GB642434A - Improvements in and relating to electric discharge devices - Google Patents
Improvements in and relating to electric discharge devicesInfo
- Publication number
- GB642434A GB642434A GB30470/47A GB3047047A GB642434A GB 642434 A GB642434 A GB 642434A GB 30470/47 A GB30470/47 A GB 30470/47A GB 3047047 A GB3047047 A GB 3047047A GB 642434 A GB642434 A GB 642434A
- Authority
- GB
- United Kingdom
- Prior art keywords
- header
- metal
- graphite
- nov
- insulated
- 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
- H01J13/00—Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes
- H01J13/02—Details
- H01J13/22—Screens, e.g. for preventing or eliminating arcing-back
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
642,434. Metal-vapour discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 17, 1947, No. 30470. Convention date, Nov. 20, 1946. [Class 39 (i)] In a liquid-electrode discharge tube, the means for forming the cathode spot is surrounded by a baffle which comprises an axially arranged stack of dish-shaped annular members and a further member forming a continuous surface between the anode and cathode. In the preferred form, the baffle comprises a graphite dished member 17 and frusto-conical graphite rings 15 which are supported by a metal header 6 through insulators 13, studs 12 and graphite spacers 16. Controlling potentials may be applied to the screen through a lead 20, insulated by a glass bead 21 from the header. An ignition starter 8 has a lead-in 11 insulated by a glass tube from a metal evelet 10 in the header 6, which is welded to the steel container 1. A molybdenum ring secured by straps 24 to the header, limits vibration of the mercury and prevents foreign matter from flowing to the cathode spot.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US642434XA | 1946-11-20 | 1946-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB642434A true GB642434A (en) | 1950-09-06 |
Family
ID=22054556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30470/47A Expired GB642434A (en) | 1946-11-20 | 1947-11-17 | Improvements in and relating to electric discharge devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB642434A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1123054B (en) * | 1959-04-24 | 1962-02-01 | Siemens Ag | Single-anodic converter discharge vessel with permanent excitation and stain fixer |
-
1947
- 1947-11-17 GB GB30470/47A patent/GB642434A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1123054B (en) * | 1959-04-24 | 1962-02-01 | Siemens Ag | Single-anodic converter discharge vessel with permanent excitation and stain fixer |
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