US2787769A - Tapped coil - Google Patents

Tapped coil Download PDF

Info

Publication number
US2787769A
US2787769A US367858A US36785853A US2787769A US 2787769 A US2787769 A US 2787769A US 367858 A US367858 A US 367858A US 36785853 A US36785853 A US 36785853A US 2787769 A US2787769 A US 2787769A
Authority
US
United States
Prior art keywords
tap
coil
lead
coil body
tubular members
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
Application number
US367858A
Inventor
Ezra C Hill
Harry J Proxmire
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to US367858A priority Critical patent/US2787769A/en
Application granted granted Critical
Publication of US2787769A publication Critical patent/US2787769A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H01F41/10—Connecting leads to windings
    • 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

  • TAPPED COIL Filed July 14-, 1953 may The/r A ttor/yy TAPPED COIL Ezra C. Hill and Harry J. Proxmire, Fort Wayne, Ind.,as-
  • This invention relates to coils for inductive devices and more particularly coils having a tap.
  • inductive devices such as transformers
  • a coil having a tap i. e. a connection brought out intermediate the ends of the coil.
  • the coil is .a high voltage coil and thus wound with fine wire
  • insulation problems have made it difiicult to bring out a tap and therefore in the past, it has been conventional practice to provide two separate coils with the end connections between the two coils providing the tap.
  • a coil body wound on a spool and having a plurality of layers of wire.
  • One or more, preferably two axially extending tubular members are wound between two of the coil layers at or near the point where the tap is to be brought out.
  • a tap is taken from the coil body and connected to one end of an external tap lead. This connection is then positioned in one of the tubular members and the external lead extends through the other of the tubular members thereby anchoring the tap lead to the coil body.
  • FIG. 1 is a view in perspective, partially broken away, illustrating the improved tapped coil construction of this invention.
  • Fig. 2 is a similar view illustrating the method of making the tapped connection of Fig. 1.
  • a high voltage coil generally identified as 1 having a plurality of layers 2 of relatively fine wire wound on a spool 3.
  • a pair of spaced apart axially extending tubular members 4 and 5, formed of suitable insulating material, are wound between two of the layers of the coil in the region from which the tap is to be brought out.
  • These tubular members extend through substantially the entire axial length of the coil 1, as clearly shown in Figs. 1 and 2.
  • a single coil of wire is pulled away from the outside of one of the layers forming a tap loop 6 as shown in Fig. 2.
  • the tap loop 6 is connected to an end 7 of external tap lead 8 and this connection is then soldered, as at 9 in Fig. 1.
  • the soldered connection 9 together with the adjacent portions of the tap loop 6 and external tap lead 8 are inserted in the tubular mem- United States P t O 2,787,769 Patented Apr. 2, i957 her 4, as shown in Fig. 1.
  • External tap lead 8 is then brought through the other tubular member 5 with its other end 10 being on the side of the coil 1 remote from the side from which the tap loop 6 was taken.
  • the finished coil may be bound together in any suitable manner, as by tape 11 which may also anchor the other external leads, one of which is shown at 12.
  • this improved tapped coil construction securely anchors the tap lead to the coil and that since all parts of the tap lead and coil loop are confined to the portion of the coil body where the tap occurs, there are no points of high potential gradient between the tap lead and the coil as are created by conventional methods of bringing out and anchoring tap leads.
  • no reasonable amount of pulling on the end 10 of the tap lead 8 or ordinary movement of lead will cause strain or breakage of the fine wire forming the tap loop 6.
  • a tapped coil comprising a coil body having a plurality of layers of wire, a pair of axially extending tubular members formed of insulating material arranged between two of said coil body layers, said coil body having a tap taken from one side thereof, and an external tap lead, one end of said tap lead being connected to said coil body tap, said connection being positioned in one of said tubular members, said tap lead passing through the other of said tubular members and extending from the side of said coil body opposite from said one side thereby anchoring said tap lead to said coil body.
  • a tapped coil comprising a coil body having a plurality of layers of wire, a pair of axially extending tubular members formed of insulating material arranged between two of said layers, said coil body having a tap taken from one side thereof, and an external tap lead, one end of said tap lead being connected to said coil body tap, said connection and adjacent portions of said tap and tap lead being positioned in one of said tubular members, said tap lead passing through the other of said tubular members and extending from the side of said coil body opposite from said one side thereby anchoring said tap lead to said coil body.
  • a tapped coil comprising a coil body having a plurallity of layers of wire, a pair of spaced apart axially extending tubular members formed of insulating material wound between two of said coil body layers, said coil body having a tap loop taken from one layer thereof on one side of said coil body, and an external tap lead, one end of said tap lead being connected to said coil body tap loop, said connection and adjacent portions of said tap loop and said tap lead being inserted in one end of one of said tubular members, said tap lead passing through the other of said tubular members and extending from the side of said coil body opposite from said one side thereby anchoring said tap lead to said coil body.
  • a tapped coil comprising a coil body wound on a spool and having a plurality of layers of relatively fine wire, a pair of axially extending tubular members formed of insulating material wound between two of said coil body layers and extending through substantially the axial length of said coil body, said coil body having a tap taken from one side thereof, and an external tap lead, one end of said tap lead being connected to said coil body tap, said connection and adjacent portions of said tap and tap lead being inserted in one end of one of said tubular members, said tap lead passing through the other of said tubular members and extending from the side of said coil body opposite from said one side thereby anchoring said tap lead to said coil body.
  • a tapped coil comprising a coil body wound on a spool and having a plurality of layers of relatively fine wire, a pair of spaced apart axially extending tubular members formed of insulating material wound between two of said coil body layers and extending through substantially the axial length of said coil body, said coil body having a tap loop taken from the outside coil of one layer thereof on one side of said coil body, and an external tap lead, one end of said tap lead being connected to said coil body tap loop, said conection and adjacent portions of said tap loop and said tap lead being positioned in one of said tubular members, said tap lead passing through the other of said tubular members and extending from the side of said coil body opposite from said one side thereby anchoring said tap lead to said coil body.
  • a coil comprising a coil body having a plurality of layers of wire, a pair of axially extending tubular members formed of insulating material arranged btween two of said coil body layers, said coil body having a lead taken from one side thereof, and an external lead, one end of said external lead being connected to said coil lead, said connection being positioned in one of said tubular members, said external lead passing through the other of said tubular members and extending from the side of said coil body opposite from said one side thereby anchoring said external lead to said coil body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Of Transformers For General Uses (AREA)

