GB246270A - Improvements relating to the exhibition of motion pictures and the like in daylight - Google Patents
Improvements relating to the exhibition of motion pictures and the like in daylightInfo
- Publication number
- GB246270A GB246270A GB28731/24A GB2873124A GB246270A GB 246270 A GB246270 A GB 246270A GB 28731/24 A GB28731/24 A GB 28731/24A GB 2873124 A GB2873124 A GB 2873124A GB 246270 A GB246270 A GB 246270A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- daylight
- paraffin
- exhibition
- fed
- 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
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
- G03B21/608—Fluid screens
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
246,270. Carroll, W. C. Dec. 1, 1924. Optical-projection apparatus. -- In apparatus for daylight projection, in which a translucent absorbent screen is employed which is coated or impregnated with fatty &c. material, the screen is maintained in a moistened or saturated condition by the constant application thereto of a suitable oily substance. The apparatus is shown disposed within a cabinet 2, the screen 12 extending across an opening 14 in the wall 13. The oily substance, which may consist of paraffin with or without the addition of petroleum jelly, is contained in a reservoir 17 from which it is fed to the screen by wicks 15 or tubes 16 with cocks 19. To assist in saturating the screen a border 21 of absorbent material such as felt &c. is provided, on to which the paraffin &c. is fed. The cabinet contains the projector 6 through which an endless film 7, guided by rollers 8, may be passed, reflectors 9 being provided for directing the light to the screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB28731/24A GB246270A (en) | 1924-12-01 | 1924-12-01 | Improvements relating to the exhibition of motion pictures and the like in daylight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB28731/24A GB246270A (en) | 1924-12-01 | 1924-12-01 | Improvements relating to the exhibition of motion pictures and the like in daylight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB246270A true GB246270A (en) | 1926-01-28 |
Family
ID=10280191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28731/24A Expired GB246270A (en) | 1924-12-01 | 1924-12-01 | Improvements relating to the exhibition of motion pictures and the like in daylight |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB246270A (en) |
-
1924
- 1924-12-01 GB GB28731/24A patent/GB246270A/en not_active Expired
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