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Número de publicaciónUS2538019 A
Tipo de publicaciónConcesión
Fecha de publicación16 Ene 1951
Fecha de presentación7 Ene 1947
Fecha de prioridad29 Oct 1945
Número de publicaciónUS 2538019 A, US 2538019A, US-A-2538019, US2538019 A, US2538019A
InventoresCharles Lee Edwin
Cesionario originalInt Standard Electric Corp
Exportar citaBiBTeX, EndNote, RefMan
Enlaces externos: USPTO, Cesión de USPTO, Espacenet
Method of making multicore electrical conductors
US 2538019 A
Resumen  disponible en
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Jan. 16, 1951 E. c. LEE 2,538,019

METHOD OF MAKING MULTICORE ELECTRICAL CONDUCTORS Filed Jan. 7, 1947 Inventor [aw/Al (HA/H E: LEE

Patented Jan. 16,1951

METHOD OF MAKING MULTICORE ELECTRICAL CONDUCT'ORS' Edwin Charles Lee, London, England, assignor to International Standard Electric Corporation, New York, N. Y., a corporation of Delaware Application January 7, 1947, Serial No. 720,562 'In Great Britain October 29, 1945 Section 1, Public Law 690, August 8, 1946 Patent expires October 29, 1965 1 Claim. (Cl. 154 2.24)

This invention relates to electric cables and more particularly to multi-core electric power cables.

Paper, whether um'mprcgnated or impregnated with an insulating compound is a normal form of insulation in electric cables. The usual method of applying this form of insulation is to lap the required numbers of papers in the form of narrow strips around the conductors to form separate cores. Additional layers of paper may then be applied around the cores after they have been laid up in cable form. For high voltage cables,'say 11,000 volts and over, the papers must be applied with precision to avoid the formation of spaces within the dielectric, but for lower voltages the thickness of insulation is designed for mechanical rather than electrical considerations.

The' application of the paper insulation represents an appreciable proportion of the total cost of making the cable. In a four core cable, for example, there are five distinct lapping operations necessitating five different passes through the lapping machine. Furthermore the process is comparatively slow owing to the narrow widths of the paper tapes.

An object of the present invention is to cheapen the process of making a power cable by eliminating the lapping operations on the individual cores. 7

According to one feature of the present invention we provide a multi-core electric power cable in which the several cores are insulated from one another by means of a member extending along the length of the cable the cross section of which comprises a plurality of arms radiating from a centre, the separate conductor cores being laid between the arms.

The above-mentioned member may be formed so that the portions whose cross sections constitute the arms are helical so that the conductor cores are laid in helices, as must be the case if 2 Preferably also the flexible arms are 'made of suflicient length to enable them to be folded around the separate conductors.

The invention will be better understood from the following description of one embodiment, as applied to a four core cable, taken in conjunction with the accompanying drawings in which: Fig. 1 shows a cross section of an electric power cable in accordance With the invention.

Figs. 2, 3 and 4 show successive steps in the formation of the insulation of the cable of Fig. 1. Fig. 5 shows the form in which the insulating member of Figs. 2 to 4 may be stored.

Referring to the drawings, an electric power cable is formed with a member I having four arms radiating from the centre, so as, in the case of the four core cable illustrated, to have a cruciform cross section. This central member is formed from a plurality of superposed paper strips in the manner shown in Figs. 2 to 4. Fig. 2 shows in cross section a plurality of paper strips laid one above the other. The width 3 of the strips is sumcient to enable the formation of the arms 2 of Fig. 1. The length at right angles to the plane of the paper may be sufiicientto produce a manufacturing length of cable without jointing although there is no objection to making a joint by over-lapping the papers. The

