US716311A - Electrical conductor. - Google Patents

Electrical conductor. Download PDF

Info

Publication number
US716311A
US716311A US10866002A US1902108660A US716311A US 716311 A US716311 A US 716311A US 10866002 A US10866002 A US 10866002A US 1902108660 A US1902108660 A US 1902108660A US 716311 A US716311 A US 716311A
Authority
US
United States
Prior art keywords
core
resistance
electrical conductor
conductor
temperature
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
US10866002A
Inventor
Elihu Thomson
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 US10866002A priority Critical patent/US716311A/en
Application granted granted Critical
Publication of US716311A publication Critical patent/US716311A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
    • D01F11/10—Chemical after-treatment of artificial filaments or the like during manufacture of carbon
    • D01F11/14—Chemical after-treatment of artificial filaments or the like during manufacture of carbon with organic compounds, e.g. macromolecular compounds
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2918—Rod, strand, filament or fiber including free carbon or carbide or therewith [not as steel]
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2918—Rod, strand, filament or fiber including free carbon or carbide or therewith [not as steel]
    • Y10T428/292—In coating or impregnation

Definitions

  • My present invention comprises a com- IO pound electrical conductor the component elements of which consist of materials having temperature coefficients of opposite signs. These elements are proportioned relatively to each other, so that the increase of resistance of one of the elements produced by variation of temperature balances the decrease of resistance of the other element, thereby maintaining the resistance of the conductor as a whole at a constant value.
  • Figure 1 represents one embodiment of my invention
  • Fig. 2 a modification.
  • the conductor in the shape of a wire, having a core of one material and a concentric coating or skin of another material, these materials being chosen so that the temperature coefficient of one is positive and that of the other negative. Moreover, the relative proportion of the materials used is such that the variation of resistance with a given change of temperature of one of the elements of the conductor is compensated for by the opposite variation of resistance of the other element.
  • the core 1 of the conductor which in this figure is represented in cross-section, is formed of a material-such as copper, German silver, iron, platinum, or the likehavo ing a positive temperature coefficient. Over this core is applied a coating of a material having a negative coefficient-such, for example, as certain alloys or carbon. This coating is indicated at 2, and if it be of carbon may be applied by heating the core in an atmosphere composed of a hydrocarbon. The resulting decomposition of the carbon deposits the carbon on the wire constituting the core, and this deposition is continued until the desired thickness is obtained.
  • the exact proportion of the core and the outer covering of the conductor depends upon the particular materials selected.
  • the conductor is shown as having the material possessing anegative temperature coeificientin this case carbon-constituting the core of the conductor, the outer shell or coating of which is formed of material having a positive temperature coefficient.
  • the core which is indicated at 3, may be constructed like an ordinary incandescent-lamp filament, but of any desired length, and may be coated with the selected metal by means of electrical deposition, the coating beingindicated at 4. This coating is made of sufficient depth'so that its variation .of resistance with temperature balances or compensates for the opposite variation of resistance of the carbon core.
  • a compound electrical conductor composed of elements having temperature coefficients of opposite signs and proportioned in amount, relatively to each other, so that the variation of resistance of one element with temperature compensates for the opposite variation of resistance of the other element.
  • An electrical conductor formed with a core and a coating or shell superposed upon said core, the core and the shell being of such materials and proportioned relatively to each other so that their joint resistance is unaffected by temperature.

