GB455256A - Improvements in and relating to electrodes for electric discharge devices - Google Patents
Improvements in and relating to electrodes for electric discharge devicesInfo
- Publication number
- GB455256A GB455256A GB30941/35A GB3094135A GB455256A GB 455256 A GB455256 A GB 455256A GB 30941/35 A GB30941/35 A GB 30941/35A GB 3094135 A GB3094135 A GB 3094135A GB 455256 A GB455256 A GB 455256A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrolyte
- graphite
- acid
- electric discharge
- electrodes
- 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
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0048—Tubes with a main cathode
- H01J2893/0051—Anode assemblies; screens for influencing the discharge
Abstract
455,256. Electrolytic purification of graphite. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Nov. 8, 1935, No. 30941. Convention date, Nov. 8, 1934. Drawings to Specification. [Class 41] The graphite electrodes of electric discharge devices containing metallic vapour are purified, particularly from alkaline or alkaline earth compounds which readily emit electrons or positive ions by electrolysis in which the graphite is the anode. Preferably a strong acid, e.g. hydrochloric acid is used as the electrolyte, and a further treatment may be given with a weak electrolyte, e.g. water containing a weak acid as carbonic acid. The electrolyte may be heated. Before assembly in the discharge apparatus, the graphite parts are heated in an air-tight or vacuum furnace to about 1500‹ C., to remove final traces of electrolyte.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE455256X | 1934-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB455256A true GB455256A (en) | 1936-10-16 |
Family
ID=6539022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30941/35A Expired GB455256A (en) | 1934-11-08 | 1935-11-08 | Improvements in and relating to electrodes for electric discharge devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB455256A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2494425A (en) * | 1943-03-15 | 1950-01-10 | Hartford Nat Bank & Trust Co | Electrolytically polished graphite anode |
| DE1058640B (en) * | 1958-05-24 | 1959-06-04 | Bbc Brown Boveri & Cie | Converter anode with subdivided basket grille |
-
1935
- 1935-11-08 GB GB30941/35A patent/GB455256A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2494425A (en) * | 1943-03-15 | 1950-01-10 | Hartford Nat Bank & Trust Co | Electrolytically polished graphite anode |
| DE1058640B (en) * | 1958-05-24 | 1959-06-04 | Bbc Brown Boveri & Cie | Converter anode with subdivided basket grille |
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