GB534442A - Improvements in or relating to photographic shutters - Google Patents

Improvements in or relating to photographic shutters

Info

Publication number
GB534442A
GB534442A GB3545/40A GB354540A GB534442A GB 534442 A GB534442 A GB 534442A GB 3545/40 A GB3545/40 A GB 3545/40A GB 354540 A GB354540 A GB 354540A GB 534442 A GB534442 A GB 534442A
Authority
GB
United Kingdom
Prior art keywords
blade
exposure
embossing
arm
operated
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
GB3545/40A
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 GB534442A publication Critical patent/GB534442A/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

Abstract

534,442. Photographic shutters. KODAK, Ltd. Feb. 26, 1940, No. 3545. Convention date, March 14, 1939. [Class 98 (i)] A photographic shutter comprise a plate 9 having an exposure apertur 25 surrounded by an embossing 30 in which engages a complementary embossing 31 on a pivoted shutte blade 22 when the latter is in its position of rest after 'an exposure, the two embossings providing a light lock and serving to prevent rebound of the blade. In the form shown, the blade moves in alternate directions to make the exposures, an embossing 31 being formed at each end. It is operated by a snapover spring 20 tensioned by an arm 15 which is rocked in alternate directions about its pivot 16 by means of a flexible blade 13 carried by an operating slide 12, the blade engaging alternately each of a pair of notches 14 formed in the arm 15. The invention is also described as applied to a shutter comprising a rotary blade operated by a snap-over spring in one direction to make the exposure and in the reverse direction when the trigger is released, a cover plate attached to the trigger masking the exposure aperture during the return movement.
GB3545/40A 1939-03-14 1940-02-26 Improvements in or relating to photographic shutters Expired GB534442A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US534442XA 1939-03-14 1939-03-14

Publications (1)

Publication Number Publication Date
GB534442A true GB534442A (en) 1941-03-06

Family

ID=21984269

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3545/40A Expired GB534442A (en) 1939-03-14 1940-02-26 Improvements in or relating to photographic shutters

Country Status (1)

Country Link
GB (1) GB534442A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000309A (en) * 1977-06-23 1979-01-04 Seiko Koki Kk Camera shutter mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000309A (en) * 1977-06-23 1979-01-04 Seiko Koki Kk Camera shutter mechanism
GB2000309B (en) * 1977-06-23 1982-01-06 Seiko Koki Kk Camera shutter mechanism

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