GB721711A - Improvements in or relating to electrical coils - Google Patents
Improvements in or relating to electrical coilsInfo
- Publication number
- GB721711A GB721711A GB19525/52A GB1952552A GB721711A GB 721711 A GB721711 A GB 721711A GB 19525/52 A GB19525/52 A GB 19525/52A GB 1952552 A GB1952552 A GB 1952552A GB 721711 A GB721711 A GB 721711A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coating
- wire
- coil
- roller
- reservoir
- 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
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
- H01F41/06—Coil winding
- H01F41/064—Winding non-flat conductive wires, e.g. rods, cables or cords
- H01F41/066—Winding non-flat conductive wires, e.g. rods, cables or cords with insulation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
721,711. Coating wire. WESTERN ELECTRIC CO., Inc. Aug. 1, 1952 [Aug. 4, 1951], No. 19525/52. Class 140. [Also in Group XXXV] A bare conductor is coated with a layer of fluid insulating material having finely-divided solid insulating particles dispersed therein, the insulating coating is partially solidified, the coated conductor is wound into a coil while the coating still possesses a degree of fluidity so that adjacent coatings coalesce and the coalesced coatings are hardened to provide a solid or substantially solid matrix in which the turns of the coil are held in insulated spaced relationship. Thermosetting resins (e.g. phenolic or epoxy) or thermoplastic resins (polyamides, polyvinylchloride, polyethylene, butadiene - styrene - acrylonitrile copolymers, butadiene-styrene copolymers, acrylates, polytetrafluoroethylene and polymonochlorotrifluoroethylene) may be used as the insulating material. Silica, aluminium and magnesium silicates, mica, lead chromate, lead titanate, titanium dioxide, zinc oxide, ferric oxide, aluminium oxide, cupric oxide, talc, and cellulose, nylon or other filamentary material may be used as the finely-divided solid filler. The coating may be applied electrophoretically or by a die wipe or roller coating process. The resin composition may be suspended in a liquid, e.g. water, which may be removed by heat, or in a liquid such as divinyl benzene or acrylonitrile which may be allowed to cross-link with the resin. Partial setting of thermosetting materials may be brought about by heating. As shown (Fig. 3) an electrophoretic applicator comprises a cylindrical tube 35 divided by walls 37 and 38 into chambers 40, 34 and 41. The coating material is pumped from a reservoir 31 into the chamber 34 through pipe 32, overflowing through pipes 46 and 47 back to the reservoir. Any coating material flowing through the holes 40 and 44 in the dividing walls flows back to the reservoir through pipes 49, 50 and 51. The wire 1 under constant tension passes through holes 42, 43, 44 and 45. If the particles in the coating dispersion carry a positive charge, the wire may be grounded and the cylinder or tube 35 charged positively from a battery. Similarly when using negatively-charged particles the cylinder may be charged negatively with respect to the wire. Breaking the electrostatic field by a switch results in a length of wire passing uncoated through the applicator and this bare wire may be used for connection to the terminal block of the coil. The coating is partially solidified by heating or cooling according to the nature of the coating and the coated wire wound into a coil on a laterally moving arbor. A jet of hot gas, e.g. nitrogen, at 120 ‹ C. may be directed toward the arbor during the winding to solidify and bond the coatings together. Alternatively a roller coater (Fig. 4) may be used. This comprises a roller 60 formed with a plurality of grooves 61 and mounted for rotation in a housing 63. Excess coating material is removed by a spring-tensioned scraper 64. The roller rotates partly immersed in the coating composition and the wire passes through one of the grooves 61.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US721711XA | 1951-08-04 | 1951-08-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB721711A true GB721711A (en) | 1955-01-12 |
Family
ID=22106018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB19525/52A Expired GB721711A (en) | 1951-08-04 | 1952-08-01 | Improvements in or relating to electrical coils |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB721711A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112309707A (en) * | 2020-10-26 | 2021-02-02 | 苏州速尼科测试设备有限公司 | Preparation process of driving coil |
-
1952
- 1952-08-01 GB GB19525/52A patent/GB721711A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112309707A (en) * | 2020-10-26 | 2021-02-02 | 苏州速尼科测试设备有限公司 | Preparation process of driving coil |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2739371A (en) | Method for producing conducting coils | |
US2191827A (en) | Apparatus for applying liquid to fabric | |
KR920002171B1 (en) | Process for depositing an insulating coating | |
US4723083A (en) | Electrodeposited mica on coil bar connections and resulting products | |
US2386634A (en) | Flexible electrical insulating layer | |
GB655763A (en) | Improvements in or relating to the electrophoretic coating of articles of electrically conducting material | |
Miyao et al. | Influence of ac and dc Fields on Streaming Electrification of Transformer Oil | |
GB721711A (en) | Improvements in or relating to electrical coils | |
US1068410A (en) | Process of and apparatus for coating electric conductors. | |
US3540990A (en) | Electrocoating process | |
ES8304700A1 (en) | Method for producing electrically insulated conductor | |
US3731655A (en) | Apparatus for marking insulated electrical conductors | |
GB2077625A (en) | Electrically insulating coating | |
US2341712A (en) | Method of making cable | |
JPH10296182A (en) | Method for forming continuous resin coating film on metallic body | |
JP2770857B2 (en) | Rare earth magnet coating method | |
DE3403267C2 (en) | ||
GB674014A (en) | Filament forming apparatus | |
SU1515206A1 (en) | Method of producing electric insulation coating of slots in magnetic cores in electric machines | |
JPS5920915A (en) | Insulated wire and method of producing same | |
SE447705B (en) | SET AND DEVICE TO ASTAD A CORROSION RESISTANT AND ELECTRICALLY LEADING LAYER ON A CABLE | |
SU716768A2 (en) | Apparatus for applying ferromagnetic coatings | |
JPS62177813A (en) | Manufacture of rectangular insulated wire | |
SU599821A1 (en) | Apparatus for dehydrating hydrocarbon medium | |
JPH019647Y2 (en) |