GB182672A - Improvements in and relating to fireproof projecting rooms for kinema theatres - Google Patents
Improvements in and relating to fireproof projecting rooms for kinema theatresInfo
- Publication number
- GB182672A GB182672A GB1706721A GB1706721A GB182672A GB 182672 A GB182672 A GB 182672A GB 1706721 A GB1706721 A GB 1706721A GB 1706721 A GB1706721 A GB 1706721A GB 182672 A GB182672 A GB 182672A
- Authority
- GB
- United Kingdom
- Prior art keywords
- projecting
- fireproof
- kinema
- theatres
- windows
- 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
- G03B21/14—Details
- G03B21/18—Fire preventing or extinguishing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
182,672. Wright, A. G. June 22, 1921. Window frames.-A fireproof projecting room for kinema theatres is provided with projecting and viewing apertures closed by transparent fireproof windows having inclined edges so as to form smoke-tight joints, the windows being hinged to open inwardly and having safety shutters. The apertures 2 in the front wall of the projecting room have fixed frames 4 containing window frames 5, which have inclined edges. The upper edges are hinged and the lower edges are provided with knobs 9. The windows 5 close of their own weight and are recessed to allow slidable safety-shutters 10 to be mounted in guides on the face of the wall.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1706721A GB182672A (en) | 1921-06-22 | 1921-06-22 | Improvements in and relating to fireproof projecting rooms for kinema theatres |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1706721A GB182672A (en) | 1921-06-22 | 1921-06-22 | Improvements in and relating to fireproof projecting rooms for kinema theatres |
Publications (1)
Publication Number | Publication Date |
---|---|
GB182672A true GB182672A (en) | 1922-07-13 |
Family
ID=10088658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1706721A Expired GB182672A (en) | 1921-06-22 | 1921-06-22 | Improvements in and relating to fireproof projecting rooms for kinema theatres |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB182672A (en) |
-
1921
- 1921-06-22 GB GB1706721A patent/GB182672A/en not_active Expired
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