GB457644A - Improvements in high pressure metal vapour electric discharge devices - Google Patents
Improvements in high pressure metal vapour electric discharge devicesInfo
- Publication number
- GB457644A GB457644A GB18520/36A GB1852036A GB457644A GB 457644 A GB457644 A GB 457644A GB 18520/36 A GB18520/36 A GB 18520/36A GB 1852036 A GB1852036 A GB 1852036A GB 457644 A GB457644 A GB 457644A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- electrodes
- discharge
- envelope
- high pressure
- 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
- H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
- H01J61/822—High-pressure mercury lamps
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
457,644. Discharge lamps. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, and GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, both in London.-(Assignees of Germer, E. ; 42, Ulricistrasse, Wannsee, Berlin) July 3, 1936, No. 18520. Convention date, July 3, 1935. [Class 39 (i)] The invention relates to high pressure metal vapour electric discharge devices in which the electrodes are of solid thermionically emitting material, and in particular to lamps operated with the line joining the electrodes horizontal. In order to avoid contact of the discharge with the tubular envelope 1 of the lamp, the line joining the electrodes 2, 3 is displaced so far below the axis of the lamp that the discharge column 4 which is bowed upwards is everywhere at a substantial distance from the envelope. The main electrodes may be surrounded by shields also displaced from the axis of the envelope and devices to facilitate starting may be provided. The lamp fitting may be such that the lamp can be inserted only in the correct position. Specification 11140/11, [Class 39 (i)], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE457644X | 1935-07-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB457644A true GB457644A (en) | 1936-12-02 |
Family
ID=6539335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18520/36A Expired GB457644A (en) | 1935-07-03 | 1936-07-03 | Improvements in high pressure metal vapour electric discharge devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB457644A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2345808A1 (en) * | 1977-03-22 | 1977-10-21 | Gte Sylvania Inc | Horizontal halide discharge lamp - has curved quartz glass tube with raised centre and end electrodes lying below tube axis |
-
1936
- 1936-07-03 GB GB18520/36A patent/GB457644A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2345808A1 (en) * | 1977-03-22 | 1977-10-21 | Gte Sylvania Inc | Horizontal halide discharge lamp - has curved quartz glass tube with raised centre and end electrodes lying below tube axis |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB468643A (en) | Improvements in or relating to extra-high-pressure metal vapour electric discharge devices | |
| GB428925A (en) | Improvements in electric discharge tubes | |
| GB448706A (en) | Improvements in and relating to electric discharge lamps | |
| GB457644A (en) | Improvements in high pressure metal vapour electric discharge devices | |
| GB352353A (en) | Improvements in luminous electric discharge tubes | |
| GB361804A (en) | Improvements in electric luminous discharge tubes | |
| GB406611A (en) | Improvements in luminous electric discharge tubes | |
| GB518204A (en) | Improvements in electric discharge lamps | |
| GB429886A (en) | Improvements in and relating to electric lamps | |
| GB489925A (en) | Improvements in and relating to electric discharge lamps | |
| GB412879A (en) | Improvements in electric discharge tubes | |
| GB499682A (en) | Improvements in methods of capping vitreous vessels, such as electric incandescent lamps, without the use of cement | |
| GB414611A (en) | Improvements in luminous sources formed by electric discharge tubes | |
| GB446799A (en) | Improvements in electric discharge lamps | |
| GB419045A (en) | Improvements in luminous electric discharge lamps | |
| GB458896A (en) | Improvements in high pressure metal vapour electric discharge devices | |
| GB407565A (en) | Improvements in luminous electric discharge lamps | |
| GB397887A (en) | Improvements in and relating to electric lamps | |
| GB429364A (en) | Improvements in or relating to electric lamps and the like | |
| GB525465A (en) | Improvements relating to high pressure mercury-vapour electric discharge tubes | |
| GB550581A (en) | Improvements relating to electric discharge lamps | |
| GB495601A (en) | Improvements in electric discharge lamps | |
| GB429368A (en) | Improvements in or relating to electric lamps and the like | |
| GB505172A (en) | Improvements in and relating to electric discharge lamps | |
| GB413959A (en) | Improvements in luminous electric discharge tubes |