GB499311A - Improvement in electrical cable - Google Patents
Improvement in electrical cableInfo
- Publication number
- GB499311A GB499311A GB19954/37A GB1995437A GB499311A GB 499311 A GB499311 A GB 499311A GB 19954/37 A GB19954/37 A GB 19954/37A GB 1995437 A GB1995437 A GB 1995437A GB 499311 A GB499311 A GB 499311A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sheath
- thin
- conductors
- rubber
- lead
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/228—Metal braid
Landscapes
- Insulated Conductors (AREA)
Abstract
499,311. Cables. GENERAL CABLE CORPORATION. July 19, 1937, No. 19954. Convention date, Aug. 8, 1936. [Class 36] A high tension cable comprises a conductor or conductors enveloped in porous insulating material, a thin flexible impervious integument enclosing the insulated conductor or conductors, an insulating compound which impregnates the porous insulating material and fills all interstices within the integument, an outer expansible and contractible sheath, and an elastic reinforcing element for the sheath applied or arranged in such a manner, dependent on the elastic properties of said element, so as to remain elastic when strained by expansion of the insulating compound under operating conditions yet resist said expansion sufficiently to maintain the insulating compound at a desired positive pressure. The impervious integument may consist of lead, or a non-metallic oil-resistant material such as Thiokol or that known under the Registered Trade Mark "Duprene," whilst the outer expansible and contractible sheath may be formed of a vulcanized rubber compound, the reinforcing element consisting of metal, fibrous, or rubber strands superimposed on or embedded in the sheath and helically applied, preferably as an open braid, with such a lay as to remain elastic under maximum expansion conditions of the sheath yet to store sufficient energy on expansion of the sheath to cause contraction of the sheath when the impregnating compound within the sheath contracts. In the construction shown in Figs. 1 and 2 conductors 21, each insulated with impregnated paper 22 and enclosed in a thin lead sheath 23 which is protected against wrinkling by an overlapping wrapping 24 of friction tape applied on a coating of a cement known under the Registered Trade Mark " Bakelite," are cabled together, with or without rubber fillers 25, and enclosed in a composite sheath comprising a wrapping 26 of rubberized cloth tape and inner and outer vulcanized rubber layers 27, 29, between which layers is disposed the elastic reinforcing element consisting of an open braiding 28 of cotton string applied under tension. In the modified construction of Fig. 4 the insulated conductors 31 are individually wrapped with metal tape 33 and are enclosed, together with fillers 35 in a triangular thin common lead sheath 38, protected against wrinkling and enclosed by a reinforced composite outer sheath as described with reference to Figs. 1 and 2, the inner rubber layer 40 of the composite sheath being formed with a circular outer periphery. In another construction, similar to that of Fig. 4, the thin common lead sheath is of circular section and the outer sheath comprises a single rubber layer reinforced by an external wrapping of wires. In a further construction the insulated conductors have a thin common circular lead sheath over which is applied a square sectioned reinforced composite outer sheath formed similarly to that shown in Figs. 1 and 2. Rubber fillers are disposed between the internal corners of the square sheath and the surface of the circular sheath. In any of the above constructions the thin lead sheath may be replaced by a sheath helically wrapped corrugated thin metal tapes 93, Fig. 10, the edges of adjacent tapes being soldered together. Specification 378,997 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US499311XA | 1936-08-08 | 1936-08-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB499311A true GB499311A (en) | 1939-01-19 |
Family
ID=21962510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB19954/37A Expired GB499311A (en) | 1936-08-08 | 1937-07-19 | Improvement in electrical cable |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB499311A (en) |
NL (1) | NL47593C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114005577A (en) * | 2021-11-30 | 2022-02-01 | 中天科技海缆股份有限公司 | Submarine cable heterogeneous conductor and processing method thereof, submarine cable and preparation method thereof |
CN114283985A (en) * | 2022-01-05 | 2022-04-05 | 重庆智荟数创科技有限公司 | Corrosion-resistant cable and manufacturing method thereof |
-
0
- NL NL47593D patent/NL47593C/xx active
-
1937
- 1937-07-19 GB GB19954/37A patent/GB499311A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114005577A (en) * | 2021-11-30 | 2022-02-01 | 中天科技海缆股份有限公司 | Submarine cable heterogeneous conductor and processing method thereof, submarine cable and preparation method thereof |
CN114283985A (en) * | 2022-01-05 | 2022-04-05 | 重庆智荟数创科技有限公司 | Corrosion-resistant cable and manufacturing method thereof |
CN114283985B (en) * | 2022-01-05 | 2023-09-15 | 邢台市华盛线缆有限公司 | Method for manufacturing corrosion-resistant cable |
Also Published As
Publication number | Publication date |
---|---|
NL47593C (en) |
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