, papers are folded lengthwise as shown in Fig. 3

the cable is to be flexible but preferably the member is of flexible material so that the process of laying up the separate conductors to form the,

included in the laying up of the conductors d to form the cable in which case the guides and supply rolls for the paper strips would be attached to the cable making machine. The paper member shown in Fig. 4 is then fed along the centre line of the machine and the copper conductors 4 guided between the limbs. The portions of the arms 2 extending beyond the conductors are then folded around the conductors, as shown in Fig. 1 by passage through a die. Fillers 5, in the form of extended folded strips of paper or jute string, folded into the cross section shown in Fig. 1 are guided into position and the assembly passed through a second die to form an approximately circular section. The effect of the fillers is to complete the turnover of the extremities of the arms 2 and to fill up the gaps at the extremities of the radial portions of these arms. Finally, on leaving the second die, the outer or belt papers 6 are applied by the usual rotating head.

During the laying up operation the conductors 4 are twisted according to normal practice and preferably are pretwisted during the stranding 3 of the individual wires, again according to normal practice.

If desired a central filler I may be inserted during the manufacture of the cable.

After the application of the belt insulation 6 a lead sheath (not shown) is applied by extrusion in the normal manner.

If desired the central member I after being formed into the shape shown in Fig. 4 may be stored, before being used in the manufacture of the cable, by being flattened into the shape shown in Fig. 5 and coiled on a drum, which drum is then mounted whenrequire'd on the laying up machine.

It is clear that the invention can readily :be applied to the manufacture of a cable of any number of cores.

What is claimed is:

A process for producing a multi-core electric power cable comprising the steps of superimposing a plurality of insulating paper strips in stacked relation, folding said stacked strips as a continuous unit into cruciform shape, laying a. plurality of conductors between the arms of said cruciform, folding each arm to completely encircle a conductor core, inserting a filler at the center from which the arms radiate and inserting peripheral fillers in the openings between the end of each arm and the nextadjacentarm.

EDWIN CHARLES LEE.

REFERENCES CITED The following references are of record in the file of this patent:

v UNITED STATES PATENTS Number Name Date 71,389,143 Kempton Aug. 30, 1921 1,663,878 Emanueli Mar. 27, 1928 2,125,869 Atkinson Aug. 9, 1938 2,264,439 Guyatt Dec, 2, 1941 FOREIGN PATENTS Number Country Date 22,923 Great Britain Aug. 12, 1893 of1892 342,606 Great Britain Feb. 5, 1931

