US1723215A - Manufacture of wires and tapes for loading telephone conductors - Google Patents

Manufacture of wires and tapes for loading telephone conductors Download PDF

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Publication number
US1723215A
US1723215A US88952A US8895226A US1723215A US 1723215 A US1723215 A US 1723215A US 88952 A US88952 A US 88952A US 8895226 A US8895226 A US 8895226A US 1723215 A US1723215 A US 1723215A
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Prior art keywords
tapes
wires
whole
manufacture
copper
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Expired - Lifetime
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US88952A
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Smith Willoughby Statham
Garnett Henry Joseph
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper

Definitions

  • This invention relates to the manufacture 5 able for the purpose are composed o nickel,
  • the nickel ranges from 30% to 33% of the whole, the iron from 58% to 65% of the Whole, and the copper from 2% to 6% of the 1 whole.
  • Nickel 33 Iron 65 Copper 2 has an initial permeability of 1000 and a specific resistance of 80 michroms per cm".
  • an additional element which may be chromium, vanadium, tungsten, molybdenum, silicon, aluminum or titanium;
  • the alloys require suitable heat treatment. This consists of annealing in an atmosphere of nitrogen at a temperature of 850 930 C. followed by cooling in the same inert gas.
  • mag'anese not exceeding 1% may be added to promote forgeability and ductility.
  • Carbon free wires or tapes for loading magnetic conductors comprising nickel 30% to 33% of the whole, iron 58% to 65% of the whole, and copper 2% to 6% of the whole.
  • Carbon free wires or tapes for loading magnetic conductors comprising nickel 30% to 33% of the whole, iron 58% to 65% of the whole, copper 2% to 6% of the whole, and a fourth element not exceeding 3% of the whole and which is adapted to increase the electrical resistance, the combined percentage of the copper and said added element not exceeding 7% of the whole.
  • Carbon free wires or tapes for'loading magnetic conductors comprising nickel 33% iron 63.5% copper 2.5%, and vanadium 0.5%.

Description

An alloy composed of Patented Aug. 6, 1929.
UNITED STATES PATENT OFFICE.
WILLOUGHBY STATHAM SMITH, O]? NEWTON POPPLEFORD, AND HENRY JOSEPH GABNETT, OF SEVENOAKS, ENGLAND.
IANUFACTURE OF WIRES AND TAPES FOR LOADING TELEPHONE CONDUCTORS.
Io Drawing. Application filed February 17, 1926, Serial No. 88,952, and in Great Britain February 17, 1925.
This invention relates to the manufacture 5 able for the purpose are composed o nickel,
copper and iron and free from carbon, in which the nickel ranges from 30% to 33% of the whole, the iron from 58% to 65% of the Whole, and the copper from 2% to 6% of the 1 whole.-
As a result of our experiments we find that these alloys have valuable properties.
Example.
Per cent.
' Nickel 33 Iron 65 Copper 2 has an initial permeability of 1000 and a specific resistance of 80 michroms per cm".
Forcertain purposes, such as for increasing the electrical resistance of the alloy, we
introduced an additional element, which may be chromium, vanadium, tungsten, molybdenum, silicon, aluminum or titanium; the
percentage of the added element should not Nickel 33 35 Iron 64.5
Copper 2 Vanadium 0.-5
when suitably annealed had an initial per o meability of 600 and a specific resistance of 85 michroms per cm.
When the vanadium is increased to 0.75% the specific resistance is 89 michroms per cm and the initial permeability 400.
An alloy of the following composition Per cent. Nickel 33 Iron 63. 5 Copper 2. 5 Chromium 1.0
gave an initial permeability of 610 and a specific resistance of 90 michroms per cm.
In order to develop the desired magnetic properties the alloys require suitable heat treatment. This consists of annealing in an atmosphere of nitrogen at a temperature of 850 930 C. followed by cooling in the same inert gas.
Small amounts of mag'anese not exceeding 1% may be added to promote forgeability and ductility.
What we claim is 1. Carbon free wires or tapes for loading magnetic conductors'comprising nickel 30% to 33% of the whole, iron 58% to 65% of the whole, and copper 2% to 6% of the whole.
2. Carbon free wires or tapes for loading magnetic conductors comprising nickel 30% to 33% of the whole, iron 58% to 65% of the whole, copper 2% to 6% of the whole, and a fourth element not exceeding 3% of the whole and which is adapted to increase the electrical resistance, the combined percentage of the copper and said added element not exceeding 7% of the whole.
3. Carbon free wires or tapes for'loading magnetic conductors comprising nickel 33% iron 63.5% copper 2.5%, and vanadium 0.5%. v
In testimony that-we claim the foregoing as our invention, we have signed our names this fifth day of February, 1926.
WiLLoUoHBY STATHAM SMITH. HENRY JOSEPH GARNETT.
US88952A 1925-02-17 1926-02-17 Manufacture of wires and tapes for loading telephone conductors Expired - Lifetime US1723215A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1723215X 1925-02-17

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US1723215A true US1723215A (en) 1929-08-06

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US88952A Expired - Lifetime US1723215A (en) 1925-02-17 1926-02-17 Manufacture of wires and tapes for loading telephone conductors

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4309489A (en) * 1979-05-14 1982-01-05 Tokyo Shibaura Denki Kabushiki Kaisha Fe-Ni-Cu-Cr Layered bimetal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4309489A (en) * 1979-05-14 1982-01-05 Tokyo Shibaura Denki Kabushiki Kaisha Fe-Ni-Cu-Cr Layered bimetal

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