GB474192A - Improvements in high-pressure mercury vapour discharge tubes - Google Patents
Improvements in high-pressure mercury vapour discharge tubesInfo
- Publication number
- GB474192A GB474192A GB1970/37A GB197037A GB474192A GB 474192 A GB474192 A GB 474192A GB 1970/37 A GB1970/37 A GB 1970/37A GB 197037 A GB197037 A GB 197037A GB 474192 A GB474192 A GB 474192A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- mercury
- rare gas
- per cent
- pressure
- 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
- H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
- H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
- H01J61/20—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent mercury vapour
Landscapes
- Discharge Lamp (AREA)
Abstract
474,192. Discharge apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Jan. 22,1937, No. 1970. Convention date, Jan. 24, 1936. Drawings to Specification. [Class 39 (i)] In a high-pressure mercury tube which comprises a mixture of neon and argon to facilitate ignition, the pressure of the rare gas is lower than 18 mms. and is preferably lower than 10 mms., and the quantity of rare gas is smaller than 6 atom per cent of the mercury vapour available when the tube has reached normal operation. In one form, a tube adapted to emit visible or ultraviolet rays is housed within an evacuated jacket and contains incandescent electrodes, heated by the discharge, and an auxiliary electrode connected through a resistance to an incandescent electrode. The filling comprises 7 mgs. of mercury per cm. length of the tube and neon to which 0À2 per cent argon has been added. The quantity of rare gas amounts to 3 atom per cent of the available mercury vapour. Dimensions of the tube are contained in the Specification. The invention may be applied to tubes in which the mercury pressure is greater or less than 10 atmospheres and to tubes which may or may not be water cooled.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL474192X | 1936-01-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB474192A true GB474192A (en) | 1937-10-27 |
Family
ID=19786502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1970/37A Expired GB474192A (en) | 1936-01-24 | 1937-01-22 | Improvements in high-pressure mercury vapour discharge tubes |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2177694A (en) |
| BE (1) | BE419602A (en) |
| DE (1) | DE750670C (en) |
| FR (1) | FR816720A (en) |
| GB (1) | GB474192A (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL13401C (en) * | 1921-06-14 | |||
| CH138143A (en) * | 1927-12-19 | 1930-02-15 | Inc Claude Neon Lights | Glow light tube with positive light column. |
| DE529393C (en) * | 1929-02-21 | 1931-07-11 | Patra Patent Treuhand | Process and device for the operation of electric light tubes with gas or steam filling |
| DE657108C (en) * | 1934-11-05 | 1938-02-25 | Philips Patentverwaltung | Artificially cooled high pressure mercury vapor discharge tubes for light emission |
-
0
- BE BE419602D patent/BE419602A/xx unknown
-
1936
- 1936-02-14 DE DEN39151D patent/DE750670C/en not_active Expired
- 1936-12-29 US US118129A patent/US2177694A/en not_active Expired - Lifetime
-
1937
- 1937-01-22 GB GB1970/37A patent/GB474192A/en not_active Expired
- 1937-01-22 FR FR816720D patent/FR816720A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE419602A (en) | |
| DE750670C (en) | 1945-01-25 |
| FR816720A (en) | 1937-08-16 |
| US2177694A (en) | 1939-10-31 |
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