US3010275A - Ropes from monofilaments and process for the production thereof - Google Patents

Ropes from monofilaments and process for the production thereof Download PDF

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Publication number
US3010275A
US3010275A US52118A US5211860A US3010275A US 3010275 A US3010275 A US 3010275A US 52118 A US52118 A US 52118A US 5211860 A US5211860 A US 5211860A US 3010275 A US3010275 A US 3010275A
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US
United States
Prior art keywords
monofilaments
strands
rope
ropes
strand
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
US52118A
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English (en)
Inventor
Hartmann Karl
Schmittmann Hans
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.)
Bayer AG
Original Assignee
Bayer AG
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Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
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Publication of US3010275A publication Critical patent/US3010275A/en
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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
    • D07B1/04—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics with a core of fibres or filaments arranged parallel to the centre line
    • 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
    • D07B2201/10—Rope or cable structures
    • D07B2201/1012—Rope or cable structures characterised by their internal structure
    • D07B2201/102—Rope or cable structures characterised by their internal structure including a core
    • 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
    • D07B2201/2023—Strands with core
    • 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
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2055—Cores characterised by their structure comprising filaments or fibers
    • 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
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2055—Cores characterised by their structure comprising filaments or fibers
    • D07B2201/2056—Cores characterised by their structure comprising filaments or fibers arranged parallel to the axis
    • 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
    • D07B2201/2071—Spacers
    • D07B2201/2073—Spacers in circumferencial direction
    • 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

