US3415052A - Synthetic plastic rope for automatic devices - Google Patents

Synthetic plastic rope for automatic devices Download PDF

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Publication number
US3415052A
US3415052A US542007A US54200766A US3415052A US 3415052 A US3415052 A US 3415052A US 542007 A US542007 A US 542007A US 54200766 A US54200766 A US 54200766A US 3415052 A US3415052 A US 3415052A
Authority
US
United States
Prior art keywords
rope
yarns
core
nylon
strands
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
US542007A
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English (en)
Inventor
Robert L Stanton
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.)
American Manufacturing Co Inc
Original Assignee
American Manufacturing Co 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 American Manufacturing Co Inc filed Critical American Manufacturing Co Inc
Priority to US542007A priority Critical patent/US3415052A/en
Priority to GB02021/67A priority patent/GB1184715A/en
Priority to DE19671685824 priority patent/DE1685824A1/de
Priority to FR102232A priority patent/FR1518394A/fr
Application granted granted Critical
Publication of US3415052A publication Critical patent/US3415052A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2036—Strands characterised by the use of different wires or filaments
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2041—Strands characterised by the materials used
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2083—Jackets or coverings
    • D07B2201/2089—Jackets or coverings comprising wrapped structures
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/2003—Thermoplastics
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/201—Polyolefins
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/2039—Polyesters
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/2046—Polyamides, e.g. nylons

