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
Application number
Inventor
Richard Schuettauf
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB190117076A publication Critical patent/GB190117076A/en
Expired legal-status Critical Current

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.
GB190117076D 1901-08-26 1901-08-26 Improvements in Photographic Roller Blind Shutters having an Adjustable Aperture. Expired GB190117076A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3153978A (en) * 1960-07-12 1964-10-27 Itek Corp Optical projection system

Cited By (1)

* Cited by examiner, † Cited by third party
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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