GB344497A - Improvements in electric discharge tubes - Google Patents
Improvements in electric discharge tubesInfo
- Publication number
- GB344497A GB344497A GB37227/29A GB3722729A GB344497A GB 344497 A GB344497 A GB 344497A GB 37227/29 A GB37227/29 A GB 37227/29A GB 3722729 A GB3722729 A GB 3722729A GB 344497 A GB344497 A GB 344497A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- metal
- wire
- discharge
- lamps
- 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
- 229910052751 metal Inorganic materials 0.000 abstract 6
- 239000002184 metal Substances 0.000 abstract 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 abstract 2
- 239000007789 gas Substances 0.000 abstract 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 abstract 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- 229910052684 Cerium Inorganic materials 0.000 abstract 1
- 229910000722 Didymium Inorganic materials 0.000 abstract 1
- 241000224487 Didymium Species 0.000 abstract 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract 1
- 229910052776 Thorium Inorganic materials 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 150000001342 alkaline earth metals Chemical class 0.000 abstract 1
- 229910052788 barium Inorganic materials 0.000 abstract 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052792 caesium Inorganic materials 0.000 abstract 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 abstract 1
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 229910052746 lanthanum Inorganic materials 0.000 abstract 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 abstract 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract 1
- 239000000395 magnesium oxide Substances 0.000 abstract 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 229910052700 potassium Inorganic materials 0.000 abstract 1
- 239000011591 potassium Substances 0.000 abstract 1
- 239000010453 quartz Substances 0.000 abstract 1
- 229910052761 rare earth metal Inorganic materials 0.000 abstract 1
- 150000002910 rare earth metals Chemical class 0.000 abstract 1
- 229910052701 rubidium Inorganic materials 0.000 abstract 1
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 abstract 1
- 150000004760 silicates Chemical class 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
- 238000005245 sintering Methods 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 239000011734 sodium Substances 0.000 abstract 1
- 229910052712 strontium Inorganic materials 0.000 abstract 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/067—Main electrodes for low-pressure discharge lamps
- H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode
Landscapes
- Discharge Lamp (AREA)
Abstract
344,497. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Patent- Treuhand Ges. f³r Elektrische Gl³hlampen ; 11, Ehrenbergstrasse, Berlin.) Dec. 4, 1929, No. 37227. Convention date, June 29. [Class 39 (i).] Electrodes for glowdischarge lamps and rectifiers comprise a rigid core or rod of electron-emitting substance having httle or no electrical conductivity when cold and a metal member partially enclosing the core or passing therethrough to protrude into the discharge space. The metal is connected to the lead-in wire and an exposed part of the metal is the seat of a preliminary discharge when a starting voltage is applied. This discharge heats the metal and the adjacent part of the core, which then emits electrons and takes part in the discharge. The metal may comprise a sleeve 4 or coating extending up to the front end of the core 5, or a wire helix 9, Fig. 4, or wire gauze about a transverse core 5. In modifications, the metal comprises one or more wires 10, Fig. 5, passing through the core 5. The ends of the wires 10 may be bent over against the core and the lead 3 may be protected from discharges by a magnesium oxide or quartz sleeve 11. The core 5 may be moulded about the wire 10 or perforated to receive the wire. In all forms, the core 5 is made by pressing and sintering oxides or silicates of alkali, alkaline earth or rare earth metals, for example, of potassium, sodium, caesium, rubidium, calcium, barium, strontium, thorium, cerium, lanthanum and didymium. The tube 1, Fig. 1, may be transparent to ultra-violet rays and filled with common gas such as nitrogen or rare gas or mixtures. Specification 315,391, [Class 39 (i), Electric lamps, Arc &c.], is referred to.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE344497X | 1929-06-29 | ||
| US447051A US2251045A (en) | 1929-06-29 | 1930-04-24 | Gaseous electric discharge device |
| US606366A US2251046A (en) | 1929-06-29 | 1932-04-20 | Gaseous electric discharge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB344497A true GB344497A (en) | 1931-03-04 |
Family
ID=32073666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB37227/29A Expired GB344497A (en) | 1929-06-29 | 1929-12-04 | Improvements in electric discharge tubes |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2251046A (en) |
| BE (1) | BE366649A (en) |
| FR (1) | FR687266A (en) |
| GB (1) | GB344497A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2464373A (en) * | 1941-07-14 | 1949-03-15 | Nat Inv S Corp | Fluorescent discharge tube |
| US2431135A (en) * | 1944-03-29 | 1947-11-18 | Westinghouse Electric Corp | Apparatus for coating cathodes |
| US2453118A (en) * | 1946-05-08 | 1948-11-09 | Western Union Telegraph Co | Concentrated arc discharge device |
| US2509649A (en) * | 1947-06-17 | 1950-05-30 | New England Spectrochemical La | Spectrographic treatment of organic materials |
| US2662196A (en) * | 1948-11-04 | 1953-12-08 | Western Union Telegraph Co | Concentrated arc lamp |
| US2670451A (en) * | 1950-01-12 | 1954-02-23 | Westinghouse Electric Corp | Short arc high-pressure vapor discharge lamp |
| FR1478565A (en) * | 1966-03-15 | 1967-04-28 | Lampes Sa | Improvement in electric discharge lamps containing metal iodides including sodium iodide |
-
0
- BE BE366649D patent/BE366649A/xx unknown
-
1929
- 1929-12-04 GB GB37227/29A patent/GB344497A/en not_active Expired
- 1929-12-26 FR FR687266D patent/FR687266A/en not_active Expired
-
1932
- 1932-04-20 US US606366A patent/US2251046A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR687266A (en) | 1930-08-06 |
| BE366649A (en) | |
| US2251046A (en) | 1941-07-29 |
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