GB691618A - Improvements in protective coverings for electric cables, pipes and like elongated articles - Google Patents

Improvements in protective coverings for electric cables, pipes and like elongated articles

Info

Publication number
GB691618A
GB691618A GB2359350A GB2359350A GB691618A GB 691618 A GB691618 A GB 691618A GB 2359350 A GB2359350 A GB 2359350A GB 2359350 A GB2359350 A GB 2359350A GB 691618 A GB691618 A GB 691618A
Authority
GB
United Kingdom
Prior art keywords
layer
sulphur
thicker
covering
accelerator
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
Application number
GB2359350A
Inventor
Douglas Charles Hancock
Donald Eric Hoare
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Balfour Beatty PLC
Original Assignee
Balfour Beatty PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Balfour Beatty PLC filed Critical Balfour Beatty PLC
Priority to GB2359350A priority Critical patent/GB691618A/en
Publication of GB691618A publication Critical patent/GB691618A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/2806Protection against damage caused by corrosion

Abstract

691,618. Cable sheaths. BRITISH INSULATED CALLENDER'S CABLES, Ltd. Sept. 25, 1951 [Sept. 26, 1950], No. 23593/50. Drawings to Specification. Class 36. [Also in Groups XVIII, XXV and XXVIII] An electric cable has a corrosion preventing covering comprising inner and outer layers, one layer being substantially thicker than the other and formed of an unvulcanized rubber compound containing an ultra-rapid accelerator and compounding ingredients, but no sulphur, and the other layer comprising a fabric tape carrying a rubber compound containing a large proportion of sulphur, which is applied so that its rubber coating is in close contact with the thicker rubber layer. The unvulcanized rubber compound may be applied as the inner or outer layer and may be in the form of tapes which are applied by lapping or longitudinal folding. After applying an outer covering of bitumenimpregnated hessian the cable is stored at room temperature. The sulphur from the thin layer migrates into the thicker layer and vulcanization proceeds under the influence of the accelerator. A slightly elevated temperature may be used, provided there is no deformation of the covering. Curing of the thin layer may also take place as the accelerator slowly migrates from the thick layer.
GB2359350A 1950-09-26 1950-09-26 Improvements in protective coverings for electric cables, pipes and like elongated articles Expired GB691618A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2359350A GB691618A (en) 1950-09-26 1950-09-26 Improvements in protective coverings for electric cables, pipes and like elongated articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2359350A GB691618A (en) 1950-09-26 1950-09-26 Improvements in protective coverings for electric cables, pipes and like elongated articles

Publications (1)

Publication Number Publication Date
GB691618A true GB691618A (en) 1953-05-20

Family

ID=10198189

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2359350A Expired GB691618A (en) 1950-09-26 1950-09-26 Improvements in protective coverings for electric cables, pipes and like elongated articles

Country Status (1)

Country Link
GB (1) GB691618A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144457A (en) * 1982-02-08 1985-03-06 Amsted Ind Inc Wire rope

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144457A (en) * 1982-02-08 1985-03-06 Amsted Ind Inc Wire rope

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