Definitions

  • This invention relates to cordage and in particular to a synthetic plastic rope particularly intended for use with automatic reeling and unreeling devices such as automatic winches.
  • Wire mooring lines are subject to heavy corrosion effects, especially in salt water. Furthermore, wire lines have somewhat limited flexing life and can damage socalled fair leads and chocks in use. Wire lines are also characterized by a limited capability of resisting sudden shocks. Futhermore, their limited ability to absorb such shocks tends to transmit the shock to the winch itself with possible resultant wear or damage thereto. Wire lines are also considerably heavier per linear foot than non-wire types of cordage and therefore more men are needed to handle them. They usually have a considerably higher twist than non-wire ropes.
  • Wire lines also have the disadvantage that if they become fouled in the propeller of a ship, they can cause substantial damage. Furthermore, considerable effort and expense is usually required to disentangle them. Moreover, over a period of time, so-called fish hooks, i.e. splintered and curved fragments of the individual wires develop on the outer surface of the wire rope. This presents a safety hazard to all personnel handling the rope.
  • a synthetic plastic rope having a central core comprised of a plurality of yarns of a readily extensible plastic material having a high tensile strength.
  • This core lies substantially along the longitudinal axis of the rope.
  • Around it are disposed a plurality of strands of plastic materials.
  • a selected number (which may be all) of the strands include an outer layer which contains a high tensile strength, high melting point plastic material, such as nylon, as well as a lower melting point plastic material, such as polypropylene.
  • This outer layer surrounds a core of substantially untwisted, continuous filament yarns of a high tensile strength plastic such as nylon.
  • each of the outer strands comprised alternating yarns of plied nylon and plied polypropylene. These yarns surrounded a core of substantially untwisted continuous filaments of nylon.
  • the central core of the rope comprised a plurality of twisted 3-ply yarns of nylon.
  • FIGURE 1 is a side elevation view, partly in phantom, of the novel, non-wire rope constructed according to one form of this invention.
  • FIGURE 2 is an enlarged cross-sectional view of the rope, partly in phantom, shown in FIG. 1.
  • FIGURES 1 and 2 there is shown a rope generally indicated at the numeral 5 consisting of six outer strands indicated at the numerals 6 7, 8, 9*, 10, and 11. These strands are twisted (Z-twist) around a central core which is disposed substantially along the longitudinal axis of the rope.
  • the core 15 is primarily comprised of a plurality of twisted yarns of a highly extensible and strong plastic material such as nylon.
  • a highly extensible and strong plastic material such as nylon.
  • it may consist of a plurality of 3-ply yarns (Z-twist) each made from twisted singles yarns (S-twist).
  • Z-twist 3-ply yarns
  • S-twist twisted singles yarns
  • the 3-ply yarns are laid into a strand having an S-twist ratio within the range of about 3 to 4.
  • the twist ratios given are obtained by dividing the helical length of a single turn by the diameter of the compression tube or die used to form the strand, rope, yarn, etc. as the case may be. during fabrication.
  • the six strands 6-11 Disposed around the core 15 are the six strands 6-11 which can be substantially similar to one another. By having a higher number of outside strands than in conventional marine non-wire ropes, a more circular cross-section is obtained. This means that there will be shallower valleys between adjacent outer strands and thus there will be less abrasion.
  • all of the strands have a plurality of Z-twisted 3-ply outer yarns 20.
  • Each of the three yarns a, 20b, 200 in the 3- ply yarn is comprised of low-twist (S-twist) polypropylene monoifilarrents 19.
  • these polypropylene yarns 20 are alternated with a plurality of 3-plly Z-twisted nylon yarns 21 each consisting of yarns 21a, 21b, and 210 made of nylon multi-filaments having an S-twist.
  • These outer yarns 20 and 21 may be laid with a twist ratio in the range 3.5 to 4.5, a typical ratio being 4.2.
  • These nylon yarns 21 constitute a large portion of the outer surface of the entire rope 5 which is wound around or bears on various frictional surfaces.
  • nylon has a considerably higher melting point than polypropylene, it is able to resist the greater pressures and temperatures than polypropylene.
  • nylon has a much higher tenacity and is considerably more extensible than polypropylene.
  • polypropylene is considerably lighter than nylon so that the overall weight of the rope may be kept down by using it.
  • the nylon and polypropylene outer yarns of the outer strands may be combined in various other ways to give the desired result.
  • the yarns 20 and 21 need not be alternated 1:1 but can be disposed in a 1:2 or 2:1 or other ratio.
  • Another possibility is to form the yarns 21 with an outer layer of nylon and inner yarns of polypropylene.
  • Still another is to make each or selected ones of the outer yarns of the strands with interspersed nylon and polypropylene components.
  • any other relatively high melting point plastic material such as a polyester may be used instead of nylon.
  • polyethylene yarns may be used instead of or in combination with the polypropylene yarns, although polyethylenes melting point is even lower than that of polypropylene.
  • outer yarns 20 and 21 of the outer strands Surrounded by the outer yarns 20 and 21 of the outer strands are a plurality of inner, essentially untwisted, substantially parallel, continuous nylon multi-filaments, for example. These untwisted filaments are fed from spools of such yarns through a compression tube. The 3-ply nylon multi-filaments 21 and the 3-ply polypropylene monofilaments 20 are then applied together with the compressed core filaments through another compression tube to the stranding machine which twists them into the final strand.
  • the novel rope described herein has been found to have excellent strength characteristics.
  • a rope made according to the teachings herein and having a cross-sectional diameter of about 2.15" successfully replaced a 1% diameter wire rope without the disadvantages of the latter enumerated above.
  • the central rope core can be made primarily of compressed, essentially untwisted nylon or polyester multi-filaments.
  • a rope comprising:
  • an outer layer which includes a first plurality of yarns of a synthetic plastic material having a high tensile strength and also includes a second plurality of yarns of a synthetic plastic material having a lower melting point than said first plurality of yarns,
  • a strand core located inwardly of said outer layer (i), said strand core comprising a plurality of substantially untwisted filaments of a synthetic plastic material having a high tensile strength.
  • each of said strand cores consists primarily of said substantially untwisted synthetic plastic filaments.
  • said synthetic plastic material in said outer layer having said lower melting point is from the class of polyolefins of propylene and ethylene.
  • a rope comprising:
  • a strand core disposed inwardly of said outer layer
  • said strand core consisting principally of a plurality of substantially untwisted filaments of a synthetic plastic material having a high tensile strength.

Landscapes

  • Ropes Or Cables (AREA)
US542007A 1966-04-12 1966-04-12 Synthetic plastic rope for automatic devices Expired - Lifetime US3415052A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US542007A US3415052A (en) 1966-04-12 1966-04-12 Synthetic plastic rope for automatic devices
GB02021/67A GB1184715A (en) 1966-04-12 1967-03-14 Ropes of Synthetic Plastics Material
DE19671685824 DE1685824A1 (de) 1966-04-12 1967-04-10 Seil aus Kunststoff
FR102232A FR1518394A (fr) 1966-04-12 1967-04-11 Cordage ou câble en matière synthétique plastique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US542007A US3415052A (en) 1966-04-12 1966-04-12 Synthetic plastic rope for automatic devices

Publications (1)

Publication Number Publication Date
US3415052A true US3415052A (en) 1968-12-10

Family

ID=24161968

Family Applications (1)

