US1751971A - Process for producing electric coils - Google Patents
Process for producing electric coils Download PDFInfo
- Publication number
- US1751971A US1751971A US398873A US39887329A US1751971A US 1751971 A US1751971 A US 1751971A US 398873 A US398873 A US 398873A US 39887329 A US39887329 A US 39887329A US 1751971 A US1751971 A US 1751971A
- Authority
- US
- United States
- Prior art keywords
- core
- tube
- electric coils
- wire
- coil
- 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
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/127—Encapsulating or impregnating
-
- 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
- Y10T29/49071—Electromagnet, transformer or inductor by winding or coiling
Definitions
- This invention relates to an improvement in processes or methods for producing electric coils and particularly electric coils which are '1 speak, the various convolutions of the wire and the core-tube into a homogeneous whole.
- the object of this invention is to provide a method for the manufacture of electric coils of the type having tubular cores of absorbent fibrous material which will minimize warping and distortion and result in the production of uniform and workmanlike articles.
- my invention consists in a process for the manufacture of electric coils having certain novel features as will be hereinafter described and particularly recited in the claims.
- Fig. 1 is a perspective view of one of the many forms of electric coils which may be manufactured by means of my improved F1 2 1s a broken perspectlve new of a I T1 of core-tube prior to the indurating treatment thereof for rendering the same impervious to hot impregnating liquids;
- Fig. 3 is a corresponding view of the same after indurating treatment
- Fig. 4 is a. perspective View of a short section of core-tube suitable for employment in the type of coil shown in Fig. 1 and indicated by stippling as indurated prior to the wimling of the convolutions of wire thereon;
- Fig. 5 is a perspective view of an electric coil in the stage of its manufacture just prior to its treatment with a hot in'ipregnating liquid, a portion of the paper insulation being broken away to expose the wire.
- difierent substances may be employed as an indurating liquid, within the meaning of that term as herein employed, to impart to the fibrous core-tube the resistant properties above described.
- I have found, howeve", sodium sicilate to be a desirable indurating substance for the reason that it is both lo w in cost and effective for the purpose intended.
- Other fluids have, however, proven satisfactory, such, for instance, as shellac, and numerous salts, which contain water of crystallization, so that when the latter is once evaporated, the core-tube is both stiff and resistant to hot impregnating fluids.
- I treat a length of core-tube 10, prior to severing it into the shorter corepieces 12 (Fig. 4), though it is obvious that the individual core-pieces may be treated, if desired.
- a coil of wire 13 is wound thereon in any approved manner, together with a strip 14 of paper which is designed to be interposed between each layer of wire in accordance with usual practice.
- the resultant article has now assumed the form shown in Fig. 5.
- the impregnating fluid is preferably ap-.
- a process for the manufacture of electric coils of the type comprising a fibrous absorbent core-tube and a coil of wire there on, consisting in treating the core-tube prior to the winding of the wire thereon with a liquid having the characteristic, when solidifled, of being substantially impervious to hot impregnating liquids, thereafter winding a coil of wire upon the core-tube so previously treated and then treating the core-tube and coil as a unit with ahot impregnating liquid; whereby during the latter treatment, the 'said core-tube is shielded from the softening and weakening efiects of the hot impregnating liquid and the distortion of the unit avoided.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Of Coils (AREA)
Description
March 25, 1930. M. BARNUM I PROCESS FOR PRODUCING ELECTRIC COILS Filed Oct. 11, 1929 Patented Mar. 25, 1930 UNITED STATES PATENT OFFICE MARSHALL BABNUH, OF NEW HAVEN, CONNECTICUT, ASSIGNOB TO THE ACME WIRE COHI'ANY, NEW HAVEN, CONNECTICUT, A CORPORATION PROCESS FOR PRODUCING ELECTRIC COILS Application filed October 11, 1929. Serial No. 398,873.
This invention relates to an improvement in processes or methods for producing electric coils and particularly electric coils which are '1 speak, the various convolutions of the wire and the core-tube into a homogeneous whole.
One of the main objections to treating electric coils with liquids which are heated to increase their penetrative action, desirable though this is, is the fact that such treatment tends to soften the absorbent paper or other fibrous core and thus permit the same, together with the convolutions of wire wound thereon, to twist, warp, or otherwise become distorted from a predetermined form.
