US2692205A - Carbonaceous cement - Google Patents

Carbonaceous cement Download PDF

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Publication number
US2692205A
US2692205A US317094A US31709452A US2692205A US 2692205 A US2692205 A US 2692205A US 317094 A US317094 A US 317094A US 31709452 A US31709452 A US 31709452A US 2692205 A US2692205 A US 2692205A
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United States
Prior art keywords
parts
cement
weight
electrode
binder
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Expired - Lifetime
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US317094A
Inventor
Clarence E Greider
Myron R Null
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Union Carbide Corp
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Union Carbide and Carbon Corp
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Priority to US317094A priority Critical patent/US2692205A/en
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Publication of US2692205A publication Critical patent/US2692205A/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
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/47—Molded joint
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7016—Diametric end slot is joint component

Definitions

  • This invention relates to a carbonaceous cement particularly suited for use in joining illuminating carbons.
  • Fig. 1 is an elevational view of portions of electrodes to be joined in accordance with the invention.
  • Fig. 2 is a view similar to Fig. 1 but partially in section showing a typical electrode joint embodying the invention.
  • the invention comprises a carbonaceous cement consisting of finely-divided carbon, an aqueous sugar solution as a binder, and an amine selected from the group consisting of monoethanolamine, diethanolamine and triethanolamine. More specifically the cement contains about 45 to 55 parts by weight each of carbon and binder and 5 to 15 parts by weight of amine.
  • a preferred binder is a solution containing about 75 parts by weight of glucose and 25 parts by weight of water.
  • a typical cement embodying the invention contains, by weight, 48 parts carbon flour, 52 parts binder and parts monoethanolamine.
  • the invention also comprises a sectional positive illuminating carbon electrode, the individual sections of which are joined and bonded together by the cement of the invention.
  • a sectional electrode illustrative of the invention may comprise an electrode section 10 having a conventional core ll of rare earths.
  • a recess [2 is provided at one end of the electrode section It.
  • a similar electrode section 13 is provided with a tongue M adapted to fit into the recess I2.
  • the electrode sections Ill, I3 are bonded together by a layer I5 of the cement of the invention with the tongue l4 inserted in the recess l2.
  • the cement of the invention for joining electrode sections, it is applied either to the recess of one section or the tongue of another section, or to both, and is allowed to dry.
  • another section may be added to it by inserting its tongue into the recess of the section already in use.
  • the heat from the arc conducted through the carbon causes the binder of the cement to coke (i. e. to become carbonized) and in coking to bond the two sections together.
  • a cement To be useful for joining electrode sections as described a cement must retain sufficient plasticity after it is applied to permit a good fit and must provide a strong bond so that the sections do not separate as the electrode is consumed in the arc.
  • the amine included in the cement of the invention is essential to the attainment of both of these characteristics.
  • a carbonaceous cement consisting of about 45 to parts by weight of finely-divided carbon; 45 to 55 parts by weight of an aqueous sugar solution as a binder; and 5 to 15 parts by weight of at least one compound selected from the group consisting of monoethanolamine, diethanolamine, and triethanolamine.
  • a carbonaceous cement consisting of about 45 to 55 parts by weight of finely-divided carbon; 45 to 55 parts by weight of an aqueous solution of glucose as a binder; and 5 to 15 parts by weight of at least one compound selected from the group consisting of monoethanolamine, diethanolamine, and triethanolamine.
  • a carbonaceous cement consisting of about 45 to 55 parts by weight of finely-divided carbon; 45 to 55 parts by weight of an aqueous solution of glucose as a binder; and 5 to 15 parts by weight of monoethanolamine.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Discharge Heating (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Description

