GB439243A - An improved method of evacuating vessels, more particularly lamp bulbs - Google Patents
An improved method of evacuating vessels, more particularly lamp bulbsInfo
- Publication number
- GB439243A GB439243A GB15847/34A GB1584734A GB439243A GB 439243 A GB439243 A GB 439243A GB 15847/34 A GB15847/34 A GB 15847/34A GB 1584734 A GB1584734 A GB 1584734A GB 439243 A GB439243 A GB 439243A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbonyl
- vessel
- getter
- improved method
- metal
- 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
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
- H01K3/22—Exhausting, degassing, filling, or cleaning vessels
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Discharge Lamp (AREA)
Abstract
439,243. Obtaining high vacua. ASTRON AKT.-GES., Krierns, near Lucerne, Switzerland, and TRENZEN, C., Venlo, Holland. May 28, 1934, No. 15847. Convention date, Dec. 4, 1933. [Class 8 (i)] [See also Group XI] A metal carbonyl is introduced into a partially evacuated lamp bulb or other vessel, and the vessel is heated, decomposing the carbonyl, which combines with residual gases and enables them to be extracted by the vacuum pump. The metal of the carbonyl may be deposited as a mirror in the vessel. Carbonyl of iron, nickel, molybdenum or tungsten, or a mixture of them may be employed. Phosphorus solution may be used in conjunction with the carbonyl as a getter. The lamp may have a double spiral filament forming a surface for the getter.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH439243X | 1933-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB439243A true GB439243A (en) | 1935-11-28 |
Family
ID=4515141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15847/34A Expired GB439243A (en) | 1933-12-04 | 1934-05-28 | An improved method of evacuating vessels, more particularly lamp bulbs |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2099874A (en) |
| BE (1) | BE406626A (en) |
| DE (1) | DE632578C (en) |
| GB (1) | GB439243A (en) |
| NL (1) | NL40433C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2742691A (en) * | 1950-04-18 | 1956-04-24 | Ohio Commw Eng Co | Method of making corrosion resistant clad steel |
| US2698810A (en) * | 1950-08-25 | 1955-01-04 | Nat Res Corp | Coating process |
| US3108014A (en) * | 1961-03-13 | 1963-10-22 | Alloyd Corp | Paper metallizing process utilizing iron dodecacarbonyl |
| US3189395A (en) * | 1961-08-29 | 1965-06-15 | Tung Sol Electric Inc | Method of making an incandescent lamp |
-
0
- BE BE406626D patent/BE406626A/xx unknown
- NL NL40433D patent/NL40433C/xx active
-
1934
- 1934-03-22 DE DEA72804D patent/DE632578C/en not_active Expired
- 1934-05-28 GB GB15847/34A patent/GB439243A/en not_active Expired
- 1934-06-09 US US729908A patent/US2099874A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE632578C (en) | 1936-07-10 |
| US2099874A (en) | 1937-11-23 |
| NL40433C (en) | |
| BE406626A (en) |
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