US251540A - Thomas a - Google Patents
Thomas a Download PDFInfo
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- US251540A US251540A US251540DA US251540A US 251540 A US251540 A US 251540A US 251540D A US251540D A US 251540DA US 251540 A US251540 A US 251540A
- Authority
- US
- United States
- Prior art keywords
- carbon
- thomas
- finished
- carbonization
- edison
- Prior art date
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 22
- 229910052799 carbon Inorganic materials 0.000 description 22
- 239000000835 fiber Substances 0.000 description 12
- 238000003763 carbonization Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 241000209134 Arundinaria Species 0.000 description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 6
- 235000017491 Bambusa tulda Nutrition 0.000 description 6
- 241001330002 Bambuseae Species 0.000 description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 6
- 239000011425 bamboo Substances 0.000 description 6
- 239000004020 conductor Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 241000092161 Pithys Species 0.000 description 2
- 238000010000 carbonizing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
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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
- 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
- C04B35/528—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 obtained from carbonaceous particles with or without other non-organic components
- C04B35/532—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 obtained from carbonaceous particles with or without other non-organic components containing a carbonisable binder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
Definitions
- incandescent electric lighting I prefer to use for the incandescing conductorasmall slip or filament of carbon bent into a curve, now generally designated the horseshoe carbon.
- the horseshoe carbon Great success has attended the use of such carbons made from a naturally fibrous material capable of carbonization-for instance, wood formed into proper shape and then carbonized. I have found, however, that thebest results are attained with the use of those materials which are fibrous, and wherei n the fibers making up the mass of material lie naturally parallel, so that the individual fibers extend from end to end, increasing its strength and obviating danger of breakage from cross or 0blique grain.
- the carbons should be of uniform size throughout the portion that is rendered incandescent, in order that radiatingsurface and resistance be regularand uniform, insuring even heating and incandescence.
- the object of this invention is to produce-asmall slip or filament for the carbon having parallel fibers and of uniform size; and to this end it consists in a carbon made of the materials and in the way more particularly hereinafter described and claimed.
- the cane bamboo is cntinto strips, from which the hard glossyor silicious exterior and the pithy interior have been before removed, or from which they are now removed. Each strip is then out or shaved by proper devices or machinery until its body, or part intended for ligl1t-giving,is reduced to the desired form and size, the ends being formed into enlargements, afiording a good bearing or surface for uniting the finished carbons to metallic conductors.
- these enlarge ments of the ends be formed entirely upon side of the finished slip which forms the blank for carbonization, instead ofupon both sides.
- This construction enables the blank, when placed on edge in the carbonizer, to more readily move therein as itis contracted in the process ofcarbonization.
- the finished carbon being smaller than the blank, allowance is to be made therefor in preparing the blanks, and they should be made proportionately larger than the size desired for the finished carbon.
- One or a number of blanks thus prepared are then placed in a suitable carbonizing oven or flask and thoroughly carbonized.
- Figure 1 represents a blank made from cane bamboo, ready for carbonization, having enlarged or clamping ends 8 3 formed on one edge only, while in these enlarged or clamping ends are theslots 0' i, by which the slips may be secured in the carbonizer, and which also mayform the holes through which pass the screws or clamps, ifclamps be used for securing the finished carbon to leading-in wires.
- Fig. 2 shows in perspective a finished carbon made from the blankshown in Fig.
- An incandescing carbon conductor for electric lights made from cane bamboo or sim ilar fiber, substantially as set forth.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Ceramic Engineering (AREA)
- Nanotechnology (AREA)
- Composite Materials (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Fibers (AREA)
Description
(No Model.)
A. EDISON.
CARBON FOR ELECTRIC LAMPS. No. 251,540. Patented Dec. 27,1881.
. $4 .1. ,1 1:.- I Q 4 s WITNESSES: INVENTOR:'
ATTORNEYS.
