GB556415A - Improvements in or relating to photographic shutters - Google Patents

Improvements in or relating to photographic shutters

Info

Publication number
GB556415A
GB556415A GB18612/42A GB1861242A GB556415A GB 556415 A GB556415 A GB 556415A GB 18612/42 A GB18612/42 A GB 18612/42A GB 1861242 A GB1861242 A GB 1861242A GB 556415 A GB556415 A GB 556415A
Authority
GB
United Kingdom
Prior art keywords
trigger
ring
latch
carried
blade
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
GB18612/42A
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.)
Kodak Ltd
Original Assignee
Kodak Ltd
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 Kodak Ltd filed Critical Kodak Ltd
Publication of GB556415A publication Critical patent/GB556415A/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)
  • Projection-Type Copiers In General (AREA)

Abstract

556,415. Photographic shutters. KODAK, Ltd. Dec. 31, 1942, No. 18612. Convention date, Feb. 17. [Class 98 (i)] In an "everset" photographic shutter the trigger 21 moves, through engaging latch elements 26, 29, a rack 19 meshing with a gear 17 carried by a blade-operating oscillatable mastermember 13, which is thus moved against the action of a spring 14. After a predetermined movement of the trigger the latch elements are disengaged, releasing the master-member 13, which thereupon operates the blades. In the shutter shown, the rack 19 is formed on a rotatably mounted ring 20, the trigger 21 is carried by another rotatable ring, and the latch 26 is pivoted to the trigger and is released from the latch element or shoulder 29 on the ring 20 by the engagement of a cam surface 30 with a pin 31. The master member operates the blade-ring through an arm 10 pivoted to it and engaging, during the return movement of the mastermember, a lug on the blade-ring. In a modification, the trigger is carried by an arm pivoted at the lower part of the shutter casing, and the latch 26 is moved by a pin carried by it and engaging in a cam slot.
GB18612/42A 1942-02-17 1942-12-31 Improvements in or relating to photographic shutters Expired GB556415A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US556415XA 1942-02-17 1942-02-17

Publications (1)

Publication Number Publication Date
GB556415A true GB556415A (en) 1943-10-04

Family

ID=21999200

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18612/42A Expired GB556415A (en) 1942-02-17 1942-12-31 Improvements in or relating to photographic shutters

Country Status (1)

Country Link
GB (1) GB556415A (en)

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