GB349927A - Improvements in and relating to electric discharge devices - Google Patents
Improvements in and relating to electric discharge devicesInfo
- Publication number
- GB349927A GB349927A GB2958/30A GB295830A GB349927A GB 349927 A GB349927 A GB 349927A GB 2958/30 A GB2958/30 A GB 2958/30A GB 295830 A GB295830 A GB 295830A GB 349927 A GB349927 A GB 349927A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- ribbon
- helix
- cathode
- crimpings
- 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
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 4
- 238000002788 crimping Methods 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 229910052759 nickel Inorganic materials 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052753 mercury Inorganic materials 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
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
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/50—Thermionic-cathode tubes
- H01J17/52—Thermionic-cathode tubes with one cathode and one anode
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/046—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electron Sources, Ion Sources (AREA)
- Lasers (AREA)
Abstract
349,927. Discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Elder, F. R. ; 1100, Palmer Avenue, Schenectady, New York, U.S.A.) Jan. 28, 1930, No. 2958. Convention date, Jan. 28, 1929. [Class 39 (i).] Vapour-discharge devices are provided with a (cupshaped anode 4, Fig. 1, providing an electrostatically shielded region within which the metal support 5 is secured to the anode, the support 5 being covered by an insulating tube 8 from its join with the anode to its seal 7 through the envelope 1. A glass sleeve 10 fitting closely around the tube 8 protects the seal 7 and extends into the region inside the anode. The anode 4 is of carbon shaped to avoid sharp corners. In a power rectifier, the arrangement prevents arcing to the anode or its supports during the inverse half of the cycle. The cathode may comprise a nickel cylinder 2 coated on one or both sides with alkaline-earth electron-emitting material and also forming a heat-screen around the heater 3. Mercury 18 provides vapour producing positive ions and neutralizing the spacecharge. In a modification, Fig. 2, a directly-heated cathode comprises a crimped nickel ribbon 15 formed into a helix, flanged metal shields 17 being carried by one of the leads 14 and the ends of the ribbon 15 being formed into sleeves 16 welded to the leads 14. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the termination of the sleeve 10 above the anode and the construction of the ribbon cathode of Fig. 2 with the crimpings at an angle to the ribbon depending on the pitch of the helix and so formed that, in each trough, heat from one side is reflected back from the other. The crimpings may be longitudinal of the ribbon and the ribbon may be formed into a horizontal helix or spiral. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US335406A US1980855A (en) | 1929-01-28 | 1929-01-28 | Electric discharge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB349927A true GB349927A (en) | 1931-05-28 |
Family
ID=23311633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2958/30A Expired GB349927A (en) | 1929-01-28 | 1930-01-28 | Improvements in and relating to electric discharge devices |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1980855A (en) |
| FR (1) | FR37922E (en) |
| GB (1) | GB349927A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2425090A (en) * | 1942-08-24 | 1947-08-05 | Eitel Mccullough Inc | Method of making cathodes |
| US2521364A (en) * | 1946-01-04 | 1950-09-05 | Rca Corp | Electron discharge device for high frequency |
| US2621625A (en) * | 1948-03-25 | 1952-12-16 | Nat Res Corp | Vapor coating device |
| US2580988A (en) * | 1948-04-15 | 1952-01-01 | Raytheon Mfg Co | Electron discharge device |
| US2789150A (en) * | 1955-05-25 | 1957-04-16 | Nat Res Corp | Heat reservoir and electrode for production of metals in skull type furnace |
-
1929
- 1929-01-28 US US335406A patent/US1980855A/en not_active Expired - Lifetime
-
1930
- 1930-01-28 GB GB2958/30A patent/GB349927A/en not_active Expired
- 1930-01-28 FR FR37922D patent/FR37922E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1980855A (en) | 1934-11-13 |
| FR37922E (en) | 1931-02-07 |
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