GB777597A - Improvements relating to the mechanical protection of electric cables - Google Patents

Improvements relating to the mechanical protection of electric cables

Info

Publication number
GB777597A
GB777597A GB29511/54A GB2951154A GB777597A GB 777597 A GB777597 A GB 777597A GB 29511/54 A GB29511/54 A GB 29511/54A GB 2951154 A GB2951154 A GB 2951154A GB 777597 A GB777597 A GB 777597A
Authority
GB
United Kingdom
Prior art keywords
sleeve
casing
cable
tube
inner tube
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
GB29511/54A
Inventor
Edward Leslie Davey
William Young Murray
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
British Insulated Callenders Submarine Cables Ltd
Original Assignee
British Insulated Callenders Submarine Cables Ltd
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 BE470622D priority Critical patent/BE470622A/xx
Priority to NL73353D priority patent/NL73353C/xx
Priority to BE541998D priority patent/BE541998A/xx
Priority to US71411A priority patent/US2158492A/en
Priority to US315147A priority patent/US2261613A/en
Priority to GB278/41A priority patent/GB545846A/en
Priority to US383513A priority patent/US2292358A/en
Application filed by British Insulated Callenders Submarine Cables Ltd, BICC PLC filed Critical British Insulated Callenders Submarine Cables Ltd
Priority to GB29511/54A priority patent/GB777597A/en
Priority to US538944A priority patent/US2897253A/en
Priority to FR1132729D priority patent/FR1132729A/en
Publication of GB777597A publication Critical patent/GB777597A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
    • H02G15/12—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes for incorporating transformers, loading coils or amplifiers
    • H02G15/14—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes for incorporating transformers, loading coils or amplifiers specially adapted for submarine cables
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Cable Accessories (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

777,597. Cables; cable joints. BRITISH INSULATED CALLENDER'S (SUBMARINE CABLES), Ltd. Oct. 12, 1955 [Oct. 13, 1954], No. 29511/54. Classes 36 and 38 (1). [Also in Group XXVIII] In order to prevent damage to a submarine cable when it is being lifted, the cable is threaded through two or more nested lengths of tubing of unequal lengths forming a flexible; sleeve at, or in the neighbourhood of, the lifting-point, for example at a joint or accessory. In Figs. 1-3, the cable 1 is threaded through a sleeve in the form of inner and outer flexible steel tubings 2, 3, each of interlocking helical turns of profiled metal strip, attached to a rectangular extension 6 of a joint or accessory casing 4 by soldering or welding to a sleeve 7. The latter is welded to channel members 8, 9 carried by channel members 10, 11 welded to the extension 6. A bell 12 having a circular inner surface and an outer surface which is square at the larger end and merges into circular at the inner end, is attached by lugs 13, 14 to members 10, 11. The tubes 2, 3 may have their flexibility graded by wires 16, 17 secured in the helical grooves, Fig. 3, by welding, and the grading may be made more gradual by using wires of smoothly-varying, or stepped, cross-section. The other end of the casing 4 may have a similar arrangement. Where a lift is to be applied remote from the casing 4, the outer tube 26 is positioned centrally on the inner tube 27, but this arrangement may be modified by extending the inner tube 27 so as to form also the inner tube of the sleeve 27, 29 of the adjacent casing 28. A two-part rigid tubular member 25 to take lifting tackle is placed over tube 26, its bore being bell-mouthed at each end.
GB29511/54A 1936-03-28 1954-10-13 Improvements relating to the mechanical protection of electric cables Expired GB777597A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
BE470622D BE470622A (en) 1940-01-23
NL73353D NL73353C (en) 1940-01-23
BE541998D BE541998A (en) 1940-01-23
US71411A US2158492A (en) 1936-03-28 1936-03-28 Undersea cable system
US315147A US2261613A (en) 1940-01-23 1940-01-23 Deep-sea apparatus housing
GB278/41A GB545846A (en) 1940-01-23 1941-01-08 Improvements in or relating to housings for apparatus employed in submarine cable systems
US383513A US2292358A (en) 1940-01-23 1941-03-15 Deep-sea apparatus housing
GB29511/54A GB777597A (en) 1954-10-13 1954-10-13 Improvements relating to the mechanical protection of electric cables
US538944A US2897253A (en) 1940-01-23 1955-10-06 Mechanical protection of electric cables
FR1132729D FR1132729A (en) 1940-01-23 1955-10-11 Improvements to the mechanical protection of electrical cables

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29511/54A GB777597A (en) 1954-10-13 1954-10-13 Improvements relating to the mechanical protection of electric cables

Publications (1)

Publication Number Publication Date
GB777597A true GB777597A (en) 1957-06-26

Family

ID=10292686

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29511/54A Expired GB777597A (en) 1936-03-28 1954-10-13 Improvements relating to the mechanical protection of electric cables

Country Status (1)

Country Link
GB (1) GB777597A (en)

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