GB433233A - Improvements in and relating to electric lamps - Google Patents
Improvements in and relating to electric lampsInfo
- Publication number
- GB433233A GB433233A GB13285/34A GB1328534A GB433233A GB 433233 A GB433233 A GB 433233A GB 13285/34 A GB13285/34 A GB 13285/34A GB 1328534 A GB1328534 A GB 1328534A GB 433233 A GB433233 A GB 433233A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- chromium
- iron
- relating
- alloy
- 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
- H01K1/00—Details
- H01K1/42—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
- H01K1/46—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp supported by a separate part, e.g. base, cap
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/32—Seals for leading-in conductors
- H01J5/40—End-disc seals, e.g. flat header
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0033—Vacuum connection techniques applicable to discharge tubes and lamps
- H01J2893/0034—Lamp bases
- H01J2893/0035—Lamp bases shaped as flat plates, in particular metallic
Landscapes
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
- Resistance Heating (AREA)
Abstract
The filament of an electric incandescent lamp, is mounted on a disc which is sealed to the end of the bulb and is made of an alloy, such as an iron alloy containing 25 per cent of chromium, having the same coefficient of expansion as glass, and to which glass readily seals. The iron chromium alloy preferably used is that known as "Allegheny 55," which contains 67,6 per cent to 71,5 per cent iron, 26 per cent to 30 per cent chromium, with small proportions of manganese, nickel, silicon, and carbon.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US669189A US2084192A (en) | 1933-05-03 | 1933-05-03 | Incandescent lamp and similar device |
| US116583A US2105404A (en) | 1933-05-03 | 1936-12-18 | Incandescent lamp and similar device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB433233A true GB433233A (en) | 1935-08-12 |
Family
ID=26814388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13285/34A Expired GB433233A (en) | 1933-05-03 | 1934-05-02 | Improvements in and relating to electric lamps |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2105404A (en) |
| BE (1) | BE402949A (en) |
| DE (1) | DE627961C (en) |
| GB (1) | GB433233A (en) |
| NL (1) | NL40847C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL102367C (en) * | 1955-03-08 | |||
| US3047765A (en) * | 1959-08-20 | 1962-07-31 | Gen Electric | Base assembly for electric lamps |
| US3118717A (en) * | 1960-04-11 | 1964-01-21 | Horan John Joseph | Elastic lamps, constructions, mountings and receptacles |
-
0
- NL NL40847D patent/NL40847C/xx active
- BE BE402949D patent/BE402949A/xx unknown
-
1934
- 1934-02-17 DE DEP68969D patent/DE627961C/en not_active Expired
- 1934-05-02 GB GB13285/34A patent/GB433233A/en not_active Expired
-
1936
- 1936-12-18 US US116583A patent/US2105404A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE627961C (en) | 1936-03-26 |
| BE402949A (en) | |
| US2105404A (en) | 1938-01-11 |
| NL40847C (en) |
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