GB358571A - Improvements in electric discharge devices - Google Patents
Improvements in electric discharge devicesInfo
- Publication number
- GB358571A GB358571A GB20949/30A GB2094930A GB358571A GB 358571 A GB358571 A GB 358571A GB 20949/30 A GB20949/30 A GB 20949/30A GB 2094930 A GB2094930 A GB 2094930A GB 358571 A GB358571 A GB 358571A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- cathode
- wire
- insulating
- july
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
358,571. Discharge lamps. BRITISH TALKING PICTURES, Ltd., 193, Wardour Street, London.-(Assignees of Forest, L. de ; 318, East 48th Street, New York, U.S.A.) July 10, 1930, No. 20949. Convention date, July 13, 1929. [Class 39 (i).] In an electric gaseous discharge device adapted particularly for photographic pound recording the cathode 7 is recessed within a sleeve 6 of insulating, heat resisting, material such as porcelain which is encircled by an annular anode 9. The cathode is preferably made of tantalum or molybdenum with a polished end surface located near to the end of the tube 1. The insulating cylinder 6 is mounted upon the end of a glass tube 5 and overhangs the latter to form the recess to receive the cathode, the cathode leading-in wire being passed within the tube 5. The anode lead 11 passes through a tube 8 which extends from the stem tube 3, and a short platinum wire 10 connected to the wire 11 supports the anode ring 9 so that it is close to, but out of contact with, the insulating sleeve 6.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US358571XA | 1929-07-13 | 1929-07-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB358571A true GB358571A (en) | 1931-10-12 |
Family
ID=21885208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20949/30A Expired GB358571A (en) | 1929-07-13 | 1930-07-10 | Improvements in electric discharge devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB358571A (en) |
-
1930
- 1930-07-10 GB GB20949/30A patent/GB358571A/en not_active Expired
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