US1924106A - Submarine cable loading coil - Google Patents

Submarine cable loading coil Download PDF

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Publication number
US1924106A
US1924106A US470648A US47064830A US1924106A US 1924106 A US1924106 A US 1924106A US 470648 A US470648 A US 470648A US 47064830 A US47064830 A US 47064830A US 1924106 A US1924106 A US 1924106A
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US
United States
Prior art keywords
loading coil
submarine cable
coil
loading
housing
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 - Lifetime
Application number
US470648A
Inventor
Oliver E Buckley
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.)
AT&T Corp
Original Assignee
Bell Telephone Laboratories Inc
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 Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc
Priority to US470648A priority Critical patent/US1924106A/en
Priority to GB18551/31A priority patent/GB380848A/en
Priority to FR720168D priority patent/FR720168A/en
Application granted granted Critical
Publication of US1924106A publication Critical patent/US1924106A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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

Definitions

  • the present invention relates to. lump loaded submarine signaling cables and particularly to the construction of the loading coil housings customarily used in such cables; 1
  • An object of the invention is to protect the loading coils of submarine signaling cables from mechanical injury without decreasing the efliciency of signal transmission over such cables.
  • a further object of the invention is to provide a loading coil housing which will permit easy and convenient assembly.
  • this" loss is eliminated or at least minimized to such an extent as to render'possible the transmission of voice currents over considerable distances, by providing non-magnetic gaps in the body of the housings, such as rectangular, or otherwise shaped openings or slots.
  • these openings or slots are arranged in staggered formation.
  • Fig. 1 represents a longitudinal section through a loadingcoil housing, the core of magnetic material and the surrounding winding being shown in elevation; 1 I
  • Fig. 2 represents a View in elevation of a loading coil housing in accordance with the invention when applied to a submarine cable of the.
  • Fig. 1 the elongated core of magnetic material 10 is surrounded by an insulated winding 11 which is welded or otherwise securely connected to the conductor 12 as shown.
  • Fig. 2 represents an elevational view of a loading coil housing in accordance with the invention.
  • the gaps 16 are staggered, as shown.
  • This figure furthermore shows a method of in- 2 serting the loading coil housing into a cable of the twin conductor type.
  • the return conductor 18 may be terminated short of the loading coil and the sea water and armor wires relied upon the copper return conductor 18 may be connected to the protective housing in the manner shown.
  • a material which is particularly suitable as a housing in accordance with this invention is cop-- per or, copper-clad steel; on account of the corrosion resistance of copper when submerged in sea water, and its high conductivity.
  • the housing isfi divided longitudinally along line'AB (Fig. 2).1"
  • Fig. 2).1 For the purpose of preventing longitudinal or .transverse displacements of one half of the which fit into four correspondingslots 20 of the other half. Sufficient clamping action is exerted by, the armor to assure tight contact between the shell halves and to obviate the provision of special clamping means inthis particular embodi- I 3.
  • a submarine cable including a'loading coil comprising a case and having an external mag netic field, said coil and case being adapted to minimize energy losses due to the flow of signaling currents in said coil, said coil comprising a core of magnetic material and a winding surjf rounding said core, the insulation and fabriccovering of the cable being continued over and surrounding said Winding, said case consisting of a material having a tensile strength higher than that of ordinary highly permeable magnetic iron and being split longitudinally into a plurality

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electric Cable Installation (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Insulated Conductors (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)

