GB482012A - Improvements in high-pressure mercury vapour electric discharge devices - Google Patents
Improvements in high-pressure mercury vapour electric discharge devicesInfo
- Publication number
- GB482012A GB482012A GB348537A GB348537A GB482012A GB 482012 A GB482012 A GB 482012A GB 348537 A GB348537 A GB 348537A GB 348537 A GB348537 A GB 348537A GB 482012 A GB482012 A GB 482012A
- Authority
- GB
- United Kingdom
- Prior art keywords
- starting
- electrodes
- running
- tungsten
- electric discharge
- 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
- H01J61/06—Main electrodes
- H01J61/073—Main electrodes for high-pressure discharge lamps
- H01J61/0732—Main electrodes for high-pressure discharge lamps characterised by the construction of the electrode
Landscapes
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Lasers (AREA)
Abstract
482,012. Discharge apparatus. GENERAL ELECTRIC CO., Ltd., FRANCIS, V. J., and RYDE, J. W. Feb. 5, 1937, No. 3485. Drawings to Specification. [Class 39 (i)] In a high-pressure metal-vapour device of the type having activated starting electrodes and non-activated running electrodes a baffle is arranged between a starting and a running electrode which increases substantially the amount by which the inter-starting electrode path exceeds the inter-running electrode path. In one form, coated tungsten helices forming the starting electrodes are slipped over tungsten rods forming the main electrodes and tungsten or thoria discs perpendicular to the rods rest against the inner ends of the helices and serve as baffles. Specifications 444,545 and 472,658 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB348537A GB482012A (en) | 1937-02-05 | 1937-02-05 | Improvements in high-pressure mercury vapour electric discharge devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB348537A GB482012A (en) | 1937-02-05 | 1937-02-05 | Improvements in high-pressure mercury vapour electric discharge devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB482012A true GB482012A (en) | 1938-03-22 |
Family
ID=9759210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB348537A Expired GB482012A (en) | 1937-02-05 | 1937-02-05 | Improvements in high-pressure mercury vapour electric discharge devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB482012A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5278474A (en) * | 1989-01-12 | 1994-01-11 | Tokyo Densoku Kabushiki Kaisha | Discharge tube |
-
1937
- 1937-02-05 GB GB348537A patent/GB482012A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5278474A (en) * | 1989-01-12 | 1994-01-11 | Tokyo Densoku Kabushiki Kaisha | Discharge tube |
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