GB400756A - Improvements in electric lamps - Google Patents
Improvements in electric lampsInfo
- Publication number
- GB400756A GB400756A GB24845/32A GB2484532A GB400756A GB 400756 A GB400756 A GB 400756A GB 24845/32 A GB24845/32 A GB 24845/32A GB 2484532 A GB2484532 A GB 2484532A GB 400756 A GB400756 A GB 400756A
- Authority
- GB
- United Kingdom
- Prior art keywords
- caesium
- tube
- rubidium
- electrodes
- class
- 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
- 229910052701 rubidium Inorganic materials 0.000 abstract 3
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 abstract 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 229910052792 caesium Inorganic materials 0.000 abstract 2
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 abstract 2
- 239000007789 gas Substances 0.000 abstract 2
- 239000011521 glass Substances 0.000 abstract 2
- 229910052754 neon Inorganic materials 0.000 abstract 2
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 abstract 2
- 241000206319 Chrysothrix caesia Species 0.000 abstract 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052786 argon Inorganic materials 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
- H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
Abstract
400,756. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Patent- Treuhand-Ges. f³r Elektrische Gl³hlampen; 11, Ehrenbergstrasse, Berlin.) Sept. 6, 1932, No. 24845. Convention date, Nov. 6, 1931. [Class 39 (i).] Lamps giving light, including infra-red rays, approximating to daylight are filled with a mixture of rare gas and caesium or rubidium vapour and are so operated that the vapour pressure rises above À02 mm. corresponding to a temperature of 150 C. Caesium and rubidium vapours giving the same pressure at the same temperature may be used together. The rare gas may be argon or neon at a pressure of a few mms. Oxide cathodes as described in Specification 344,497 are used ; the electrodes in the tube shown each comprise a bar 3 of alkaline earth oxide in a heater winding 2 with two leads 4, 5, the operating current being applied to both leads after the electrodes have been heated. The glass of the envelope 1 is a borosilicate softening above 500 C. and containing alumina and less than 50 per cent of silica as described in Specification 351,245. Heat losses are reduced by sheaths 8 near the electrodes or over the whole tube as described in Specification 341,601. The envelope 1 may be surrounded by an outer glass envelope with the intermediate space evacuated. Caesium or rubidium is introduced as a body or coating 7. Details of a tube filled with neon at 10 mm. and operating with a vapour pressure of 50- 100 mm. corresponding to 450-500 C. are specified. Tube temperatures of 400 C. are also specified. Specifications 5545/03, [Class 39, Electric lamps &c.], 175,032, 269,161, and 306,831, [all in Class 39 (i), Electric lamps, Arc &c.], also are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE400756X | 1931-11-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB400756A true GB400756A (en) | 1933-11-02 |
Family
ID=6401841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24845/32A Expired GB400756A (en) | 1931-11-06 | 1932-09-06 | Improvements in electric lamps |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2042261A (en) |
| FR (1) | FR741605A (en) |
| GB (1) | GB400756A (en) |
| NL (1) | NL34272C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2706784A (en) * | 1950-06-20 | 1955-04-19 | Bell Telephone Labor Inc | Noise source |
| US3259779A (en) * | 1951-11-17 | 1966-07-05 | Westinghouse Electric Corp | Improving efficiency of infrared radiation generation by alkali metal vapor lamps and prolonging their useful lives |
| US2980819A (en) * | 1958-07-01 | 1961-04-18 | Westinghouse Electric Corp | Thermal energy converter |
| NL6511266A (en) * | 1965-08-28 | 1967-03-01 | ||
| US3917971A (en) * | 1974-03-22 | 1975-11-04 | Gte Sylvania Inc | Metal halide discharge lamp having a thermally insulative end coating |
| DE3702481A1 (en) * | 1987-01-28 | 1988-08-11 | Philips Patentverwaltung | GAS DISCHARGE LAMP |
-
0
- NL NL34272D patent/NL34272C/xx active
- FR FR741605D patent/FR741605A/fr not_active Expired
-
1932
- 1932-09-06 GB GB24845/32A patent/GB400756A/en not_active Expired
- 1932-11-03 US US641053A patent/US2042261A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| NL34272C (en) | |
| US2042261A (en) | 1936-05-26 |
| FR741605A (en) | 1933-02-16 |
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