US3733216A - Method for impregnating stranded cable with waterproofing compound - Google Patents

Method for impregnating stranded cable with waterproofing compound Download PDF

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Publication number
US3733216A
US3733216A US00135105A US3733216DA US3733216A US 3733216 A US3733216 A US 3733216A US 00135105 A US00135105 A US 00135105A US 3733216D A US3733216D A US 3733216DA US 3733216 A US3733216 A US 3733216A
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US
United States
Prior art keywords
stranded cable
cable
compound
waterproofing compound
viscous drag
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
US00135105A
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English (en)
Inventor
I Goldman
C Heard
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
Western Electric Co Inc
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Filing date
Publication date
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
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Publication of US3733216A publication Critical patent/US3733216A/en
Assigned to AT & T TECHNOLOGIES, INC., reassignment AT & T TECHNOLOGIES, INC., CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE JAN. 3,1984 Assignors: WESTERN ELECTRIC COMPANY, INCORPORATED
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/32—Filling or coating with impervious material
    • H01B13/322—Filling or coating with impervious material the material being a liquid, jelly-like or viscous substance
    • H01B13/323—Filling or coating with impervious material the material being a liquid, jelly-like or viscous substance using a filling or coating head
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2210/00—Applications
    • F16N2210/34—Cables and wires