Definitions

  • FIGURE 1 is a schematic view partially in section illustrating a stand producing apparatus in accordance with the invention
  • FIGURE 2 is a schematic sectional view of a strand formed with the apparatus of FIGURE 1.
  • FIGURE 3 is a schematic view partially in section of an apparatus for producing a rope or cable in accordance with the invention using strands formed by the apparatus of FIGURE 1, and
  • FIGURE 4 is a sectional view of a finished-rope or cable produced with the apparatus of FIGURE 3.
  • an excellent process for the production of ropes, cables, and the like from continuous man-made or synthetic monofilaments may be provided which com-- prises twisting a plurality of individual, outer monofilafilarnents to form a strand, said outer monofilamen-ts being maintained untwisted with respect to their individual axes during said twisting.
  • a plurality of such strands are twisted asouter strands about a central core of one such strand maintained in untwisted relation as inner strand to form the finished rope or cable.
  • the outer strands are twisted about their individual axes as well as about the central core inner strand in the second step.
  • the individual outer monofilaments twisted about the central core consisting of untwisted inner monofilaments are in fact maintained in untwisted condition with respect to their individual axes.
  • each outer strand is twisted about a seventh central core inner strand to form the finished rope or cable.
  • the central core of untwisted inner monofilaments in each strand is preferably provided as a plurality of parallel plies of continuous single monofilaments, maintained in untwisted condition.
  • the results obtained in accordance with the production of the strands in accordance with the first step are such that the single monofil-aments during their conversion into strands are not themselves torsioned by twisting about their individual axes and therefore no corresponding diminution of tensile strength occurs.
  • the second step by virtue of the positive torsion applied to the plurality of strands, due to the twisting of the strands about their individual axes as well as'about the central core, inner strand, during the laying of the strands into rope form, these strands are accurately superimposed upon one another without the formation of spaces or voids. Consequently, the strands uniformly take up the loads applied to them as a composite unit.
  • Ropes produced in accordance with the invention as described herein are subjected to an average total shortening of the basic material of about 20% as opposed to the 33 /3 shortening resulting from conventional methods used up to the present involving the twisting and laying of common types of filaments into strands and ropes.
  • the stress upon the material during the rope formation in accordance with the process of the invention is essentially less than that which occurs in existing conventional processes.
  • the core and inner layers of the strands themselves in the ropes produced in accordance with the invention are preferably composed of parallel plies of continuous single monofilaments about which the outer monofilaments are laid.
  • one of the following rope constructions is used: 7.x 7; or 7 x19; or 7 X 37.
  • the tensile strength was measof a plurality of individual monofilaments ured tobe about 83% of that of the initial, untwisted monofilaments.
  • FIGURE 1 shows schematically the cross section of a known machine used in the method of wireropemanufacture.
  • a tube 2 rotates in the direction of arrow 3.
  • a plurality'of axles 4 are provided rigidly fixed with respect to rotating tube 2.
  • Axles 4 are provided with spools 5 carrying monofilaments 7.
  • Spools 5 are rotatable on axles 4 in the direction shown by arrow 8, i.e. in a counter-clockwise direction when spool 5 is viewed from the side looking toward the left of FIGURE 1.
  • a core 6 composed of a great number of capillary monofilaments is continuously drawn off in the direction towards the observer.
  • the core preferably consists of a plurality of parallel plies of individual monofilaments emanating from within hollow axis 1 in untwisted condition.
  • outer monofilaments 7 are drawn off from the various spools 5 in thesame directionof movement as core 6. While FIGURE 1 only shows one spool carrying a continuous monofilament, it will be 4 instance, outer monofilaments 7, although twisted about the central core 6, are maintained untwisted with respect to their individual axes. (See FIGURE 2.)
  • each of the spools 5 is to be provided a with a continuous monofilament.
  • Outer monofilaments 7 are disposed about core 6 in such a manner that the same wrap around core 6 surrounding the same.
  • tube 2 rotates in the direction of arrow 3, causing the simultaneous movement of spools 5 relative to axis 1 and core 6.
  • outer monofilaments 7 are laid spirally about core 6 without the individual outer monofilaments 7 becoming twisted in themselvesfie. monofilaments 7 are maintained untwisted with respect to their individual axes.
  • a strand is formed as shown in FIG- URE 2 which is substantially .free from twist, merely having spirally arranged outer monofilaments 7 disposed along the continuous length of an inner. core 6 of untwisted monofilaments, preferably of capillary dimensions, or at least of much smaller diameter as compared with the diameter of monofilaments 7.
  • the finished strands produced in accordance with the foregoing operation therefore, include a core having a cover of outer monofilaments, the same being untwisted with respect to their individual axes.
  • an apparatus including a rotatable tube '9 movable in the direction of arrow 3 having a plurality of axles 10 revolvably seated on tube 9 by means of transverse axes 12.
  • Spools 11 are rotatably mounted on axles 10 for rotation in the direction of arrow 8 in a similar manner to that of FIGURE 1.
  • a planetary gear-(not shown) is used for maintaining the rotational movement of axes 12 during the simultaneous rotation movement of tube 9.
  • the strand 16 which has been formed in accordance with the method of the invention by theapparatus of FIGURE 1 represents the inner strand about which is twisted the plurality of outer strands passing around core 16 during its outward movement from hollow shaft 15, the, outer strands being fed from spools 11 on which they are disposed.
  • the finishedrope or cable is shown in cross section in FIGURE 4 wherein a plurality of outer strands are twisted around a center or inner strand.
  • each strand is composed 7 twisted about a centercore 6 of individual capillary filaments.
  • the apparatus'of FIGURE 3 works in accordance: with the method designated as the conventional hemp rope manufacturing method.
  • the present invention therefore, combines the operations, in order, of the wire'rope method for the production of strands and the hemp .rope method for the production of the finished rope from the strands. Due to the self-rotation in the direction of the anrow 13 or 14, the strand twist resulting from the use of the apparatus in FIGURE 3 provides for the shortening of the strand.
  • the number of revolutions of the tube 9 and the individual spools 11 in the direction of the arrow 13 or the arrow 14 are accordingly conveniently correlated to one another such that the shortened length which occurs due to the twisting of theindividual strands is equalized with the length of twist of the rope. twisted together from the individual strands.
  • a useahle, practicalrope of polyamide monofilaments may, therefore, be provided wherein two machines of difierent types are employed in ordinal sequence to first make strands in accordance with the wire rope technique and thereafter to make the finished rope in accordance with the hemp rope technique, in the manner of hawser laying or cable laying.
  • a rope, cable and the like from continuous synthetic monofilaments which comprises a plurality of outer strands twisted about a centrally disposed inner strand, said inner strand being maintained nntwisted with respect to its axis and said outer strands being twisted about their individual axes as well as about said inner strand, each of said strands including a plurality of individual outer synthetic monofilarnents twisted about a central core of untwisted inner synthetic rnonofilaments, said outer monoi'ilarnents being maintained untwisted with respect to their individual axes and twisted with respect to said central core of untwisted inner synthetic monofilaments.
  • Rope according to claim 5 wherein six outer strands are twisted about a seven central core inner strand.

Landscapes

  • Ropes Or Cables (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Filtering Materials (AREA)
US52118A 1958-08-14 1960-08-26 Ropes from monofilaments and process for the production thereof Expired - Lifetime US3010275A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEF0026405 1958-08-14
DEF0028642 1959-06-08
DEF31951A DE1278886B (de) 1958-08-14 1960-08-23 Litze aus vollsynthetischem Kunststoff
DEF0034023 1961-05-26

Publications (1)

Publication Number Publication Date
US3010275A true US3010275A (en) 1961-11-28

Family

ID=27436854

Family Applications (2)

