US1538136A - Method of winding a coil of wire - Google Patents

Description

Patented May 19, 1925.

UNITED STATES PATENT OFFICE.

METHOD OF WINDING A COIL 0F WIRE.

Application filed November 25, 1924. Serial No. 752,252.

To all whom it may concern:

Be it known that we, WILLIAM A. PREN- TISS and HUGO PoETsoH, citizens of the United States, residing at Holyoke, in the county of Hampden and State of Massachusetts, have invented new and useful Improvements in Methods of Winding a Coil of lVire, of which the following is a specifintion.

This invention relates to improvements in the method of winding or forming a coil of wire, either rectangular or circular in cross section.

Broadly the invention consists in inserting the inner end of the wire in a slot or groove in the hub of a winding spool on which the coil is to be formed. Then inserting between the inner end of the wire and hub of the spool a member consisting of a piece of flexible material, as paste or card board, then rotating the wire coil winding spool in the usual manner whereby the piece of flexible material is simultaneously bent or folded about the hub of the winding spool by the inner turns of the wire as the spool is rotated. This member is firmly retained in place on the hub by the successive turns of the coil wire. The length of the strip of flexible material is preferably equal to the circumference of the hub of the spool so that its ends will meet when the winding is completed. After the winding of the coil is completed tie wires are next passed about the coil, both transversely and circumferentially of the same. Thetransverse tie wires being passed through the opening of the coil. These wires areloclzed together where they cross each other, with the resulting cifect thatthe turns of the coil of wire are firmly retained in place. The tie wires are passed through the axial opening of the coil and engage the inner surface of the piece of flexible materialthus retaining this member firmly in place. The piece of flexible material serves the additional purpose of accurately positioning the inner turns of the coil of wire so that it may be readily slipped onto a spool or reel for unwinding purposes, as used in a. stitching machine.

Eeferring to the drawings:

Fig. 1 is a perspective view of a portion of a coil winding spool showing only one of the spool heads in place with the usual slots for receiving the binding wires and illustrating the inner end of the coil of wire inserted in one of the slots of the hub of the spool and with the flexible material member inserted in the inner end ofthe wire.

Fig. 2 shows a view of the completed coil removed from the winding spool with the binding wires in place and the flexible ma 'terial member located within the inner turns designates one of the collapsible sectors of the hub ofone form of winding spool with the sectors shown spaced from each other to provide the openings 4:. 5 designates the inner end of the wire which is to be wound on the spool. Its inner end is bent as in dicated at 6 for 1nsertion in one of the spaces 4 for retaining the same against displacement when the spool is rotated. Be

fore the spool is rotated for winding the wire a flexiblemember 7 is inserted between the inner end 5 and. the hub sections. This member may be composed of any suitable mate-rialv as paste or cardboard and of a length equal to the circumference of the hub sectionswhereby its ends will justineet as indicated at 8. As the winding spool is rotated the flexible member 7 is'automatically wrapped around the hub sections the successive turns operating to retain this member in place, and operate to form a hollow core for the coil.

After the winding is completed the turns are retained in place by binding wires. In the construction shown the tie wire is applied as follows: One end of the wire is passed through the axial opening of the coil and in contact with the inner surface of the flexible member 7. This end is brought around and transversely of the turns of wire as indicated at 9 where its end 9 is twisted, about the free end 10. This free end is now carried circumferentially and transversely of the coil by passing the strand 11 transversely about the turns as indicated at 12 when it is carried through the opening 13, then upward at 14, then looped around the portion 10 at 15, (see Fig. 2) then forward at- 16, where it is again passed through the opening 13 and transversely around the coils as indicated at 17, where it is looped with the wire 16-. It is again looped about the turns of the coil as indicated at 18,

and so on until the starting tie at 9 is reached where its free end is twisted about the strand 10, as indicated in Fig. 3 at 19, in Fig. 3. In other words the tie wire is looped about the finished coil in both a transverse and circumferential manner whereby the turns are eflectually prevented from becoming displaced.