Description

April 2, 1957 E. c. HILL ET AL 2,787,769
TAPPED COIL Filed July 14-, 1953 may The/r A ttor/yy TAPPED COIL Ezra C. Hill and Harry J. Proxmire, Fort Wayne, Ind.,as-
signors to General Electric Company, a corporation of New York Application July 14, 1953, Serial No. 367,858
6 Claims. (Cl. 336-492) This invention relates to coils for inductive devices and more particularly coils having a tap.
In the design of inductive devices, such as transformers, it is frequently necessary to provide a coil having a tap, i. e. a connection brought out intermediate the ends of the coil. When the coil is .a high voltage coil and thus wound with fine wire, insulation problems have made it difiicult to bring out a tap and therefore in the past, it has been conventional practice to provide two separate coils with the end connections between the two coils providing the tap.
It is therefore desirable that a coil construction be provided which will permit bringing out a tap therefrom without the necessity for splitting the coil into two separate coils and further which will provide an anchor for the lead attached to the coil tap.
It is therefore an object of this invention to provide an improved tapped coil construction incorporating the desirable features set forth above.
Further objects and advantages of this invention will become apparent and the invention will be better understood by reference to the following description and the accompanying drawing, and the features of novelty which characterize this invention will be pointed out with particularity in the claims annexed to and forming a part of this specification.
In accordance with this invention, a coil body is provided wound on a spool and having a plurality of layers of wire. One or more, preferably two axially extending tubular members are wound between two of the coil layers at or near the point where the tap is to be brought out. A tap is taken from the coil body and connected to one end of an external tap lead. This connection is then positioned in one of the tubular members and the external lead extends through the other of the tubular members thereby anchoring the tap lead to the coil body.
In the drawing, Fig. 1 is a view in perspective, partially broken away, illustrating the improved tapped coil construction of this invention; and
Fig. 2 is a similar view illustrating the method of making the tapped connection of Fig. 1.
Referring now to the drawing, there is shown a high voltage coil, generally identified as 1 having a plurality of layers 2 of relatively fine wire wound on a spool 3. In order to provide for bringing out a tap from the coil 1, a pair of spaced apart axially extending tubular members 4 and 5, formed of suitable insulating material, are wound between two of the layers of the coil in the region from which the tap is to be brought out. These tubular members extend through substantially the entire axial length of the coil 1, as clearly shown in Figs. 1 and 2. To form the tap, a single coil of wire is pulled away from the outside of one of the layers forming a tap loop 6 as shown in Fig. 2. The tap loop 6 is connected to an end 7 of external tap lead 8 and this connection is then soldered, as at 9 in Fig. 1. The soldered connection 9 together with the adjacent portions of the tap loop 6 and external tap lead 8 are inserted in the tubular mem- United States P t O 2,787,769 Patented Apr. 2, i957 her 4, as shown in Fig. 1. External tap lead 8 is then brought through the other tubular member 5 with its other end 10 being on the side of the coil 1 remote from the side from which the tap loop 6 was taken. The finished coil may be bound together in any suitable manner, as by tape 11 which may also anchor the other external leads, one of which is shown at 12.
it will now be readily seen that this improved tapped coil construction securely anchors the tap lead to the coil and that since all parts of the tap lead and coil loop are confined to the portion of the coil body where the tap occurs, there are no points of high potential gradient between the tap lead and the coil as are created by conventional methods of bringing out and anchoring tap leads. Here it will be seen that no reasonable amount of pulling on the end 10 of the tap lead 8 or ordinary movement of lead will cause strain or breakage of the fine wire forming the tap loop 6.
While the improved lead anchoring arrangement of this invention has been shown in connection with a tap, it will be readily understood that it may also be used for making end connections as well as for tap connections. While two tubular members are shown, it will also be readily understood that only one more than two may be utilized.
