US991841A - Resistance compound. - Google Patents

Resistance compound. Download PDF

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Publication number
US991841A
US991841A US58559510A US1910585595A US991841A US 991841 A US991841 A US 991841A US 58559510 A US58559510 A US 58559510A US 1910585595 A US1910585595 A US 1910585595A US 991841 A US991841 A US 991841A
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US
United States
Prior art keywords
mica
lamp black
bone ash
flour
resistance compound
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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US58559510A
Inventor
William E Gardner
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Individual
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Individual
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Publication date
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Priority to US58559510A priority Critical patent/US991841A/en
Application granted granted Critical
Publication of US991841A publication Critical patent/US991841A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20—Conductive material dispersed in non-conductive organic material
    • H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
    • 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite

Definitions

  • Thecompound consists of the following ingredients: lamp black, bone ash, andflour of mica.
  • the lamp black commonly termed soot, is of itself a good conductor of electric current, while bone ash is considered as practically a non-conductor, and flour of mica as an absolute non-conductor.
  • the lamp black and bone ash are to be p eferred, without the addition of the flour of mica, or the flour of mica substituted for the bone ash.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Insulating Materials (AREA)

Description

WILLIAM E. GARDNER, OF PITTSBURG, PENNSYLVANIA RESISTANCE coairouma.
No Drawing.
, to the passage of an electric current therethrough, as well as be )ractically indestruc tible by the heating e ect of the current. Thecompound consists of the following ingredients: lamp black, bone ash, andflour of mica. The lamp black, commonly termed soot, is of itself a good conductor of electric current, while bone ash is considered as practically a non-conductor, and flour of mica as an absolute non-conductor.
\Vhen thoroughly mixed, the conductivity of the compound, or the resistance ofl'ered thereby to the passage of an electric current, will depend upon the proportion of'one element to the other, or others, which proportions will depend upon the circumstance under which it is employed.
Specification of Letters Patent. Application filed. October 6,1910. Serial Ii'o. 585,595.
Patented May 9,1911.
6 For most purposes, the lamp black and bone ash are to be p eferred, without the addition of the flour of mica, or the flour of mica substituted for the bone ash.
All of the ingredients of the compound being practically infusible will permit of its being raised to a very high degree of temperature, by an electric current, particularly where it be desired to employ the same for heating purposes, when properly proportioned.
I claim: l. The herein described compound, containing lamp black, and bone ash, for the purpose set forth.
2. The herein described compound, conthe purpose set forth.
3. The herein described compound, consisting of lamp black, bone ash, and flour of mica, for the purpose set forth.
In testimony whereof, I afiix my signature, in presence of two itnesses.
WILLIAM E. GARDNER.
taining lamp black. and flour of mica, for
\Vitnesses:
D. B. OAKS, R. S. HARRISON.
US58559510A 1910-10-06 1910-10-06 Resistance compound. Expired - Lifetime US991841A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US58559510A US991841A (en) 1910-10-06 1910-10-06 Resistance compound.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US58559510A US991841A (en) 1910-10-06 1910-10-06 Resistance compound.

Publications (1)

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US991841A true US991841A (en) 1911-05-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
US58559510A Expired - Lifetime US991841A (en) 1910-10-06 1910-10-06 Resistance compound.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2472533A (en) * 1945-12-06 1949-06-07 Moses D Heyman Mica base heating sheet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2472533A (en) * 1945-12-06 1949-06-07 Moses D Heyman Mica base heating sheet

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