Citas de patentes
Patente citada Fecha de presentación Fecha de publicación Solicitante Título
US1389143 *25 Ene 191930 Ago 1921Westinghouse Electric & Mfg CoReinforced tube and method of making it
US1663878 *2 Sep 192527 Mar 1928 Luigi emanueli
US2125869 *18 Jul 19339 Ago 1938Gen Cable CorpElectrical conductor
US2264439 *12 Jul 19402 Dic 1941American Steel & Wire CoNonmetallic sheathed cable
GB342606A * Título no disponible
GB189322923A * Título no disponible
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US2787653 *24 Feb 19532 Abr 1957Anaconda Wire & Cable CoElectric cables
US3420720 *8 Nov 19637 Ene 1969Whitney Blake CoMethod of making jacketed multi-conduction electrical cable
US3614290 *25 Mar 197019 Oct 1971Anaconda Wire & Cable CoPipe-type cable comprising aluminum conductors with high-elastic-modulus tensile strands
US3819443 *15 Ene 197325 Jun 1974Sun Chemical CorpMethod for making multifinned shielding tapes
US5952613 *14 Nov 199514 Sep 1999Abb Industry OyConnector for connecting a three-phase cable and manufacturing method of the connector
US6288340 *10 Jun 199911 Sep 2001NexansCable for transmitting information and method of manufacturing it
US6365837 *11 Abr 20012 Abr 2002James D. MitchemNon-tangling line
US6379175 *25 Mar 199930 Abr 2002Nordx/Cdt. Inc.Fixture for controlling the trajectory of wires to reduce crosstalk
US659694421 Mar 200022 Jul 2003Cable Design Technologies, Inc.Enhanced data cable with cross-twist cabled core profile
US678769716 Ene 20017 Sep 2004Belden Wire & Cable CompanyCable channel filler with imbedded shield and cable containing the same
US681240828 May 20032 Nov 2004Cable Design Technologies, Inc.Multi-pair data cable with configurable core filling and pair separation
US685588913 Ago 200115 Feb 2005Belden Wire & Cable CompanyCable separator spline
US69985373 Ene 200314 Feb 2006Belden Cdt Networking, Inc.Multi-pair data cable with configurable core filling and pair separation
US701539727 May 200321 Mar 2006Belden Cdt Networking, Inc.Multi-pair communication cable using different twist lay lengths and pair proximity control
US703032128 Jul 200418 Abr 2006Belden Cdt Networking, Inc.Skew adjusted data cable
US706427716 Dic 200420 Jun 2006General Cable Technology CorporationReduced alien crosstalk electrical cable
US71094249 Jul 200419 Sep 2006Panduit Corp.Alien crosstalk suppression with enhanced patch cord
US715764416 Dic 20042 Ene 2007General Cable Technology CorporationReduced alien crosstalk electrical cable with filler element
US717999913 Feb 200620 Feb 2007Belden Technologies, Inc.Multi-pair data cable with configurable core filling and pair separation
US720868328 Ene 200524 Abr 2007Belden Technologies, Inc.Data cable for mechanically dynamic environments
US723888524 Mar 20053 Jul 2007Panduit Corp.Reduced alien crosstalk electrical cable with filler element
US72448937 Jun 200417 Jul 2007Belden Technologies, Inc.Cable including non-flammable micro-particles
US72713431 Feb 200618 Sep 2007Belden Technologies, Inc.Skew adjusted data cable
US731716312 Oct 20058 Ene 2008General Cable Technology Corp.Reduced alien crosstalk electrical cable with filler element
US731716420 Nov 20068 Ene 2008General Cable Technology Corp.Reduced alien crosstalk electrical cable with filler element
US733911618 Ene 20014 Mar 2008Belden Technology, Inc.High performance data cable
US761228919 Dic 20073 Nov 2009General Cable Technology CorporationReduced alien crosstalk electrical cable with filler element
US766306123 Oct 200716 Feb 2010Belden Technologies, Inc.High performance data cable
US76964388 Ene 200913 Abr 2010Belden Technologies, Inc.Data cable with cross-twist cabled core profile
US772822831 Ago 20061 Jun 2010Panduit Corp.Alien crosstalk suppression with enhanced patchcord
US7834271 *28 Abr 200916 Nov 2010Tyco Electronics CorporationCabling having shielding separators
US789787519 Nov 20081 Mar 2011Belden Inc.Separator spline and cables using same
US796479724 Feb 201021 Jun 2011Belden Inc.Data cable with striated jacket
US803057130 Jun 20104 Oct 2011Belden Inc.Web for separating conductors in a communication cable
US831910412 Feb 201027 Nov 2012General Cable Technologies CorporationSeparator for communication cable with shaped ends
