US248417A - Thomas a - Google Patents
Thomas a Download PDFInfo
- Publication number
- US248417A US248417A US248417DA US248417A US 248417 A US248417 A US 248417A US 248417D A US248417D A US 248417DA US 248417 A US248417 A US 248417A
- Authority
- US
- United States
- Prior art keywords
- block
- horseshoe
- carbons
- shape
- thomas
- 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 description 10
- 239000002023 wood Substances 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 238000003763 carbonization Methods 0.000 description 8
- 239000004020 conductor Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 150000001721 carbon Chemical class 0.000 description 2
- 238000010000 carbonizing Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
- H01K3/02—Manufacture of incandescent bodies
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- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49789—Obtaining plural product pieces from unitary workpiece
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Description
(No Model.)
T. A. EDISON.
MANUFACTURING CARBONS FOR E'LBOTRIO LIGHTS.
No. 248,417. Patented Oct. 18,1881.
he @umo n mm Wishmglun. o. c.
UNITED. STATES PATENT OFFICE.
THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY, ASSIGNOR TO THE EDISON ELECTRIC LIGHT COMPANY, OF NEW YORK, N. Y.
MANUFACTURING CARBONS FOR ELECTRIC LIGHTS.
SPECIFICATION forming part of Letters Patent No. 248,417, dated October 18, 1881. Application filed June 30, 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 NewJersey, have invented a new and useful Method of Manufacturing Oarbons 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.
This invention relates to the manufacture of carbons from wood for incandescing conductors in electric lamps.
As explained in previous applications by me made for patents for inventions relating to the same subject-matter, an incandescingconductor is needed which shall be exceedingly smallin fact, a mere filament in the light-givingportionbut with ends somewhat enlarged, so as to aflord a good connection for the clamps which are to support the carbons and connect them to the conductors. These incandescing conductors are made as part of an oval, and are ordinarilydesignated horseshoe carbons.
In the present invention a block of wood is' taken and cut in a machine or lathe for turning irregular forms until its shape is that of an elongated oval, of which about one-third, including an end, is out upon somewhat larger axes than the remainder, in order to provide for the clamps. The interior is then reamed out in a suitable machine, so that the block then resembles a series of carbon horseshoes with closed ends piled upon each other. The length of the ovalis with the grain ofthe wood. The block is then split or sawed into very thin layers or slips, each forming ultimately one horseshoe carbon. The slips are then carbonized, preferably in a nickel flask ofa description shown in a prior application. After carbonization the greater portion of the broader end of the slip is cutoff, leaving the horseshoe in shape for use. This broader end, which connects what are afterward the ends of the horseshoe, may, if desired, be out ofl'prior to carbonization; but as this broader connecting end tends to support and keep in shape the portion s afterward forming the horseshoe, it is better to leave it on until after carbonization. Eitherbeforeoraftercarbonization,(preferably before,) and before the slips are sawed or split. from the block, small holes are made in the broad end, through which pass the clampscrews.
In the drawings, Figure l is a perspective view of the block partially turned in proper shape. Fig. 2 is a front view ofa carbon after carbonization. Fig. 3 is aside view of a carbo properly secured in clamps.
A is a block of wood, which, in a proper ma- 6o chine, is turned so that its exterior shape is that of an oval, composed oftwo ovals, B O, of different axes, thereby forming a broadened portion for the clamps, the interior being reamed out to present a uniform smooth surface, F. This block, so shaped, is then split or sawed into very thin layers or slips of a thickness sufficientforone carbon horseshoe,as seen in Figs. 2 and 3. These slips are then carbonized and a portion of 0 broken or out off at 0 7o 0, as shown in dotted lines in Fig. 2.
Atsome stage in the process, preferably while in the shape shown inFig. 1, holes 61 d are drilled for the reception of the screws 0, which fasten the clamps D tothe carbon.
What I claim is- The method of forming carbons for the incandescing conductors oi'electriolights, consisting in cutting or turning a block of Wood into the shape of an oval having a broadened portion and reaming out the central portion of such oval, then slicing the block into layers, and then carbonizing the layers, a portion of the broadened part being removed before or after carbonizaiion, substantially as set forth.
This specification signed and witnessed this 15th day of June, 1880.
THOS. A. EDISON.
Witnesses S. L. GRIFFIN, WM. OARMAN.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US248417A true US248417A (en) | 1881-10-18 |
Family
ID=2317738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US248417D Expired - Lifetime US248417A (en) | Thomas a |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US248417A (en) |
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0
- US US248417D patent/US248417A/en not_active Expired - Lifetime
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