US751664A - Electric insulator - Google Patents
Electric insulator Download PDFInfo
- Publication number
- US751664A US751664A US751664DA US751664A US 751664 A US751664 A US 751664A US 751664D A US751664D A US 751664DA US 751664 A US751664 A US 751664A
- Authority
- US
- United States
- Prior art keywords
- silicate
- soda
- mass
- article
- 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
- 239000003989 dielectric material Substances 0.000 title 2
- 239000000463 material Substances 0.000 description 24
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 22
- BPQQTUXANYXVAA-UHFFFAOYSA-N silicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 20
- 238000000034 method Methods 0.000 description 18
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 16
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 16
- 239000011507 gypsum plaster Substances 0.000 description 16
- 239000010425 asbestos Substances 0.000 description 14
- 238000001035 drying Methods 0.000 description 14
- 229910052895 riebeckite Inorganic materials 0.000 description 14
- 239000004020 conductor Substances 0.000 description 10
- 238000010422 painting Methods 0.000 description 8
- 238000004078 waterproofing Methods 0.000 description 8
- 239000012212 insulator Substances 0.000 description 6
- 239000003973 paint Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000010891 electric arc Methods 0.000 description 4
- 238000005755 formation reaction Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- MXCPYJZDGPQDRA-UHFFFAOYSA-N dialuminum;2-acetyloxybenzoic acid;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3].CC(=O)OC1=CC=CC=C1C(O)=O MXCPYJZDGPQDRA-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/32—Single insulators consisting of two or more dissimilar insulating bodies
Definitions
- My invention relates to electric insulating 1 materials in general, and more specifically consists of an improved material for producing an insulation against the passage of an electric arc.
- the article so produced is then immersed in a bath of approximately three parfi of sillcate of sma to one part of Water by weig r s ath the article is com ressed in a mold and usually again sub- 'ected'to.
- the S1lICaEB-OT-SOdawSOlUtlOH Bath and me as'e ore. 18 s p in o 0*" may 5 be repeated according to the desired density and hardness of the completed article; but I have found onerepetition as above described to be usually sufficient.
- I then fire the com ressed mass sub ecting it to a degree of Eea suflTc'ient to vitrify.
- the sheet or article so formed is then bufied'by rubbing with sandpaper, a file, or other abrading means and can be cut, drilled, turned, or otherwise' 5 operated on by tools in the usual way to give it the exact form desired.
- the article is rendered waterproof by painting it with liquid asphaltum or anysuitable waterproofing paint 7 or compound.
- the painting is done after the bufling, as that prepares the surface so that the paint will adhere more strongly.
- the advantages of the completed .article comprise its high resistance to the electric arc, its lightness and rigidity, and the ease with which it can be bored or otherwise worked with tools without splitting, breaking, or chip-
- the proportions of the constituent parts given above could be varied within limits, and I other fireproof materials might be substituted for asbestos, so long as the substitute material is fireproof and of sufficiently absorbent nature to take up the silicate-of-soda solution.
- Thepurpose of the plaster-of-paris is to give body and rigidity to the article, and other materials might be substituted for or added to the plaster-of-paris to produce this effect.
- the herein-described process of producing a material impervious to the passage of electric arcs which comprises the following steps: first, mixing plaster-of-paris with an excess of short-fibered asbestos in a solution of silicate of soda; second, drying the mass, subjecting it to a bath of silicate-of-soda solution and compressing a sufiicient number of times to produce the required degree of density and rigidity of the finished product; third, vitrifying the mass by heat; fourth, bufiing the surface of the mass.
- the herein-described process of producing a material impervious to the passage of electric arcs which comprises the following steps: first, mixing plaster-of-paris with an excess of short-fibered asbestos in a solution of silicate of soda; second, drying same, and subjecting it to a bath of diluted silicate of soda, third, compressing; fourth, drying; and again submitting to a bath of the silicate-ofsoda solution; fifth, again compressing; sixth, vitrifying by heat; seventh, bufiing the surfaces of the article produced by the foregoing process.
- the herein-described process of producing a material impervious to the passage of electric arcs which comprises the following steps: first, mixing plaster-of-paris with an excess of short-fibered asbestos in a solution of silicate of soda; second, drying same, and subjecting it to a bath of diluted silicate of soda; third, compressing, fourth, drying; and again submitting to a bath of the silicate-of soda solution; fifth, again compressing; sixth, vitrifying by heat; seventh, buffing the surfaces of the article produced by the foregoing process; eighth, painting the surface of the mass with a waterproofing substance.
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Description
Q Ne PLASTIC. Cross Reference Patented February 9, 1904.
PATENT QFFICE,
THOMAS 'r. OF MONTOLAIR, NEW JERSEY, ASSIGNOR TO H. W.
' 'JOHNS-MANVILLE COMPANY, OF
OF YORK.
NEW- .Y RK, N. Y.', A CORPORATION ELECTRIC msuL 'ron.
SPECIFICATION forming part of Letters Patent No. 751,664, dated February 9 1904.
Application filed April 4, 1902. Serial No. 101,378- (No speoimena-) To all whom, it may concern.-
Be it known that I, THOMAS T. LYMAN, a citi-.
zen of the United States of America, and a .resident of Montclair, county of Essex, and
' 5 State of New Jersey, have invented certain new and useful Improvements in Electric Insulators, of which the follow'ingis a specifi cation. v
My invention relates to electric insulating 1 materials in general, and more specifically consists of an improved material for producing an insulation against the passage of an electric arc.
