GB481691A - Improvements in or relating to photographic shutters - Google Patents

Improvements in or relating to photographic shutters

Info

Publication number
GB481691A
GB481691A GB4675/37A GB467537A GB481691A GB 481691 A GB481691 A GB 481691A GB 4675/37 A GB4675/37 A GB 4675/37A GB 467537 A GB467537 A GB 467537A GB 481691 A GB481691 A GB 481691A
Authority
GB
United Kingdom
Prior art keywords
ring
pin
shutter
moved
spring
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
GB4675/37A
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.)
Gebr Junghans AG
Original Assignee
Gebr Junghans 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 Gebr Junghans AG filed Critical Gebr Junghans AG
Publication of GB481691A publication Critical patent/GB481691A/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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/08—Shutters
    • G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane
    • G03B9/18—More than two members
    • G03B9/22—More than two members each moving in one direction to open and then in opposite direction to close, e.g. iris type

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

481,691. Photographic shutters. JUNGHANS AKT.-GES., GEB. Feb. 16, 1937, No. 4675. Convention date, Feb. 29, 1936. [Class 98 (i)] A shutter mechanism is disposed in a housing which is furnished at its rear side with a socket 2 upon which is mounted a rear casing 5 containing delay action mechanism 14, and a setting ring 7 for setting the retarding part of the delay action mechanism, and for releasing the shutter mechanism is located within the rear casing, openings 20, 21 being provided in the wall through which the movements of the ring are conveyed to the shutter mechanism. The ring 7 is flat and fits over a flange 8 which is coaxial to the lens support. A projecting stud 9 and an actuating spring 10 are attached to the ring. A pawl 11 and spring 12 on the ring 7 coact with a toothed rim 13 which has other teeth in engagement with the retarding mechanism 14. Projecting portions 15, 16 on the ring are influenced by engagement with pins 17, 18 projecting through the openings 20, 21. When the handle 9 is moved clockwise, the ring 7 is turned and tensions the spring 10, the pawl 11 riding over the teeth 13. The pin 18 prevents return of the ring. When the pin 18 is moved to release the shutter, the ring 7 drives the rim 13 against the retarding mechanism 14. The cam-shaped portion 15 is thereby moved to actuate the pin 17 and start the photographic exposure.
GB4675/37A 1936-02-29 1937-02-16 Improvements in or relating to photographic shutters Expired GB481691A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE481691X 1936-02-29

Publications (1)

Publication Number Publication Date
GB481691A true GB481691A (en) 1938-03-16

Family

ID=6542698

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4675/37A Expired GB481691A (en) 1936-02-29 1937-02-16 Improvements in or relating to photographic shutters

Country Status (1)

Country Link
GB (1) GB481691A (en)

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