US327462A - Insulating compound for electrical cables - Google Patents
Insulating compound for electrical cables Download PDFInfo
- Publication number
- US327462A US327462A US327462DA US327462A US 327462 A US327462 A US 327462A US 327462D A US327462D A US 327462DA US 327462 A US327462 A US 327462A
- Authority
- US
- United States
- Prior art keywords
- electrical cables
- insulating
- insulating compound
- compound
- fluid
- 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
- 150000001875 compounds Chemical class 0.000 title description 24
- 239000012530 fluid Substances 0.000 description 10
- 235000021388 linseed oil Nutrition 0.000 description 10
- 239000000944 linseed oil Substances 0.000 description 10
- 241000779819 Syncarpia glomulifera Species 0.000 description 6
- 229940036248 Turpentine Drugs 0.000 description 6
- 238000009835 boiling Methods 0.000 description 6
- 239000004020 conductor Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000001739 pinus spp. Substances 0.000 description 6
- 239000002657 fibrous material Substances 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000002966 varnish Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000001771 impaired Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000012261 resinous substance Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D191/00—Coating compositions based on oils, fats or waxes; Coating compositions based on derivatives thereof
- C09D191/005—Drying oils
Definitions
- My object is to obtain an insulating compound suitable for use in the manufacture of electrical cables or conductors surrounded by one or more layers or coatings of an absorptive fibrous insulating material.
- the insulating compounds used have either become hard and brittle in course of use, or else have been of a permanently sticky or semi-fluid character, whereby the requisite adherence and stability of the various parts of the cable are impaired.
- the insulating qualities are only obtained by the use of very expensive materials.
- My chief aims in this invention are to produce a cheap compound, that may be applied as a varnish or taken up by the absorptive qualities of any of the ordinary fibrous materials such as are used in the manufacture of cables, which shall possess a very high specific insulation, and which will not harden or become brittle, but remain plastic or viscous only to a degree suflicient to render the cable or insulated conductor pliant and easy to manage.
- the said. compound consists of boiled linseed-oil and (No specimens.)
- This compound may be applied hot to any fibrous coating as a varnish, or the cable may be drawn through it while in a fluid state. It adheres readily to fibrous material, and is absorbed thereby. It never entirely loses its plasticity or viscosity, and possesses a very high specific insulation. These qualities render it very useful as an insulating material.
Description
V UNITED STATES PATENT OFFICE.
HENRY G. SPALDING, OF BOSTON, MASSACHUSETTS.
INSULATING COMPOUND FOR ELECTRICAL CABLES, 80c.
SPECIFICATION forming part of Letters Patent No. 327,462, dated September 29, 1885.
Application filed March 17, 1885.
To all whom it may concern;-
Be it known that I, HENRY O. SPALDING, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Insulating Compounds for Electrical Gables, 850., of which the following is a specification.
My object is to obtain an insulating compound suitable for use in the manufacture of electrical cables or conductors surrounded by one or more layers or coatings of an absorptive fibrous insulating material.
In applications filed by me I have shown and described various forms of such cables, and to these my invention is more particularly applicable, although the same is advantageously applied to any form of conductor or cable in which similar conditions obtain.
In most cases the insulating compounds used have either become hard and brittle in course of use, or else have been of a permanently sticky or semi-fluid character, whereby the requisite adherence and stability of the various parts of the cable are impaired. In the cases of fluid or semi-fluid insulating con1- pounds, too, the insulating qualities are only obtained by the use of very expensive materials.
My chief aims in this invention are to produce a cheap compound, that may be applied as a varnish or taken up by the absorptive qualities of any of the ordinary fibrous materials such as are used in the manufacture of cables, which shall possess a very high specific insulation, and which will not harden or become brittle, but remain plastic or viscous only to a degree suflicient to render the cable or insulated conductor pliant and easy to manage.
I have discovered a compound which possesses these qualities in a marked degree. The said. compound consists of boiled linseed-oil and (No specimens.)
crude turpentine. I heat and mix these in gredientsin such proportions as to form a viscous fluid, the degree of viscosity needed for particular cases being determined by the proportionate amounts of the two ingredients.
Although I prefer turpentine in its natural or crude state, I may use it in reduced condition, or even resin; but in the case of the latter care should be taken to use a sufficient amount of the linseed-oil to maintain the compound in a slightly viscous condition. My invention therefore is not limited to any precise proportions of the ingredients, as the. relative amount of linseed oil is to be increased as the resinous matter is more solid.
This compound may be applied hot to any fibrous coating as a varnish, or the cable may be drawn through it while in a fluid state. It adheres readily to fibrous material, and is absorbed thereby. It never entirely loses its plasticity or viscosity, and possesses a very high specific insulation. These qualities render it very useful as an insulating material.
I am aware that resinous substances, and also crude and boiled linseed-oil, have been largely used in the manufacture of insulating compounds; but so far as I am aware the compounds into which these substances have entered have been distinct in character from that described by me, and designed for different purposes.
What I claim isp The permanently viscous or plastic insulating compound herein described, consisting of boiled linseedoil and crude turpentine or its described equivalent.
In testimony whereof I have hereunto set my hand this 13th day of March, 1885.
HENRY G. SPALDING.
Witnesses:
ALONZO B. W'ENTWORTH, J. J. GOODWIN.
Publications (1)
Publication Number | Publication Date |
---|---|
US327462A true US327462A (en) | 1885-09-29 |
Family
ID=2396577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US327462D Expired - Lifetime US327462A (en) | Insulating compound for electrical cables |
Country Status (1)
Country | Link |
---|---|
US (1) | US327462A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040250455A1 (en) * | 2003-06-10 | 2004-12-16 | Wheeler Thomas J. | Hangtag with tool securing mechanism |
-
0
- US US327462D patent/US327462A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040250455A1 (en) * | 2003-06-10 | 2004-12-16 | Wheeler Thomas J. | Hangtag with tool securing mechanism |
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