While we have shown and described a particular embodiment of this invention, further modifications and improvements will occur to those skilled in the art. We desire that it be understood therefore that this invention is not limited to the form shown and we intend in the appended claims to cover all modifications which do not depart from the spirit and scope of this invention.
What we claim as new and desire to secure by Letters Patent of the United States is:
1. A tapped coil comprising a coil body having a plurality of layers of wire, a pair of axially extending tubular members formed of insulating material arranged between two of said coil body layers, said coil body having a tap taken from one side thereof, and an external tap lead, one end of said tap lead being connected to said coil body tap, said connection being positioned in one of said tubular members, said tap lead passing through the other of said tubular members and extending from the side of said coil body opposite from said one side thereby anchoring said tap lead to said coil body.
2. A tapped coil comprising a coil body having a plurality of layers of wire, a pair of axially extending tubular members formed of insulating material arranged between two of said layers, said coil body having a tap taken from one side thereof, and an external tap lead, one end of said tap lead being connected to said coil body tap, said connection and adjacent portions of said tap and tap lead being positioned in one of said tubular members, said tap lead passing through the other of said tubular members and extending from the side of said coil body opposite from said one side thereby anchoring said tap lead to said coil body.
3. A tapped coil comprising a coil body having a plurallity of layers of wire, a pair of spaced apart axially extending tubular members formed of insulating material wound between two of said coil body layers, said coil body having a tap loop taken from one layer thereof on one side of said coil body, and an external tap lead, one end of said tap lead being connected to said coil body tap loop, said connection and adjacent portions of said tap loop and said tap lead being inserted in one end of one of said tubular members, said tap lead passing through the other of said tubular members and extending from the side of said coil body opposite from said one side thereby anchoring said tap lead to said coil body.
4. A tapped coil comprising a coil body wound on a spool and having a plurality of layers of relatively fine wire, a pair of axially extending tubular members formed of insulating material wound between two of said coil body layers and extending through substantially the axial length of said coil body, said coil body having a tap taken from one side thereof, and an external tap lead, one end of said tap lead being connected to said coil body tap, said connection and adjacent portions of said tap and tap lead being inserted in one end of one of said tubular members, said tap lead passing through the other of said tubular members and extending from the side of said coil body opposite from said one side thereby anchoring said tap lead to said coil body.
5. A tapped coil comprising a coil body wound on a spool and having a plurality of layers of relatively fine wire, a pair of spaced apart axially extending tubular members formed of insulating material wound between two of said coil body layers and extending through substantially the axial length of said coil body, said coil body having a tap loop taken from the outside coil of one layer thereof on one side of said coil body, and an external tap lead, one end of said tap lead being connected to said coil body tap loop, said conection and adjacent portions of said tap loop and said tap lead being positioned in one of said tubular members, said tap lead passing through the other of said tubular members and extending from the side of said coil body opposite from said one side thereby anchoring said tap lead to said coil body.
6. A coil comprising a coil body having a plurality of layers of wire, a pair of axially extending tubular members formed of insulating material arranged btween two of said coil body layers, said coil body having a lead taken from one side thereof, and an external lead, one end of said external lead being connected to said coil lead, said connection being positioned in one of said tubular members, said external lead passing through the other of said tubular members and extending from the side of said coil body opposite from said one side thereby anchoring said external lead to said coil body.
References Cited in the file of this patent UNITED STATES PATENTS
US367858A 1953-07-14 1953-07-14 Tapped coil Expired - Lifetime US2787769A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US367858A US2787769A (en) 1953-07-14 1953-07-14 Tapped coil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US367858A US2787769A (en) 1953-07-14 1953-07-14 Tapped coil

