GB674994A - Improvements in insulated electric conductors - Google Patents

Improvements in insulated electric conductors

Info

Publication number
GB674994A
GB674994A GB2639049A GB2639049A GB674994A GB 674994 A GB674994 A GB 674994A GB 2639049 A GB2639049 A GB 2639049A GB 2639049 A GB2639049 A GB 2639049A GB 674994 A GB674994 A GB 674994A
Authority
GB
United Kingdom
Prior art keywords
sheath
talc
powder
aluminium
wire
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
GB2639049A
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
BICC 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
Priority to BE498511D priority Critical patent/BE498511A/xx
Application filed by BICC PLC filed Critical BICC PLC
Priority to GB2639049A priority patent/GB674994A/en
Priority to FR1025307D priority patent/FR1025307A/en
Publication of GB674994A publication Critical patent/GB674994A/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
    • H01B7/16—Rigid-tube cables

Landscapes

  • Manufacturing Of Electric Cables (AREA)
  • Insulated Conductors (AREA)

Abstract

674,994. Cables. BRITISH INSULATED CALLENDER'S CABLES, Ltd., and LORCH, H. R. Oct. 13, 1950 [Oct. 14, 1949], No. 26390/49. Class 36. [Also in Group XXII] An insulated electric conductor comprises one or more wires embedded in powdered talc and enclosed in an aluminium sheath which has been drawn down to compress the powder. The aluminium sheath may be extruded around, but not in contact with, the wires, the space within the sheath being filled with dry talc powder as the sheath is formed, or the cable may be made by applying the powder to the wires in the form of a paste which is then dried and around which the aluminium sheath is extruded. The aluminium sheath is formed in an extrusion press having a hollow ram 1 within which is a hollow mandrel 5 through which the wire 11 is passed. If the talc is to be applied as a powder it is fed from a hopper 7 supported above the mandrel 5, and is forced into the extruded aluminium sheath by a damper 9. The covered wire then passes through a reducing die 12 which draws down aluminium sheath and compresses the talc. In the alternative method the talc is in the form of a paste and is applied to the wire by extrusion. The wire then passes through a drying oven. before reaching the aluminium press, from which the hopper and ram are omitted.
GB2639049A 1949-10-14 1949-10-14 Improvements in insulated electric conductors Expired GB674994A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE498511D BE498511A (en) 1949-10-14
GB2639049A GB674994A (en) 1949-10-14 1949-10-14 Improvements in insulated electric conductors
FR1025307D FR1025307A (en) 1949-10-14 1950-09-29 Improvements to insulated electrical conductors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2639049A GB674994A (en) 1949-10-14 1949-10-14 Improvements in insulated electric conductors

Publications (1)

Publication Number Publication Date
GB674994A true GB674994A (en) 1952-07-02

Family

ID=10242885

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2639049A Expired GB674994A (en) 1949-10-14 1949-10-14 Improvements in insulated electric conductors

Country Status (3)

Country Link
BE (1) BE498511A (en)
FR (1) FR1025307A (en)
GB (1) GB674994A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3005038A (en) * 1958-12-31 1961-10-17 Mc Graw Edison Co High temperature radio frequency cable and method of making the same
GB2205263A (en) * 1987-06-03 1988-12-07 Ass Elect Ind Manufacture of mineral insulated cables
US9283734B2 (en) 2010-05-28 2016-03-15 Gunite Corporation Manufacturing apparatus and method of forming a preform

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3005038A (en) * 1958-12-31 1961-10-17 Mc Graw Edison Co High temperature radio frequency cable and method of making the same
GB2205263A (en) * 1987-06-03 1988-12-07 Ass Elect Ind Manufacture of mineral insulated cables
GB2205263B (en) * 1987-06-03 1991-03-06 Ass Elect Ind Manufacture of mineral insulated cables
US9283734B2 (en) 2010-05-28 2016-03-15 Gunite Corporation Manufacturing apparatus and method of forming a preform

Also Published As

Publication number Publication date
BE498511A (en) 1951-02-01
FR1025307A (en) 1953-04-14

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