GB435778A - Improvements in electric discharge devices - Google Patents
Improvements in electric discharge devicesInfo
- Publication number
- GB435778A GB435778A GB2219334A GB2219334A GB435778A GB 435778 A GB435778 A GB 435778A GB 2219334 A GB2219334 A GB 2219334A GB 2219334 A GB2219334 A GB 2219334A GB 435778 A GB435778 A GB 435778A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bodies
- electrodes
- central parts
- envelope
- supported
- 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
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/045—Thermic screens or reflectors
Landscapes
- Discharge Lamp (AREA)
Abstract
435,778. Discharge apparatus. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Patent Treuhand- Ges. fur Elektrische Gl³hlampen; 11, Ehrenbergstrasse, Berlin) July 30, 1934, No. 22193. [Class 39 (i)] To avoid condensation of vapour on the cooler central parts of the envelope of a vapour discharge device such as a sodium lamp, one or more bodies 8 of high thermal conductivitv each extend from the neighbourhood of an electrode 3 towards the central parts to convey heat to the central parts, the bodies being so arranged that the discharge passes between the bodies and the envelope 1 at least at the parts remote from the electrodes 3. The bodies comprise plates of iron, nickel or copper, corrugated or of cruciform cross-section and joined to cylinders 6 which surround the electrodes 3 and are supported from pinches 5. The bodies are connected together by glass rods 9 and may serve as auxiliary starting electrodes. In a modification, the bodies 8 are supported by spring arms from the walls 1. Specifications 369,882 and 393,515 are referred to.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP69733D DE624290C (en) | 1934-07-21 | 1934-07-21 | Electric low-pressure metal halide tubes |
GB2219334A GB435778A (en) | 1934-07-30 | 1934-07-30 | Improvements in electric discharge devices |
US27233A US2056634A (en) | 1934-07-21 | 1935-06-18 | Gaseous electric discharce tubular lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2219334A GB435778A (en) | 1934-07-30 | 1934-07-30 | Improvements in electric discharge devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB435778A true GB435778A (en) | 1935-09-27 |
Family
ID=10175460
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2219334A Expired GB435778A (en) | 1934-07-21 | 1934-07-30 | Improvements in electric discharge devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB435778A (en) |
-
1934
- 1934-07-30 GB GB2219334A patent/GB435778A/en not_active Expired
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