GB465119A - Improvements in the manufacture of coiled-coil filaments for incandescent electric lamps and the like - Google Patents
Improvements in the manufacture of coiled-coil filaments for incandescent electric lamps and the likeInfo
- Publication number
- GB465119A GB465119A GB29984/35A GB2998435A GB465119A GB 465119 A GB465119 A GB 465119A GB 29984/35 A GB29984/35 A GB 29984/35A GB 2998435 A GB2998435 A GB 2998435A GB 465119 A GB465119 A GB 465119A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mandrel
- filament
- coiled
- manufacture
- temperature
- 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
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 2
- 229910052721 tungsten Inorganic materials 0.000 abstract 2
- 239000010937 tungsten Substances 0.000 abstract 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- 239000011733 molybdenum Substances 0.000 abstract 1
- 239000011819 refractory material Substances 0.000 abstract 1
- 239000003870 refractory metal Substances 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4981—Utilizing transitory attached element or associated separate material
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Resistance Heating (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US752016A US2067746A (en) | 1934-11-08 | 1934-11-08 | Lamp filament and method of manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB465119A true GB465119A (en) | 1937-04-30 |
Family
ID=25024482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29984/35A Expired GB465119A (en) | 1934-11-08 | 1935-10-30 | Improvements in the manufacture of coiled-coil filaments for incandescent electric lamps and the like |
Country Status (4)
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2927299A (en) * | 1954-05-20 | 1960-03-01 | Fredrick L Lefebvre | Heater tube mounting |
| US3110098A (en) * | 1960-11-25 | 1963-11-12 | Sylvania Electric Prod | Manufacture of wire coils |
| US3253894A (en) * | 1962-01-12 | 1966-05-31 | Westinghouse Electric Corp | Composite wire and wire coil adapted for use in fabricating multiply-coiled electrodes |
| US3247699A (en) * | 1962-01-12 | 1966-04-26 | Westinghouse Electric Corp | Manufacture of multiply-coiled electrodes for discharge devices |
| BE627771A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1962-02-05 | |||
| US3237285A (en) * | 1963-02-26 | 1966-03-01 | Bendix Corp | High frequency low noise twt helix fabrication |
| US3363304A (en) * | 1965-04-06 | 1968-01-16 | Atomic Energy Commission Usa | Method of fabricating zirconium-beryllium-eutectic wire |
| US3629914A (en) * | 1970-03-10 | 1971-12-28 | Westinghouse Electric Corp | Method of making an elongated singly coiled filament and mounting it in a tubular incandescent lamp |
| JPS5231668B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1971-07-14 | 1977-08-16 | ||
| US3729787A (en) * | 1971-09-22 | 1973-05-01 | Westinghouse Electric Corp | Method and apparatus for manufacturing beaded filament-coil components for electric lamps |
| US3803708A (en) * | 1973-02-16 | 1974-04-16 | Matsushita Electric Industrial Co Ltd | Method for making a resistor |
| US3863313A (en) * | 1973-06-07 | 1975-02-04 | Gte Sylvania Inc | Manufacture of subminiature incandescent lamps |
| US3863314A (en) * | 1973-06-07 | 1975-02-04 | Gte Sylvania Inc | Method of manufacturing miniature incandescent lamps |
| US5270609A (en) * | 1991-12-11 | 1993-12-14 | U.S. Philips Corporation | Incandescent lamp having improved filament support structure |
-
0
- BE BE412106D patent/BE412106A/xx unknown
-
1934
- 1934-11-08 US US752016A patent/US2067746A/en not_active Expired - Lifetime
-
1935
- 1935-10-30 GB GB29984/35A patent/GB465119A/en not_active Expired
- 1935-10-31 FR FR797118D patent/FR797118A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2067746A (en) | 1937-01-12 |
| FR797118A (fr) | 1936-04-21 |
| BE412106A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
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