US3131530A - Wire ropes - Google Patents
Wire ropes Download PDFInfo
- Publication number
- US3131530A US3131530A US70160A US7016060A US3131530A US 3131530 A US3131530 A US 3131530A US 70160 A US70160 A US 70160A US 7016060 A US7016060 A US 7016060A US 3131530 A US3131530 A US 3131530A
- Authority
- US
- United States
- Prior art keywords
- sheathing
- rope
- core
- portions
- wire elements
- 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
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
Definitions
- This invention relates to Wire ropes having a plastic sheathing.
- Wire ropes are sometimes covered with plastic, for example polyamide, in order to protect them against corrosion, chemical inlluences or the like.
- plastic for example polyamide
- This step proves advantageous in cases where the loads on the rope are static, but it is completely unsuccessful when the rope is to perform moving work, i.e. when it travels over pulleys, because experience shows that the plastic sheathing then undergoes a large number of transverse fractures and breaks irregularly in a very short time.
- the sheathing has the peculiarity of widening out in the form of a basket and failing to return to its original form.
- the invention relates to a wire rope comprising a core surrounded by a layer of wire elements which, in turn, are surrounded by a plastic sheathing.
- the aforesaid disadvantages are obviated in this rope by virtue of the fact that the elements of the outer layer define narrow gaps between them, and that the plastic sheathing has portions extending through the gaps into the region of the rope core supporting the outer elements, the inwardly extending sheathing portions constituting anchors holding the sheathing on the outer wire elements.
- the rope is not only effectively protected against corrosion, but is also substantially freed from the very troublesome abrasion occurring in moving ropes. Finally, those portions of the plastic sheathing which project between the outer elements prevent lateral contact of the latter, so that no lateral crossover of the wires occurs even under heavy loads.
- plastics employed for the sheathing must be appropriately chosen in regard to hardness, tensile strength, bending strength and the like and must be adapted to the particular purpose of use.
- FIGURES 1, 2 and 3 respectively show three rope cross-sections as compared with the prior art.
- FIGURE 3 illustrates the invention as applied to a stranded spiral rope.
- the outer strands 12, 13 are here disposed at some distance apart, so that the plastic of the sheathing 14 can penetrate as far as the rope core 15, and in any case beyond the centre circle 16 of the outer strands.
- Dovetail-like anchor portions 17 are thereby formed, which unyieldingly anchor the jacket and thus ensure that the rope structure and the sheathing are rigidly held together.
- the invention is primarily applicable to stranded spiral ropes in which, as in FIGURE 3, an outer layer of strands is twisted over a core, for example one consisting of an actual core element and an inner layer of strands.
- the lateral spacing between the outer elements, which renders possible the penetration of the thermoplastic material can readily be ensured by means known in the rope technique, more especially in the case of rope constructions such as the Seale type in which inner and outer strands lie in a parallel lay, so that the outer strands are embedded in the gaps between adjacent inner strands. lf it is desired to direct the plastic also to the inner strands, these will preferably be made, for example, of thicker wires in order to make them more permeable.
- the invention at the same time alfords an advantageous possibility of providing wire ropes with a colouring for identification purposes by colouring the plastic sheathing in the desired manner.
- colouring for example in order to determine the age, the extent of the wear and the purpose of use of a rope.
- this has not been possible because paint becomes entirely or partially detached from the metal of the rope, more especially by abrasion, while the coloured synthetic sheathing according to the invention adheres firmly.
- a wire rope comprising, in combination, a rope core, a layer of outer wire elements twisted about, and directly supported on, the core, the outer wire elements being of substantially circular cross section and deiining circumferentially spaced and radially extending gaps therebetween, the gaps widening in a radial direction from a narrow center portion, and a plastic sheathing surrounding the layer of outer wire elements, the plastic sheathing having portions extending through the gaps and radially inwardly beyond their narrow portions, the inwardly extending sheathing portions constituting anchors holding the sheathing on the outer wire elements.
- a wire rope comprising, in combination, a rope core, a layer of outer wire elements directly supported on the core, and constituted by wire strands spirally twisted about the core, the outer Wire elements being of substantially circular cross section and defining circumferentially spaced and radially extending gaps therebetween, the gaps widening in a radial direction from a narrow center portion, and a plastic sheathing surrounding the layer of outer wire elements, the plastic sheathing having portions extending through the gaps and radially inwardly beyond their narrow portions, the inwardly extending sheathing portions constituting anchors holding the sheathing on the outer wire elements.