The object of this invention is to provide a method for the manufacture of electric coils of the type having tubular cores of absorbent fibrous material which will minimize warping and distortion and result in the production of uniform and workmanlike articles.
With the foregoing and other objects in view, my invention consists in a process for the manufacture of electric coils having certain novel features as will be hereinafter described and particularly recited in the claims.
In the accompanying drawings:
Fig. 1 is a perspective view of one of the many forms of electric coils which may be manufactured by means of my improved F1 2 1s a broken perspectlve new of a I T1 of core-tube prior to the indurating treatment thereof for rendering the same impervious to hot impregnating liquids;
Fig. 3 is a corresponding view of the same after indurating treatment;
Fig. 4 is a. perspective View of a short section of core-tube suitable for employment in the type of coil shown in Fig. 1 and indicated by stippling as indurated prior to the wimling of the convolutions of wire thereon; and
Fig. 5 is a perspective view of an electric coil in the stage of its manufacture just prior to its treatment with a hot in'ipregnating liquid, a portion of the paper insulation being broken away to expose the wire.
In carrying out my invention I apply to a length of core-tube 10, in any approved manner, treatment or coating 11, indicated by fine properties, and by the use of suc 1 term I wish to be understood as meaning its capacity for rendering the object treated effectively resistant to the softening or other deleterious effects of hot impregnating compounds, such as wax, resin, or pitch.
Many difierent substances may be employed as an indurating liquid, within the meaning of that term as herein employed, to impart to the fibrous core-tube the resistant properties above described. I have found, howeve", sodium sicilate to be a desirable indurating substance for the reason that it is both lo w in cost and effective for the purpose intended. Other fluids have, however, proven satisfactory, such, for instance, as shellac, and numerous salts, which contain water of crystallization, so that when the latter is once evaporated, the core-tube is both stiff and resistant to hot impregnating fluids.
. Preferably, I treat a length of core-tube 10, prior to severing it into the shorter corepieces 12 (Fig. 4), though it is obvious that the individual core-pieces may be treated, if desired.
After the core-tube has been treated either in long lengths or individually to render it substantially impervious to hot impregnating liquids or compounds, a coil of wire 13 is wound thereon in any approved manner, together with a strip 14 of paper which is designed to be interposed between each layer of wire in accordance with usual practice. The resultant article has now assumed the form shown in Fig. 5.
The next important step in carrying out my invention consists in treating the unit In testimony whereof, I Have signed this specification.
MARSHALL BARNUM.
comprising the coil of wire 13, paper strip v 14 and core-tube 12 with an impregnating fluid of wax resin, pitch, etc., which is applied hot to better cause it to penetrate into the paper 14 and all interstices in the coilstructure.
The impregnating fluid is preferably ap-.
plied to the coil-structure by immersing the latter in a molten and highly-fluid bath of the desired constituents though, as is obvious, other methods of application may be employeda When the hot impregnating fluid is applied to the coil-structure as above described, the same is prevented from so deleteriously affecting the core-tube 12, which is virtually the foundation of the coil, as to soften or weaken it to thereby permit distortion.
As a result of the employment of my improved process electric coils may be produced which do not vary in size or form from a predetermined standard and therefore may be relied upon to fit into an assembly such as radio-receivers, etc., without alteration.
I claim:
1. A process for the manufacture of electric coils of the type comprising a fibrous absorbent core-tube and a coil of wire there on, consisting in treating the core-tube prior to the winding of the wire thereon with a liquid having the characteristic, when solidifled, of being substantially impervious to hot impregnating liquids, thereafter winding a coil of wire upon the core-tube so previously treated and then treating the core-tube and coil as a unit with ahot impregnating liquid; whereby during the latter treatment, the 'said core-tube is shielded from the softening and weakening efiects of the hot impregnating liquid and the distortion of the unit avoided.