Application Number Title Priority Date Filing Date
US542007A Expired - Lifetime US3415052A (en) 1966-04-12 1966-04-12 Synthetic plastic rope for automatic devices

Country Status (3)

Country Link
US (1) US3415052A (de)
DE (1) DE1685824A1 (de)
GB (1) GB1184715A (de)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4832102A (en) * 1987-06-15 1989-05-23 The Goodyear Tire & Rubber Company Pneumatic tires
US5199253A (en) * 1990-07-16 1993-04-06 American Manufacturing Company, Inc. Nylon rope having superior friction and wearing resistance
US5941198A (en) * 1998-04-20 1999-08-24 Equibrand Corporation Cattle roping lariat
US6119632A (en) * 1998-04-20 2000-09-19 Equibrand Corporation Lariat, lariat rope body and method
US6142104A (en) * 1998-04-20 2000-11-07 Equibrand Corporation Lariat rope body
EP1094244A1 (de) * 1999-10-21 2001-04-25 Inventio Ag Seilumlenkung und dafür geeignetes Kunstfaserseil sowie deren Verwendung
US6619240B2 (en) * 1998-04-20 2003-09-16 Equibrand Corporation Lariat, lariat rope body, method and apparatus
US20030226347A1 (en) * 2002-01-30 2003-12-11 Rory Smith Synthetic fiber rope for an elevator
US20060213175A1 (en) * 2002-01-30 2006-09-28 Smith Rory S Synthetic fiber rope for an elevator
US7168231B1 (en) * 2002-09-05 2007-01-30 Samson Rope Technologies High temperature resistant rope systems and methods
EP2130969A3 (de) * 2008-06-04 2010-03-10 Samson Rope Technologies Synthetisches Seil, das aus unterschiedlichen Garnen hergestellt wird
CN101899791A (zh) * 2010-07-16 2010-12-01 扬州巨神绳缆有限公司 一种复合绳缆
US8689534B1 (en) 2013-03-06 2014-04-08 Samson Rope Technologies Segmented synthetic rope structures, systems, and methods
US8707668B2 (en) 2003-12-16 2014-04-29 Samson Rope Technologies Wrapped yarns for use in ropes having predetermined surface characteristics
EP2423357A3 (de) * 2005-02-11 2014-06-18 Gore Enterprise Holdings, Inc. Fluorpolymerfaserkompositbündel
US20140178615A1 (en) * 2012-11-12 2014-06-26 David Andrew Broadway Ribbed woven material
US9003757B2 (en) 2012-09-12 2015-04-14 Samson Rope Technologies Rope systems and methods for use as a round sling
US9074318B2 (en) 2005-09-15 2015-07-07 Samson Rope Technologies Rope structure with improved bending fatigue and abrasion resistance characteristics
US9334587B2 (en) 2005-02-11 2016-05-10 W. L. Gore & Associates, Inc. Fluoropolymer fiber composite bundle
US9573661B1 (en) 2015-07-16 2017-02-21 Samson Rope Technologies Systems and methods for controlling recoil of rope under failure conditions
US10377607B2 (en) 2016-04-30 2019-08-13 Samson Rope Technologies Rope systems and methods for use as a round sling

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3026669A (en) * 1960-08-16 1962-03-27 American Mfg Company Inc Synthetic rope structure
US3111001A (en) * 1958-08-14 1963-11-19 Bayer Ag Stranded rope of endless fully synthetic plastic filaments
US3145525A (en) * 1962-11-23 1964-08-25 Wall Rope Works Inc Ropes of synthetic fibers
US3197953A (en) * 1963-06-03 1965-08-03 Grace W R & Co Polypropylene rope
US3274765A (en) * 1964-07-15 1966-09-27 Bayer Ag Stranded rope comprising endless, synthetic plastic threads

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111001A (en) * 1958-08-14 1963-11-19 Bayer Ag Stranded rope of endless fully synthetic plastic filaments
US3026669A (en) * 1960-08-16 1962-03-27 American Mfg Company Inc Synthetic rope structure
US3145525A (en) * 1962-11-23 1964-08-25 Wall Rope Works Inc Ropes of synthetic fibers
US3197953A (en) * 1963-06-03 1965-08-03 Grace W R & Co Polypropylene rope
US3274765A (en) * 1964-07-15 1966-09-27 Bayer Ag Stranded rope comprising endless, synthetic plastic threads