In many electric installations conductors I carrying heavy currents are separated by narrow spaces and the tendency of the current to are across the intervening space is diificult to restrain. This is especially so where the circuit between the adjacent conductors is being alternately made and broken by means of a moving conductor alternately thrown into and out d contact with the stationary conductors. My invention produces a material which when interposed between the conduc- 2 5 tors is most efficient in preventing the formation of such arcs. It is composed of asbestos plaster-of-paris, and silicate of soda, compressed and vitrified by heat, and with the addition, if desired, of any waterproofing 3 paint or other material applied to the surfaces.
My preferred process of making these insulators or arc-shields, as they are called in the trade, is the following: Plaster-of-paris is first mixed with an excess of short-fibered as- 3'5 bestosor other fireproof material. The usual proportions are about sixty parts of asbestos to twenty-five parts of plaster-ohm weight. This mixture iSTWOlH- tion of silicate of soda sufficient to render the esive an se -sustaining. Usually about fifteen parts, by weight, of the silicate of soda is suflicient. It is then mo in o a shape approximately that of md article and dried. The article so produced is then immersed in a bath of approximately three parfi of sillcate of sma to one part of Water by weig r s ath the article is com ressed in a mold and usually again sub- 'ected'to. the S1lICaEB-OT-SOdawSOlUtlOH Bath and me as'e ore. 18 s p in o 0*" may 5 be repeated according to the desired density and hardness of the completed article; but I have found onerepetition as above described to be usually sufficient. After the final compression I then fire the com ressed mass sub ecting it to a degree of Eea suflTc'ient to vitrify. This produces a hard and rigid mass of the shape given by the mold, which has the, propertyof resisting and preventing the passage of an electric are when inserted between the conductors, across which the arc might otherwise tend to establish itself. v The sheet or article so formed is then bufied'by rubbing with sandpaper, a file, or other abrading means and can be cut, drilled, turned, or otherwise' 5 operated on by tools in the usual way to give it the exact form desired. Either before or after this step in the process the article is rendered waterproof by painting it with liquid asphaltum or anysuitable waterproofing paint 7 or compound. Preferably the painting is done after the bufling, as that prepares the surface so that the paint will adhere more strongly. The advantages of the completed .article comprise its high resistance to the electric arc, its lightness and rigidity, and the ease with which it can be bored or otherwise worked with tools without splitting, breaking, or chip- The proportions of the constituent parts given above could be varied within limits, and I other fireproof materials might be substituted for asbestos, so long as the substitute material is fireproof and of sufficiently absorbent nature to take up the silicate-of-soda solution. Thepurpose of the plaster-of-paris is to give body and rigidity to the article, and other materials might be substituted for or added to the plaster-of-paris to produce this effect.
Having therefore described my invention, 9 what I claim as new, and desire 'to protect by Letters Patent, is 1. As a new article of manufacture, an insulator to prevent the formation of electric A Examine:
2. The herein-described process of produc-' of silicate of soda; second, drying the mass,
subjecting it to a bath of silicate-of-soda solution and compressing a suflicient number of times to produce the required degree of density and rigidity of the finished product; third, vitrifying the mass by heat.
3. The herein-described process of producing a material impervious to the passage of electric arcs which comprises the following steps: first, mixing plaster-of-paris with an excess of short-fibered asbestos in a solution of silicate of soda; second, drying the mass, subjecting it to a bath of silicate-of-soda solution and compressing a sufiicient number of times to produce the required degree of density and rigidity of the finished product; third, vitrifying the mass by heat; fourth, bufiing the surface of the mass.
4. The herein-described process of producing a material impervious to the passage of electric arcs which comprises the following steps: first, mixing plaster-of-paris with an excess of short-fibered asbestos in-a solution -of silicate of soda; second, drying the mass,
subjecting it to a bathof silicate-of-soda solution and compressing a sufficient number of times to produce the required degree of denbufling the surface of the mass; fifth, painting the surface of the mass with a waterproofing substance.
5. The herein-described process of producing a material impervious to the passage of electric arcs which comprises the following steps: first, mixing plaster-of-paris with an excess of short-fibered asbestos in a solution of silicate of soda; second, drying same, and subjecting it to a bath of diluted silicate of soda, third, compressing; fourth, drying; and again submitting to a bath of the silicate-ofsoda solution; fifth, again compressing; sixth, vitrifying by heat; seventh, bufiing the surfaces of the article produced by the foregoing process.
6. The herein-described process of producing a material impervious to the passage of electric arcs which comprises the following steps: first, mixing plaster-of-paris with an excess of short-fibered asbestos in a solution of silicate of soda; second, drying same, and subjecting it to a bath of diluted silicate of soda; third, compressing, fourth, drying; and again submitting to a bath of the silicate-of soda solution; fifth, again compressing; sixth, vitrifying by heat; seventh, buffing the surfaces of the article produced by the foregoing process; eighth, painting the surface of the mass with a waterproofing substance.
Signed at New York this 1st day of April, 1902.
THOMAS T. LYMAN.
Witnesses:
L. R; HOFF, F. SLWILLI MB.
Publications (1)
Publication Number | Publication Date |
---|---|
US751664A true US751664A (en) | 1904-02-09 |
Family
ID=2820157
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US751664D Expired - Lifetime US751664A (en) | Electric insulator |
Country Status (1)
Country | Link |
---|---|
US (1) | US751664A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3169932A (en) * | 1962-03-21 | 1965-02-16 | Pakistan Council Of Scient And | Method of producing artificial marble from barium sulfate and aqueous alkali silicate |
-
0
- US US751664D patent/US751664A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3169932A (en) * | 1962-03-21 | 1965-02-16 | Pakistan Council Of Scient And | Method of producing artificial marble from barium sulfate and aqueous alkali silicate |
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