Application Number Title Priority Date Filing Date
US52118A Expired - Lifetime US3010275A (en) 1958-08-14 1960-08-26 Ropes from monofilaments and process for the production thereof
US132369A Expired - Lifetime US3111001A (en) 1958-08-14 1961-08-18 Stranded rope of endless fully synthetic plastic filaments

Family Applications After (1)

Application Number Title Priority Date Filing Date
US132369A Expired - Lifetime US3111001A (en) 1958-08-14 1961-08-18 Stranded rope of endless fully synthetic plastic filaments

Country Status (9)

Country Link
US (2) US3010275A (xx)
CH (2) CH379971A (xx)
DE (4) DE1410590A1 (xx)
FR (1) FR1232214A (xx)
GB (2) GB925181A (xx)
LU (2) LU40511A1 (xx)
NL (2) NL268562A (xx)
NO (1) NO119779B (xx)
YU (1) YU34920B (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5199253A (en) * 1990-07-16 1993-04-06 American Manufacturing Company, Inc. Nylon rope having superior friction and wearing resistance
US5960622A (en) * 1996-01-30 1999-10-05 Komax Holding Ag Cable depositing device

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU37487A1 (xx) * 1958-08-14 1900-01-01
NL125007C (xx) * 1964-07-15 1900-01-01
US3309862A (en) * 1965-11-15 1967-03-21 Wall Ind Inc Rope manufacturing process
US3415052A (en) * 1966-04-12 1968-12-10 American Mfg Company Inc Synthetic plastic rope for automatic devices
DE3478865D1 (en) * 1984-02-01 1989-08-10 Teufelberger Gmbh Rope formed of threads, yarns or twines made of textile fibrous material
IL132299A (en) * 1998-10-23 2003-10-31 Inventio Ag Stranded synthetic fiber rope
WO2002010050A1 (fr) * 2000-07-27 2002-02-07 Mitsubishi Denki Kabushiki Kaisha Dispositif elevateur, et procede permettant de produire des cables principaux destines a des dispositifs elevateurs
EP1905892B1 (de) * 2006-09-29 2011-11-16 Inventio AG Kunstfaserseil, Aufzugsanlage mit einem solchen Kunstfaserseil und Verfahren zur Herstellung eines Kunstfaserseiles
SG141343A1 (en) * 2006-09-29 2008-04-28 Inventio Ag Synthetic fibre cable and lift installation with such a synthetic fibre cable

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2281036A (en) * 1940-12-21 1942-04-28 Whitlock Cordage Company Rope structure
US2343892A (en) * 1942-10-09 1944-03-14 Columbian Rope Co Rope structure and method of making same
US2438864A (en) * 1945-01-10 1948-03-30 Plymouth Cordage Co Rope

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US276315A (en) * 1883-04-24 Art of manufacturing wire rqpes and cables
DE145165C (xx) *
GB271393A (en) * 1926-05-18 1927-05-21 Felten & Guilleaume Carlswerk A method of and a machine for manufacturing ropes free from the tendency to untwist
US2181344A (en) * 1938-10-10 1939-11-28 American Mfg Co Rope
US2218224A (en) * 1939-02-10 1940-10-15 New Bedford Cordage Co Art of rope making
GB586353A (xx) * 1940-06-19 1900-01-01
US2901884A (en) * 1955-01-17 1959-09-01 Jan V Weinberger Multiple core yarn
LU37487A1 (xx) * 1958-08-14 1900-01-01
DE1813934U (de) * 1959-06-08 1960-06-23 Bayer Ag Seil aus endlosen vollsynthetischen kunststoffdraehten.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2281036A (en) * 1940-12-21 1942-04-28 Whitlock Cordage Company Rope structure
US2343892A (en) * 1942-10-09 1944-03-14 Columbian Rope Co Rope structure and method of making same
US2438864A (en) * 1945-01-10 1948-03-30 Plymouth Cordage Co Rope

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US5960622A (en) * 1996-01-30 1999-10-05 Komax Holding Ag Cable depositing device

Also Published As

Publication number Publication date
DE1410590B2 (xx) 1970-01-08
YU119461A (en) 1979-10-31
NO119779B (xx) 1970-06-29
DE1410590A1 (de) 1968-10-24
CH379971A (de) 1964-07-15
US3111001A (en) 1963-11-19
GB928364A (en) 1963-06-12
FR1232214A (fr) 1960-10-06
DE1510080A1 (de) 1969-07-10
DE1067342B (xx) 1959-10-15
CH408719A (de) 1966-02-28
YU34920B (en) 1980-04-30
DE1278886B (de) 1968-09-26
LU37487A1 (xx) 1900-01-01
GB925181A (en) 1963-05-01
LU40511A1 (xx) 1961-10-14
NL242191A (xx) 1900-01-01
NL268562A (xx) 1900-01-01

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