GB444938A - Improvements relating to the production of sheaths for electric cables - Google Patents

Improvements relating to the production of sheaths for electric cables

Info

Publication number
GB444938A
GB444938A GB22553/35A GB2255335A GB444938A GB 444938 A GB444938 A GB 444938A GB 22553/35 A GB22553/35 A GB 22553/35A GB 2255335 A GB2255335 A GB 2255335A GB 444938 A GB444938 A GB 444938A
Authority
GB
United Kingdom
Prior art keywords
bismuth
tellurium
sheaths
production
electric cables
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
GB22553/35A
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens AG
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 Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Publication of GB444938A publication Critical patent/GB444938A/en
Expired legal-status Critical Current

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
    • H01B7/20—Metal tubes, e.g. lead sheaths
    • H01B7/204—Metal tubes, e.g. lead sheaths composed of lead

Landscapes

  • Conductive Materials (AREA)

Abstract

Lead-tellurium alloys for the production of sheaths for electric cables contain also small quantities of metals, such as bismuth, thallium, or copper, which form a eutectic mixture with relatively high proportions of tellurium, the additional metal being present in less proportion than the tellurium. For example, such a proportion of a bismuth-tellurium eutectic containing 15 per cent of bismuth may be added to lead that the final alloy contains 0,01 per cent or less of bismuth. In making the sheaths, the melting charges are preferably not substantially greater than is necessary for filling the receptacle of the extrusion press, and each fresh melt is preferably made during the working or pressing of the previously made melt.
GB22553/35A 1934-09-06 1935-08-09 Improvements relating to the production of sheaths for electric cables Expired GB444938A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE444938X 1934-09-06

Publications (1)

Publication Number Publication Date
GB444938A true GB444938A (en) 1936-03-31

Family

ID=6537686

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22553/35A Expired GB444938A (en) 1934-09-06 1935-08-09 Improvements relating to the production of sheaths for electric cables

Country Status (1)

Country Link
GB (1) GB444938A (en)

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