GB449127A - Improvements in and relating to thermionic devices - Google Patents
Improvements in and relating to thermionic devicesInfo
- Publication number
- GB449127A GB449127A GB25461/35A GB2546135A GB449127A GB 449127 A GB449127 A GB 449127A GB 25461/35 A GB25461/35 A GB 25461/35A GB 2546135 A GB2546135 A GB 2546135A GB 449127 A GB449127 A GB 449127A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- getter
- class
- sept
- welded
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
- H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
- H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering
- H01J7/186—Getter supports
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Gas-Filled Discharge Tubes (AREA)
Abstract
449,127. Thermionic valves. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Sept. 13, 1935, No. 25461. Convention date, Sept. 13, 1934. [Class 39 (i)] A method of gettering an evacuated ther mionic discharge device comprising a metal envelope con taining an electrode and a getter positionec within the envelope either directly upon or near to the wall there of, consists in heating the envelope at a localized position or the exterior wall of the envelope opposite the getter and causing a portion of the heat to reach the getter by conduction through the envelope to flash the getter. In the rectifier shown, a magnesium strip 13 is welded to the interior of the envelope 1 which may be of iron, tin or nickel. The directly-heated cathode 8 comprises loops of coated nickel strip. The header member 3 carries cathode conductor seals 4 of the kind disclosed in Specification 179,779, [Class 36], and the metal evacuating tube 9 sealed as in Specification 449,126, and is welded to a flanged portion of the envelope. The getter may be contained in a pocket or dent in the envelope and baffles or shields may prevent deposition of getter material in undesired parts, as described in Specification 443,767. Alternatively, the getter may be contained in a capsule supported on a rigid wire close to or touching the envelope so as to receive heat therefrom. The method may be applied to devices containing gas or vapour, such as argon or mercury, and to electrostatically or magnetically controlled thermionic arc discharge devices. Specification 300,403, [Class 39 (i)], also is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US744166A US2067817A (en) | 1934-09-15 | 1934-09-15 | Device for gettering metal tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB449127A true GB449127A (en) | 1936-06-22 |
Family
ID=21935005
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25461/35A Expired GB449127A (en) | 1934-09-15 | 1935-09-13 | Improvements in and relating to thermionic devices |
| GB25677/35A Expired GB443767A (en) | 1934-09-15 | 1935-09-16 | Improvements in and relating to thermionic discharge devices |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25677/35A Expired GB443767A (en) | 1934-09-15 | 1935-09-16 | Improvements in and relating to thermionic discharge devices |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2067817A (en) |
| BE (1) | BE411183A (en) |
| DE (1) | DE739183C (en) |
| FR (1) | FR46595E (en) |
| GB (2) | GB449127A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2552933A1 (en) * | 1983-09-30 | 1985-04-05 | Outokumpu Oy | PROCESS FOR ACTIVATION OF A GAS PHASE STABILIZER PLACED IN A PROPORTIONAL GAS FILLER COUNTER |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2422427A (en) * | 1944-01-21 | 1947-06-17 | Gen Electric | Electronic discharge device |
| US2429954A (en) * | 1944-02-02 | 1947-10-28 | Hytron Corp | Insulation in an electron tube |
| US2437097A (en) * | 1945-01-05 | 1948-03-02 | King Lab Inc | Getter structure |
| NL65818C (en) * | 1946-10-11 | |||
| US2755403A (en) * | 1952-10-22 | 1956-07-17 | Gen Electric | Magnetic motion transducer |
| BE527340A (en) * | 1953-04-24 | |||
| US2887602A (en) * | 1956-06-19 | 1959-05-19 | Gen Electric | Ultra-high frequency electric discharge device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1323836A (en) * | 1916-10-06 | 1919-12-02 | Gen Electric | Method of removing gases and apparatus produced thereby. |
| GB251572A (en) * | 1924-12-31 | 1926-04-30 | Ernest Yeoman Robinson | Improvements in or relating to vacuum electric tube devices |
| NL27026C (en) * | 1926-07-19 | |||
| GB300403A (en) * | 1927-10-14 | 1928-11-15 | Philips Nv | Improvements relating to thermionic valves or electron discharge tubes |
| FR646813A (en) * | 1928-01-07 | 1928-11-16 | Adaptation of magnesium in high emission lamps | |
| DE551178C (en) * | 1929-05-29 | 1932-05-30 | C H F Mueller Akt Ges | Process for creating a high vacuum in x-ray tubes |
| NL41681C (en) * | 1931-10-22 |
-
1934
- 1934-09-15 US US744166A patent/US2067817A/en not_active Expired - Lifetime
-
1935
- 1935-09-07 BE BE411183D patent/BE411183A/xx unknown
- 1935-09-09 FR FR46595D patent/FR46595E/en not_active Expired
- 1935-09-09 DE DEA77011D patent/DE739183C/en not_active Expired
- 1935-09-13 GB GB25461/35A patent/GB449127A/en not_active Expired
- 1935-09-16 GB GB25677/35A patent/GB443767A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2552933A1 (en) * | 1983-09-30 | 1985-04-05 | Outokumpu Oy | PROCESS FOR ACTIVATION OF A GAS PHASE STABILIZER PLACED IN A PROPORTIONAL GAS FILLER COUNTER |
| GB2147455A (en) * | 1983-09-30 | 1985-05-09 | Outokumpu Oy | Activating a gas phase stabilizer in a proportional counter |
Also Published As
| Publication number | Publication date |
|---|---|
| US2067817A (en) | 1937-01-12 |
| BE411183A (en) | 1935-10-31 |
| DE739183C (en) | 1943-09-14 |
| FR46595E (en) | 1936-07-10 |
| GB443767A (en) | 1936-03-05 |
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