GB313292A - Improvements in and relating to metallic vapour lamps and gaseous discharge devices - Google Patents
Improvements in and relating to metallic vapour lamps and gaseous discharge devicesInfo
- Publication number
- GB313292A GB313292A GB1511628A GB1511628A GB313292A GB 313292 A GB313292 A GB 313292A GB 1511628 A GB1511628 A GB 1511628A GB 1511628 A GB1511628 A GB 1511628A GB 313292 A GB313292 A GB 313292A
- Authority
- GB
- United Kingdom
- Prior art keywords
- discharge
- gas
- lamp
- anode
- vapour
- 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
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel
- H01J61/28—Means for producing, introducing, or replenishing gas or vapour during operation of the lamp
Abstract
313,292. Freedman, P. May 23, 1928. Vacuum tubes; low-pressure metallic-vapour apparatus.-Metal-vapour or gas discharge devices, such as rectifiers, oscillators, and sources of visible and ultra-violet radiation, are so constructed that domestic supply voltages produce first a glow discharge which alters to an arc discharge consequent upon evolution of metal vapour or liberation of one or more permanent gases from sources within the device, the vapour or gases returning to the sources when the device is cold. Charcoal, meerschaum, powdered glass, thoria, silica gel, or palladium black may be used to absorb and liberate the gases, which may consist of argon, neon, helium &c. Caesium and like vapours also may be present. Fig. 1 shows a lamp adapted to be started by heating a mercury pool 9 by means of a resistance 10, the vaporization causing ionization of the gas and a glow discharge to form between the mercury and an anode 7, further vaporization causing the arc discharge to be set up. In the A.C. lamp shown in Fig. 2, a glow discharge occurs immediately between the electrodes 18, 19 and its action on the mercury pool 21 is supplemented by that of an external heater 22. In starting the lamp shown in Fig. 3 a glow discharge is first produced between an auxiliary electrode 27 and the mercury pool 28, and this discharge spreads to the anode 23 and later heats a porous block 24 above the anode and liberates gas therefrom to cause the discharge to change to an arc. A similar lamp is described (Fig. 5, not shown) wherein the porous block 24 is replaced by a filament of porous carbon or palladium through which current is passed to liberate gas. Fig. 4 shows a D.C. lamp having a cathode 33 and an anode 34 and containing a receptacle 35 with a porous filling adapted to be heated by a resistance 37 to liberate gas. This arrangement may be replaced by a porous block of thoria &c. in which the resistance is embedded.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1511628A GB313292A (en) | 1928-05-23 | 1928-05-23 | Improvements in and relating to metallic vapour lamps and gaseous discharge devices |
| FR675636D FR675636A (en) | 1928-05-23 | 1929-05-23 | Improvements made to metal vapor lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1511628A GB313292A (en) | 1928-05-23 | 1928-05-23 | Improvements in and relating to metallic vapour lamps and gaseous discharge devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB313292A true GB313292A (en) | 1929-06-13 |
Family
ID=10053311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1511628A Expired GB313292A (en) | 1928-05-23 | 1928-05-23 | Improvements in and relating to metallic vapour lamps and gaseous discharge devices |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR675636A (en) |
| GB (1) | GB313292A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993011557A1 (en) * | 1991-12-04 | 1993-06-10 | Gte Products Corporation | Low pressure mercury discharge lamp with thermostatic control of mercury vapor pressure |
| WO1994011897A1 (en) * | 1992-11-19 | 1994-05-26 | Datatronic Gmbh | Discharge lamp |
-
1928
- 1928-05-23 GB GB1511628A patent/GB313292A/en not_active Expired
-
1929
- 1929-05-23 FR FR675636D patent/FR675636A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993011557A1 (en) * | 1991-12-04 | 1993-06-10 | Gte Products Corporation | Low pressure mercury discharge lamp with thermostatic control of mercury vapor pressure |
| WO1994011897A1 (en) * | 1992-11-19 | 1994-05-26 | Datatronic Gmbh | Discharge lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| FR675636A (en) | 1930-02-12 |
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