GB367336A - Process for the manufacture of hot cathodes for electric discharge tubes - Google Patents
Process for the manufacture of hot cathodes for electric discharge tubesInfo
- Publication number
- GB367336A GB367336A GB24459/30A GB2445930A GB367336A GB 367336 A GB367336 A GB 367336A GB 24459/30 A GB24459/30 A GB 24459/30A GB 2445930 A GB2445930 A GB 2445930A GB 367336 A GB367336 A GB 367336A
- Authority
- GB
- United Kingdom
- Prior art keywords
- manufacture
- electric discharge
- aug
- discharge tubes
- mixed
- 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
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
- H01J9/042—Manufacture, activation of the emissive part
Abstract
367,336. Thermionic cathodes. LEDERER, A.,Hermesvilla, Vienna. Aug. 15, 1930, No. 24459. Convention date, Aug. 16, 1929. Void [Published under Sect. 91 of the Acts]. [Class 39 (i).] Thermionic cathodes having emissive layers of pure alkaline-earth metals or alloys are made by reducing alkaline-earth oxides by silicon or other agent. The oxides may be mixed with carbonates, formates, &c., or may be replaced by other reducible compounds. Barium oxide may be mixed with the equivalent amount, or with more or less than this amount, of powdered crystalline silicon, pressed into a tablet and heated to more than 1000‹ C. within the discharge tube to vaporize barium on to the cathode.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT367336X | 1930-08-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB367336A true GB367336A (en) | 1932-02-18 |
Family
ID=3672883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24459/30A Expired GB367336A (en) | 1930-08-16 | 1930-08-15 | Process for the manufacture of hot cathodes for electric discharge tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB367336A (en) |
-
1930
- 1930-08-15 GB GB24459/30A patent/GB367336A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB367336A (en) | Process for the manufacture of hot cathodes for electric discharge tubes | |
| GB543641A (en) | Improvements in or relating to incandescent electrodes for electric-discharge tubes | |
| GB496556A (en) | Improvements in electrodes for electron discharge devices | |
| GB613946A (en) | Improvements in or relating to thermionic tubes having a secondary-emission electrode | |
| GB563623A (en) | Improvements in or relating to cathodes for electron discharge devices | |
| GB216840A (en) | ||
| GB277997A (en) | ||
| GB396514A (en) | Improvements relating to electron emitters and to the manufacture of the same | |
| GB450074A (en) | Improvements in or relating to electron tubes | |
| GB269341A (en) | Improvements in or relating to the manufacture of oxide cathodes for discharge tubes | |
| GB248956A (en) | Improvements in or relating to cathodes for electric discharge devices | |
| GB516455A (en) | Improvements relating to cathode ray tubes | |
| GB459163A (en) | Improvements in and relating to electric discharge tubes | |
| US1957486A (en) | Electron emitter | |
| GB357632A (en) | Low temperature emissive cathodes for electric discharge devices | |
| GB384136A (en) | Improvements in or relating to thermionic valves or electron discharge tubes | |
| GB438343A (en) | Improvements relating to indirectly heated cathodes for cathode ray tubes | |
| GB347500A (en) | Improvements relating to the cathodes of electron discharge tubes or thermionic valves | |
| GB267142A (en) | Improvements in thermionic electrodes | |
| GB450865A (en) | Improvements in or relating to cathode structures for use in cathode ray tubes | |
| GB490652A (en) | Improvements in or relating to electric discharge tubes | |
| GB515036A (en) | Improvements in cathodes for gas or vapour filled electric discharge tubes | |
| GB521818A (en) | Improvements in or relating to vacuum tubes | |
| GB407373A (en) | Method of producing electric discharge tubes | |
| GB517743A (en) | Improvements in electric discharge tubes comprising secondaryemission electrodes |