US1368025A - Electrically-insulating tape - Google Patents
Electrically-insulating tape Download PDFInfo
- Publication number
- US1368025A US1368025A US349771A US34977120A US1368025A US 1368025 A US1368025 A US 1368025A US 349771 A US349771 A US 349771A US 34977120 A US34977120 A US 34977120A US 1368025 A US1368025 A US 1368025A
- Authority
- US
- United States
- Prior art keywords
- strip
- insulating
- electrically
- tape
- insulating tape
- 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
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Classifications
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- 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
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/48—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
- H01B3/50—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials fabric
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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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
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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
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2475—Coating or impregnation is electrical insulation-providing, -improving, or -increasing, or conductivity-reducing
Description
H. I. DIAMOND.
ELECTRICALLY INSULATING TAPE. APPLICATION FILED JAN. 6. 1920.
1,368,025. Patented Feb. 8,1921.
Friction material UNITED STATES PATENT OFFICE.
HARRY I. DIAMOND, or ATLANTA, GEORGIA.
ELECTRICALLY-INSULATING TAPE.
Specification of Letters Patent.
Patented Feb. 8, 1921.
Application filed January 6, 1920. Serial No. 349,771.
and eliminate certain kinds of imperfect work now common where unfaithful workmen are employed.
It is usual to wind about bare conductors strips of good insulating material such as plastic, adhesive rubber or gutta percha compound and afterward to cover this insulation by winding about it a strip of fabric having friction material upon its face. It sometimes happens that a workman exhausts his supply of insulating strips while having left a stock of covering strip, which is itself capable of insulating in some degree. If, for example, he must thusomit the insulating strip on a splice or two or else return on another day to complete the work properly, he may save time by using the covering strip alone. The bad work cannot be discovered by ordinary inspection, yet later it may lead to very serious loss.
In the accompanying drawings,
Figure 1 is a view showing a portion of my novel tape with its several layers broken away to show in succession a small portion of the various layers.
Fig. 2 is a cross section of the same tape showing the layers greatly exaggerated in thickness.
In these figures, A represents a strip of approved insulating material, preferably pliable adhesiie rubber or gutta percha compound, and B an equal superposed adherent strip, preferably of Holland or fabric filled and sized, the functionof this strip being the temporary protection of the strip when rolled and the prevention of too strong so adhesion of the adjacent friction surface.
mprovements in Electrically-Insu- When a piece of the strip is to be used, this layer is stripped from it. C represents a fabric layer having on each face a coating D of soft highly adhesive friction material. When the tape made up of these several connected layers is coiled upon itself, the outer friction layer adheres with moderate tenacity to the layer B but not so strongly as to prevent unwinding of the tape by a strong pull upon its end portion. In using the tape a portion from which the layer B has been stripped is wound firmly around the conductor to be insulated, usually forming a helix with its margins overlapping, and pressed down so that all air and moisture are excluded and all crevices and interstices are closed. This operation is quickly and perfectly performed and with almost unavoidable perfection owing to the character of the tape and the fact that it is soft and lies between the overlapping surfaces of the insulation proper. The entire tape is put securely in place in far less time than is usually required to apply the layer A, and the work is less likely to be imperfect at any point, the conductor lying in the axis strip of fabric having both faces coated with soft, insulating, highly adhesive friction material, said plastic material having its otherwise exposed face protected by a slightly adhering strip itself of non-adherent material.
2. Insulating tape consisting of a strip of plastic adhesive material of highly insulating character superposed on an analogous strip of fabric having both its faces coated with friction material.
,3. Insulating tape consisting of a strip of fabric impregnated with insulating material, such as rubber or gutta percha compound, or other approved insulating material, bearing upon each face a coat of friction material, and a superposed strip of plastic, adhesive, rubber-like" insulating compound secured permanently upon one ofthe frictioned faces of the fabric strip.
In testimony whereof I hereunto aflix my signature.
HARRY I. DIAMOND;
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US349771A US1368025A (en) | 1920-01-06 | 1920-01-06 | Electrically-insulating tape |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US349771A US1368025A (en) | 1920-01-06 | 1920-01-06 | Electrically-insulating tape |
Publications (1)
Publication Number | Publication Date |
---|---|
US1368025A true US1368025A (en) | 1921-02-08 |
Family
ID=23373883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US349771A Expired - Lifetime US1368025A (en) | 1920-01-06 | 1920-01-06 | Electrically-insulating tape |
Country Status (1)
Country | Link |
---|---|
US (1) | US1368025A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4304813A (en) * | 1980-07-14 | 1981-12-08 | Milliken Research Corporation | Pressure sensitive tape with a warp knit and weft insertion fabric |
US20160356385A1 (en) * | 2015-06-04 | 2016-12-08 | Hawa Valves (India) Private Limited | Non-Rising Stem Globe Valve |
-
1920
- 1920-01-06 US US349771A patent/US1368025A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4304813A (en) * | 1980-07-14 | 1981-12-08 | Milliken Research Corporation | Pressure sensitive tape with a warp knit and weft insertion fabric |
US20160356385A1 (en) * | 2015-06-04 | 2016-12-08 | Hawa Valves (India) Private Limited | Non-Rising Stem Globe Valve |
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