US1293116A - Method of drawing wire filaments for incandescent electric lamps. - Google Patents
Method of drawing wire filaments for incandescent electric lamps. Download PDFInfo
- Publication number
- US1293116A US1293116A US81800814A US1914818008A US1293116A US 1293116 A US1293116 A US 1293116A US 81800814 A US81800814 A US 81800814A US 1914818008 A US1914818008 A US 1914818008A US 1293116 A US1293116 A US 1293116A
- Authority
- US
- United States
- Prior art keywords
- tungsten
- electric lamps
- wire filaments
- drawing wire
- incandescent electric
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 title description 16
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 24
- 229910052721 tungsten Inorganic materials 0.000 description 18
- 239000010937 tungsten Substances 0.000 description 18
- 239000000463 material Substances 0.000 description 11
- 238000000151 deposition Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 239000000454 talc Substances 0.000 description 3
- 229910052623 talc Inorganic materials 0.000 description 3
- 235000012222 talc Nutrition 0.000 description 3
- 150000003658 tungsten compounds Chemical class 0.000 description 3
- 229910001339 C alloy Inorganic materials 0.000 description 2
- FYROBQPBBUJTRD-UHFFFAOYSA-N [C].[Fe].[W] Chemical compound [C].[Fe].[W] FYROBQPBBUJTRD-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- WIGAYVXYNSVZAV-UHFFFAOYSA-N ac1lavbc Chemical compound [W].[W] WIGAYVXYNSVZAV-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M103/00—Lubricating compositions characterised by the base-material being an inorganic material
- C10M103/06—Metal compounds
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/54—Electroplating: Baths therefor from solutions of metals not provided for in groups C25D3/04 - C25D3/50
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/02—Water
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/24—Metal working without essential removal of material, e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding; Punching metal
Definitions
- FREDERICK G REYES, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO COOPER HEWITT nmao'rmc COMPANY, or HoBoKE w,
- the present method of obtaining metallic tungsten consists in adding to tungsten trioxid (W0 a suitable binding material, and then reducing in an atmosphere of hydrogen at a high temperature.
- the ingot thus produced consists of metallic tungsten cemented together by a binding material and the next step in the process is that of subjecting the ingot to a swaging process which is also carried out at a high temperature.
- the swaging is continued until the ingot is reduced to a diameter that permits of its being drawn while hot through suitable dies until the desired sizes are obtained.
- the binding material is so selected as to toughen the resulting wire.
- the object of the'present invention is to provide means for obtaining pure metallic tungsten in'distinction from tungsten-tungsten carbid.
- the method which consists in depositing tungsten from an electrolytic bath of tungsten compound in an ionizing medium upon a fine tungsten wire, and subjecting the resulting wire to a hot drawing process.
- the method which consists in depositing tungsten from an electrolytic bath of tungsten compound in an ionizing medium upon a tungsten core, and subjecting the resultin material to a hot drawing process.
- the method of producing ductile tungsten wire which consists in forming a body of'tungsten, depositing pure metallic tungsten on said body as a core from an electrolytic bath of tungsten compound in an ionizing medium, and hot drawing the resulting material.
- the method which consists in forming the linear body of tungsten, depositing pure metallic tungsten thereon electrolytically hot drawing the resulting material through dies of tungsten iron carbon alloy with the use of a lubricating material of powdered talcum.
Description
UNITED STATES PATENT onrrou.
FREDERICK G. REYES, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO COOPER HEWITT nmao'rmc COMPANY, or HoBoKE w,
NEW JERSEY, A CORPORATION OF NEW JERSEY.
M'J'I'JEHOID OF DRAWING WIRE FILAMENTS FOR INCANDESCEN'I ELECTRIC LAMPS.
No Drawing.
useful Improvements in Methods of Drawing Wire Filaments for Incandescent Electric Lamps, of which the following is a specification.
The present method of obtaining metallic tungsten consists in adding to tungsten trioxid (W0 a suitable binding material, and then reducing in an atmosphere of hydrogen at a high temperature. The ingot thus produced consists of metallic tungsten cemented together by a binding material and the next step in the process is that of subjecting the ingot to a swaging process which is also carried out at a high temperature. The swaging is continued until the ingot is reduced to a diameter that permits of its being drawn while hot through suitable dies until the desired sizes are obtained. The binding material is so selected as to toughen the resulting wire.
It is adisadvantage appertaining to this process that the dies are lubricated with graphite. It is a matter of common knowledge that tungsten has a grgat avidity for carbon, where as it would I an advantage to prevent, it possible, any cementation. This is done in the present method of obtaining tungsten and the result is that the tungsten wire used in tungsten lamps is in reality not a pure metal, but a mixture, chemical or otherwise, of binding material and carbid.
Experience shows that a pure metal is very much more ductile than any of its alloys. The object of the'present invention is to provide means for obtaining pure metallic tungsten in'distinction from tungsten-tungsten carbid.