Description

Aug. 29, 1933 Q E, BUCKLEY 1,9243% SUBMARINE CABLE LOADING COIL Filed July 25, 1930 INVENTUR U. E; EUCKL EY M J ATTORNEY SUBMARINE CABLE LOADING 0011.
Oliver E. Buckley, Maplewood; N. J., assignor to Bell Telephone Laboratories, Incorporated, New York, N. Y., a Corporation'of New York Application .July 25, 1930. Serial No.'470,648 3 Claims. (01. 178-46) The present invention relates to. lump loaded submarine signaling cables and particularly to the construction of the loading coil housings customarily used in such cables; 1
An object of the invention is to protect the loading coils of submarine signaling cables from mechanical injury without decreasing the efliciency of signal transmission over such cables.
A further object of the invention is to provide a loading coil housing which will permit easy and convenient assembly. 1
It has heretofore been proposed to enclose submarine cable loading coils in metallic envelopes or housings. When signaling currents are transmitted over loaded cables the loading coils of which are provided With such housings, eddy cur-,
rents are generated in the metallic housing and a considerable loss of signaling energy ensues.
These losses are particularly troublesome when.
loading coils with windings of thesolenoidal'type r are used, since'these coils have an external field of considerable intensity.
In accordance with the presentinvention, this" loss is eliminated or at least minimized to such an extent as to render'possible the transmission of voice currents over considerable distances, by providing non-magnetic gaps in the body of the housings, such as rectangular, or otherwise shaped openings or slots. In order to further re-v duce the tendency to the formation of eddy currents, these openings or slots are arranged in staggered formation.
In the accompanying drawing which shows one embodiment of the present invention:
Fig. 1 represents a longitudinal section through a loadingcoil housing, the core of magnetic material and the surrounding winding being shown in elevation; 1 I
Fig. 2 'represents a View in elevation of a loading coil housing in accordance with the invention when applied to a submarine cable of the.
twin core type.
In Fig. 1 the elongated core of magnetic material 10 is surrounded by an insulated winding 11 which is welded or otherwise securely connected to the conductor 12 as shown. The cable insu-- 'ment of the invention. 7
action between them and the loading coil hous- 5:;
ing; v
Fig. 2 represents an elevational view of a loading coil housing in accordance with the invention. The gaps 16 are staggered, as shown. This figure furthermore shows a method of in- 2 serting the loading coil housing into a cable of the twin conductor type.
The return conductor 18 may be terminated short of the loading coil and the sea water and armor wires relied upon the copper return conductor 18 may be connected to the protective housing in the manner shown. A material which is particularly suitable as a housing in accordance with this inventionis cop-- per or, copper-clad steel; on account of the corrosion resistance of copper when submerged in sea water, and its high conductivity.
,In order to permit easy application of the housing to the combination of coil and adjacent cable core, it is made in two parts, divided either longi' tudinally or transversely.
Inthe embodiment described the housing isfi divided longitudinally along line'AB (Fig. 2).1" For the purpose of preventing longitudinal or .transverse displacements of one half of the which fit into four correspondingslots 20 of the other half. Sufficient clamping action is exerted by, the armor to assure tight contact between the shell halves and to obviate the provision of special clamping means inthis particular embodi- I 3. A submarine cable including a'loading coil comprising a case and having an external mag netic field, said coil and case being adapted to minimize energy losses due to the flow of signaling currents in said coil, said coil comprising a core of magnetic material and a winding surjf rounding said core, the insulation and fabriccovering of the cable being continued over and surrounding said Winding, said case consisting of a material having a tensile strength higher than that of ordinary highly permeable magnetic iron and being split longitudinally into a plurality
US470648A 1930-07-25 1930-07-25 Submarine cable loading coil Expired - Lifetime US1924106A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US470648A US1924106A (en) 1930-07-25 1930-07-25 Submarine cable loading coil
GB18551/31A GB380848A (en) 1930-07-25 1931-06-26 Improvements relating to submarine cables
FR720168D FR720168A (en) 1930-07-25 1931-07-20 Protective sheaths for underwater charging coils

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US470648A US1924106A (en) 1930-07-25 1930-07-25 Submarine cable loading coil

Publications (1)

Publication Number Publication Date
US1924106A true US1924106A (en) 1933-08-29

Family

ID=23868441

Family Applications (1)

Application Number Title Priority Date Filing Date
US470648A Expired - Lifetime US1924106A (en) 1930-07-25 1930-07-25 Submarine cable loading coil

Country Status (3)

Country Link
US (1) US1924106A (en)
FR (1) FR720168A (en)
GB (1) GB380848A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL42995C (en) * 1935-07-17

Also Published As

Publication number Publication date
FR720168A (en) 1932-02-16
GB380848A (en) 1932-09-26

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