GB219395A - Improvements in electric discharge lamps - Google Patents
Improvements in electric discharge lampsInfo
- Publication number
- GB219395A GB219395A GB1120723A GB1120723A GB219395A GB 219395 A GB219395 A GB 219395A GB 1120723 A GB1120723 A GB 1120723A GB 1120723 A GB1120723 A GB 1120723A GB 219395 A GB219395 A GB 219395A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electric discharge
- electrodes
- supported
- gas
- discharge lamps
- 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
- H01J17/00—Gas-filled discharge tubes with solid cathode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
219,395. Edison Swan Electric Co., Ltd., and Freedman, P. April 25, 1923. Vacuum tubes.-In a gasfilled discharge lamp of the kind in which the gas is purified by a substance 6, e.g. calcium or magnesium, supported on an additional electrode 5, a glass cup or sleeve 7 is provided for intercepting the deposit formed by the action of the purifying substance on the gas. The glass cup on which the deposit accumulates may be formed so as to act as a reflector. A plate of dielectric 11 may be supported between the electrodes 3, 4, and the luminosity of the discharge may be increased by coating the electrodes with thorium oxide.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1120723A GB219395A (en) | 1923-04-25 | 1923-04-25 | Improvements in electric discharge lamps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1120723A GB219395A (en) | 1923-04-25 | 1923-04-25 | Improvements in electric discharge lamps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB219395A true GB219395A (en) | 1924-07-25 |
Family
ID=9981964
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1120723A Expired GB219395A (en) | 1923-04-25 | 1923-04-25 | Improvements in electric discharge lamps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB219395A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE739389C (en) * | 1936-01-26 | 1943-09-24 | Siemens Ag | Arrangement for the evaporation of a getter material from a tube to be heated from the outside and opening into the interior of a discharge vessel |
US2518848A (en) * | 1947-01-10 | 1950-08-15 | Westinghouse Electric Corp | Electrode support |
-
1923
- 1923-04-25 GB GB1120723A patent/GB219395A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE739389C (en) * | 1936-01-26 | 1943-09-24 | Siemens Ag | Arrangement for the evaporation of a getter material from a tube to be heated from the outside and opening into the interior of a discharge vessel |
US2518848A (en) * | 1947-01-10 | 1950-08-15 | Westinghouse Electric Corp | Electrode support |
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