US272017A - Carbon electrode for electric lamps - Google Patents
Carbon electrode for electric lamps Download PDFInfo
- Publication number
- US272017A US272017A US272017DA US272017A US 272017 A US272017 A US 272017A US 272017D A US272017D A US 272017DA US 272017 A US272017 A US 272017A
- Authority
- US
- United States
- Prior art keywords
- carbon
- electric lamps
- carbon electrode
- clay
- electric
- 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
Links
- 229910052799 carbon Inorganic materials 0.000 title description 34
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title description 32
- 239000004927 clay Substances 0.000 description 14
- 229910052570 clay Inorganic materials 0.000 description 14
- 239000011521 glass Substances 0.000 description 12
- 241000209456 Plumbago Species 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 239000010439 graphite Substances 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 230000000717 retained Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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
- Y10T428/29—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
- Electrodes of carbon in lamps are consumed with rapidity and require to be replaced.
- the rapidity of consumption arises considerably from the'particles of carbon that break ofi' under the action of the electric arc and fall away. These are a loss and also form a deposit in the lower part of the globe or shade around the lamp.
- Theohject of my invention is to render the carbon electrodes more durable by surrounding them with a refractory compound that is not consumed as rapidly as the carbon itself. Hence the coating will form a cup around the lower electrode to confine the particles of car bon and render said electrodes more durable,
- the coating material is made by grinding together old plumbago crucibles or pots, about eighty parts, with about fifteen parts of clay and five parts of glass. These are thoroughly pulverized and mixed and rendered semi-liquid and of about the ordinary consistency of paint by the addition of water or other liquid. After the carbon has been-dipped or otherwise coated with this compound it is allowed to dry and is ready for use. It may be covered with a deposit of copper, if desired.
- the plumbago By the use of refractory material containing plumbago, clay, and glass, or materials having equivalent properties, the plumbago becomes The clay and glass act togetherthe clay to prevent the glass running down the electrode, and the glass to form a vitreous covering over the clay to prevent the action of atmosphere on the clay and carbon, causing the former to boil and the carbon to be liberated and consumed, thereby rendering the carbon very durable and forming a slight cup shape, for the purposes set forth.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Surface Treatment Of Glass (AREA)
- Carbon And Carbon Compounds (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
Patented Feb. 13, 1883.
m mam;
(No Model.) v.
J. E. ATWOOD;
CARBON ELEGTRODE POR ELECTRIC LAMPS. No; 272,017.
fit 26444134 Mwiw UNITED STATES PATENT OFFICE.
JAMES E. ATWOOD, OF TROY, NEW YORK, ASSIGNOR TO THEODORE MACE,
OF PLAINFIELD, NEW JERSEY.
CARBON ELECTRODE FOR ELECTRIC LAMPS.
SPECIFICATION forming part of Letters Patent No. 272,017, dated February 13, 1883.
Application filed June 19, 1882. (No model.) 1
To all whom it may concern Be it known that I, JAMES E. A'rwoon, of Troy, in the county of Rensselaer and State of New York, have invented an Improvement in Carbon Electrodes for Electric Lamps, of which the following is a specification.
Electrodes of carbon in lamps are consumed with rapidity and require to be replaced. The rapidity of consumption arises considerably from the'particles of carbon that break ofi' under the action of the electric arc and fall away. These are a loss and also form a deposit in the lower part of the globe or shade around the lamp.
Theohject of my invention is to render the carbon electrodes more durable by surrounding them witha refractory compound that is not consumed as rapidly as the carbon itself. Hence the coating will form a cup around the lower electrode to confine the particles of car bon and render said electrodes more durable,
In the drawing I have represented by a sectional view the two carbonelectrodes as they appear in use.
1 take the ordinary gas-carbon electrode for a lamp and dip it into a compound of the following material to form a coating around the whole or almost all of the length of the said carbon.
The coating material is made by grinding together old plumbago crucibles or pots, about eighty parts, with about fifteen parts of clay and five parts of glass. These are thoroughly pulverized and mixed and rendered semi-liquid and of about the ordinary consistency of paint by the addition of water or other liquid. After the carbon has been-dipped or otherwise coated with this compound it is allowed to dry and is ready for use. It may be covered with a deposit of copper, if desired.
the conducting material.
electric are are retained and the carbon rendered more durable, and the deposit of carbon on the globe or shade is lessened.
I am aware that metals have been used as a coating for electric-lamp carbons; but the same are not of a refractory nature and do not form a cup around the lower carbon to render the carbon more durable.
By the use of refractory material containing plumbago, clay, and glass, or materials having equivalent properties, the plumbago becomes The clay and glass act togetherthe clay to prevent the glass running down the electrode, and the glass to form a vitreous covering over the clay to prevent the action of atmosphere on the clay and carbon, causing the former to boil and the carbon to be liberated and consumed, thereby rendering the carbon very durable and forming a slight cup shape, for the purposes set forth.
I claim as my invention- The electric-lamp carbons coated with plumbago, clay, and glass, substantially as and for the purposes set forth.
Signed by me this 3d day of June, A. D. 1882.
JAMES E. ATWOOD.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US272017A true US272017A (en) | 1883-02-13 |
Family
ID=2341250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US272017D Expired - Lifetime US272017A (en) | Carbon electrode for electric lamps |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US272017A (en) |
-
0
- US US272017D patent/US272017A/en not_active Expired - Lifetime
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