Description

No. 7l6,3ll.
Patented Dec. l6, I902 E.-THOMSON. I
ELECTRICAL CONDUCTOR.
(No Model.)
(Application fllod my 28, 1902.\
11/1114/1/1/ "nun/11'1" IIIII/I/I l/ I I a IIIIIIIIIIIII(III;IIIIIII Witnesses.
Inventor. Z fa/f/sflN Wmson. #Z a%w. by @A "m: mums rzrzns co, vhm'uumh, WASHINGTON. u'c
UNI ED STATES PATENT OFFICE.
ELIHU THOMSON, OF SWAMPSOOTT, MASSACHUSETTS, ASSIGNOR TO GEN- ERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.
ELECTRICAL CONDUCTOR.
SPECIFICATION forming part of Letters Patent N 0. 716,311, dated December 16, 1902.
7 Application filed May 23,1902. Serial No. 108,660. (No model.)
To all whom, it may concern/.-
Be it known that I, ELIHU THOMSON, a citizen of the United States, residing at Swampscott, county of Essex, State of Massachusetts,
have invented certain new and useful Improvements in Electrical Conductors, (Case No. 2,598,) of. which the following is a specification.
My present invention comprises a com- IO pound electrical conductor the component elements of which consist of materials having temperature coefficients of opposite signs. These elements are proportioned relatively to each other, so that the increase of resistance of one of the elements produced by variation of temperature balances the decrease of resistance of the other element, thereby maintaining the resistance of the conductor as a whole at a constant value.
In the drawings, Figure 1 represents one embodiment of my invention, and Fig. 2 a modification.
In carrying my invention into practical may form the conductor in the shape of a wire, having a core of one material and a concentric coating or skin of another material, these materials being chosen so that the temperature coefficient of one is positive and that of the other negative. Moreover, the relative proportion of the materials used is such that the variation of resistance with a given change of temperature of one of the elements of the conductor is compensated for by the opposite variation of resistance of the other element.
In Fig. 1 the core 1 of the conductor, which in this figure is represented in cross-section, is formed of a material-such as copper, German silver, iron, platinum, or the likehavo ing a positive temperature coefficient. Over this core is applied a coating of a material having a negative coefficient-such, for example, as certain alloys or carbon. This coating is indicated at 2, and if it be of carbon may be applied by heating the core in an atmosphere composed of a hydrocarbon. The resulting decomposition of the carbon deposits the carbon on the wire constituting the core, and this deposition is continued until the desired thickness is obtained. The exact proportion of the core and the outer covering of the conductor depends upon the particular materials selected.
In Fig. 2 the conductor is shown as having the material possessing anegative temperature coeificientin this case carbon-constituting the core of the conductor, the outer shell or coating of which is formed of material having a positive temperature coefficient. The core, which is indicated at 3, may be constructed like an ordinary incandescent-lamp filament, but of any desired length, and may be coated with the selected metal by means of electrical deposition, the coating beingindicated at 4. This coating is made of sufficient depth'so that its variation .of resistance with temperature balances or compensates for the opposite variation of resistance of the carbon core.
What I claim as new, and desire to secure by Letters Patent of the United States, is-
1. A compound electrical conductor composed of elements having temperature coefficients of opposite signs and proportioned in amount, relatively to each other, so that the variation of resistance of one element with temperature compensates for the opposite variation of resistance of the other element.
2. An electrical conductor formed with a core and a coating or shell superposed upon said core, the core and the shell being of such materials and proportioned relatively to each other so that their joint resistance is unaffected by temperature.
In witness whereof I have hereunto set my hand this 21st day of May, 1902.
ELIHU THOMSON.
Witnesses:
DUGALD MoK. MOKILLOP, JOHN A. MCMANUS.
US10866002A 1902-05-23 1902-05-23 Electrical conductor. Expired - Lifetime US716311A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10866002A US716311A (en) 1902-05-23 1902-05-23 Electrical conductor.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10866002A US716311A (en) 1902-05-23 1902-05-23 Electrical conductor.

Publications (1)

Publication Number Publication Date
US716311A true US716311A (en) 1902-12-16

Family

ID=2784831

Family Applications (1)

Application Number Title Priority Date Filing Date
US10866002A Expired - Lifetime US716311A (en) 1902-05-23 1902-05-23 Electrical conductor.

Country Status (1)

Country Link
US (1) US716311A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2450007A (en) * 1942-11-23 1948-09-28 Standard Telephones Cables Ltd Carburized filament and method for treating the same
US2679680A (en) * 1947-02-01 1954-06-01 Allegheny Ludlum Steel Wire-coursing die
US3965285A (en) * 1974-07-08 1976-06-22 Robert Dickson Hill Electrically conductive object having an ablative layer thereon for protecting the same from damage by an electrical discharge

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2450007A (en) * 1942-11-23 1948-09-28 Standard Telephones Cables Ltd Carburized filament and method for treating the same
US2679680A (en) * 1947-02-01 1954-06-01 Allegheny Ludlum Steel Wire-coursing die
US3965285A (en) * 1974-07-08 1976-06-22 Robert Dickson Hill Electrically conductive object having an ablative layer thereon for protecting the same from damage by an electrical discharge

Similar Documents

Publication Publication Date Title
US1847653A (en) Manufacture of resistance units
US716311A (en) Electrical conductor.
US1227346A (en) Method of making electrical conductors.
US1157344A (en) Means for preventing corona loss.
US2585037A (en) Insulated electrical conductor
US720335A (en) Means for measuring electric currents.
US1084721A (en) Shunt for measuring instruments.
US311174A (en) Electric cable
US3514524A (en) Transposed low temperature strip electric cable
US3337830A (en) Terminal-equipped substrates with electrically conductive surfaces thereon
US3356982A (en) Metal film resistor for low range and linear temperature coefficient
US3140460A (en) Tungsten resistance elements
US957193A (en) Process of preventing surface oxidation of resistance-conductors.
US1671469A (en) Electric resistance
US819650A (en) Electric heater.
US2927367A (en) Variable resistor
US3293582A (en) Electrical device and method of making thereof
US290971A (en) Electrical conductor
US3217094A (en) Polycarbonate cable
US1019075A (en) Electrical resistance.
US1939552A (en) Conducting wire
US1281716A (en) Process of making molded conductors.
US514258A (en) Temperature-compensating device
US691949A (en) Support for electric conductors and resistances.
US845463A (en) Slide-rule.