GB625007A - Improvements in and relating to filament mountings - Google Patents
Improvements in and relating to filament mountingsInfo
- Publication number
- GB625007A GB625007A GB19606/44A GB1960644A GB625007A GB 625007 A GB625007 A GB 625007A GB 19606/44 A GB19606/44 A GB 19606/44A GB 1960644 A GB1960644 A GB 1960644A GB 625007 A GB625007 A GB 625007A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filament
- lead
- conductors
- junctions
- oct
- 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
- H01K1/18—Mountings or supports for the incandescent body
Landscapes
- Resistance Heating (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
625,007. Electric incandescent lamps. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 11, 1944, No. 19606. Convention date, Oct. 11, 1943. [Class 39(ii)] [Also in Group XL(a)] A filament mounting for an electric lamp comprises a filament 20 joined to a lead-in conductor 21 and extending to one side thereof, and a cooling-fin 32 secured to the conductor 21 and extending to the other side thereof for the purpose of dissipating heat. In a preferred arrangement for a monoplane tungsten filament, as shown, the ends 30 of the filament are straight and uncoiled and provided with a closely fitting slip-over coil 31 of tungsten, molybdenum, or an alloy thereof, of relatively close pitch. The coil-enclosed ends are arranged laterally of the lead-in conductors, which are made of iron, and welded thereto, the junctions being overlapped by the edges of plates 33 of metal, such as sheet-iron, which are located substantially in the plane of the filament. The plates 33 are preferably welded to the lead-in conductors 21 by spot welds 34, Fig. 3, (not shown) on either side of the junctions between the coilenclosed filament legs and the lead-in conductors, with a further weld at the point where a plate is directly over the said junction. As shown, the lamp is provided with an internal screen 25 supported by one of the lead-in conductors. Specifications 515,091 and 526,924 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US505735A US2366292A (en) | 1943-10-11 | 1943-10-11 | Filament joint structure for electric lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB625007A true GB625007A (en) | 1949-06-21 |
Family
ID=24011607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19606/44A Expired GB625007A (en) | 1943-10-11 | 1944-10-11 | Improvements in and relating to filament mountings |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2366292A (en) |
| GB (1) | GB625007A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2644100A (en) * | 1945-12-28 | 1953-06-30 | Tung Sol Electric Inc | Sealed lighting unit and method of manufacture |
| US2647235A (en) * | 1947-10-30 | 1953-07-28 | Westinghouse Electric Corp | Thermo-responsive measuring device |
| US2738435A (en) * | 1949-12-20 | 1956-03-13 | Ets Claude Paz & Silva | Electrode arrangement |
| US2508063A (en) * | 1949-12-28 | 1950-05-16 | Henry R Gross | Farm light |
| US2848642A (en) * | 1954-11-19 | 1958-08-19 | Westinghouse Electric Corp | Filament mounting |
| US2987643A (en) * | 1956-05-02 | 1961-06-06 | Gen Electric | Filament joint for electric lamps or similar devices |
| GB1313531A (en) * | 1970-04-16 | 1973-04-11 | Thorn Electrical Ind Ltd | Incandescent lamp manufacture |
| US4987343A (en) * | 1988-10-03 | 1991-01-22 | General Electric Company | Vehicle headlamp |
-
1943
- 1943-10-11 US US505735A patent/US2366292A/en not_active Expired - Lifetime
-
1944
- 1944-10-11 GB GB19606/44A patent/GB625007A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2366292A (en) | 1945-01-02 |
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