GB265455A - - Google Patents
Info
- Publication number
- GB265455A GB265455A GB265455DA GB265455A GB 265455 A GB265455 A GB 265455A GB 265455D A GB265455D A GB 265455DA GB 265455 A GB265455 A GB 265455A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fabric
- silk
- coated
- coating
- filter
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/04—Additive processes using colour screens; Materials therefor; Preparing or processing such materials
- G03C7/06—Manufacture of colour screens
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Detergent Compositions (AREA)
- Coloring (AREA)
Abstract
265,455. Holub, C. July 13, 1926. Colour filters.-With the object of eliminating glare from artificial light a light filter is manufactured from silk by washing ordinary silk fabric or artificial silk fabrio in soapy water, dipping it subsequently in a weak aqueous solution of formaldehyde and then drying the material. The fabric is then coated with a thick colloidal substance consisting of gelatine or like material and water to which is added a saturated solution of copper sulphate or copper ehloride. After coating and before drying the coated fabric is subjected to formalin fumes for several days to render the coating insoluble. In use the filter 2 is placed between glass covers 3, 4 secured bv a metal rim 5. and used in lamps &c. for all kinds of lighting.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB265455A true GB265455A (en) |
Family
ID=1740105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB265455D Active GB265455A (en) |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB265455A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4688156A (en) * | 1984-04-26 | 1987-08-18 | Kabushiki Kaisha Tokai | Light-shielding screen device |
-
0
- GB GB265455D patent/GB265455A/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4688156A (en) * | 1984-04-26 | 1987-08-18 | Kabushiki Kaisha Tokai | Light-shielding screen device |
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