GB250974A - Improvements in and relating to vibration resisting filaments for electric incandescent lamps and similar devices and method of making the same - Google Patents
Improvements in and relating to vibration resisting filaments for electric incandescent lamps and similar devices and method of making the sameInfo
- Publication number
- GB250974A GB250974A GB10219/26A GB1021926A GB250974A GB 250974 A GB250974 A GB 250974A GB 10219/26 A GB10219/26 A GB 10219/26A GB 1021926 A GB1021926 A GB 1021926A GB 250974 A GB250974 A GB 250974A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filaments
- relating
- making
- same
- similar devices
- 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
- H01K3/02—Manufacture of incandescent bodies
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
250,974. British Thomson-Houston Co., Ltd., (Assignees of Fernberger, H. M.). April 17, 1925, [Convention date]. Filaments.-Materials are incorporated in electric lamp filaments which impart to them a crystalline structure both of interlocked-crystal form, whence a non-sagging character is derived for the small helical filaments of gas-filled lamps, and the small-crystal structure of thoriated tungsten, whence the shock and vibration resisting character of filaments is derived. To produce this structure. less than one-half per cent. each of sodium, potassium, silica, and thoria may be added to the tungsten. Specifications 155,851 and 186,497 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US250974XA | 1925-04-17 | 1925-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB250974A true GB250974A (en) | 1927-05-26 |
Family
ID=21824046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10219/26A Expired GB250974A (en) | 1925-04-17 | 1926-04-19 | Improvements in and relating to vibration resisting filaments for electric incandescent lamps and similar devices and method of making the same |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR614553A (en) |
| GB (1) | GB250974A (en) |
-
1926
- 1926-04-15 FR FR614553D patent/FR614553A/en not_active Expired
- 1926-04-19 GB GB10219/26A patent/GB250974A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR614553A (en) | 1926-12-17 |
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