GB498092A - Improvements relating to incandescent electric lamps - Google Patents
Improvements relating to incandescent electric lampsInfo
- Publication number
- GB498092A GB498092A GB31749/37A GB3174937A GB498092A GB 498092 A GB498092 A GB 498092A GB 31749/37 A GB31749/37 A GB 31749/37A GB 3174937 A GB3174937 A GB 3174937A GB 498092 A GB498092 A GB 498092A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wires
- mandrel
- plaited
- helices
- nov
- 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
- H01K1/02—Incandescent bodies
- H01K1/14—Incandescent bodies characterised by the shape
Landscapes
- Resistance Heating (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
498,092. Electric incandescent lamp filaments. DYCK, A. VAN. Nov. 18, 1937, Nos. 31749 and 31750. Convention dates, Nov. 18, 1936 and Oct. 29, 1937. [Class 39 (ii)] Illuminating bodies or filaments are made by coiling helically into compact shape a long thin sleeve or tube having its walls formed of a number of fine wires of refractory metal, woven, plaited, or braided together. For example the wires may be plaited upon a mandrel, preferably of cylindrical cross-section, and then coiled helically upon a secondary mandrel, these mandrels consisting of brass, copper, steel or molybdenum, so that either or both of them may be removed chemically or otherwise, in known manner, after completion of the filament. Alternatively the mandrels may consist of infusible and refractory materials, e.g. asbestos, which are bad conductors of electricity but adapted to emit luminous radiation. The fine wires or component elements of the metal sleeves may be of circular, oval, rectangular, or other cross-section. The example shows a method of forming a metal sleeve by winding wires 1, 2 along parallel helices upon a mandrel a with wires 3, 4 along parallel helices of opposite hand to the first two, these pairs of helices crossing one another. When completed the wires form a closely plaited sheath upon the mandrel, as shown in Fig. 2.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE418466A BE418466A (en) | 1936-11-18 | 1936-11-18 | Improvements to electric incandescent lamps and the like |
BE424340A BE424340A (en) | 1936-11-18 | 1937-10-29 | Improvements to electric incandescent lamps and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB498092A true GB498092A (en) | 1939-01-03 |
Family
ID=82068774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB31749/37A Expired GB498092A (en) | 1936-11-18 | 1937-11-18 | Improvements relating to incandescent electric lamps |
Country Status (7)
Country | Link |
---|---|
US (1) | US2126155A (en) |
BE (2) | BE418466A (en) |
CH (1) | CH205672A (en) |
DE (1) | DE744148C (en) |
FR (1) | FR829413A (en) |
GB (1) | GB498092A (en) |
NL (1) | NL51572C (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE960369C (en) * | 1953-06-19 | 1957-03-21 | Daimler Benz Ag | Electric light bulb for direction indicators |
US3073986A (en) * | 1960-04-20 | 1963-01-15 | Gen Electric | Electric incandescent lamp |
US3356883A (en) * | 1964-12-27 | 1967-12-05 | Sylvania Electric Prod | Florescent lamp having electrodes comprising a tubular braid and an additional wire coiled about the same space |
US3423622A (en) * | 1966-07-05 | 1969-01-21 | Sylvania Electric Prod | Electrical filament support device |
US4283653A (en) * | 1979-09-17 | 1981-08-11 | Duro-Test Corporation | High emissivity filament for energy conserving incandescent lamps with infrared radiation returning envelopes |
JP4470084B2 (en) * | 2001-03-06 | 2010-06-02 | 河北ライティングソリューションズ株式会社 | light bulb |
US6737616B1 (en) | 2003-04-02 | 2004-05-18 | Tutco, Inc. | Open coil electric resistance heater using twisted resistance wires and methods of making |
-
1936
- 1936-11-18 BE BE418466A patent/BE418466A/en unknown
-
1937
- 1937-10-29 BE BE424340A patent/BE424340A/en unknown
- 1937-11-11 CH CH205672D patent/CH205672A/en unknown
- 1937-11-12 US US174223A patent/US2126155A/en not_active Expired - Lifetime
- 1937-11-15 NL NL85030A patent/NL51572C/en active
- 1937-11-16 DE DED76608D patent/DE744148C/en not_active Expired
- 1937-11-17 FR FR829413D patent/FR829413A/en not_active Expired
- 1937-11-18 GB GB31749/37A patent/GB498092A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL51572C (en) | 1941-11-16 |
CH205672A (en) | 1939-06-30 |
BE418466A (en) | 1936-12-31 |
US2126155A (en) | 1938-08-09 |
FR829413A (en) | 1938-06-27 |
DE744148C (en) | 1944-01-10 |
BE424340A (en) | 1937-10-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB498092A (en) | Improvements relating to incandescent electric lamps | |
GB465119A (en) | Improvements in the manufacture of coiled-coil filaments for incandescent electric lamps and the like | |
GB259810A (en) | Improvements in metallic filaments for electric incandescent lamps and methods of producing said filaments | |
GB642521A (en) | Improvements in and relating to coiled filaments for electric lamps and discharge devices and methods of making the same | |
GB670235A (en) | Manufacture of gaseous conduction lamps | |
GB475006A (en) | Electric incandescent lamp, and a luminous body especially adapted for use in such lamp | |
DE3752039T2 (en) | Compact double filament with holders | |
US1600563A (en) | Incandescent electric lamp | |
GB191406439A (en) | Improvements in and relating to Filaments for Incandescent Electric Lamps and Methods of Making the same. | |
US2069081A (en) | Electric incandescent lamp | |
GB1062819A (en) | Incandescent lamps using coiled-coil filaments | |
US1998958A (en) | Connection for filament and lead wires | |
GB441207A (en) | Improvements in the manufacture of coiled coil filaments for electric incandescent lamps | |
US2167765A (en) | Filament and method of making | |
DE1539506C3 (en) | Electric light bulb | |
GB575175A (en) | Improvements relating to incandescent electric lamps | |
GB788269A (en) | Improvements in or relating to a method of manufacturing a partly internally silvered tubular incandescent lamp | |
GB948859A (en) | Improvements in and relating to incandescent lamps | |
DE568890C (en) | Incandescent body for electric light bulbs | |
JPS61288366A (en) | Bent bulb type fluorescent lamp | |
AT130840B (en) | Gas-filled electric arc lamp. | |
GB198575A (en) | Improvements in and relating to filaments for electric incandescent lamps | |
DE150095C (en) | ||
GB409235A (en) | Improvements in electric lamps | |
GB593143A (en) | Improvements in and relating to filament connections for electric lamps |