To accomplish this I dissolve tungsten trioxid in boric acidat 1200 to 1400 C. and electrolyze the solution thus formed. While it is impossible to electrolyze tungsten from an aqueous solution, it is readily possible to secure a deposit of pure metallic tungsten from a boric acid solution at the temperatures mentioned above. The tungsten can be deposited electrolytically upon a fine tungsten wire and when a sufiicient amount has Specification of Letters Patent.
Patented Feb. a, was.
Application filed February 11. 191 Serial No. 818.008.
been deposited, it may be subjected to a drawing process such as is now used, or, preferably, it may, in the early stages of the drawing, be drawn through dies of a special tungsten-iron-carbon alloy. Such alloys are already known in the arts and tools made of it hold their edge at a red heat. The pure tungsten having, as stated, a superior quality of ductility when obtained by my process may be drawn through these special dies, thus avoiding the expensive diamond As a lubricating material powdered talcum may be substituted for the deleterious graphite.
I claim as my invention:
1. The method, which consists in depositing tungsten from an electrolytic bath of tungsten compound in an ionizing medium upon a fine tungsten wire, and subjecting the resulting wire to a hot drawing process.
2. The method,which consists in depositing tungsten from an electrolytic bath of tungsten compound in an ionizing medium upon a tungsten core, and subjecting the resultin material to a hot drawing process.
3. The method of producing ductile tungsten wire, which consists in forming a body of'tungsten, depositing pure metallic tungsten on said body as a core from an electrolytic bath of tungsten compound in an ionizing medium, and hot drawing the resulting material.
' 4. The method of producing ductile tungsten wire which consists in forming the linear body of tungsten, depositing pure metallic tungsten electrolytically uponsaid linear body hot drawing the resulting material with the use of a lubricating material of powdered talcum.
5. The method which consists in forming the linear body of tungsten, depositing pure metallic tungsten thereon electrolytically hot drawing the resulting material through dies of tungsten iron carbon alloy with the use of a lubricating material of powdered talcum.
Signed at New York in the county of New dies.
York and State of New York this 10th day
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US81800814A US1293116A (en) | 1914-02-11 | 1914-02-11 | Method of drawing wire filaments for incandescent electric lamps. |
| US179934A US1293117A (en) | 1914-02-11 | 1917-09-11 | Production of metallic tungsten. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US81800814A US1293116A (en) | 1914-02-11 | 1914-02-11 | Method of drawing wire filaments for incandescent electric lamps. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1293116A true US1293116A (en) | 1919-02-04 |
Family
ID=3360671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US81800814A Expired - Lifetime US1293116A (en) | 1914-02-11 | 1914-02-11 | Method of drawing wire filaments for incandescent electric lamps. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1293116A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5123868A (en) * | 1991-04-17 | 1992-06-23 | John F. Waymouth Intellectual Property And Education Trust | Electromagnetic radiators and process of making electromagnetic radiators |
-
1914
- 1914-02-11 US US81800814A patent/US1293116A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5123868A (en) * | 1991-04-17 | 1992-06-23 | John F. Waymouth Intellectual Property And Education Trust | Electromagnetic radiators and process of making electromagnetic radiators |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US1597189A (en) | Method of cold-drawing refractory materials | |
| GB418989A (en) | Improvements in and relating to incandescent electric lamp filaments and methods of manufacturing the same | |
| US1293116A (en) | Method of drawing wire filaments for incandescent electric lamps. | |
| US1617161A (en) | Process of preparing metals | |
| US930723A (en) | Process of forming electric-incandescent-lamp filaments. | |
| US2225239A (en) | Filament | |
| US1547394A (en) | Leading-in wire for electrical incandescent lamps and similar devices | |
| US1345441A (en) | Process of drawing refractory metal | |
| US2450007A (en) | Carburized filament and method for treating the same | |
| US1498908A (en) | Evacuated container | |
| US1110303A (en) | Method of manufacturing alloys of tungsten and other highly refractory metals related to it. | |
| US1670463A (en) | Electron-emission material and method of preparation | |
| US1149701A (en) | Ductile filament. | |
| US1293117A (en) | Production of metallic tungsten. | |
| US1913100A (en) | Method of making hard alloys | |
| US1547395A (en) | Sealing-in wire | |
| US1355532A (en) | Method of forming alloys | |
| US1253362A (en) | Method of lubricating refractory wires during drawing the same. | |
| Bounds et al. | Nickel Alloys for Oxide-Coated Cathodes | |
| Powell et al. | The deposition of tantalum and columbium from their volatilized halides | |
| US2046629A (en) | Process of cementation | |
| US1156492A (en) | Method of drawing refractory materials for incandescent lamps. | |
| US1881257A (en) | Wrought metal article | |
| US1610262A (en) | Alloy | |
| US2169189A (en) | Copper base alloy |