GB255098A - Improvements in valves for use in wireless telegraphy - Google Patents
Improvements in valves for use in wireless telegraphyInfo
- Publication number
- GB255098A GB255098A GB17327/26A GB1732726A GB255098A GB 255098 A GB255098 A GB 255098A GB 17327/26 A GB17327/26 A GB 17327/26A GB 1732726 A GB1732726 A GB 1732726A GB 255098 A GB255098 A GB 255098A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wire
- thoriated
- current
- coarse
- valves
- 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
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/15—Cathodes heated directly by an electric current
Landscapes
- Solid Thermionic Cathode (AREA)
Abstract
255,098. Hawadier, J. A. M. July 10, 1925, [Convention date]. Vacuum tubes.-A cathode to be heated by alternating current comprises two filaments b, d arranged parallel to one another and connected in parallel but so that current at any moment flows in opposite directions in the two. They are made in such a way as to emit electrons at very low temperatures, and so as to show a reduced cooling effect in the interval between alternations of the current. Coarse thoriated wire is suitable; or a coarse wire of tungsten or molybdenum may be wound with a fine thorium or thoriated wire.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR255098X | 1925-07-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB255098A true GB255098A (en) | 1926-11-25 |
Family
ID=8884490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17327/26A Expired GB255098A (en) | 1925-07-10 | 1926-07-10 | Improvements in valves for use in wireless telegraphy |
Country Status (2)
Country | Link |
---|---|
US (1) | US1967207A (en) |
GB (1) | GB255098A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9946199B1 (en) | 2016-09-23 | 2018-04-17 | Clover Technologies Group, Llc | System and method of filling a toner container |
US10162288B2 (en) | 2016-09-23 | 2018-12-25 | Clover Technologies Group, Llc | System and method of remanufacturing a toner container |
-
1926
- 1926-07-01 US US119912A patent/US1967207A/en not_active Expired - Lifetime
- 1926-07-10 GB GB17327/26A patent/GB255098A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US1967207A (en) | 1934-07-17 |
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