GB125944A - Improvements in Quartz Mercury Vapour Lamps. - Google Patents
Improvements in Quartz Mercury Vapour Lamps.Info
- Publication number
- GB125944A GB125944A GB7830/19A GB783019A GB125944A GB 125944 A GB125944 A GB 125944A GB 7830/19 A GB7830/19 A GB 7830/19A GB 783019 A GB783019 A GB 783019A GB 125944 A GB125944 A GB 125944A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mercury
- pressure
- tungsten
- lamp
- 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
- H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
- H01J61/72—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of easily vaporisable metal vapour, e.g. mercury
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
125,944. George, H. April 24, 1918, [Convention date]. Low-pressure metallic-vapour apparatus. - A quartz mercury vapour lamp containing inert gas at a pressure of a few centimetres of mercury is connected to an alternating current source of volt. age sufficient to start the lamp; the current increases until the pressure of the mercury vapour equals or exceeds 1 kilogram per square cm., the inert gas being expelled into a cooler part of the tube such as the reservoirs 5, Fig. 3. A voltage of 500 is suitable for use with neon, and a higher voltage with nitrogen. The temperature may rise to about 700‹ C. The electrodes may consist of tungsten blades 7, connected to tungsten wires 4, and situated above mercury reservoirs 8: or the electrodes may be of mercury. A vertical lamp has an upper electrode of tungsten and a lower electrode of mercury. An inductance may be connected in series.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR125944X | 1918-04-24 | ||
US289330A US1361710A (en) | 1919-04-11 | 1919-04-11 | Quartz mercury-vapor lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
GB125944A true GB125944A (en) | 1920-02-26 |
Family
ID=32773897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7830/19A Expired GB125944A (en) | 1918-04-24 | 1919-03-28 | Improvements in Quartz Mercury Vapour Lamps. |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR493026A (en) |
GB (1) | GB125944A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE743171C (en) * | 1931-05-14 | 1943-12-20 | Patra Patent Treuhand | Process for operating electric light tubes with glow electrodes which, in addition to a noble gas base filling, contain a metal vapor of sufficient pressure to generate light |
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 |
-
1918
- 1918-04-24 FR FR493026A patent/FR493026A/en not_active Expired
-
1919
- 1919-03-28 GB GB7830/19A patent/GB125944A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE743171C (en) * | 1931-05-14 | 1943-12-20 | Patra Patent Treuhand | Process for operating electric light tubes with glow electrodes which, in addition to a noble gas base filling, contain a metal vapor of sufficient pressure to generate light |
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 |
Also Published As
Publication number | Publication date |
---|---|
FR493026A (en) | 1919-07-29 |
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