GB441895A - Improvements in or relating to electric gaseous discharge lamps - Google Patents
Improvements in or relating to electric gaseous discharge lampsInfo
- Publication number
- GB441895A GB441895A GB29381/34A GB2938134A GB441895A GB 441895 A GB441895 A GB 441895A GB 29381/34 A GB29381/34 A GB 29381/34A GB 2938134 A GB2938134 A GB 2938134A GB 441895 A GB441895 A GB 441895A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- oct
- discharge lamps
- nitrogen
- hydrogen
- 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
- H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
- H01J61/76—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a filling of permanent gas or gases only
Landscapes
- Discharge Lamp (AREA)
Abstract
441,895. Discharge lamps. BOSCH, F. J. G. VAN DEN, 131, Rue Markelbach, Brussels. Oct. 13, 1934, No. 29381. Convention date, Oct. 27, 1933. Drawings to Specification. [Class 39 (i)] [See also Group XI] In electric lamps of the type in which the light is emitted from spaced electrodes heated to incandescence by a discharge through a gas between them, the filling consists of a rare gas, nitrogen and hydrogen, the amounts of nitrogen and hydrogen being not more than 20 and 5 per cent respectively of the amount of rare gas. The electrodes may consist of two parallel wires of round, flat or other suitable cross-section, spaced 1 to 2À5 mms. apart for mains voltages of from 110 to 220 volts. Wires of circular cross-section may vary in diameter from 0À2 mm. to 1 mm. for ratings of from 10 to 100 watts. The electrodes may be of tungsten or containing tantalum nitrite, and preferably at least one electrode is treated with boron to increase its resistance, for example, by heating it in an atmosphere of boron trichloride.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR441895X | 1933-10-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB441895A true GB441895A (en) | 1936-01-29 |
Family
ID=8900163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB29381/34A Expired GB441895A (en) | 1933-10-27 | 1934-10-13 | Improvements in or relating to electric gaseous discharge lamps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB441895A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE754219C (en) * | 1938-04-24 | 1954-03-15 | Quarzlampen G M B H | High-pressure metal vapor lamp, in particular high-pressure mercury lamp, with fixed, non-activated heating electrodes |
-
1934
- 1934-10-13 GB GB29381/34A patent/GB441895A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE754219C (en) * | 1938-04-24 | 1954-03-15 | Quarzlampen G M B H | High-pressure metal vapor lamp, in particular high-pressure mercury lamp, with fixed, non-activated heating electrodes |
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