GB667720A - Improvements in the methods of manufacture of electrical resistors - Google Patents
Improvements in the methods of manufacture of electrical resistorsInfo
- Publication number
- GB667720A GB667720A GB698550A GB698550A GB667720A GB 667720 A GB667720 A GB 667720A GB 698550 A GB698550 A GB 698550A GB 698550 A GB698550 A GB 698550A GB 667720 A GB667720 A GB 667720A
- Authority
- GB
- United Kingdom
- Prior art keywords
- furnace
- cylinder
- gas
- refractory tube
- tube
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 238000000354 decomposition reaction Methods 0.000 abstract 2
- 239000007789 gas Substances 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 239000004215 Carbon black (E152) Substances 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 125000001183 hydrocarbyl group Chemical group 0.000 abstract 1
- 239000011261 inert gas Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Furnace Details (AREA)
Abstract
667,720. Resistance coatings and deposits. WELWYN ELECTRICAL LABORATORIES, Ltd. March 21, 1950, No. 6985/50. Class 37. Carbon is deposited on insulating bodies, such as ceramic or vitreous material in the form of rods, tubes, or plaques, by the decomposition of hydrocarbon gas at high temperature, the bodies being placed in a gas-tight container which is heated in a furnace to and maintained at the required temperature until the decomposition has proceeded to the required stage, and the container being then separated from the furnace so that it may be rapidly cooled. As shown in.Fig. 1, a furnace consists of a frame 1 in which is mounted a refractory tube 2 on which the winding 3 is placed. The furnace rests on a frame 4. The ends of the refractory tube 2 are open to the atmosphere and adjacent to the ends are two supports 5 mounted on brackets 6. The supports 5 may be in the form of a semi-circular cradle or may comprise an arrangement of rollers. In the refractory tube 2 is placed a furnace cylinder 7 made from high temperature alloy, closed at one end. 8 and provided with a flange 9 at the other end. A plate 10 is bolted to the flange 9 with the interposition of a gasket. Attached to the plate 10 is a handle 12 for inserting or withdrawing the cylinder 7 from the furnace and which can serve as a means of entry to the cylinder for entry of inert gas or vapour, withdrawal of products of reaction, or for producing a vacuum. The ends of the cylinder may be water-cooled. Alternatively the cylinder 7 may be fixed and the furnace mounted on a trolley so that.it can be wheeled away from the furnace tube. The cylinder 7 is withdrawn from the furnace at a temperature greater than 200‹ C. A gas furnace may alternatively be used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB698550A GB667720A (en) | 1950-03-21 | 1950-03-21 | Improvements in the methods of manufacture of electrical resistors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB698550A GB667720A (en) | 1950-03-21 | 1950-03-21 | Improvements in the methods of manufacture of electrical resistors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB667720A true GB667720A (en) | 1952-03-05 |
Family
ID=9824450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB698550A Expired GB667720A (en) | 1950-03-21 | 1950-03-21 | Improvements in the methods of manufacture of electrical resistors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB667720A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1031875B (en) * | 1956-02-07 | 1958-06-12 | Kurt Sachs Dr | Process for the production of carbon film resistors |
| CN107170542A (en) * | 2017-06-27 | 2017-09-15 | 应城和天电子科技有限公司 | A kind of carbide furnace |
-
1950
- 1950-03-21 GB GB698550A patent/GB667720A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1031875B (en) * | 1956-02-07 | 1958-06-12 | Kurt Sachs Dr | Process for the production of carbon film resistors |
| CN107170542A (en) * | 2017-06-27 | 2017-09-15 | 应城和天电子科技有限公司 | A kind of carbide furnace |
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