US3206923A - Reinforced conductive yarn - Google Patents
Reinforced conductive yarn Download PDFInfo
- Publication number
- US3206923A US3206923A US280915A US28091563A US3206923A US 3206923 A US3206923 A US 3206923A US 280915 A US280915 A US 280915A US 28091563 A US28091563 A US 28091563A US 3206923 A US3206923 A US 3206923A
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- US
- United States
- Prior art keywords
- conductive
- yarn
- thread
- carbon black
- reinforced
- 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
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Classifications
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/46—Sewing-cottons or the like
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/441—Yarns or threads with antistatic, conductive or radiation-shielding properties
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S57/00—Textiles: spinning, twisting, and twining
- Y10S57/901—Antistatic
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S57/00—Textiles: spinning, twisting, and twining
- Y10S57/903—Sewing threads
Definitions
- the invention has for an object to provide a novel and improved reinforced conductive thread having a tensile strength such as to be capable of being used in a sewing machine without breaking under longitudinal stress.
- the invention consists in the conductive thread as hereinafter described and particularly defined in the claim at the end of this specification.
- FIG. 1 is an enlarged view of a reinforced conductive thread embodying the present invention.
- FIG. 2 is an enlarged view of a portion of the conductive thread shown in FIG. 1.
- the present invention contemplates a reinforced conductive thread having a tensile strength such as to be capable of being handled in a sewing machine without breaking and which is particularly adapted for sewing into fabric, leather or other non-conductive materials to provide a conductive path therein arranged to dissipate static electric charges.
- the illustrated conductive thread may be used with particular advantage as an improved manner of providing a conductive path in footwear used in hazardous occupations, such as in hospital surgery, munitions factories, film processing or wherever explosive and inflammable products are made and which are subject to explosion or fire from static spark.
- the conductive materials generally used in such footwear comprised either a conductive rubber or a conductive vinyl material treated with carbon black.
- One disadvantage of such prior conductive materials for conductive footwear is that they have a tendency to leach 0r bleed off the carbon black in use. For example, such materials used in footwear would tend to soil the stockings of the wearer. Also, such materials tend to bleed off the carbon black when laundered.
- a conductive yarn preferably a viscose rayon yarn treated with carbon black is used as the conducting element.
- such treated material will not bleed off onto stockings or other wearing apparel, and will also retain safe conductivity after repeated launderings.
- such treated material is inherently of low tensile strength incapable of being handled in a sewing machine.
- non-conductive yarns such as strands of cotton, nylon or other natural or synthetic fibers of a greater tensile strength than the treated viscose rayon so as to reinforce the latter to render it capable of being handled in a sewing machine.
- 10 represents a preferred form of reinforced conductive thread prepared in accordance with the present invention and which is referred to in the art as cabled thread.
- the illustrated cabled thread comprises three pairs of double strands of yarn twisted together, each pair of strands being indicated by the numeral 12.
- Each double strand of yarn includes a length of viscose rayon yarn 14 treated or impregnated with a carbon black to render it conductive and, further, includes a length of non-conductive yarn 16 comprising a reinforcing yarn having a relatively high tensile strength.
- the conductive yarn 14 may be prepared by running a viscose rayon yarn through a vinyl carbon black solution.
- a viscose rayon yarn appears to have an afiinity for the carbon black solution so that the solution is readily absorbed by the viscose rayon yarn to an extent such that the carbon black becomes more or less fixed in the fibers whereby the carbon black will not rub off or bleed onto articles of clothing with which the yarn may come in contact.
- Such yarns treated with carbon black to render them conductive will withstand laundering without leaching or bleeding of the carbon black and without losing its conductive characteristics.
- the viscose rayon yarn thus treated is inherently of relatively low tensile strength.
- the reinforcing yarn 16 may comprise any suitable untreated non-conductive yarn having a relatively high tensile strength.
- Such yarns may include relatively strong rayon, cotton, nylon and like yarns which may be twisted or intertwined with the carbon black conductive yarn to provide a two-thread reinforced conductive yarn 12 of relatively high tensile strength.
- Such two-thread yarn may then be twisted or spun with like two-thread yarns, as illustrated in FIG. 1, to provide a cabled thread capable of being handled in a sewing machine for the purpose of sewing a continuous conductive path or pattern into a fabric, leather or other non-conductive materials to render the same capable of dissipating static electric charges.
