US577499A - Las- willan - Google Patents

Las- willan Download PDF

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Publication number
US577499A
US577499A US577499DA US577499A US 577499 A US577499 A US 577499A US 577499D A US577499D A US 577499DA US 577499 A US577499 A US 577499A
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US
United States
Prior art keywords
willan
las
filaments
welkins
hadden
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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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00—Chemical modification by after-treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C08L23/0869—Acids or derivatives thereof
    • 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
    • Y10T428/2916—Rod, strand, filament or fiber including boron or compound thereof [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]
    • 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

  • This invention relates to a method of treating or flashing carbon or compound filaments whereby they are rendered capable of being worked at high temperatures without the rapid disintegration which would obtain in the case of filaments treated With hydrocarbons alone.

Description

UNITED STATES- PATENT OFFIC JOHN HADDEN DOUGLAS-WILLAN AND FRANK EUSTAOE WELKINS BOWEN,
I OF LONDON, ENGLAND.
FILAMENT FOR ELECTRIC LAMPS.
SPECIFICATION forming part of Letters Patent No. 577,499, dated February 23, 1897. Application filed August 3, 1896. Serial No. 601,532. (No specimens.)
To all whom it may concern.-
Be it known that we, JOHN HADDEN DOUG- LAS-WILLAN, residing at 16 St. Helens Place, and FRANK EUSTACE WELKINS BOWEN, of Selwood, Mount Avenue, Ealing, London, England, subjects of the Queen of Great Brit ain, have invented certain new and useful Improvements in Processes of Making Filaments for Electric Lamps, of which the following is a specification.
This invention relates to a method of treating or flashing carbon or compound filaments whereby they are rendered capable of being worked at high temperatures without the rapid disintegration which would obtain in the case of filaments treated With hydrocarbons alone. In order to effect this, we
Among such compounds suitable for the purpose we may mention the borates of the alcoholssuch as B(OOH and (O H BO In order to lower the vaporizing-point of these substances, we preferably add from one to two per cent. of ethyl iodid.
What we claim is 1. The process of treating filaments consist-
US577499D Las- willan Expired - Lifetime US577499A (en)

Publications (1)

Publication Number Publication Date
US577499A true US577499A (en) 1897-02-23

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ID=2646189

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US577499D Expired - Lifetime US577499A (en) Las- willan

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2819989A (en) * 1956-06-26 1958-01-14 Stackpole Carbon Co Dynamoelectric brush

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2819989A (en) * 1956-06-26 1958-01-14 Stackpole Carbon Co Dynamoelectric brush

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