnden Element 8 für die Aufwicklungsspule. Da die Beanspruchung der federnden Elemente 7 und 8 nicht sehr groß ist, können diese aus dünnwandigem Preßmaterial, Hartpapier oder imprägnierten Stoffen bestehen und derart dünn ausgebildet werden, daß sie eine für den vorgesehenen Zweck genügende federnde Wirkung besitzen.The drawing shows an exemplary embodiment for one according to the method the cassette made of the invention shown. With t is the outer wall of the cassette, with 2 the winding core and with 3 the winding core for the film reels. The channel 4 for the film guidance is made up of the outer wall 5 and a special one Guide wall 6 is formed. From the guide wall occurs the resilient element 7 for Supply spool out. On the other hand, the guide wall 6 ends in the resilient element 8 for the take-up reel. Because the stress on the resilient Elements 7 and 8 is not very large, these can be made of thin-walled pressed material, Made of hard paper or impregnated materials and made so thin that that they have a resilient effect sufficient for the intended purpose.

Claims (2)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung von Filmkassetten aus nicht metallischem Material, dadurch gekennzeichnet, daß die zur Straffung und Abbremsung des Films dienenden federnden Elemente (7, 8) im Innern des Kassettenunterteils (i) mit diesem zusammen in einem Stück aus dünnwandigem Preßmaterial, Papier oder imprägnierten Stoffen hergestellt werden. PATENT CLAIMS: i. Process for the production of film cassettes from non-metallic material, characterized in that the resilient elements (7, 8) serving to tighten and brake the film inside the lower cassette part (i) together with the latter in one piece made of thin-walled pressed material, paper or impregnated material getting produced. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die federnden Elemente (7, 8) als Teile des Filmkanals (4) ausgebildet sind.2. The method according to claim i, characterized characterized in that the resilient elements (7, 8) are designed as parts of the film channel (4) are.
DES22386A 1951-03-15 1951-03-15 Process for the production of film cassettes from non-metallic material Expired DE853098C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES22386A DE853098C (en) 1951-03-15 1951-03-15 Process for the production of film cassettes from non-metallic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES22386A DE853098C (en) 1951-03-15 1951-03-15 Process for the production of film cassettes from non-metallic material

Publications (1)

Publication Number Publication Date
DE853098C true DE853098C (en) 1952-10-20

Family

ID=7476889

Family Applications (1)

Application Number Title Priority Date Filing Date
DES22386A Expired DE853098C (en) 1951-03-15 1951-03-15 Process for the production of film cassettes from non-metallic material

Country Status (1)

Country Link
DE (1) DE853098C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1043078B (en) * 1955-06-17 1958-11-06 Jacques Bolsey Resilient film pressure plate in a film cassette for cinematographic recording devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1043078B (en) * 1955-06-17 1958-11-06 Jacques Bolsey Resilient film pressure plate in a film cassette for cinematographic recording devices

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