- yarns of conductive and non-conductive fibers may be combined in other proportions to provide a conductive cabled thread of high tensile strength.
- the illustrated thread for example, comprises a 2/ 3/ 300 denier yarn using 50% standard rayon and 50% carbon black yarn.
- conductive thread sewn into fabric or other material that can be sewn finds many advantages in the manufacture of conductive shoes, conductive shoe covers, conductive gowns for surgeons, draperies, mattress and pillow covers, machine covers and the like wherever it is desired to provide a conductive path for static electricity. It may be used with advantage in automobile seat covers to eliminate the static problem and as a conductor for electric circuits in radios and the like. In practice it has been found that high static producing materials, such as nylon and wool can be made safe to wear with no danger of static build-up when a conductive thread is sewn throughout the nylon or wool fabric and when such conductive thread is in contact with the body for safe dissipa tion of any static charge to a conductive floor.
Description
Se t. 21, 1965 R. w. PRICE REINFORCED CONDUCTIVE YARN Filed May 16, 1963 FIG.2
I NVENTOR. Qussefl H! Price ww ATTOQ/VZEY United States Patent 3,206,923 REINFORCED CONDUCTIVE YARN Russell W. Price, 11 Merton St., Newton, Mass. Filed May 16, 1963, Ser. No. 280,915 1 Claim. (Cl. 57-140) This invention relates to a conductive thread and more particularly to a reinforced conductive thread.
The invention has for an object to provide a novel and improved reinforced conductive thread having a tensile strength such as to be capable of being used in a sewing machine without breaking under longitudinal stress.
With this general object in view and such others as may hereinafter appear, the invention consists in the conductive thread as hereinafter described and particularly defined in the claim at the end of this specification.
In the drawings illustrating the preferred embodiment of the invention:
FIG. 1 is an enlarged view of a reinforced conductive thread embodying the present invention; and
FIG. 2 is an enlarged view of a portion of the conductive thread shown in FIG. 1.
In general, the present invention contemplates a reinforced conductive thread having a tensile strength such as to be capable of being handled in a sewing machine without breaking and which is particularly adapted for sewing into fabric, leather or other non-conductive materials to provide a conductive path therein arranged to dissipate static electric charges. In practice the illustrated conductive thread may be used with particular advantage as an improved manner of providing a conductive path in footwear used in hazardous occupations, such as in hospital surgery, munitions factories, film processing or wherever explosive and inflammable products are made and which are subject to explosion or fire from static spark. In such hazardous occupation safety regulations require that the floors in the building be conductive and the occupants of the building are required to wear conductive footwear so that any charges of static electricity generated by friction by the occupant may pass harmlessly from his body through the conductive footwear and into the conductive floor.
Prior to the present invention the conductive materials generally used in such footwear comprised either a conductive rubber or a conductive vinyl material treated with carbon black. One disadvantage of such prior conductive materials for conductive footwear is that they have a tendency to leach 0r bleed off the carbon black in use. For example, such materials used in footwear would tend to soil the stockings of the wearer. Also, such materials tend to bleed off the carbon black when laundered.
In accordance with the present invention a conductive yarn, preferably a viscose rayon yarn treated with carbon black is used as the conducting element. In practice such treated material will not bleed off onto stockings or other wearing apparel, and will also retain safe conductivity after repeated launderings. However, it was found that such treated material is inherently of low tensile strength incapable of being handled in a sewing machine. In order to overcome this disadvantage such conductive strands of yarn are intertwined with non-conductive yarns, such as strands of cotton, nylon or other natural or synthetic fibers of a greater tensile strength than the treated viscose rayon so as to reinforce the latter to render it capable of being handled in a sewing machine.
Referring now to the drawings, 10 represents a preferred form of reinforced conductive thread prepared in accordance with the present invention and which is referred to in the art as cabled thread. The illustrated cabled thread comprises three pairs of double strands of yarn twisted together, each pair of strands being indicated by the numeral 12. Each double strand of yarn includes a length of viscose rayon yarn 14 treated or impregnated with a carbon black to render it conductive and, further, includes a length of non-conductive yarn 16 comprising a reinforcing yarn having a relatively high tensile strength.