US8426732 *12 Feb 201023 Abr 2013Superior Essex Communications LpCommunication cable with improved member for positioning signal conductors
US87293945 May 200320 May 2014Belden Inc.Enhanced data cable with cross-twist cabled core profile
US901853025 Jul 201228 Abr 2015General Cable Technologies CorporationSeparator for communication cable with shaped ends
US936393515 Mar 20137 Jun 2016Superior Essex Communications LpSubdivided separation fillers for use in cables
US960123924 Jul 201521 Mar 2017Panduit Corp.Alien crosstalk suppression with enhanced patch cord
US974147010 Mar 201722 Ago 2017Superior Essex International LPCommunication cables incorporating separators with longitudinally spaced projections
US20010001426 *18 Ene 200124 May 2001Gareis Galen MarkHigh performance data cable
US20030132021 *13 Ago 200117 Jul 2003Gareis Galen M.Cable separator spline
US20030217863 *3 Ene 200327 Nov 2003Cable Design Technologies, Inc.Multi-pair data cable with configurable core filling and pair separation
US20040035603 *28 May 200326 Feb 2004William ClarkMulti-pair data cable with configurable core filling and pair separation
US20040149484 *27 May 20035 Ago 2004William ClarkMulti-pair communication cable using different twist lay lengths and pair proximity control
US20050023028 *7 Jun 20043 Feb 2005Clark William T.Cable including non-flammable micro-particles
US20050029007 *9 Jul 200410 Feb 2005Nordin Ronald A.Alien crosstalk suppression with enhanced patch cord
US20050056454 *28 Jul 200417 Mar 2005Clark William T.Skew adjusted data cable
US20060124342 *1 Feb 200615 Jun 2006Clark William TSkew adjusted data cable
US20060124343 *7 Feb 200615 Jun 2006Belden Cdt Networking, Inc.Multi-pair communication cable using different twist lay lengths and pair proximity control
US20060124344 *13 Feb 200615 Jun 2006Belden Cdt Networking, Inc.Multi-pair data cable with configurable core filling and pair separation
US20060131054 *16 Dic 200422 Jun 2006Roger LiqueReduced alien crosstalk electrical cable
US20060131055 *16 Dic 200422 Jun 2006Roger LiqueReduced alien crosstalk electrical cable with filler element
US20060131057 *24 Mar 200522 Jun 2006Roger LiqueReduced alien crosstalk electrical cable with filler element
US20060131058 *12 Oct 200522 Jun 2006Roger LiqueReduced alien crosstalk electrical cable with filler element
US20060169478 *28 Ene 20053 Ago 2006Cable Design Technologies, Inc.Data cable for mechanically dynamic environments
US20070004268 *31 Ago 20064 Ene 2007Panduit Corp.Alien crosstalk suppression with enhanced patchcord
US20080041609 *23 Oct 200721 Feb 2008Gareis Galen MHigh performance data cable
US20080093106 *19 Dic 200724 Abr 2008Roger LiqueReduced alien crosstalk electrical cable with filler element
US20090120664 *8 Ene 200914 May 2009Belden Technologies, Inc.Data cable with cross-twist cabled core profile
US20090173514 *19 Nov 20089 Jul 2009Gareis Galen MSeparator Spline and Cables Using Same
US20090272571 *28 Abr 20095 Nov 2009Tyco Electronics CorporationCabling having shielding separators
US20100147550 *24 Feb 201017 Jun 2010Belden Technologies, Inc.Data cable with striated jacket
US20100200269 *12 Feb 201012 Ago 2010General Cable Technologies CorporationSeparator for communication cable with shaped ends
US20100218973 *28 Ene 20102 Sep 2010Camp Ii David PSeparator for communication cable with geometric features
US20100263907 *30 Jun 201021 Oct 2010Belden Technologies, Inc.Web for separating conductors in a communication cable
US20110155419 *5 May 200330 Jun 2011Cable Design Technologies Inc. dba Mohawk/CDTEnhanced Data cable with cross-twist cabled core profile
US20120267144 *28 Mar 201225 Oct 2012Bernhart Allen GebsPlenum Data Cable
EP1107262A2 *21 Nov 200013 Jun 2001Alcatel Alsthom Compagnie Generale D'electriciteLow-crosstalk data cable and method of manufacturing
EP1107262A3 *21 Nov 200017 Abr 2002Alcatel Alsthom Compagnie Generale D'electriciteLow-crosstalk data cable and method of manufacturing
WO2001054142A1 *16 Ene 200126 Jul 2001Belden Wire & Cable CompanyA cable channel filler with imbedded shield and cable containing the same
Clasificaciones
Clasificación de EE.UU.156/54, 174/113.00C
Clasificación internacionalH02G5/00
Clasificación cooperativaH02G5/00
Clasificación europeaH02G5/00