GB486066A - Improvements in high-pressure metal-vapour electric discharge lamps - Google Patents
Improvements in high-pressure metal-vapour electric discharge lampsInfo
- Publication number
- GB486066A GB486066A GB1766237A GB1766237A GB486066A GB 486066 A GB486066 A GB 486066A GB 1766237 A GB1766237 A GB 1766237A GB 1766237 A GB1766237 A GB 1766237A GB 486066 A GB486066 A GB 486066A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lead
- tube
- seal
- electrode
- envelope
- 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
- H01J61/30—Vessels; Containers
Abstract
486,066. Metal - vapour lamps. GENERAL ELECTRIC CO., Ltd. (Patent- Treuhand-Ges. f³r Elektrische Gl³hlampen) June 24, 1937, No. 17662. [Class 39 (i)] Relates to high pressure metal-vapour discharge lamps in which the electrodes are disposed near the ends of an elongated envelope, usually of quartz and consists in taking the lead to one or each of the electrodes 2 through the side of the envelope 1 approximately perpendicular to its axis and approximately opposite the electrode so as to diminish the overall length of the lamp. Preferably the lead is surrounded by a tube 3 which serves to protect it and to carry a cap or other terminal 11. As shown the tube 3 is wrapped with asbestos 7 and fits into a metal sleeve 8 secured by a clamp 9. The tube 8 is closed by an insulating plug 10 through which the lead 14 passes to the terminal 11. The seal can be made of a quartz tube 4 which is collapsed on to a strip 5 of molybdenum or tungsten which is joined at its inner end to a stouter support 6 for the electrode and at its outer end to the lead 14. Alternatively, intermediate glasses may be used for the seal. The inner surface of the seal is preferably continuous with the inner surface of the envelope near the electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1766237A GB486066A (en) | 1937-06-24 | 1937-06-24 | Improvements in high-pressure metal-vapour electric discharge lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1766237A GB486066A (en) | 1937-06-24 | 1937-06-24 | Improvements in high-pressure metal-vapour electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB486066A true GB486066A (en) | 1938-05-30 |
Family
ID=10099048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1766237A Expired GB486066A (en) | 1937-06-24 | 1937-06-24 | Improvements in high-pressure metal-vapour electric discharge lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB486066A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2352870A (en) * | 1999-06-15 | 2001-02-07 | Koito Mfg Co Ltd | Discharge bulb with bent lead |
-
1937
- 1937-06-24 GB GB1766237A patent/GB486066A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2352870A (en) * | 1999-06-15 | 2001-02-07 | Koito Mfg Co Ltd | Discharge bulb with bent lead |
| GB2352870B (en) * | 1999-06-15 | 2001-11-07 | Koito Mfg Co Ltd | Discharge bulb |
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