The conductive yarn 14 may be prepared by running a viscose rayon yarn through a vinyl carbon black solution. In practice it was found that a viscose rayon yarn appears to have an afiinity for the carbon black solution so that the solution is readily absorbed by the viscose rayon yarn to an extent such that the carbon black becomes more or less fixed in the fibers whereby the carbon black will not rub off or bleed onto articles of clothing with which the yarn may come in contact. Further, it was found that such yarns treated with carbon black to render them conductive will withstand laundering without leaching or bleeding of the carbon black and without losing its conductive characteristics. The viscose rayon yarn thus treated is inherently of relatively low tensile strength.
The reinforcing yarn 16 may comprise any suitable untreated non-conductive yarn having a relatively high tensile strength. Such yarns may include relatively strong rayon, cotton, nylon and like yarns which may be twisted or intertwined with the carbon black conductive yarn to provide a two-thread reinforced conductive yarn 12 of relatively high tensile strength. Such two-thread yarn may then be twisted or spun with like two-thread yarns, as illustrated in FIG. 1, to provide a cabled thread capable of being handled in a sewing machine for the purpose of sewing a continuous conductive path or pattern into a fabric, leather or other non-conductive materials to render the same capable of dissipating static electric charges. It will be obvious that yarns of conductive and non-conductive fibers may be combined in other proportions to provide a conductive cabled thread of high tensile strength. The illustrated thread, for example, comprises a 2/ 3/ 300 denier yarn using 50% standard rayon and 50% carbon black yarn.
The use of conductive thread sewn into fabric or other material that can be sewn finds many advantages in the manufacture of conductive shoes, conductive shoe covers, conductive gowns for surgeons, draperies, mattress and pillow covers, machine covers and the like wherever it is desired to provide a conductive path for static electricity. It may be used with advantage in automobile seat covers to eliminate the static problem and as a conductor for electric circuits in radios and the like. In practice it has been found that high static producing materials, such as nylon and wool can be made safe to wear with no danger of static build-up when a conductive thread is sewn throughout the nylon or wool fabric and when such conductive thread is in contact with the body for safe dissipa tion of any static charge to a conductive floor.
While the preferred embodiment of the invention has been herein illustrated and described, it will be understood it conductive, and a length of reinforcing yarn, free of 10 carbon black, twisted together with the conductive yarn.
References Cited by the Examiner UNITED STATES PATENTS Barnard et a1 57-157 Davis 57-140 Watson 57--157 Comer 57157 Bulgin 57-153 X Pitts 57153 MERVIN STEIN, Primary Examiner.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US280915A US3206923A (en) | 1963-05-16 | 1963-05-16 | Reinforced conductive yarn |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US280915A US3206923A (en) | 1963-05-16 | 1963-05-16 | Reinforced conductive yarn |
Publications (1)
Publication Number | Publication Date |
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US3206923A true US3206923A (en) | 1965-09-21 |
Family
ID=23075153
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US280915A Expired - Lifetime US3206923A (en) | 1963-05-16 | 1963-05-16 | Reinforced conductive yarn |
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US (1) | US3206923A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3490224A (en) * | 1967-12-27 | 1970-01-20 | Pierre Bourgeas | Composite metallic and textile yarn |
US3706195A (en) * | 1970-02-13 | 1972-12-19 | Ici Ltd | Synthetic yarns |
DE2838881A1 (en) * | 1977-09-06 | 1979-03-22 | Standard Oil Co | CONDUCTIVE SECONDARY BASE FABRIC AND TUFTED CARPETS MADE WITH IT |
US4209687A (en) * | 1977-01-27 | 1980-06-24 | Therglas Gmbh Fur Flachenheizung | Laminated transparent pane |
