GB408534A - Improvements in and relating to electric lamps - Google Patents
Improvements in and relating to electric lampsInfo
- Publication number
- GB408534A GB408534A GB28355/33A GB2835533A GB408534A GB 408534 A GB408534 A GB 408534A GB 28355/33 A GB28355/33 A GB 28355/33A GB 2835533 A GB2835533 A GB 2835533A GB 408534 A GB408534 A GB 408534A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- bulb
- transparent
- rays
- ultra
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/38—Devices for influencing the colour or wavelength of the light
- H01J61/40—Devices for influencing the colour or wavelength of the light by light filters; by coloured coatings in or on the envelope
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/02—Surface treatment of glass, not in the form of fibres or filaments, by coating with glass
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/12—Silica-free oxide glass compositions
- C03C3/16—Silica-free oxide glass compositions containing phosphorus
- C03C3/19—Silica-free oxide glass compositions containing phosphorus containing boron
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
- H01J5/08—Vessels; Containers; Shields associated therewith; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Surface Treatment Of Glass (AREA)
- Paints Or Removers (AREA)
Abstract
408,534. Electric incandescent lamp bulbs. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.- (Assignees of Pipkin, M.; 3815, Parkdale Avenue, Cleveland Heights, Ohio, U.S.A.). Oct. 13, 1933, No. 28355. Convention date, Oct. 14, 1932. Drawings to Specification. [Class 39 (ii).] An electric incandescent lamp bulb transparent to ultra-violet rays is partly coated with a finely divided glass transparent to ultraviolet rays but opaque to visible rays, which is held on the bulb by a fused material transparent both to ultra-violet and to visible rays. A diffusing coating is thus obtained which is transparent to ultra-violet rays. In the example given the finely divided glass is a purple variety of that commercially known under the Registered Trade Mark " Corex " and comprises phosphoric acid (68 per cent), lime (27 per cent), boric oxide (5 per cent) and cobalt oxide to colour. This is held on the bulb by a borosilicate glass comprising silica (68.5 per cent), boric oxide (23 per cent), sodium oxide (6.5 per cent) and alumina (2 per cent). The glasses are finely powdered and mixed with alcohol in the proportion of 3 parts of " Corex " to 2 parts of borosilicate glass. The bulb of the lamp is dipped in the mixture and fired. The borosilicate glass may be replaced by a glassy material such as sodium borate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US408534XA | 1932-10-14 | 1932-10-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB408534A true GB408534A (en) | 1934-04-12 |
Family
ID=21913331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28355/33A Expired GB408534A (en) | 1932-10-14 | 1933-10-13 | Improvements in and relating to electric lamps |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE587715C (en) |
| FR (1) | FR762053A (en) |
| GB (1) | GB408534A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1306883A1 (en) * | 2000-07-07 | 2003-05-02 | Photoscience Japan Corporation | Treating apparatus utilizing ultraviolet ray |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE950224C (en) * | 1952-09-21 | 1956-10-04 | Quarzlampen Gmbh | Electric ultraviolet radiation lamp |
| DE102004051846B4 (en) * | 2004-08-23 | 2009-11-05 | Heraeus Quarzglas Gmbh & Co. Kg | Component with a reflector layer and method for its production |
-
1933
- 1933-01-08 DE DEP66781D patent/DE587715C/en not_active Expired
- 1933-10-11 FR FR762053D patent/FR762053A/en not_active Expired
- 1933-10-13 GB GB28355/33A patent/GB408534A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1306883A1 (en) * | 2000-07-07 | 2003-05-02 | Photoscience Japan Corporation | Treating apparatus utilizing ultraviolet ray |
| EP1306883A4 (en) * | 2000-07-07 | 2006-08-30 | Photoscience Japan Corp | Treating apparatus utilizing ultraviolet ray |
Also Published As
| Publication number | Publication date |
|---|---|
| DE587715C (en) | 1933-11-07 |
| FR762053A (en) | 1934-04-03 |
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