GB686279A - Improvements in or relating to photographic shutters - Google Patents
Improvements in or relating to photographic shuttersInfo
- Publication number
- GB686279A GB686279A GB31017/50A GB3101750A GB686279A GB 686279 A GB686279 A GB 686279A GB 31017/50 A GB31017/50 A GB 31017/50A GB 3101750 A GB3101750 A GB 3101750A GB 686279 A GB686279 A GB 686279A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shutter
- projection
- master member
- lever
- 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
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
- G03B9/20—More than two members each moving in a single direction first to open and then to reclose
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Shutters For Cameras (AREA)
Abstract
686,279. Photographic shutters. KODAK, Ltd. Dec. 20, 1950 [Dec. 20, 1949], No. 31017/50. Class 98 (i). A multiple pivoted-blade shutter having an arcuately movable master member is provided with a blade rebound prevention device comprising a lever 33 pivoted in the shutter casing and urged by a spring 35 to a position in which an impact shoulder 32 on the lever lies in the path of, and a latching shoulder 39 thereon lies clear of, a projection 30 on the master member, so that as the master member approaches its rest position at the end of an exposure, its projection strikes the impact shoulder 32 and pivots the lever to bring the latching shoulder 39 behind the master member projection. As described, the shutter to which the device is applied is that described and claimed in Specification 650,874, having its blade ring directly driven by a power spring, and the projection 30 is carried by the shutter setting arm 11 attached to said ring. The latch 39 is released on moving the arm anticlockwise to set the shutter, the spring 35 aiding this release. Specification 523,134 also is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US686279XA | 1949-12-20 | 1949-12-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB686279A true GB686279A (en) | 1953-01-21 |
Family
ID=22083740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB31017/50A Expired GB686279A (en) | 1949-12-20 | 1950-12-20 | Improvements in or relating to photographic shutters |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB686279A (en) |
-
1950
- 1950-12-20 GB GB31017/50A patent/GB686279A/en not_active Expired
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