US4232082A (en) * | 1979-07-11 | 1980-11-04 | Nippon Keori Kabushiki Kaisha | Anti-electrostatically guarded worsted suiting |
DE3036931A1 (en) * | 1979-10-04 | 1981-04-23 | Viscosuisse S.A., Emmenbrücke | ANTISTATIC TWO-COMPONENT THREAD AND METHOD AND DEVICE FOR ITS PRODUCTION |
US4387555A (en) * | 1981-09-28 | 1983-06-14 | Robinson Thread Company | Ornamental thread and method of forming same |
WO2010028891A1 (en) * | 2008-09-12 | 2010-03-18 | Rud Ketten Rieger & Dietz Gmbh & Co. Kg | Anti-slip device for shoes |
US20100064654A1 (en) * | 2005-07-21 | 2010-03-18 | Walter Nuesch | High-security cable |
USD695970S1 (en) * | 2011-09-23 | 2013-12-17 | Jennifer Beinke | Leash |
USD695975S1 (en) * | 2011-09-23 | 2013-12-17 | Jennifer Beinke | Adjustable collar |
DE102019132028B3 (en) * | 2019-11-26 | 2021-04-15 | Deutsche Institute Für Textil- Und Faserforschung Denkendorf | Piezoresistive force sensor |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2443782A (en) * | 1944-04-07 | 1948-06-22 | Pacific Mills | Textile material of comparatively low electric resistance and method of producing the same |
US2448782A (en) * | 1945-05-14 | 1948-09-07 | Archibald H Davis | Composite strand and fabric |
US2473183A (en) * | 1947-07-16 | 1949-06-14 | Bates Mfg Co | Electrically conductive fabric |
US2777310A (en) * | 1955-10-31 | 1957-01-15 | Alamance Ind Inc | Stretch yarn and fabric and method of making same |
US2845962A (en) * | 1953-07-14 | 1958-08-05 | Dunlop Rubber Co | Antistatic fabrics |
US3008215A (en) * | 1958-01-31 | 1961-11-14 | Du Pont | Antistatic textile material |
-
1963
- 1963-05-16 US US280915A patent/US3206923A/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2443782A (en) * | 1944-04-07 | 1948-06-22 | Pacific Mills | Textile material of comparatively low electric resistance and method of producing the same |
US2448782A (en) * | 1945-05-14 | 1948-09-07 | Archibald H Davis | Composite strand and fabric |
US2473183A (en) * | 1947-07-16 | 1949-06-14 | Bates Mfg Co | Electrically conductive fabric |
US2845962A (en) * | 1953-07-14 | 1958-08-05 | Dunlop Rubber Co | Antistatic fabrics |
US2777310A (en) * | 1955-10-31 | 1957-01-15 | Alamance Ind Inc | Stretch yarn and fabric and method of making same |
US3008215A (en) * | 1958-01-31 | 1961-11-14 | Du Pont | Antistatic textile material |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3490224A (en) * | 1967-12-27 | 1970-01-20 | Pierre Bourgeas | Composite metallic and textile yarn |
US3706195A (en) * | 1970-02-13 | 1972-12-19 | Ici Ltd | Synthetic yarns |
US4209687A (en) * | 1977-01-27 | 1980-06-24 | Therglas Gmbh Fur Flachenheizung | Laminated transparent pane |
DK155191B (en) * | 1977-09-06 | 1989-02-27 | Amoco Corp | LEADING SECONDARY BASKET SELECTED FOR USE IN A TUFFED TAPE |
DE2838881A1 (en) * | 1977-09-06 | 1979-03-22 | Standard Oil Co | CONDUCTIVE SECONDARY BASE FABRIC AND TUFTED CARPETS MADE WITH IT |
US4232082A (en) * | 1979-07-11 | 1980-11-04 | Nippon Keori Kabushiki Kaisha | Anti-electrostatically guarded worsted suiting |
DE3036931A1 (en) * | 1979-10-04 | 1981-04-23 | Viscosuisse S.A., Emmenbrücke | ANTISTATIC TWO-COMPONENT THREAD AND METHOD AND DEVICE FOR ITS PRODUCTION |
US4387555A (en) * | 1981-09-28 | 1983-06-14 | Robinson Thread Company | Ornamental thread and method of forming same |
US20100064654A1 (en) * | 2005-07-21 | 2010-03-18 | Walter Nuesch | High-security cable |
US8256200B2 (en) * | 2005-07-21 | 2012-09-04 | Cortex Humbelin Ag | High-security cable |
WO2010028891A1 (en) * | 2008-09-12 | 2010-03-18 | Rud Ketten Rieger & Dietz Gmbh & Co. Kg | Anti-slip device for shoes |
USD695970S1 (en) * | 2011-09-23 | 2013-12-17 | Jennifer Beinke | Leash |
USD695975S1 (en) * | 2011-09-23 | 2013-12-17 | Jennifer Beinke | Adjustable collar |
DE102019132028B3 (en) * | 2019-11-26 | 2021-04-15 | Deutsche Institute Für Textil- Und Faserforschung Denkendorf | Piezoresistive force sensor |
WO2021104899A1 (en) | 2019-11-26 | 2021-06-03 | Deutsche Institute Für Textil- Und Faserforschung Denkendorf | Piezoresistive force sensor |
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