GB465870A - Improvements in and relating to electric gaseous discharge devices - Google Patents
Improvements in and relating to electric gaseous discharge devicesInfo
- Publication number
- GB465870A GB465870A GB34299/36A GB3429936A GB465870A GB 465870 A GB465870 A GB 465870A GB 34299/36 A GB34299/36 A GB 34299/36A GB 3429936 A GB3429936 A GB 3429936A GB 465870 A GB465870 A GB 465870A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lead
- lamp
- envelope
- cement
- dec
- 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
- Discharge Lamps And Accessories Thereof (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
Abstract
465,870. Discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 14, 1936, No. 34299. Convention date, Dec. 16, 1935. [Class 39 (i)] Relates to electric gaseous discharge tubes particularly lamps, operating at high temperatures and consists in the provision of means for preventing uneven cooling without enclosing the tubes in outer jackets. As shown a mercury vapour discharge lamp 1 is connected to the cap 12 by a tubular heat-insulating member 10 which functions to prevent the cooling of the corresponding end of the tube and forms a housing for the leads. The member 10 fits over a reduced part of the lamp and is secured thereto by a heatresisting cement 11 such as a mixture of asbestos, aluminium sulphate and zirconium silicate. A similar or other cement 13 may be used to attach the cap 12. The lamp has electrodes 5, 6 which may be of the kind described in Specification 446,860, fed by leads 3, 4, the lead 4 extending along one side of the lamp in a sleeve 7. A tungsten &c. wire 8 is connected to the lead 4 near the electrode 6 and is fused to the envelope at the pip 9 for the purpose of supporting the lead and also maintaining the temperature of this end of the envelope. An auxiliary starting electrode 2 is .connected through atubular resistance 15 to the lead 4.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US54765A US2087743A (en) | 1935-12-16 | 1935-12-16 | Electric gaseous discharge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB465870A true GB465870A (en) | 1937-05-18 |
Family
ID=21993381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34299/36A Expired GB465870A (en) | 1935-12-16 | 1936-12-14 | Improvements in and relating to electric gaseous discharge devices |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2087743A (en) |
| FR (1) | FR815084A (en) |
| GB (1) | GB465870A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2478969A (en) * | 1944-07-19 | 1949-08-16 | Sylvania Electric Prod | Electron tube mount stabilizer support |
| US3885185A (en) * | 1974-03-29 | 1975-05-20 | Ralph E Tilley | Incandescent lamp |
-
1935
- 1935-12-16 US US54765A patent/US2087743A/en not_active Expired - Lifetime
-
1936
- 1936-12-14 GB GB34299/36A patent/GB465870A/en not_active Expired
- 1936-12-16 FR FR815084D patent/FR815084A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2087743A (en) | 1937-07-20 |
| FR815084A (en) | 1937-07-05 |
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