US1686098A - Insulated flexible conductor and method of producing same - Google Patents

Insulated flexible conductor and method of producing same Download PDF

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Publication number
US1686098A
US1686098A US189731A US18973127A US1686098A US 1686098 A US1686098 A US 1686098A US 189731 A US189731 A US 189731A US 18973127 A US18973127 A US 18973127A US 1686098 A US1686098 A US 1686098A
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US
United States
Prior art keywords
flexible conductor
conductor
producing same
insulated flexible
flexible
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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US189731A
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English (en)
Inventor
Meiwald Franz
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Individual
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Individual
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Publication date
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Publication of US1686098A publication Critical patent/US1686098A/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables

Definitions

  • the cable is stiffened by luting together the threads of the winding, consisting of any fibrous material, by subsequently coating or varnishing the same with resin, gutta-percha or similar sticky materials.
  • This stiffness is objectionable in the case of a conducting line which, in contra-distinction to the cable, is designed to remain especially flexible and the conductor of which consists for instance of fine wires for securing extreme flexibility.
  • the imroved flexible conductor which comprises in the well known association the central core or carrier thread 1, thestranded wires 2, the inner cotton covering 3, the close cot ton sheath or serving 5, and the outer braided covering 6, is additionally generally strengthened and im roved in its insulating capacity, without impairment of its flexibility, by the provision of a covering 4. of thin gutta-percha tape which is wound in relatively steepalfi pitched helical edge-over:
  • Telephone wires insulated in this manner with very pliant gutta-percha tape as thin as paper are just as flexible as the wires produced according to the known method, but compared with the latter they show the insulation-values indicated in the following table, whereby A designates the samples according to the known method and B designates the samples manufactured according to the present invention.
  • the conductor produced according to the present invention shows to 400 times the insulation-resistance, compared with the known conductors, whereby not only a quite novel technical effect is obtained, but also an economical effect in consequence of its longer life.
  • a low-current flexible conductor comprising a flexible metallic conductor core, a covering, and an insulator between the covering and the core and consisting of an edge lapped tissue-thin helically wound guttapercha strip directly enveloping the core.
  • a method of making a flexible conductor so as to insulate the conducting element without impairing the flexibility of said element which comprises interposing between a suitable outer fabric covering and the conducting element and disposing in contact with the latter a substantially tissuethin helically-wound edge-lapped insulating band of gutta-percha.
  • a flexible conductor comprising a conductor core, a suitable outer fabric covering, and an insulating band of substantially tissue-thin gutta-percha between the conductor core and cover and helically wound 20 about the conductor core with the edges of its windings overlapping.

Landscapes

  • Insulated Conductors (AREA)
  • Organic Insulating Materials (AREA)
  • Insulating Bodies (AREA)
US189731A 1926-12-14 1927-04-29 Insulated flexible conductor and method of producing same Expired - Lifetime US1686098A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT278993X 1926-12-14

Publications (1)

Publication Number Publication Date
US1686098A true US1686098A (en) 1928-10-02

Family

ID=3670692

Family Applications (1)

Application Number Title Priority Date Filing Date
US189731A Expired - Lifetime US1686098A (en) 1926-12-14 1927-04-29 Insulated flexible conductor and method of producing same

Country Status (4)

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US (1) US1686098A (en, 2012)
BE (1) BE343103A (en, 2012)
FR (1) FR636014A (en, 2012)
GB (1) GB278993A (en, 2012)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3325990A (en) * 1964-05-21 1967-06-20 Wall Rope Works Inc Ropes and methods of making the same
US6314855B1 (en) * 1998-12-09 2001-11-13 Siemens Aktiengesellschaft Cable with a cable core, a cable jacket and a tear thread

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3325990A (en) * 1964-05-21 1967-06-20 Wall Rope Works Inc Ropes and methods of making the same
US6314855B1 (en) * 1998-12-09 2001-11-13 Siemens Aktiengesellschaft Cable with a cable core, a cable jacket and a tear thread

Also Published As

Publication number Publication date
BE343103A (en, 2012)
FR636014A (fr) 1928-03-30
GB278993A (en) 1927-10-20

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