Publications (1)

Publication Number Publication Date
US2787769A true US2787769A (en) 1957-04-02

Family

ID=23448926

Family Applications (1)

Application Number Title Priority Date Filing Date
US367858A Expired - Lifetime US2787769A (en) 1953-07-14 1953-07-14 Tapped coil

Country Status (1)

Country Link
US (1) US2787769A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2985950A (en) * 1959-02-06 1961-05-30 Advance Transformer Co Method of manufacturing coils
US3047935A (en) * 1956-11-27 1962-08-07 Western Electric Co Method of making toroidal coils
US4700167A (en) * 1986-08-29 1987-10-13 General Signal Corporation Bobbin construction with strain relief
US4808959A (en) * 1988-03-31 1989-02-28 Magnatek Universal Manufacturing Electrical coil with tap transferring to end-layer position
US5078674A (en) * 1989-02-10 1992-01-07 Cadwll Industries, Inc. Magnetic stimulator coils
US20090250503A1 (en) * 2006-08-30 2009-10-08 Kulicke And Soffa Industries, Inc. z-axis motion system for a wire bonding machine
US8466767B2 (en) 2011-07-20 2013-06-18 Honeywell International Inc. Electromagnetic coil assemblies having tapered crimp joints and methods for the production thereof
US8572838B2 (en) 2011-03-02 2013-11-05 Honeywell International Inc. Methods for fabricating high temperature electromagnetic coil assemblies
US8754735B2 (en) 2012-04-30 2014-06-17 Honeywell International Inc. High temperature electromagnetic coil assemblies including braided lead wires and methods for the fabrication thereof
US8860541B2 (en) 2011-10-18 2014-10-14 Honeywell International Inc. Electromagnetic coil assemblies having braided lead wires and methods for the manufacture thereof
US9027228B2 (en) 2012-11-29 2015-05-12 Honeywell International Inc. Method for manufacturing electromagnetic coil assemblies
US9076581B2 (en) 2012-04-30 2015-07-07 Honeywell International Inc. Method for manufacturing high temperature electromagnetic coil assemblies including brazed braided lead wires
US9722464B2 (en) 2013-03-13 2017-08-01 Honeywell International Inc. Gas turbine engine actuation systems including high temperature actuators and methods for the manufacture thereof
US20200350112A1 (en) * 2017-12-20 2020-11-05 Siemens Aktiengesellschaft Winding Assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1968600A (en) * 1933-06-09 1934-07-31 Gen Electric Electrical winding
US2072635A (en) * 1936-02-27 1937-03-02 Chicago Transformer Corp Terminal board
US2154070A (en) * 1936-07-16 1939-04-11 Western Electric Co Electrical coil
US2184272A (en) * 1937-12-17 1939-12-26 Gen Electric Electrical winding
US2633481A (en) * 1949-11-09 1953-03-31 Foster Transformer Company Terminal board for multitap transformer construction