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4832102A (en) * 1987-06-15 1989-05-23 The Goodyear Tire & Rubber Company Pneumatic tires
US5199253A (en) * 1990-07-16 1993-04-06 American Manufacturing Company, Inc. Nylon rope having superior friction and wearing resistance
US5333442A (en) * 1990-07-16 1994-08-02 American Manufacturing Company, Inc. Method for producing a rope having superior friction and wearing resistance
US5941198A (en) * 1998-04-20 1999-08-24 Equibrand Corporation Cattle roping lariat
US6119632A (en) * 1998-04-20 2000-09-19 Equibrand Corporation Lariat, lariat rope body and method
US6142104A (en) * 1998-04-20 2000-11-07 Equibrand Corporation Lariat rope body
US6619240B2 (en) * 1998-04-20 2003-09-16 Equibrand Corporation Lariat, lariat rope body, method and apparatus
EP1094244A1 (de) * 1999-10-21 2001-04-25 Inventio Ag Seilumlenkung und dafür geeignetes Kunstfaserseil sowie deren Verwendung
AU764669B2 (en) * 1999-10-21 2003-08-28 Inventio Ag Rope deflection and suitable synthetic fiber rope and their use
US7032371B2 (en) * 2002-01-30 2006-04-25 Thyssen Elevator Capital Corp. Synthetic fiber rope for an elevator
US20060213175A1 (en) * 2002-01-30 2006-09-28 Smith Rory S Synthetic fiber rope for an elevator
US20030226347A1 (en) * 2002-01-30 2003-12-11 Rory Smith Synthetic fiber rope for an elevator
US7168231B1 (en) * 2002-09-05 2007-01-30 Samson Rope Technologies High temperature resistant rope systems and methods
US7437869B1 (en) 2002-09-05 2008-10-21 Samson Rope Technologies High temperature resistant rope systems and methods
US7743596B1 (en) 2002-09-05 2010-06-29 Samson Rope Technologies High temperature resistant rope systems and methods
US9404203B2 (en) 2003-12-16 2016-08-02 Samson Rope Technologies Wrapped yarns for use in ropes having predetermined surface characteristics
US8707668B2 (en) 2003-12-16 2014-04-29 Samson Rope Technologies Wrapped yarns for use in ropes having predetermined surface characteristics
US10329698B2 (en) 2005-02-11 2019-06-25 W. L. Gore & Associates, Inc. Fluoropolymer fiber composite bundle
EP2423357A3 (de) * 2005-02-11 2014-06-18 Gore Enterprise Holdings, Inc. Fluorpolymerfaserkompositbündel
US9334587B2 (en) 2005-02-11 2016-05-10 W. L. Gore & Associates, Inc. Fluoropolymer fiber composite bundle
US9074318B2 (en) 2005-09-15 2015-07-07 Samson Rope Technologies Rope structure with improved bending fatigue and abrasion resistance characteristics
US9982386B2 (en) 2005-09-15 2018-05-29 Samson Rope Technologies Rope structure with improved bending fatigue and abrasion resistance characteristics
EP2130969A3 (de) * 2008-06-04 2010-03-10 Samson Rope Technologies Synthetisches Seil, das aus unterschiedlichen Garnen hergestellt wird
US8511053B2 (en) 2008-06-04 2013-08-20 Samson Rope Technologies Synthetic rope formed of blend fibers
CN101899791A (zh) * 2010-07-16 2010-12-01 扬州巨神绳缆有限公司 一种复合绳缆
US9003757B2 (en) 2012-09-12 2015-04-14 Samson Rope Technologies Rope systems and methods for use as a round sling
US20140178615A1 (en) * 2012-11-12 2014-06-26 David Andrew Broadway Ribbed woven material
US9261167B2 (en) 2013-03-06 2016-02-16 Samson Rope Technologies Segmented synthetic rope structures, systems, and methods
US8689534B1 (en) 2013-03-06 2014-04-08 Samson Rope Technologies Segmented synthetic rope structures, systems, and methods
US9573661B1 (en) 2015-07-16 2017-02-21 Samson Rope Technologies Systems and methods for controlling recoil of rope under failure conditions
US10377607B2 (en) 2016-04-30 2019-08-13 Samson Rope Technologies Rope systems and methods for use as a round sling

Also Published As

Publication number Publication date
DE1685824A1 (de) 1971-04-29
GB1184715A (en) 1970-03-18

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