GB829147A - Improvements in and relating to electron discharge apparatus - Google Patents
Improvements in and relating to electron discharge apparatusInfo
- Publication number
- GB829147A GB829147A GB1944757A GB1944757A GB829147A GB 829147 A GB829147 A GB 829147A GB 1944757 A GB1944757 A GB 1944757A GB 1944757 A GB1944757 A GB 1944757A GB 829147 A GB829147 A GB 829147A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drawn
- tube
- cathode
- sliced
- discs
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
- H01J3/02—Electron guns
- H01J3/027—Construction of the gun or parts thereof
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Solid Thermionic Cathode (AREA)
Abstract
829,147. Thermionic cathode constructions. MULLARD Ltd. May 9, 1958 [June 20, 1957], No. 19447 /57. Class 39(1). [Also in Group XXII] A cathode is manufactured by introducing one or more metallic elements carrying emissive material into a metallic tube which is then reduced in cross-section by mechanical treatment such as drawing or swaging, the resulting structure being sliced across transversely to provide a disc which forms the cathode face. The emissive material may be coated on to wires or foil, which is introduced into an outer nickel, cobalt, or platinum tube before drawing down. Such drawn-down tubes may be placed in an outer tube, and further drawn down. Further outer tubes may be drawn over the original outer tube. The discs are sliced off to a thickness of 50-300 microns, or thicker discs may be filed or turned down. Two specific examples are given.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1944757A GB829147A (en) | 1957-06-20 | 1957-06-20 | Improvements in and relating to electron discharge apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1944757A GB829147A (en) | 1957-06-20 | 1957-06-20 | Improvements in and relating to electron discharge apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB829147A true GB829147A (en) | 1960-02-24 |
Family
ID=10129531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1944757A Expired GB829147A (en) | 1957-06-20 | 1957-06-20 | Improvements in and relating to electron discharge apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB829147A (en) |
-
1957
- 1957-06-20 GB GB1944757A patent/GB829147A/en not_active Expired
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