Definitions

  • Waterproofing compound at ambient or substantially ambient temperature, in the preferred embodiment, is continuously forced under pressure to flow through staged conduit surrounding stranded cable.
  • Compound fills interstitial spaces between adjacent conductors in cable and simultaneously exerts viscous drag force along the surface of the cable to propel, or otherwise control the movement of, the cable. Wiping die subsequently removes excess compound from surface of cable.
  • This invention relates, broadly speaking, to a method for impregnating with a compound an elongated element. More specifically, this invention relates to a method for continuously forcing a waterproofing compound, at ambient or substantially ambient temperature in the preferred embodiment, into the interstices of a continuously moving stranded cable.
  • waterproofing compound should be forced into all of the numerous interstices between adjacent conductors, thereby to fill the said interstices, thus to prevent the entry of water therein.
  • the greater the number of interstices between adjacent conductors the more difiicult it is to force the waterproofing compound into all the interstices, particularly those interstices remote from the surface of the stranded cable.
  • a typical stranded cable may have as many as 100 conductor pairs, with a very large number of interstices between adjacent conductors. It will be apparent that to fill such large number of interstices with waterproofing compound is a daunting task.
  • the heated waterproofing compound after application to the stranded cable, may retain significant heat for as long as hours, and such retained heat may adversely aifect filler materials conventionally employed in the waterproofing compound to enhance certain electrical properties thereof.
  • the waterproofing compound shrinks as it cools from elevated temperature to ambient temperature, and voids are created.
  • Another of the objects of this invention is to provide an improved method of continuously impregnating a stranded element with a compound.
  • a further object of this invention is to provide an improved method for continuously and effectively filling with a waterproofing compound at ambient or substantially ambient temperatures interstitial spaces between conductors of a continuously moving stranded cable.
  • FIG. 1 represents a partially diagrammatic view of a system for practicing the method of the present invention, showing in medial longitudinal section a preferred embodiment of the viscous drag apparatus through which a stranded cable is propelled and filled with waterproofing compound;
  • FIG. 2 represents a transverse section taken along the line 22 of FIG. 1.
  • a system for practicing the method of the present invention is seen as comprising viscous drag apparatus 1, through which stranded cable 2 is, in the preferred embodiment, propelled and filled with water-proofing compound 3, wiping die 4, pump 5 and supply tank 6.
  • Viscous drag apparatus 1 comprises hOusing 7 having axially aligned longitudinal bores 8 and 9 extending inwardly from the opposite ends thereof, the said bores 8 and 9 terminating .at partition Wall 10.
  • Bushing 11 is mounted through partition wall 10 on the same axis as longitudinal bores 8 and 9 and is adapted to slidably receive, with close clearance, stranded cable 2.
  • End closures 12 each with a bushing 13 axially aligned With the adjacent longitudinal bore 8 or 9 and adapted to slidably receive with close clearance stranded cable 2, are mounted to the ends of housing 7 within counterbores 14, and are suitably secured to said housing 7 against outward movement therefrom by suitable means, such as, for example, bolts 15 spaced around the peripheral portion of such end closures 12 and extending therethrough and threaded into the said housing 7.
  • stranded cable 2 extends through housing 7, and stranded cable 2 is adapted to pass along this path. Moreover, it will be seen that the diameters of longitudinal bores 8 and 9 are somewhat larger than the diameter of stranded cable 2.
  • the longitudinal axis of stranded cable 2 is aligned with the longittudinal axis of bores 8 and 9 and the spaces between bores 8 and 9 and the stranded cable 2 define chambers in which water proofing compound 3 acts, as hereinafter described, to propel stranded cable 2 and to fill the interstices therein.
  • Transverse bores 16 and 17 extend through housing 7 and communicate with the rear and forward ends respectively of longitudinal bore 8, with reference to the direction of movement of stranded cable 2 through viscous drag apparatus 1.
  • transverse bores 18 and 19 extend through housing 7 and communicate with the rear and forward ends respectively of longitudinal bore 9 with reference to the direction of movement of stranded cable 2 through viscous drag apparatus 1.
  • Conduit 20 communicates between the discharge of pump and transverse bore 16.
  • Conduit 21 communicates between transverse bore 17 and transverse bore 18.
  • Conduit 22 communicates between transverse bore 19 and supply tank 6.
  • Conduit 23 communicates between supply tank 6 and the intake of pump 5. Supply tank 6 is replenished, as required, with waterproofing compound 3 through conduit 24.
  • Pump 5 is adapted to draw waterproofing compound 3, at ambient or substantially ambient temperature in the preferred embodiment, from supply tank 6 and to force said compound 3, under pressures which may, for example, be 1000 p.s.i., through conduit 20 and transverse bore 16 to the rear of longitudinal bore 8.
  • Waterproofing compound 3 will travel from the rear to the forward end of longtudinal bore 8 (i.e., from right to left as viewed in FIG. 1) and will exit through transverse bore 17. While flowing through the chamber defined by the space between bore 8 and stranded cable 2, in an overall general direc tion which is parallel to the longitudinal axis of stranded cable 2, the pressurized waterproofing compound 3 will force its way into the interstices between adjacent conductors of the stranded cable 2.
  • the flowing waterproofing compound 3 will exert a viscous drag force along the surface of the stranded cable 2, which viscous drag force propels the stranded cable 2 toward the forward end of longitudinal bore 8.
  • the waterproofing compound 3 simultaneously :fills the interstices in the stranded cable 2 and propels the stranded cable 2.
  • the waterproofing compound 3 which exits from the forward end of longitudinal bore 8 enters the rear of longitudinal bore 9 through transverse bore 18 and flows toward the forward end of longitudinal bore 9, exiting through transverse bore 19.
  • the pressurized waterproofing compound 3 While flowing through the chamber defined by the space between longitudinal bore 9 and stranded cable 2, the pressurized waterproofing compound 3 will force its way into the interstices between adjacent conductors of the stranded cable 2 and, at the same time, the flowing waterproofing compound 3 will exert viscous drag force along the surface of the stranded cable 2 toward the forward end of longitudinal bore 9, which viscous drag force propels the stranded cable 2 toward the forward end of longitudinal bore 9.
  • Bushings 11 and 13 are designed to prevent escape of the pressurized waterproofing compounds 3 from the ends of the chamber respectively defined by longitudinal bores 8 and 9 and stranded cable 2.
  • each stage could be provided with its own pump 5 and supply tank 6.
  • stranded cable 2 is threaded through viscous drag apparatus 1 and wiping die 4.
  • Pump 5 is started, and waterproofing compound 3 is forced along the hereinbefore described path.
  • the viscous drag force of the flowing waterproofing compound 3 exerted along the surface of the stranded cable 2 draws the stranded cable 2 through the viscous drag apparatus 1, the interstices of the said stranded cable 2 being filled with the pressurized waterproofing compound 3 in the two stages specifically shown herein.
  • a suitable mechanism such as an elastomeric apertured diaphragm, not shown
  • the viscous drag force exerted by the waterproofing compound is employed to propel the stranded cable 2. It should be clearly understood that such viscous drag force may also be employed, in alternative embodiments, to control the movement of a stranded cable which is propelled by other means external to the viscous drag apparatus 1. Thus, such viscous drag force may be exerted on the stranded cable 2 in a direction opposed to the direction of movement of said stranded cable 2 thereby to retard such movement and thereby act as a brake. Conversely, such viscous drag force may be employed to augment the propulsion of stranded cable 2 by other means. Generally, then, the viscous drag force may be employed to propel stranded cable 2 or to control the movement of stranded cable 2.
  • Method for filling with material the interstices between adjacent strands of a stranded cable adapted to be moved through an upstream station and thereafter through a downstream station comprising:
  • Method for filling with material the interstices between adjacent strands of a stranded cable adapted to be moved through an upstream station and thereafter through a downstream station comprising:

