US1430266A - Process for producing electrical insulating objects - Google Patents
Process for producing electrical insulating objects Download PDFInfo
- Publication number
- US1430266A US1430266A US454930A US45493021A US1430266A US 1430266 A US1430266 A US 1430266A US 454930 A US454930 A US 454930A US 45493021 A US45493021 A US 45493021A US 1430266 A US1430266 A US 1430266A
- Authority
- US
- United States
- Prior art keywords
- electrical insulating
- producing electrical
- slate
- objects
- insulating objects
- 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
- 238000000034 method Methods 0.000 title description 8
- 239000010454 slate Substances 0.000 description 12
- 238000005266 casting Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000012212 insulator Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
Definitions
- This invention relates to improvements in a process for producing electrical insulating objects.
- the object of. the present invention is a objects of slate.
- Slate has already been used for manufacturing electrical insulators in its natural state in the shape of slabs or by forming objects of a material composed of ground slate and an admixture of a binding material and treating them bya pressing operation. Such insulators are only suited for low tension. An addition of asbestos increases the insulating power only sli htly.
- electrical insulating objects are produced by melting natural slate, casting it into moulds and cooling it slowly.
- the objects produced in this manner are of-a jet black colour and of a very compact vitreous structure. -They show the surprising feature that they are able to resist very high tensions like the best insulators made of porcelain.
- Refractory slates may be treated advantageously by adding fluxes such as soda, potash and the like in order to improve the economy of the'process.
- a process for producing electrical in-. sulating objects consisting of melting natural slate, casting said slate into moulds and cooling the molten mass slowly.
- a process for producing electrical insulating objects consistin of grinding finely natural slate, melting sai slate, casting the molten mass into moulds and cooling it slowly.
- a process for producing electrical insulating objects consisting of meltin natural slate to ether with additions o fluxes, casting said slate into moulds and
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Insulating Bodies (AREA)
Description
process for producing electrical insulating Patented Sept fi, 12922.
UNHTED STATES intense PATENT @FFHQE.
AUGUS'I SIDLER, 0F ZURICH, SWITZERLAND.
3T0 Drawing.
trical Insulating Objects; and I do hereby declare the following to be a clear, full, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
This invention relates to improvements in a process for producing electrical insulating objects.
The object of. the present invention is a objects of slate. Slate has already been used for manufacturing electrical insulators in its natural state in the shape of slabs or by forming objects of a material composed of ground slate and an admixture of a binding material and treating them bya pressing operation. Such insulators are only suited for low tension. An addition of asbestos increases the insulating power only sli htly.
ccording to the present invention electrical insulating objects are produced by melting natural slate, casting it into moulds and cooling it slowly.
The objects produced in this manner are of-a jet black colour and of a very compact vitreous structure. -They show the surprising feature that they are able to resist very high tensions like the best insulators made of porcelain.
Refractory slates may be treated advantageously by adding fluxes such as soda, potash and the like in order to improve the economy of the'process.
Such a process may be carried out for ex- Application filed march 23, 1921. Serial No. 454,930.
ample by grinding the slate finely, melting it in'furnaces similar to those .used in manufacturing glass, casting it into moulds and cooling it very carefully and slowly in order to revent the formation of cracks. This coo ingprocessis best carried out in similar furnaces (annealing furnaces) as those used in the glass industry. If the slate contains a large percentage of quartz, lime may be added to prevent too strong a vitrifying ac tion. A strong vitrification enhances the formation of cracks which are, as is well known, inadmissible with electric insulators.
Experiments have shown that insulating slabs of 3 m/m thickness and produced in the manner described above will stand a tension of 25000 volts.
I claim:
1. A process for producing electrical in-. sulating objects, consisting of melting natural slate, casting said slate into moulds and cooling the molten mass slowly.
2. A process for producing electrical insulating objects, consistin of grinding finely natural slate, melting sai slate, casting the molten mass into moulds and cooling it slowly.
3. A process for producing electrical insulating objects, consisting of meltin natural slate to ether with additions o fluxes, casting said slate into moulds and
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US454930A US1430266A (en) | 1921-03-23 | 1921-03-23 | Process for producing electrical insulating objects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US454930A US1430266A (en) | 1921-03-23 | 1921-03-23 | Process for producing electrical insulating objects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1430266A true US1430266A (en) | 1922-09-26 |
Family
ID=23806652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US454930A Expired - Lifetime US1430266A (en) | 1921-03-23 | 1921-03-23 | Process for producing electrical insulating objects |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1430266A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060184701A1 (en) * | 2004-11-24 | 2006-08-17 | Wan Sung Hur | Position changing apparatus |
-
1921
- 1921-03-23 US US454930A patent/US1430266A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060184701A1 (en) * | 2004-11-24 | 2006-08-17 | Wan Sung Hur | Position changing apparatus |
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