2; A process for the manufacture of electric coils of the type comprising a fibrous absorbent core-tube and a coil of wire thereon,
consisting in treating the core-tube prior to the winding of the Wire thereon with a liquid having the characteristics, when solidified, of being substantially impervious to hot impregnating liquids and physically hard, thereafter windingsa coil of wire upon the
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US398873A US1751971A (en) | 1929-10-11 | 1929-10-11 | Process for producing electric coils |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US398873A US1751971A (en) | 1929-10-11 | 1929-10-11 | Process for producing electric coils |
Publications (1)
Publication Number | Publication Date |
---|---|
US1751971A true US1751971A (en) | 1930-03-25 |
Family
ID=23577142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US398873A Expired - Lifetime US1751971A (en) | 1929-10-11 | 1929-10-11 | Process for producing electric coils |
Country Status (1)
Country | Link |
---|---|
US (1) | US1751971A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2464029A (en) * | 1945-04-07 | 1949-03-08 | Gen Electric | Method of making transformers |
US2506026A (en) * | 1948-12-17 | 1950-05-02 | Westinghouse Electric Corp | Method of bonding conductors |
US2654142A (en) * | 1947-07-23 | 1953-10-06 | Mcgraw Electric Co | Method of making and staying electrical transformer windings |
US3726005A (en) * | 1970-03-20 | 1973-04-10 | Iskra Zavod Za Avtomatiz | Method of manufacturing flat-wire field coils |
WO2002097953A1 (en) * | 2001-05-31 | 2002-12-05 | Valeo Equipements Electriques Moteur | Method for the production of a rotor for an electric turning machine |
-
1929
- 1929-10-11 US US398873A patent/US1751971A/en not_active Expired - Lifetime
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2464029A (en) * | 1945-04-07 | 1949-03-08 | Gen Electric | Method of making transformers |
US2654142A (en) * | 1947-07-23 | 1953-10-06 | Mcgraw Electric Co | Method of making and staying electrical transformer windings |
US2506026A (en) * | 1948-12-17 | 1950-05-02 | Westinghouse Electric Corp | Method of bonding conductors |
US3726005A (en) * | 1970-03-20 | 1973-04-10 | Iskra Zavod Za Avtomatiz | Method of manufacturing flat-wire field coils |
WO2002097953A1 (en) * | 2001-05-31 | 2002-12-05 | Valeo Equipements Electriques Moteur | Method for the production of a rotor for an electric turning machine |
FR2825534A1 (en) * | 2001-05-31 | 2002-12-06 | Valeo Equip Electr Moteur | METHOD FOR MANUFACTURING A ROTOR OF A ROTATING ELECTRIC MACHINE |
US20040056559A1 (en) * | 2001-05-31 | 2004-03-25 | Arnaud Laxenaire | Method for the production of a rotor for an electric turning machine |
US7170206B2 (en) | 2001-05-31 | 2007-01-30 | Valeo Equipements Electriques Moteur | Method for the production of a rotor for an electric turning machine |
KR100900861B1 (en) * | 2001-05-31 | 2009-06-04 | 발레오 에뀝망 엘렉뜨리끄 모떼르 | Method for the production of a rotor for an electric turning machine |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3866316A (en) | Method for manufacturing an insulated coil | |
US2458243A (en) | Aluminum covered glass thread | |
US1826297A (en) | Method of making electric coils | |
US2282759A (en) | Antenna loop | |
US2370046A (en) | Insulated electrical conductor | |
US2393530A (en) | Flexible sleeving | |
US1751971A (en) | Process for producing electric coils | |
US2209850A (en) | Fibrous glass textile material for electrical insulation | |
US3192309A (en) | Insulation for winding wire and method of and device for producing the same | |
US1485289A (en) | Electric coil and method of making same | |
US2227931A (en) | Magnet wire | |
US2936516A (en) | Method of making a dielectric core and resistor | |
US4115840A (en) | Printed circuit board with fluorocarbon coated inductor | |
US1495823A (en) | Electrical coil and method of making the same | |
US1777571A (en) | Coil and method of making the same | |
US2751318A (en) | Method of manufacturing coils | |
US2065561A (en) | Method of and equipment for producing abrasion resisting covering for conductors | |
US2155403A (en) | Method of making insulated wire | |
US2935631A (en) | Composite insulated electrical conductor and method of fabricating same | |
US2026616A (en) | Precision resistance | |
US1944753A (en) | Welding electrode | |
US2013686A (en) | Process of making insulated wire | |
US1845116A (en) | Method of insulating coils | |
US1606810A (en) | Electrical conduit | |
US1874722A (en) | Electrical coil and process for making the same |