US119176A - Improvement in electro-magnets - Google Patents
Improvement in electro-magnets Download PDFInfo
- Publication number
- US119176A US119176A US119176DA US119176A US 119176 A US119176 A US 119176A US 119176D A US119176D A US 119176DA US 119176 A US119176 A US 119176A
- Authority
- US
- United States
- Prior art keywords
- electro
- magnets
- improvement
- bar
- bath
- 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
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
-
- 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
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49075—Electromagnet, transformer or inductor including permanent magnet or core
Definitions
- rIhis invention relates to certain improvements in electro-magnets suitable for electromagnetic machines and apparatus for telegraphing, imparting motion, and other purposes where electro-magnets are required; and the object ot' the invention is to produce an electro-magnet which shall have greater ⁇ attracting and repelling power than electro-magnets or' equal size made in the ordinary manner.
- electro-magnet l take a three-strand copper wirethat is say, a twisted wire made of three copper wires twisted together and with these combined wires I lap the horseshoe-shaped bar above described.
- a twisted wire made of three copper wires twisted together and with these combined wires I lap the horseshoe-shaped bar above described.
- the diameter or' the copper wire forlapping small magnets should be about one-sixteenth of an inch, but for large and powerful magnets one-eighth of an inch copper wire should be employed.
- One of the three twisted wires may be applied, if required, to an induction-coil whereby a return current toward the battery will be obtained at the moment of production or' the spark on the commutator.
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
Description
y No {119,176. Patented Sep. 19,1871.
UNITED STATES PATENT FFICE.
EMILE PREVOST, OF NEW YORK, N. N.
IMPROVEMENT IN ELECTRO-MAGNETS.
Specification forming part of Letters Patent No. 119,176, dated September 19, 1871.
To all whom t may concern:
Be it known that I, EMILE PREVOST, of the city, county, and State of New York, have invented a new and useful Improvement in Electro-Magnets 5 and I do hereby declare the following to be a full,v clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawing forming part oi' this specilication, which drawing, consisting or' one ligure, represents an electro-magnet made according to my invention.
rIhis invention relates to certain improvements in electro-magnets suitable for electromagnetic machines and apparatus for telegraphing, imparting motion, and other purposes where electro-magnets are required; and the object ot' the invention is to produce an electro-magnet which shall have greater` attracting and repelling power than electro-magnets or' equal size made in the ordinary manner.
In making an electromagnet according to my invention, I take a bar of iron of the best quality and of the requisite diameter, according to the surface desired, and bring it to the shape of a horseshoe, which form I lind to answer best; but when forging or bending it care must be taken not to overwerk or burn the metal. After each heat I immediately immerse it in a bath of 1nolten lead or fusible metal, wherein it is allowed to cool. Care must be taken to prevent the said bar from iloating ou the surface of the bath and thus coming in contact with the air. I repeat the operation of heating the bar, andthe subsequent cooling of the same in said bath, six or seven times. During the last reheating the te1nperature of the lead must be about the melting point, and I add .iiour of sulphur to the bath from time to time, until the bar bends with ease.
The bar of iron having been prepared as above described, and having been well polished after the last cooling, is next plunged into a bath o1" alcohol at an elevated temperature until the metal assumes a yellowish color, whereupon iinely divided sal-amoniae is to be added to the alcoholic bath, and the whole is allowed to cool as slowly as possible. After this it will be found that the bar or horseshoe when under the iniluence of an electric current will become powerfully attractive and repulsive.
In lapping' my improved electro-magnet l take a three-strand copper wirethat is say, a twisted wire made of three copper wires twisted together and with these combined wires I lap the horseshoe-shaped bar above described. For electro-magnets of comparativelyv small power six coils or layers will be suilicicnt, but for powerful magnets I employ ten of such coils or layers. The diameter or' the copper wire forlapping small magnets should be about one-sixteenth of an inch, but for large and powerful magnets one-eighth of an inch copper wire should be employed. One of the three twisted wires may be applied, if required, to an induction-coil whereby a return current toward the battery will be obtained at the moment of production or' the spark on the commutator.
W'hat I claim as new, and desire to secure by Letters Patent, is-
'Ihe process, substantially as above described, for treating and preparing bars for electroanagnets.
This specification signed by me this 21st day of December, 1869.
EMILE PREVOST. Vitnesses:
W. HAUEE, G. WAnLERs.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US119176A true US119176A (en) | 1871-09-19 |
Family
ID=2188628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US119176D Expired - Lifetime US119176A (en) | Improvement in electro-magnets |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US119176A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050075708A1 (en) * | 2002-11-26 | 2005-04-07 | O'brien Robert C. | Nanotube coatings for implantable electrodes |
| US20060105275A1 (en) * | 2004-11-15 | 2006-05-18 | Maloney John M | Fabrication methods and structures for micro-reservoir devices |
| AU2001266901B2 (en) * | 2000-06-19 | 2006-05-18 | Mcneil-Ppc, Inc. | Tampon applicator having outwardly flared rim |
-
0
- US US119176D patent/US119176A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2001266901B2 (en) * | 2000-06-19 | 2006-05-18 | Mcneil-Ppc, Inc. | Tampon applicator having outwardly flared rim |
| US20050075708A1 (en) * | 2002-11-26 | 2005-04-07 | O'brien Robert C. | Nanotube coatings for implantable electrodes |
| US20060105275A1 (en) * | 2004-11-15 | 2006-05-18 | Maloney John M | Fabrication methods and structures for micro-reservoir devices |
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