GB698875A - Improvements in or relating to metal vapour electric discharge tubes - Google Patents
Improvements in or relating to metal vapour electric discharge tubesInfo
- Publication number
- GB698875A GB698875A GB430250A GB430250A GB698875A GB 698875 A GB698875 A GB 698875A GB 430250 A GB430250 A GB 430250A GB 430250 A GB430250 A GB 430250A GB 698875 A GB698875 A GB 698875A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- tube
- liquid
- discharge
- flared
- 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
- H01J13/00—Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes
- H01J13/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0072—Disassembly or repair of discharge tubes
- H01J2893/0073—Discharge tubes with liquid poolcathodes; constructional details
Landscapes
- Lasers (AREA)
Abstract
698,875. Metal-vapour discharge apparatus. DELANY, B. P., and COPELAND, P. L. Feb. 20, 1950, No. 4302/50..Class 39(i) A discharge tube having a liquid cathode is provided with a solid supplementary cathode arranged above and connected to the liquid cathode to enlarge the active cathode area whilst constricting the discharge on to the surface of the liquid cathode. A tube 1, Fig. 1, comprises a tantalum or nickel anode 2, a mercury or caesium cathode 3 and a frustoconical tantalum supplementary cathode 5 which facilitates the production of a glow discharge and the subsequent formation of the cathode spot; it is connected through the lead-in support 4 to the cathode 3. A clearance 6 may be provided between the member 5 and the tube or it may be in contact therewith. In another form, a glass funnel or flared tube is sealed at its upper end to the tube so that its lower end dips into the liquid cathode and is 'coated internally with tungsten or silicon; the lower end of the flared tube may be flattened. In a further form, a straight or flared glass tube 12, Fig. 3, is sealed to the tube and carries a copper perforated plate cathode 16 connected to the cathode 3 by metal wires 17a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB430250A GB698875A (en) | 1950-02-20 | 1950-02-20 | Improvements in or relating to metal vapour electric discharge tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB430250A GB698875A (en) | 1950-02-20 | 1950-02-20 | Improvements in or relating to metal vapour electric discharge tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB698875A true GB698875A (en) | 1953-10-28 |
Family
ID=9774599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB430250A Expired GB698875A (en) | 1950-02-20 | 1950-02-20 | Improvements in or relating to metal vapour electric discharge tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB698875A (en) |
-
1950
- 1950-02-20 GB GB430250A patent/GB698875A/en not_active Expired
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