GB234489A - Improved manufacture of non-sagging spiral filaments of highly refractory metal - Google Patents
Improved manufacture of non-sagging spiral filaments of highly refractory metalInfo
- Publication number
- GB234489A GB234489A GB13204/25A GB1320425A GB234489A GB 234489 A GB234489 A GB 234489A GB 13204/25 A GB13204/25 A GB 13204/25A GB 1320425 A GB1320425 A GB 1320425A GB 234489 A GB234489 A GB 234489A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sagging
- refractory metal
- mandrel
- highly refractory
- improved manufacture
- 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 1
- 239000003870 refractory metal Substances 0.000 title 1
- 238000007665 sagging Methods 0.000 title 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 abstract 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract 2
- 229910052750 molybdenum Inorganic materials 0.000 abstract 2
- 239000011733 molybdenum Substances 0.000 abstract 2
- 229910052715 tantalum Inorganic materials 0.000 abstract 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 abstract 2
- 229910052726 zirconium Inorganic materials 0.000 abstract 2
- SGDKTJPVCKQTHK-UHFFFAOYSA-N 5-bromo-2-fluoro-3-nitropyridine Chemical compound [O-][N+](=O)C1=CC(Br)=CN=C1F SGDKTJPVCKQTHK-UHFFFAOYSA-N 0.000 abstract 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- 238000000137 annealing Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910017604 nitric acid Inorganic materials 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Resistance Heating (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL234489X | 1924-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB234489A true GB234489A (en) | 1926-03-18 |
Family
ID=19780188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13204/25A Expired GB234489A (en) | 1924-05-24 | 1925-05-20 | Improved manufacture of non-sagging spiral filaments of highly refractory metal |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1904105A (en:Method) |
| FR (1) | FR595911A (en:Method) |
| GB (1) | GB234489A (en:Method) |
| NL (2) | NL27188B (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2454318A (en) * | 1943-04-24 | 1948-11-23 | Westinghouse Electric Corp | Method of fabricating electron discharge devices |
-
0
- NL NL20242D patent/NL20242C/xx active
- NL NL27188D patent/NL27188B/xx unknown
-
1925
- 1925-03-28 FR FR595911D patent/FR595911A/fr not_active Expired
- 1925-04-27 US US26290A patent/US1904105A/en not_active Expired - Lifetime
- 1925-05-20 GB GB13204/25A patent/GB234489A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL20242C (en:Method) | |
| FR595911A (fr) | 1925-10-12 |
| US1904105A (en) | 1933-04-18 |
| NL27188B (en:Method) |
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