GB431450A - Improvements in or relating to artificially cooled mercury vapour discharge tubes - Google Patents
Improvements in or relating to artificially cooled mercury vapour discharge tubesInfo
- Publication number
- GB431450A GB431450A GB619235A GB619235A GB431450A GB 431450 A GB431450 A GB 431450A GB 619235 A GB619235 A GB 619235A GB 619235 A GB619235 A GB 619235A GB 431450 A GB431450 A GB 431450A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mercury
- tube
- electrodes
- atmospheres
- added
- 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
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/32—Seals for leading-in conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
- H01J61/822—High-pressure mercury lamps
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Discharge Lamp (AREA)
Abstract
431,450. Discharge apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. Feb. 26, 1935, No. 6192. Convention date, Nov. 6, 1934. [Class 39 (i)] An artificially cooled high-pressure mercury - vapour tube has a filling of a gas such as neon and a mercury vapour pressure greater than 6 atmospheres and is furnished with solid incandescent electrodes which protrude only slightly from a quantity of mercury or amalgam whichpartlysurrounds the electrodes. Cadmium or zinc may be added to the mercury in the form of an amalgam. The correct quantity of mercury may be added by furnishing a quantity of mercury in an auxiliary tube, for example, the exhaust tube, and sealing off the end of this tube so as to expel small quantities of mercury into the main tube whilst observing. the electrical characteristics. In one form, the leads 2 are sealed into the quartz bulb 1 by coatings 3 and caps 4 of the glass described in Specification 431,923. Thin tungsten wires 5 are wound on the ends of the tungsten wires 2 and the combined wires are then oxide-coated. Mercury 6 is added until the electrodes 5 protrude about 1.3 mms., and until the seals between the caps 4 and the tube 1 are covered. In a modification for ultraviolet light production, the quartz tube is narrowed adjacent the electrodes. The mercury pressure in operation is between 6 and 32 atmospheres, for example, 20 atmospheres. The invention is applicable to tubes of the kind described in Specification 431,923.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEN37372D DE711871C (en) | 1934-11-06 | 1934-11-06 | Artificially cooled, closed high-pressure mercury vapor discharge tubes serving to emit rays |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB431450A true GB431450A (en) | 1935-07-08 |
Family
ID=33037646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB619235A Expired GB431450A (en) | 1934-11-06 | 1935-02-26 | Improvements in or relating to artificially cooled mercury vapour discharge tubes |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT153368B (en) |
| CH (1) | CH187533A (en) |
| DE (1) | DE711871C (en) |
| DK (1) | DK57199C (en) |
| FR (1) | FR786388A (en) |
| GB (1) | GB431450A (en) |
| NL (1) | NL53679C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE740922C (en) * | 1939-03-21 | 1943-10-30 | Patra Patent Treuhand | Arrangement for operating a water-cooled high-pressure mercury discharge lamp |
| DE756326C (en) * | 1937-02-20 | 1952-11-17 | Ulrich W Doering | Electric discharge lamp with basic inert gas filling |
| US3363133A (en) * | 1966-02-28 | 1968-01-09 | Sylvania Electric Prod | Electric discharge device having polycrystalline alumina end caps |
| US4481443A (en) * | 1978-05-23 | 1984-11-06 | U.S. Philips Corporation | Short-arc discharge lamp |
| US4581557A (en) * | 1979-01-02 | 1986-04-08 | General Electric Company | Stabilized high intensity discharge lamp |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE754219C (en) * | 1938-04-24 | 1954-03-15 | Quarzlampen G M B H | High-pressure metal vapor lamp, in particular high-pressure mercury lamp, with fixed, non-activated heating electrodes |
| DE875687C (en) * | 1938-10-05 | 1953-05-04 | Electricitaets Ges Sanitas M B | Arrangement for operating a high-pressure mercury vapor lamp with a basic gas filling, non-activated incandescent cathodes heated by the discharge and an elongated arc |
| GB2069228B (en) * | 1979-01-02 | 1983-02-23 | Gen Electric | Stabilised high intensity discharge lamp |
-
1934
- 1934-11-06 DE DEN37372D patent/DE711871C/en not_active Expired
-
1935
- 1935-02-26 NL NL72666A patent/NL53679C/xx active
- 1935-02-26 GB GB619235A patent/GB431450A/en not_active Expired
- 1935-02-27 FR FR786388D patent/FR786388A/en not_active Expired
- 1935-02-27 CH CH187533D patent/CH187533A/en unknown
- 1935-02-27 AT AT153368D patent/AT153368B/en active
- 1935-02-28 DK DK57199D patent/DK57199C/en active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE756326C (en) * | 1937-02-20 | 1952-11-17 | Ulrich W Doering | Electric discharge lamp with basic inert gas filling |
| DE740922C (en) * | 1939-03-21 | 1943-10-30 | Patra Patent Treuhand | Arrangement for operating a water-cooled high-pressure mercury discharge lamp |
| US3363133A (en) * | 1966-02-28 | 1968-01-09 | Sylvania Electric Prod | Electric discharge device having polycrystalline alumina end caps |
| US4481443A (en) * | 1978-05-23 | 1984-11-06 | U.S. Philips Corporation | Short-arc discharge lamp |
| US4581557A (en) * | 1979-01-02 | 1986-04-08 | General Electric Company | Stabilized high intensity discharge lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CH187533A (en) | 1936-11-15 |
| DK57199C (en) | 1940-01-29 |
| AT153368B (en) | 1938-05-10 |
| NL53679C (en) | 1942-12-15 |
| DE711871C (en) | 1941-10-08 |
| FR786388A (en) | 1935-09-02 |
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