GB463430A - - Google Patents
Info
- Publication number
- GB463430A GB463430A GB463430DA GB463430A GB 463430 A GB463430 A GB 463430A GB 463430D A GB463430D A GB 463430DA GB 463430 A GB463430 A GB 463430A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- frame
- rods
- winding
- tubes
- 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
Landscapes
- Electrolytic Production Of Metals (AREA)
Abstract
463,430. Thermionic cathodes. GENERAL ELECTRIC CO., Ltd., and RICHARDS, J. Sept. 27, 1935, Nos. 26771/35 and 2284/36. [Class 39 (i)] [Also in Group X] Fine straight tubes of refractory insulating- material, such as the insulators in indirectly heated thermionic cathodes, are formed by coating a core 1 with a suspension of the material and winding the core in the form of a polygonal helix on a frame of rods 11; these rods are carried by spring-pressed rods 8, whose outward movement during winding is restrained by a side-plate 12. When winding is complete this plate is removed and the springs strain the coated core which is then dried. If the frame is strong enough the coated core is now sintered, but the tubes may be cut in lengths from the frame and then sintered. The insulating material may be supplied from a bath 5 or be sprayed on the core, or the frame with core may be dipped in a bath; the suspension may be made by ball milling a dry mixture of calcined alumina with aluminium hydroxide to which suitable amounts of anhydrous aluminium nitrate and water are added and then ball milled. Multiple bore tubes may be formed by drawing on to the frame two parallel core threads spaced apart the desired distance between the bores. Specification 350,545 is referred to.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB463430A true GB463430A (en) | 1900-01-01 |
Family
ID=1746870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB463430D Expired GB463430A (en) |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB463430A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2875501A (en) * | 1953-03-18 | 1959-03-03 | Clevite Corp | Forming electromechanically sensitive ceramic bodies |
| DE2807613A1 (en) * | 1977-02-22 | 1978-08-24 | Du Pont | SEPARATING DEVICE MADE FROM A RIGID, POROUS INORGANIC HOLLOW FIBER AND METHOD FOR THE USE |
| US4446024A (en) * | 1977-02-22 | 1984-05-01 | E. I. Du Pont De Nemours & Company | Hollow filament product |
-
0
- GB GB463430D patent/GB463430A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2875501A (en) * | 1953-03-18 | 1959-03-03 | Clevite Corp | Forming electromechanically sensitive ceramic bodies |
| DE2807613A1 (en) * | 1977-02-22 | 1978-08-24 | Du Pont | SEPARATING DEVICE MADE FROM A RIGID, POROUS INORGANIC HOLLOW FIBER AND METHOD FOR THE USE |
| US4446024A (en) * | 1977-02-22 | 1984-05-01 | E. I. Du Pont De Nemours & Company | Hollow filament product |
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