US829464A - Carbon product and method of making same. - Google Patents

Carbon product and method of making same. Download PDF

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Publication number
US829464A
US829464A US28539805A US1905285398A US829464A US 829464 A US829464 A US 829464A US 28539805 A US28539805 A US 28539805A US 1905285398 A US1905285398 A US 1905285398A US 829464 A US829464 A US 829464A
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United States
Prior art keywords
carbon
making same
carbon product
reduced
making
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Expired - Lifetime
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US28539805A
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Winslow P Eayrs
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.)
MICHAEL R PERKINS
HOWE CALL
Original Assignee
HOWE CALL
MICHAEL R PERKINS
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Application filed by HOWE CALL, MICHAEL R PERKINS filed Critical HOWE CALL
Priority to US28539805A priority Critical patent/US829464A/en
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Publication of US829464A publication Critical patent/US829464A/en
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    • 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
    • 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

Definitions

  • My invention relates to such carbon prod ucts as brushes and contacts adapted for elec- IO trical purposes. It aims to provide an effective composition for and method of making and producing therefrom the desired articles.
  • My improved composition consists of finely-reduced carbon freed from gritty or vitreous constituents which may be present in the crude element and with which is mixed 2o reduced soapstone similarly separated and some such binder or adhesive solution as ricewater.
  • the proportions of the first two ingredients are such as to give the desired conductivity and freedom from friction, the lat- 2 5 ter being most essential if the composition is to be used for brushes contacting with the commutators of electrical apparatus and in similar connections.
  • a sufficient amount of rice-water is added to secure a paste of the proper consistency for molding.
  • the brush A-reqmres it, it ma be'coate in whole or in part, as is indicate at a, by plating with copper by electrodeposition.
  • the covering adheres firmly to the article and insures perfect contact between it and its holder.
  • claim- 1 The method of making articles of carbon, which consists in pulverizing the carbon, subjecting it to the action of a fluid current to separate the lighter portion, mixing this lighter portion with rice-water, and molding the mixture into the desired form.
  • composition consisting of reduced carbon and soapstone.
  • composition consisting of reduced carbon and rice-Water.
  • composition consisting of reduced carbon, soapstone, and rice-water.

Description

No. 829,464. PATENTED AUG. 28, 190 w. P. HAYES. CARBON PRODUCT AND METHOD OF MAKING SAME.
APPLICATION FILED HOV. 1.1905.
w imses. Inventor 545M 3 WW1 UNITED STATES PATENT OFFICE.
WINSLOW P. EAYRS, OF HUDSON, NEW HAMPSHIRE, ASSIGNOR OF ONE- THIRD TO MICHAEL R. PERKINS AND ONE'THIRD TO HOWE CALL, OF PORTSMOUTH, NEW HAMPSHIRE.
Specification of Letters Patent.
Patented Aug. 28, 1906.
Application filed November 1,1905. Serial No. 286,398.
To all whom it may concern.-
Be it known that I, WINSLOW P. EAYRS, of Hudson, in the county of Hillsboro and State of N ew Hampshire, have invented oer 5 tain new and useful Improvements in Carbon Products and Methods of Making the Same, of which the following is a specification.
My invention relates to such carbon prod ucts as brushes and contacts adapted for elec- IO trical purposes. It aims to provide an effective composition for and method of making and producing therefrom the desired articles.
The drawing illustrates a brush made in accordance with my invention.
My improved composition consists of finely-reduced carbon freed from gritty or vitreous constituents which may be present in the crude element and with which is mixed 2o reduced soapstone similarly separated and some such binder or adhesive solution as ricewater. The proportions of the first two ingredients are such as to give the desired conductivity and freedom from friction, the lat- 2 5 ter being most essential if the composition is to be used for brushes contacting with the commutators of electrical apparatus and in similar connections. A sufficient amount of rice-water is added to secure a paste of the proper consistency for molding.
In making articles from this com ositionI first deliver the crude carbon to a pu verizingmachine of any suitable type, but referably to one in which the material is su jected to the action of a gaseous fluidfor example, a
current of air created by the pulverizing agencies. As the carbon is reduced the finer purer portion rises by virtue of its lesser grav- 1ty and settles outside the pulverizing-recepo tacle on a suitable surface from which it may be readily collected. The coarser heavier impurities remain in the pulverizer for removal when desired. Soa stone is similarly reduced and separated and the finer portion mixed with an amount ofcarbon and the ricewater, determined-, as previously stated, to furnish a pastem This is then molded or pressed in the customary way.
When the article producedfor exam lo, the brush A-reqmres it, it ma be'coate in whole or in part, as is indicate at a, by plating with copper by electrodeposition. The covering thus formed adheres firmly to the article and insures perfect contact between it and its holder.
By my improved process aproduct is secured at a minimum cost which is free from abrasive particles, which operates smoothly under frictional contact, and which is dense and resistive of fracture.
Having thus explained the nature of my invention, claim- 1. The method of making articles of carbon, which consists in pulverizing the carbon, subjecting it to the action of a fluid current to separate the lighter portion, mixing this lighter portion with rice-water, and molding the mixture into the desired form.
2. The method of making articles of carbon, which consists in pulverizing the carbon and soapstone, subjecting each to the action of a fluid current to separate the lighter portions, mixing said lighter portions with an adhesive, and molding the mixture into the desired form.
3. The method of Inakin articles of carbon, which consists in pu verizing carbon and soapstone, subjecting each to the action of a fluid current to separate the lighter portions, mixing said lighter portions with ricewater, and molding the mlxture into the desired form.
4. The herein-described composition, consisting of reduced carbon and soapstone.
5. The herein-described composition, consisting of reduced carbon and rice-Water.
6. The herein-described composition, consisting of reduced carbon, soapstone, and rice-water. i
In testimonywhereof I have affixed my signature in presence of two .witnesses.
WINSLOW P. EAYRS.
US28539805A 1905-11-01 1905-11-01 Carbon product and method of making same. Expired - Lifetime US829464A (en)

Priority Applications (1)

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US28539805A US829464A (en) 1905-11-01 1905-11-01 Carbon product and method of making same.

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US28539805A US829464A (en) 1905-11-01 1905-11-01 Carbon product and method of making same.

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