GB499733A - Improvements in metal-vapour electric discharge lamps - Google Patents
Improvements in metal-vapour electric discharge lampsInfo
- Publication number
- GB499733A GB499733A GB19917/38A GB1991738A GB499733A GB 499733 A GB499733 A GB 499733A GB 19917/38 A GB19917/38 A GB 19917/38A GB 1991738 A GB1991738 A GB 1991738A GB 499733 A GB499733 A GB 499733A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- electrode
- electric discharge
- discharge lamps
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B25/00—Packaging other articles presenting special problems
- B65B25/06—Packaging slices or specially-shaped pieces of meat, cheese, or other plastic or tacky products
- B65B25/065—Packaging slices or specially-shaped pieces of meat, cheese, or other plastic or tacky products of meat
- B65B25/067—Packaging slices or specially-shaped pieces of meat, cheese, or other plastic or tacky products of meat combined with its conservation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
- H01J61/545—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode inside the vessel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
499,733. Metal vapour apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. July 5, 1938, No. 19917. Convention date, July 7, 1937. [Class 39 (i)] A metal-vapour discharge tube, which has two main electrodes 2, 3 and one auxiliary electrode 4, is mounted in a bulb 6, provided with a cap 7, in such manner that the auxiliary electrode, and the seal therefor, is associated with the main electrode 3 which is remote from the cap 7. By this arrangement, the temperature of the seal is kept low. The filling of the discharge tube may consist of cadmium or zinc or of mercury at five atmospheres. The electrode 4 is connected to the main electrode 2 through a resistance 14. Nitrogen at a pressure of 50 cms. may be inserted in the bulb 6.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE205007X | 1937-07-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB499733A true GB499733A (en) | 1939-01-27 |
Family
ID=5784886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19917/38A Expired GB499733A (en) | 1937-07-07 | 1938-07-05 | Improvements in metal-vapour electric discharge lamps |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH205007A (en) |
| FR (1) | FR840247A (en) |
| GB (1) | GB499733A (en) |
| NL (2) | NL50951C (en) |
-
0
- NL NL50591D patent/NL50591C/xx active
- NL NL50951D patent/NL50951C/xx active
-
1938
- 1938-07-05 GB GB19917/38A patent/GB499733A/en not_active Expired
- 1938-07-05 FR FR840247D patent/FR840247A/en not_active Expired
- 1938-07-06 CH CH205007D patent/CH205007A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR840247A (en) | 1939-04-21 |
| NL50951C (en) | |
| CH205007A (en) | 1939-05-31 |
| NL50591C (en) |
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