GB563922A - Improvements in and relating to carriers or holders for plates and films in photographic and like projecting apparatus - Google Patents
Improvements in and relating to carriers or holders for plates and films in photographic and like projecting apparatusInfo
- Publication number
- GB563922A GB563922A GB790543A GB790543A GB563922A GB 563922 A GB563922 A GB 563922A GB 790543 A GB790543 A GB 790543A GB 790543 A GB790543 A GB 790543A GB 563922 A GB563922 A GB 563922A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frame
- plate
- slides
- bellows
- aperture
- 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/64—Means for mounting individual pictures to be projected, e.g. frame for transparency
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Structure And Mechanism Of Cameras (AREA)
Abstract
563,922. Optical-projection apparatus; photographic enlargers. CLEMENTSON, J. S. May 18, 1943, No. 7905. [Classes 97 (i) and 98 (i)] A carrier for centring a plate or film in a photographic or like projecting apparatus, of the kind comprising a pair of adjustable cross slides, one of which is carried by the other and is adapted to receive a plate or film holder, is provided with ineans for attaching it in a lighttight manner to the bellows or tubular body carrying the lens of the apparatus, and one of the slides is provided with means for making a light-tight engagement with the front of the light chamber. In the form shown, the carrier comprises a frame a in the front of which is an aperture b which receives the usual frame attached to the rear end of the bellows or tubular lens-carrying portion of the enlarger, the parts being then secured together by moving plates c slidably mounted on the frame a at the vertical edges of the aperture b so that they engage over the edges of the bellows frame. Within the frame a is a horizontally adjustable slide.d, d<1> between the upright members d of which is mounted a vertically-adjustable slide g. On the rear face of this latter slide is carried an apertured metal plate m, spaced from it by strips k, k<1> so as to form open-ended horizontal channels into which may be slid a plate or film holder n. The plate m bears on a velvet or like facing around the aperture in the front of the light chamber to ensure lighttightness. The sliding edges of the slides are metal faced, and spring-pressed balls (not shown) in one edge of each take up slackness in the movement. The slides are moved by rods e, h which are held in the adjusted position by pinching screws f, j, or may alternatively be threaded into nuts so that adjustment is performed by rotating them.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB790543A GB563922A (en) | 1943-05-18 | 1943-05-18 | Improvements in and relating to carriers or holders for plates and films in photographic and like projecting apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB790543A GB563922A (en) | 1943-05-18 | 1943-05-18 | Improvements in and relating to carriers or holders for plates and films in photographic and like projecting apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB563922A true GB563922A (en) | 1944-09-05 |
Family
ID=9842054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB790543A Expired GB563922A (en) | 1943-05-18 | 1943-05-18 | Improvements in and relating to carriers or holders for plates and films in photographic and like projecting apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB563922A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2112552A1 (en) * | 2008-04-04 | 2009-10-28 | Huber und Steiger Gmbh | Projection and lighting device |
-
1943
- 1943-05-18 GB GB790543A patent/GB563922A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2112552A1 (en) * | 2008-04-04 | 2009-10-28 | Huber und Steiger Gmbh | Projection and lighting device |
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