h 1954 c. E. GREIDER ETAL CARBONACEOUS' CEMENT Filed Oct. 27, 1952 Cement INVENTORS CLARENCE E. GREIDER MYRON R.NULL
Patented Oct. 19, 1954 CARBONAOEOUS CEMENT Clarence E. Greider, Lakewood, and Myron R. Null, Berea, Ohio, assignors to Union Carbide and Carbon Corporation, a corporation of New York Application October 27, 1952, Serial No. 317,094
3 Claims.
This invention relates to a carbonaceous cement particularly suited for use in joining illuminating carbons.
Recent developments in arc lamps for motion picture projection, searchlights, and the like have increased the consumption rate of the positive electrode to such an extent that the time of continuous operation is substantially reduced. At the same time there is a growing demand for longer periods of continuous operation of such devices. Due to the construction of lamps and electrode feeding devices it is impractical to lengthen the positive electrodes suificiently to provide the desired increased life. Accordingly, there is a demand for some means of connecting a new electrode to a partially consumed electrode to provide continuous operation.
It is the principal object of this invention to satisfy this demand, and another important object of the invention is a carbonaceous cement, particularly suited for use in joining illuminating carbon electrodes.
In the drawing, Fig. 1 is an elevational view of portions of electrodes to be joined in accordance with the invention; and
Fig. 2 is a view similar to Fig. 1 but partially in section showing a typical electrode joint embodying the invention.
The invention comprises a carbonaceous cement consisting of finely-divided carbon, an aqueous sugar solution as a binder, and an amine selected from the group consisting of monoethanolamine, diethanolamine and triethanolamine. More specifically the cement contains about 45 to 55 parts by weight each of carbon and binder and 5 to 15 parts by weight of amine. A preferred binder is a solution containing about 75 parts by weight of glucose and 25 parts by weight of water. A typical cement embodying the invention contains, by weight, 48 parts carbon flour, 52 parts binder and parts monoethanolamine.
The invention also comprises a sectional positive illuminating carbon electrode, the individual sections of which are joined and bonded together by the cement of the invention. Referring to the drawing, a sectional electrode illustrative of the invention may comprise an electrode section 10 having a conventional core ll of rare earths. A recess [2 is provided at one end of the electrode section It. A similar electrode section 13 is provided with a tongue M adapted to fit into the recess I2. In accordance with the invention, the electrode sections Ill, I3 are bonded together by a layer I5 of the cement of the invention with the tongue l4 inserted in the recess l2.
In using the cement of the invention for joining electrode sections, it is applied either to the recess of one section or the tongue of another section, or to both, and is allowed to dry. As a section is consumed during use in an arc lamp, another section may be added to it by inserting its tongue into the recess of the section already in use. As the joint approaches the jaws holding the electrode, the heat from the arc conducted through the carbon causes the binder of the cement to coke (i. e. to become carbonized) and in coking to bond the two sections together.
To be useful for joining electrode sections as described a cement must retain sufficient plasticity after it is applied to permit a good fit and must provide a strong bond so that the sections do not separate as the electrode is consumed in the arc. The amine included in the cement of the invention is essential to the attainment of both of these characteristics.
What is claimed is:
1. A carbonaceous cement consisting of about 45 to parts by weight of finely-divided carbon; 45 to 55 parts by weight of an aqueous sugar solution as a binder; and 5 to 15 parts by weight of at least one compound selected from the group consisting of monoethanolamine, diethanolamine, and triethanolamine.
2. A carbonaceous cement consisting of about 45 to 55 parts by weight of finely-divided carbon; 45 to 55 parts by weight of an aqueous solution of glucose as a binder; and 5 to 15 parts by weight of at least one compound selected from the group consisting of monoethanolamine, diethanolamine, and triethanolamine.
3. A carbonaceous cement consisting of about 45 to 55 parts by weight of finely-divided carbon; 45 to 55 parts by weight of an aqueous solution of glucose as a binder; and 5 to 15 parts by weight of monoethanolamine.
Name Date Beckwith Dec. 25, 1883 Number

Claims (1)

1. A CARBONACEOUS CEMENT CONSISTING OF ABOUT 45 TO 55 PARTS BY WEIGHT OF FINELY-DIVIDED CARBON; 45 TO 55 PARTS BY WEIGHT OF AN AQUEOUS SUGAR SOLUTION AS A BINDER; AND 5 TO 15 PARTS BY WEIGHT OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF MONOETHANOLAMINE, DIETHANOLAMINE, AND TRIETHANOLAMINE.
US317094A 1952-10-27 1952-10-27 Carbonaceous cement Expired - Lifetime US2692205A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2875549A (en) * 1956-07-03 1959-03-03 Martin H O'sullivan Fishing lure
US3577105A (en) * 1969-05-29 1971-05-04 Us Army Method and apparatus for joining plated dielectric-form waveguide components
US4116575A (en) * 1976-07-20 1978-09-26 Alps Electric Co., Ltd. Encapsulated reinforcement in moulded shaft
US4575856A (en) * 1984-05-18 1986-03-11 Pennsylvania Engineering Corporation Iron free self baking electrode
US4729689A (en) * 1984-12-13 1988-03-08 Union Carbide Corporation Electrode member and process for the production thereof
US6203238B1 (en) * 1997-08-30 2001-03-20 Luk Automobiltechnik Gmbh & Co., Kg Shaft coupling with axial alignment
US6214158B1 (en) * 1999-02-26 2001-04-10 Ucar Carbon Company Inc. High temperature carbonaceous cement
US8167369B2 (en) * 2010-04-02 2012-05-01 Foming Bicycle Parts Co., Ltd. Cushion structure for bicycle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US290836A (en) * 1883-12-25 Carbon

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US290836A (en) * 1883-12-25 Carbon

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2875549A (en) * 1956-07-03 1959-03-03 Martin H O'sullivan Fishing lure
US3577105A (en) * 1969-05-29 1971-05-04 Us Army Method and apparatus for joining plated dielectric-form waveguide components
US4116575A (en) * 1976-07-20 1978-09-26 Alps Electric Co., Ltd. Encapsulated reinforcement in moulded shaft
US4575856A (en) * 1984-05-18 1986-03-11 Pennsylvania Engineering Corporation Iron free self baking electrode
US4729689A (en) * 1984-12-13 1988-03-08 Union Carbide Corporation Electrode member and process for the production thereof
US6203238B1 (en) * 1997-08-30 2001-03-20 Luk Automobiltechnik Gmbh & Co., Kg Shaft coupling with axial alignment
US6214158B1 (en) * 1999-02-26 2001-04-10 Ucar Carbon Company Inc. High temperature carbonaceous cement
US8167369B2 (en) * 2010-04-02 2012-05-01 Foming Bicycle Parts Co., Ltd. Cushion structure for bicycle

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