N. FEIERS. Plmwmho ra lm. Wildlininn, D. C.
UNITED STATES PATENT OFFICE.
THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY, ASSIGNOR TO THE EDISON ELECTRIC LIGHT COMPANY, OF NET V YORK, N. Y.
CARBON FOR ELECTRIC LAMPS.
SPECIFICATION forming part of Letters Patent No. 251,540, dated December 2'7, 1881. Application filed August 6, 1880. (No model.)
To all whom it may concern:
Be it known that I, THOMAS A. EDISON, of Menlo Park, in the county of Middlesex and State of New Jersey, have invented a new and useful Improvement in Garbons for Electric Lamps; and I do hereby declare that the following is a full and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.
In incandescent electric lighting I prefer to use for the incandescing conductorasmall slip or filament of carbon bent into a curve, now generally designated the horseshoe carbon. Great success has attended the use of such carbons made from a naturally fibrous material capable of carbonization-for instance, wood formed into proper shape and then carbonized. I have found, however, that thebest results are attained with the use of those materials which are fibrous, and wherei n the fibers making up the mass of material lie naturally parallel, so that the individual fibers extend from end to end, increasing its strength and obviating danger of breakage from cross or 0blique grain.
To produce the best results in giving light it is essential that the carbons should be of uniform size throughout the portion that is rendered incandescent, in order that radiatingsurface and resistance be regularand uniform, insuring even heating and incandescence.
The object of this invention, therefore, is to produce-asmall slip or filament for the carbon having parallel fibers and of uniform size; and to this end it consists in a carbon made of the materials and in the way more particularly hereinafter described and claimed.
I have found that for the purposes of the carbon filamenteane bamboois eminentlysuited, it having long parallel fibers, and with a minimum of cementingor other foreign matters. The cane bamboo is cntinto strips, from which the hard glossyor silicious exterior and the pithy interior have been before removed, or from which they are now removed. Each strip is then out or shaved by proper devices or machinery until its body, or part intended for ligl1t-giving,is reduced to the desired form and size, the ends being formed into enlargements, afiording a good bearing or surface for uniting the finished carbons to metallic conductors. It is preferable that these enlarge ments of the ends be formed entirely upon side of the finished slip which forms the blank for carbonization, instead ofupon both sides. This construction enables the blank, when placed on edge in the carbonizer, to more readily move therein as itis contracted in the process ofcarbonization. As the material shrinks in the process of carbonization, the finished carbon being smaller than the blank, allowance is to be made therefor in preparing the blanks, and they should be made proportionately larger than the size desired for the finished carbon. One or a number of blanks thus prepared are then placed in a suitable carbonizing oven or flask and thoroughly carbonized.
In the drawings, Figure 1 represents a blank made from cane bamboo, ready for carbonization, having enlarged or clamping ends 8 3 formed on one edge only, while in these enlarged or clamping ends are theslots 0' i, by which the slips may be secured in the carbonizer, and which also mayform the holes through which pass the screws or clamps, ifclamps be used for securing the finished carbon to leading-in wires. Fig. 2 shows in perspective a finished carbon made from the blankshown in Fig.
What I claim is- 1. A slip or filament'for forming on carbonization the inoandescing conductor of an electric light, made ofbamboo or similar fiber, substantially as set forth.
2. An incandescing carbon conductor for electric lights, made from cane bamboo or sim ilar fiber, substantially as set forth.
This specification signed and witnessed this 28th day of July, 1880.
THOS. A. EDISON. Witnesses:
CHAS. BATCHELOR, G. E. GOURAND.
Publications (1)
Publication Number | Publication Date |
---|---|
US251540A true US251540A (en) | 1881-12-27 |
Family
ID=2320839
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US251540D Expired - Lifetime US251540A (en) | Thomas a |
Country Status (1)
Country | Link |
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US (1) | US251540A (en) |
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0
- US US251540D patent/US251540A/en not_active Expired - Lifetime
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