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1968600A (en) * 1933-06-09 1934-07-31 Gen Electric Electrical winding
US2072635A (en) * 1936-02-27 1937-03-02 Chicago Transformer Corp Terminal board
US2154070A (en) * 1936-07-16 1939-04-11 Western Electric Co Electrical coil
US2184272A (en) * 1937-12-17 1939-12-26 Gen Electric Electrical winding
US2633481A (en) * 1949-11-09 1953-03-31 Foster Transformer Company Terminal board for multitap transformer construction

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3047935A (en) * 1956-11-27 1962-08-07 Western Electric Co Method of making toroidal coils
US2985950A (en) * 1959-02-06 1961-05-30 Advance Transformer Co Method of manufacturing coils
US4700167A (en) * 1986-08-29 1987-10-13 General Signal Corporation Bobbin construction with strain relief
US4808959A (en) * 1988-03-31 1989-02-28 Magnatek Universal Manufacturing Electrical coil with tap transferring to end-layer position
US5078674A (en) * 1989-02-10 1992-01-07 Cadwll Industries, Inc. Magnetic stimulator coils
US20090250503A1 (en) * 2006-08-30 2009-10-08 Kulicke And Soffa Industries, Inc. z-axis motion system for a wire bonding machine
US20110121053A1 (en) * 2006-08-30 2011-05-26 Kulicke And Soffa Industries, Inc. Z-axis motion system for a wire bonding machine
US8572838B2 (en) 2011-03-02 2013-11-05 Honeywell International Inc. Methods for fabricating high temperature electromagnetic coil assemblies
US9508486B2 (en) 2011-03-02 2016-11-29 Honeywell International Inc. High temperature electromagnetic coil assemblies
US8466767B2 (en) 2011-07-20 2013-06-18 Honeywell International Inc. Electromagnetic coil assemblies having tapered crimp joints and methods for the production thereof
US8860541B2 (en) 2011-10-18 2014-10-14 Honeywell International Inc. Electromagnetic coil assemblies having braided lead wires and methods for the manufacture thereof
US8754735B2 (en) 2012-04-30 2014-06-17 Honeywell International Inc. High temperature electromagnetic coil assemblies including braided lead wires and methods for the fabrication thereof
US9076581B2 (en) 2012-04-30 2015-07-07 Honeywell International Inc. Method for manufacturing high temperature electromagnetic coil assemblies including brazed braided lead wires
US9027228B2 (en) 2012-11-29 2015-05-12 Honeywell International Inc. Method for manufacturing electromagnetic coil assemblies
US9653199B2 (en) 2012-11-29 2017-05-16 Honeywell International Inc. Electromagnetic coil assemblies having braided lead wires and/or braided sleeves
US9722464B2 (en) 2013-03-13 2017-08-01 Honeywell International Inc. Gas turbine engine actuation systems including high temperature actuators and methods for the manufacture thereof
US20200350112A1 (en) * 2017-12-20 2020-11-05 Siemens Aktiengesellschaft Winding Assembly
US11626242B2 (en) * 2017-12-20 2023-04-11 Siemens Energy Global GmbH & Co. KG Winding assembly

Similar Documents

Publication Publication Date Title
US2787769A (en) Tapped coil
US2978530A (en) Conductor for transformer windings
US3102245A (en) Electrical transformer
US3480229A (en) Coil winding form
GB1354304A (en) Power transformer incorporating heat dissipation means
GB947012A (en) Improvements in coil formers for electrical induction apparatus
DE2231431A1 (en) SUMMARY CURRENT CONVERTER IN PARTICULAR FOR A FAULT CURRENT CIRCUIT SWITCH
US2807869A (en) Method of winding a wire coil
US2858514A (en) Insulating and lead anchoring means for transformers
US2728879A (en) Electrical coil
US3363210A (en) Coil and spool and an improved method of making a coil
US3461414A (en) Inductive coil and method of making the same
US2316558A (en) Transformer
US3394331A (en) Winding having a two turn conductive strip therearound
US1641374A (en) Induction coil
US2403457A (en) Terminal strip for inductive devices
US1939808A (en) Field coil
US2213093A (en) Meter potential coil
US1713941A (en) Method of winding coils
US2241761A (en) Electrical coil and a method of making the same
US2412609A (en) High-voltage transformer
US1976899A (en) Magneto armature
US1758820A (en) Electrical induction apparatus
US2431045A (en) Method of winding coils
US1503977A (en) Winding for electrical apparatus