GB248680A - Improvements in gas-filled electric lamps - Google Patents
Improvements in gas-filled electric lampsInfo
- Publication number
- GB248680A GB248680A GB30112/25A GB3011225A GB248680A GB 248680 A GB248680 A GB 248680A GB 30112/25 A GB30112/25 A GB 30112/25A GB 3011225 A GB3011225 A GB 3011225A GB 248680 A GB248680 A GB 248680A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydrogen
- mixture
- chloride
- tungsten
- added
- 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
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/52—Means for obtaining or maintaining the desired pressure within the vessel
- H01K1/54—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering
Landscapes
- Discharge Lamp (AREA)
Abstract
248,680. General Electric Co., Ltd., (Assignees of Patent Treuhand-Ges. f³r Elektrische Gl³hlampen). March 18, 1925, [Convention date]. Arc-lamps. - In gas-filled enclosed-arc lamps having electrodes composed wholly or mainly of tungsten, hydrogen and a gaseous or volatile halogen compound are added to the usual gas filling. Hydrogen chloride is the preferred halogen compound. A mixture of the said gases may be added directly to the filling, or substances may be introduced into the lamp which produce the mixture while the lamp is running. If a mixture of hydrogen and tungsten chloride is added, the tungsten chloride is decomposed and hydrogen chloride produced. If hydrogen chloride alone is introduced into the usual gas filling, some of it is decomposed and the requisite hydrogen produced.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE248680X | 1925-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB248680A true GB248680A (en) | 1926-03-11 |
Family
ID=5935615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30112/25A Expired GB248680A (en) | 1925-03-18 | 1925-11-28 | Improvements in gas-filled electric lamps |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR602315A (en) |
| GB (1) | GB248680A (en) |
-
1925
- 1925-08-20 FR FR602315D patent/FR602315A/en not_active Expired
- 1925-11-28 GB GB30112/25A patent/GB248680A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR602315A (en) | 1926-03-17 |
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