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Insulated Conductors (AREA)
US00135105A 1971-04-19 1971-04-19 Method for impregnating stranded cable with waterproofing compound Expired - Lifetime US3733216A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13510571A 1971-04-19 1971-04-19

Publications (1)

Publication Number Publication Date
US3733216A true US3733216A (en) 1973-05-15

Family

ID=22466573

Family Applications (1)

Application Number Title Priority Date Filing Date
US00135105A Expired - Lifetime US3733216A (en) 1971-04-19 1971-04-19 Method for impregnating stranded cable with waterproofing compound

Country Status (14)

Country Link
US (1) US3733216A (de)
JP (1) JPS5342814B1 (de)
AU (1) AU463517B2 (de)
BE (1) BE782126A (de)
CA (1) CA953474A (de)
CH (1) CH542664A (de)
DE (1) DE2218118C3 (de)
ES (1) ES401862A1 (de)
FI (1) FI58229B (de)
FR (1) FR2136489A5 (de)
GB (1) GB1383849A (de)
IT (1) IT958753B (de)
NL (1) NL7205186A (de)
SE (1) SE384094B (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3876464A (en) * 1973-06-29 1975-04-08 Schlumberger Technology Corp Water and gas blocked logging cable
US3941905A (en) * 1971-10-12 1976-03-02 Pavena Ag Method of continuously impregnating a textile fiber arrangement with liquids
US3949097A (en) * 1973-08-25 1976-04-06 Mathias Stemmler Process and apparatus for coating food articles
US4022153A (en) * 1974-02-26 1977-05-10 Western Electric Company, Inc. Apparatus for sealing a cable core with waterproofing compound
US4028473A (en) * 1975-05-15 1977-06-07 Conti Armand R Hydraulic powered lubricator and sprayer
US4366770A (en) * 1977-06-09 1983-01-04 Siemens Aktiengesellschaft Apparatus for applying a water repellent substance into a cable core
US4411710A (en) * 1980-04-03 1983-10-25 The Fujikawa Cable Works, Limited Method for manufacturing a stranded conductor constituted of insulated strands
US4498558A (en) * 1982-03-02 1985-02-12 Dynalube Holdings Limited Cable lubricating device
US4856414A (en) * 1984-04-24 1989-08-15 Upravlenie po Montazhu, Demontazhu i Remontu Gornoshakhtnogo Oborudovania "Spetsshakhtomontazh" Karagandinskogo Proizvodstvennogo Obiedinenie po Dobyche Uglya "Karagandaugol" Viscoelastoplastic-sealant packed flexible power transmission cable for hydraulic actuator
US5015496A (en) * 1989-01-03 1991-05-14 Vining Industries, Inc. Process for applying a protective coating to handles
US5151306A (en) * 1990-11-26 1992-09-29 At&T Bell Laboratories Methods of coating elongated strand material
US5186279A (en) * 1991-03-08 1993-02-16 Ball Corporation Method and apparatus for lubricating tab stock
US5514417A (en) * 1994-08-04 1996-05-07 Schuller International, Inc. Method of and apparatus for coating a molded fibrous workpiece

