GB373270A - Improvements in or relating to electric discharge lamps - Google Patents
Improvements in or relating to electric discharge lampsInfo
- Publication number
- GB373270A GB373270A GB5540/31A GB554031A GB373270A GB 373270 A GB373270 A GB 373270A GB 5540/31 A GB5540/31 A GB 5540/31A GB 554031 A GB554031 A GB 554031A GB 373270 A GB373270 A GB 373270A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- auxiliary electrode
- anode
- discharge
- cylinder
- 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
- 239000011521 glass Substances 0.000 abstract 1
- 230000000977 initiatory effect Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/02—Details
- H01J17/30—Igniting arrangements
Landscapes
- Discharge Lamp (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
373,270. Discharge lamps. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London, and BRETT, G. F., 23, Cross Flatts Avenue, Dewsbury Road, Leeds. Feb. 21, 1931, No. 5540. [Class 39 (i).] A lamp has an auxiliary electrode formed by dividing the cathode into two parts, one part consisting of a long cylinder and the other part, acting as the auxiliary electrode, consisting of a metal ring or cylinder of small area mounted between the long cylinder and the anode, so that a trigger discharge may be produced for initiating the main discharge. As shown, the auxiliary electrode consists of a wire ring or short cylinder AE mounted between a cylindrical anode A and a long cylindrical cathode C. A glass sleeve S prevents blackening of the envelope. In a modification the auxiliary electrode is mounted around the gap between the anode and cathode, and outside of the main discharge, so that the light from the discharge to the auxiliary electrode is small when viewed from the direction of the cathode. In other arrangements the anode consists of a wire ring, or of a plate or disc at right-angles to the axis of the cathode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5540/31A GB373270A (en) | 1931-02-21 | 1931-02-21 | Improvements in or relating to electric discharge lamps |
| US593979A US1999649A (en) | 1931-02-21 | 1932-02-19 | Electric discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5540/31A GB373270A (en) | 1931-02-21 | 1931-02-21 | Improvements in or relating to electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB373270A true GB373270A (en) | 1932-05-23 |
Family
ID=9798090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5540/31A Expired GB373270A (en) | 1931-02-21 | 1931-02-21 | Improvements in or relating to electric discharge lamps |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1999649A (en) |
| GB (1) | GB373270A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB563767A (en) * | 1942-02-12 | 1944-08-29 | British Thomson Houston Co Ltd | Improvements in modulable electric discharge lamps and operating means therefor |
| US2456854A (en) * | 1943-06-19 | 1948-12-21 | Westinghouse Electric Corp | High-pressure modulator tube |
| US3409793A (en) * | 1949-06-25 | 1968-11-05 | Raytheon Co | Gas-filled discharge device having a grid with an element particularly spaced from the cathode |
| US2881346A (en) * | 1953-09-04 | 1959-04-07 | Mc Graw Edison Co | Discharge gap |
| US3855491A (en) * | 1970-07-28 | 1974-12-17 | Westinghouse Electric Corp | Hollow cathode discharge lamp for generating radiation characteristic of the gas fill within the envelope |
-
1931
- 1931-02-21 GB GB5540/31A patent/GB373270A/en not_active Expired
-
1932
- 1932-02-19 US US593979A patent/US1999649A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1999649A (en) | 1935-04-30 |
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