It is to be understood that the transverse loops 9, 11, 17, and 18 are'temporarily located in the openings 2 of the spool.

The finished hollow cylindrical core 7 serves the purpose of effectually retaining the inner turns of the wire in place, also its inner surface 7 provides a very suitable means on which to place any data relating for instance to the size or quality of the wire which is wound thereon. It may be used for advertising purposes, if desired.

Our present invention relates to the formation of a cylindrical shaped member from a strip of any suitable flexible material at the same time that wire or the like material is wound upon the flexible material. The invention is not necessarily confined to the winding of a coil of wire. In practice we find that paper or paste board is very desirable material to use in the formation of the cylindrical shaped core. The cylindrical shaped core of paper about which the turns of a coil of wire are wound is comparatively inexpensive and may be discarded when the core of wire is used. Although the drawings illustrate the coil of wire as ribbon, or rectangular in cross section, it is to be understood that wire which is circular in cross section may be readily wound about the strip of flexible material.

hat we claim is: r

1. The method of forming a coil of wire which consists in temporarily connecting the inner end of the coil to the hub of a winding spool, then inserting a flexible member beneath the inner end, then rotating the spool to wind the coil onto the spool and simultaneously wrap the flexible member about the hub of the winding spool, whereby the opening of the finished coil is provided with a lining.

2. The method of forming a coil of wire which consists in temporarily connecting the inner end of the coil to the hub of a winding spool, then inserting a flexible member beneath the inner end, then rotating the spool to wind the coil onto the spool and simultaneously wrap the flexible member about the hub of the winding spool, then securing the turns of the coil and flexible member in place with binding wires, whereby the opening of the finished coil is provided with a lining.

3. The method of forming a coil of wire which consists in temporarily connecting the inner end of the coil to the hub of a winding spool, then inserting a flexible member beneath the inner end,- then rotating the spool to wind the coil onto the spool and simultaneously wrap the flexible memher about the hub of the winding spool, then securing the turns of the coil and flexible member in place with binding wires, the binding wires being arranged both transversely and circumferentially ofthe coil, whereby the opening of the finished coil is provided with a lining;

4. A method of forming a cylindrical shaped core of flexible material for a coil of wire which consists in temporarily securing the inner end of the wire to the mandrel of a winding member,the'n inserting the inner end of the flexible member beneath the inner end of the wire and winding the wire on the member whereby the flexible member is wound about the mandrel of the winding member,

5. A method of forming a cylindrical shaped core of flexible material for a coil of: wire which consists in temporarily securing the inner end of the wire to the mandrel of a winding member, the inner end of the flexible member being beneath the inner end of the wire and winding the wire on the member and about the flexible material on the mandrel, the said core being retained in place with a suitable binding device which is passed around the wire and within the core.

6. The method of forming a cylinder from a strip of flexible material which consists in suitably supporting the strip on arevolvable mandrel, then winding wire or the like article about the flexible material for winding the flexible material about the mandrel, the inner end of the same strip being inserted below the inner end of the wire.

7. The method of forming a cylindrical shaped article or core for acoil of wire from a strip of paper" or like flexible material by winding or wrapping wire or the like about the strip, the inner end of the strip being suitably supported during the winding operation on a mandrel, whereby the strip is wound about the mandrel by the wire. l

8. The method of forming a cylinder from a strip of flexible material which consists in suitably supporting the strip, then Winding Wire or the like article about the flexible material, the inner end of the said strip being inserted below the inner end of 5 the strip.

9. The method of forming a cylindrical shaped article or core from a strip of paper or like flexible material by Winding 0r Wrapping Wire or the like about the strip, the inner end of the strip being suitably sup- 10 ported during the Winding operation.

WVILLIAM A. PRENTISS. HUGO POETSOH.

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