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO164671C (no) * 1980-10-06 1995-04-03 Steinar Johansen Fremgangsmåte til smöring av ståltau.

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941905A (en) * 1971-10-12 1976-03-02 Pavena Ag Method of continuously impregnating a textile fiber arrangement with liquids
US3876464A (en) * 1973-06-29 1975-04-08 Schlumberger Technology Corp Water and gas blocked logging cable
US3949097A (en) * 1973-08-25 1976-04-06 Mathias Stemmler Process and apparatus for coating food articles
US4022153A (en) * 1974-02-26 1977-05-10 Western Electric Company, Inc. Apparatus for sealing a cable core with waterproofing compound
US4028473A (en) * 1975-05-15 1977-06-07 Conti Armand R Hydraulic powered lubricator and sprayer
US4366770A (en) * 1977-06-09 1983-01-04 Siemens Aktiengesellschaft Apparatus for applying a water repellent substance into a cable core
US4411710A (en) * 1980-04-03 1983-10-25 The Fujikawa Cable Works, Limited Method for manufacturing a stranded conductor constituted of insulated strands
US4498558A (en) * 1982-03-02 1985-02-12 Dynalube Holdings Limited Cable lubricating device
US4856414A (en) * 1984-04-24 1989-08-15 Upravlenie po Montazhu, Demontazhu i Remontu Gornoshakhtnogo Oborudovania "Spetsshakhtomontazh" Karagandinskogo Proizvodstvennogo Obiedinenie po Dobyche Uglya "Karagandaugol" Viscoelastoplastic-sealant packed flexible power transmission cable for hydraulic actuator
US5015496A (en) * 1989-01-03 1991-05-14 Vining Industries, Inc. Process for applying a protective coating to handles
US5151306A (en) * 1990-11-26 1992-09-29 At&T Bell Laboratories Methods of coating elongated strand material
AU637736B1 (en) * 1990-11-26 1993-06-03 American Telephone And Telegraph Company Methods of and apparatus for coating elongated strand material
US5186279A (en) * 1991-03-08 1993-02-16 Ball Corporation Method and apparatus for lubricating tab stock
US5514417A (en) * 1994-08-04 1996-05-07 Schuller International, Inc. Method of and apparatus for coating a molded fibrous workpiece

Also Published As

Publication number Publication date
CA953474A (en) 1974-08-27
BE782126A (fr) 1972-07-31
AU4111572A (en) 1973-10-18
GB1383849A (en) 1974-02-12
AU463517B2 (en) 1975-07-11
ES401862A1 (es) 1975-11-01
FR2136489A5 (de) 1972-12-22
SE384094B (sv) 1976-04-12
FI58229B (fi) 1980-08-29
DE2218118B2 (de) 1979-12-06
NL7205186A (de) 1972-10-23
IT958753B (it) 1973-10-30
DE2218118C3 (de) 1980-08-21
CH542664A (de) 1973-10-15
DE2218118A1 (de) 1972-10-26
JPS5342814B1 (de) 1978-11-15

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AS Assignment

Owner name: AT & T TECHNOLOGIES, INC.,

Free format text: CHANGE OF NAME;ASSIGNOR:WESTERN ELECTRIC COMPANY, INCORPORATED;REEL/FRAME:004251/0868

Effective date: 19831229