GB438417A - Improvements in and relating to gas discharge lamps - Google Patents
Improvements in and relating to gas discharge lampsInfo
- Publication number
- GB438417A GB438417A GB21515/35A GB2151535A GB438417A GB 438417 A GB438417 A GB 438417A GB 21515/35 A GB21515/35 A GB 21515/35A GB 2151535 A GB2151535 A GB 2151535A GB 438417 A GB438417 A GB 438417A
- Authority
- GB
- United Kingdom
- Prior art keywords
- neck
- disc
- lamp
- sodium
- exhausted
- 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
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 3
- 229910052708 sodium Inorganic materials 0.000 abstract 3
- 239000011734 sodium Substances 0.000 abstract 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 abstract 2
- 229910052786 argon Inorganic materials 0.000 abstract 1
- 239000010425 asbestos Substances 0.000 abstract 1
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 229910052895 riebeckite Inorganic materials 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten Substances 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
- H01J61/30—Vessels; Containers
- H01J61/34—Double-wall vessels or containers
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
438,417. Electric discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. July 29, 1935, No. 21515. Convention date, July 28, 1934. [Class 39 (i)] [See also Group XI] In a sodium or like electric discharge lamp which is surrounded by a double - walled globe 6, exhausted or filled with carbon dioxide, argon or other gas of low heat conductivity an asbestos or like thermo-insulative refractory gasket 35 is arranged around the neck 9 of the lamp 7 substantially in line with a disc 18 made of similar material and adapted to exclude hot sodium vapour from the neck 9 of the lamp. This neck is exhausted by means of a fine tube 19 passing through the disc 18 and adapted to be sealed by condensed sodium. The current leads 13 also pass through the disc 18 and are connected to a pair of hollow electrodes 14 comprising nickel tubes coated with barium oxide or like electron-emissive substance, and indirectly heated by internal, tungsten resistance coils 17 which are connected by a wire 15.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US737421A US2042153A (en) | 1934-07-28 | 1934-07-28 | Mounting and thermoinsulative jacket for vapor electric devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB438417A true GB438417A (en) | 1935-11-15 |
Family
ID=24963848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21515/35A Expired GB438417A (en) | 1934-07-28 | 1935-07-29 | Improvements in and relating to gas discharge lamps |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2042153A (en) |
| FR (1) | FR792724A (en) |
| GB (1) | GB438417A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3710172A (en) * | 1971-04-26 | 1973-01-09 | Gen Electric | Composite thermionic cathodes for gas discharge devices |
-
1934
- 1934-07-28 US US737421A patent/US2042153A/en not_active Expired - Lifetime
-
1935
- 1935-07-22 FR FR792724D patent/FR792724A/en not_active Expired
- 1935-07-29 GB GB21515/35A patent/GB438417A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2042153A (en) | 1936-05-26 |
| FR792724A (en) | 1936-01-09 |
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