DE617055C - Roll film cassette with a pressure plate that is inevitably lifted when the film is advanced - Google Patents

Roll film cassette with a pressure plate that is inevitably lifted when the film is advanced

Info

Publication number
DE617055C
DE617055C DEV30302D DEV0030302D DE617055C DE 617055 C DE617055 C DE 617055C DE V30302 D DEV30302 D DE V30302D DE V0030302 D DEV0030302 D DE V0030302D DE 617055 C DE617055 C DE 617055C
Authority
DE
Germany
Prior art keywords
film
pressure plate
advanced
lifted
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
DEV30302D
Other languages
German (de)
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.)
FRITZ VOELK
Original Assignee
FRITZ VOELK
Publication date
Priority to DEV30302D priority Critical patent/DE617055C/en
Application granted granted Critical
Publication of DE617055C publication Critical patent/DE617055C/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
    • G03B1/00—Film strip handling
    • G03B1/42—Guiding, framing, or constraining film in desired position relative to lens system
    • G03B1/48—Gates or pressure devices, e.g. plate

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)

Description

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

BERLIN. CEDRUCKT IN DER REICHSDRUCKEREiBERLIN. PRINTED IN THE EMPIRE PRINTING

Claims (1)

Patentanspruch :Claim: Rollfilmkassette mit einer beim Filmvorschub zwangsläufig abgehobenen Andrückplatte, dadurch gekennzeichnet, daß die zum Anheben der Andrückplatte (p) und ium Antrieb des Filmvorschubwerkes dienende Welle (a) den Filmvorschub über eine Feder (/) bewirkt, die derart bemessen ist, daß unter dem Einfluß des von der Welle (a) ausgeübten Drehmomentes zunächst nur die Feder (/) gespannt wird und erst nach dem Abheben der Andrückplatte (p) der Filmvorschub einsetzt.Roll film cassette with a pressure plate that is inevitably lifted when the film is advanced, characterized in that the shaft (a) serving to raise the pressure plate (p) and drive the film advance mechanism causes the film to be advanced by means of a spring (/) which is dimensioned such that under the influence Due to the torque exerted by the shaft (a) , only the spring (/) is initially tensioned and the film advance starts only after the pressure plate (p) has been lifted off.
DEV30302D Roll film cassette with a pressure plate that is inevitably lifted when the film is advanced Expired DE617055C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEV30302D DE617055C (en) Roll film cassette with a pressure plate that is inevitably lifted when the film is advanced

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV30302D DE617055C (en) Roll film cassette with a pressure plate that is inevitably lifted when the film is advanced

Publications (1)

Publication Number Publication Date
DE617055C true DE617055C (en) 1935-08-10

Family

ID=7585559

Family Applications (1)

Application Number Title Priority Date Filing Date
DEV30302D Expired DE617055C (en) Roll film cassette with a pressure plate that is inevitably lifted when the film is advanced

Country Status (1)

Country Link
DE (1) DE617055C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE944767C (en) * 1952-08-17 1956-06-21 Voigtlaender Ag Roll film camera with film pressure plate that can be lifted off the film
DE1027055B (en) * 1951-04-06 1958-03-27 Serix S A R L Device for the periodic exposure of parts of a coherent, sensitive area in the form of a film

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1027055B (en) * 1951-04-06 1958-03-27 Serix S A R L Device for the periodic exposure of parts of a coherent, sensitive area in the form of a film
DE944767C (en) * 1952-08-17 1956-06-21 Voigtlaender Ag Roll film camera with film pressure plate that can be lifted off the film

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