GB190117076A - Improvements in Photographic Roller Blind Shutters having an Adjustable Aperture. - Google Patents
Improvements in Photographic Roller Blind Shutters having an Adjustable Aperture.Info
- Publication number
- GB190117076A GB190117076A GB190117076DA GB190117076A GB 190117076 A GB190117076 A GB 190117076A GB 190117076D A GB190117076D A GB 190117076DA GB 190117076 A GB190117076 A GB 190117076A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blind
- roller
- adjustable aperture
- roller blind
- shutters
- 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
Landscapes
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Abstract
17,076. Sch³ttauf, R. Aug. 26. Shutters.-Relates to a roller blind shutter with an adjustable aperture. The blind 1, Fig. 1, is passed through slits in the setting- roller 2, and its free ends are connected to the two winding-up rollers 5 and 6. In each of the two halves of the blind 1 are apertures 10 and 8, and the breadth of the exposure aperture is adjusted by winding either end of the blind on to its roller 5 or 6. Each roller 5, 6 is fitted with a spring to wind up the blind, and the friction of the folds of the blind on the roller 2 keeps the width of the exposure aperture constant during the movement of the blind. Fig. 2 shows the blind wound on the roller 2 before an exposure. Modifications of the method of connecting the blind to the roller 2 are described ; only one of the rollers 5, 6 may be furnished with a spring the other being geared to it. For time exposures a bar may be pushed forward to catch a stop on the setting- mechanism.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190117076T | 1901-08-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190117076A true GB190117076A (en) | 1902-06-19 |
Family
ID=32424570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190117076D Expired GB190117076A (en) | 1901-08-26 | 1901-08-26 | Improvements in Photographic Roller Blind Shutters having an Adjustable Aperture. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190117076A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3153978A (en) * | 1960-07-12 | 1964-10-27 | Itek Corp | Optical projection system |
-
1901
- 1901-08-26 GB GB190117076D patent/GB190117076A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3153978A (en) * | 1960-07-12 | 1964-10-27 | Itek Corp | Optical projection system |
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