GB820757A - Improvements in frames for transparencies - Google Patents
Improvements in frames for transparenciesInfo
- Publication number
- GB820757A GB820757A GB16873/57A GB1687357A GB820757A GB 820757 A GB820757 A GB 820757A GB 16873/57 A GB16873/57 A GB 16873/57A GB 1687357 A GB1687357 A GB 1687357A GB 820757 A GB820757 A GB 820757A
- Authority
- GB
- United Kingdom
- Prior art keywords
- film
- transparency
- transparencies
- frames
- mount
- 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)
- Preparing Plates And Mask In Photomechanical Process (AREA)
Abstract
820,757. Lantern slides. LIEBNITZ, E. May 28, 1957 [June 6. 1956], No. 16873/57. Class 98(2) [Also. in Group XV] In a transparency mount, the film is gripped between two members of the mount frame and the latter are recessed to accommodate two cover glasses without pressing on them. The surface of the rear cover glass in contact with the transparency may be ground. As shown, the perforated edges of the film 4 are located by abutments 5 between the frame members 1, 1<SP>1</SP>.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE820757X | 1956-06-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB820757A true GB820757A (en) | 1959-09-23 |
Family
ID=6738119
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16873/57A Expired GB820757A (en) | 1956-06-06 | 1957-05-28 | Improvements in frames for transparencies |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB820757A (en) |
-
1957
- 1957-05-28 GB GB16873/57A patent/GB820757A/en not_active Expired
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