- a wire rope comprising, in combination, a rope core, a layer of outer Wire elements twisted about, and directly supported on, the core, the outer wire elements being of substantially circular cross section and deniug circumferentially spaced and radially extending gaps therebetween, the gaps widening in a radial direction from a narrow center portion, and a plastic sheathing surrounding the layer of outer Vwire elements, the plastic sheathing having portions extending through the gaps and radially inwardly beyond their narrow portions, the inwardly extending sheathing portions constituting anchors of dove- UNITED STATES PATENTS Roussillon Dec. 21, 1909 Gore Mar. 11, 1913 4 Meier May 18, 1926 Robertson Oct. 22, 1935 Hodson Jan. 21, 1936 Horn July 21, 1936 Mayne Ian. 12, 1937 Fenner Aug. 25, 1959 Fenner Aug. 25, 1959
Landscapes
- Ropes Or Cables (AREA)
Description
May 5, 1964 A. DIETZ WIRE ROPE-S Filed Nov. 18, 1960 r l l 2(22, I Af//M/* Y lill!! /N VEA/TOR fwamldp@ United States Parent O,
ROIES Alfred Dietz, Damaschkestr. 30, Neustadt, near Coburg, Germany Filed Nov. 18, 1960, Ser. No. 70,160 Claims priority, application Germany Nov. 2S, 1959 4 Claims. (Cl. 57--149) This invention relates to Wire ropes having a plastic sheathing.
Wire ropes are sometimes covered with plastic, for example polyamide, in order to protect them against corrosion, chemical inlluences or the like. This step proves advantageous in cases where the loads on the rope are static, but it is completely unsuccessful when the rope is to perform moving work, i.e. when it travels over pulleys, because experience shows that the plastic sheathing then undergoes a large number of transverse fractures and breaks irregularly in a very short time. In addition, the sheathing has the peculiarity of widening out in the form of a basket and failing to return to its original form.
The invention relates to a wire rope comprising a core surrounded by a layer of wire elements which, in turn, are surrounded by a plastic sheathing. The aforesaid disadvantages are obviated in this rope by virtue of the fact that the elements of the outer layer define narrow gaps between them, and that the plastic sheathing has portions extending through the gaps into the region of the rope core supporting the outer elements, the inwardly extending sheathing portions constituting anchors holding the sheathing on the outer wire elements. Experience shows that with such an arrangement both detachment of the sheathing from the rope and cracks or fractures in the sheathing are absolutely avoided. By virtue of this protection, the rope is not only effectively protected against corrosion, but is also substantially freed from the very troublesome abrasion occurring in moving ropes. Finally, those portions of the plastic sheathing which project between the outer elements prevent lateral contact of the latter, so that no lateral crossover of the wires occurs even under heavy loads.
It is obvious that the plastics employed for the sheathing must be appropriately chosen in regard to hardness, tensile strength, bending strength and the like and must be adapted to the particular purpose of use.
The underlying idea of the invention is illustrated by way of example in the drawing, in which FIGURES 1, 2 and 3 respectively show three rope cross-sections as compared with the prior art.
It is known to dispose a smooth tiexible plastic tube 6 around the outer strands as illustrated in FIGURE 1. Since this tube does not form an integral unit with the rope, it is destroyed in a short time by the work of the rope. This is not changed even if the plastic sheathing 7 is formed with wedge-shaped portions 8 extending substantially as far as the points of contact 9 between the adjacent strands 10, 11 as illustrated in FIGURE 2, since in this case also lifting of the sheathing from the rope cannot be prevented.
In contradistinction thereto, FIGURE 3 illustrates the invention as applied to a stranded spiral rope. The outer strands 12, 13 are here disposed at some distance apart, so that the plastic of the sheathing 14 can penetrate as far as the rope core 15, and in any case beyond the centre circle 16 of the outer strands. Dovetail-like anchor portions 17 are thereby formed, which unyieldingly anchor the jacket and thus ensure that the rope structure and the sheathing are rigidly held together.
While it is generally sufficient to introduce the plastic between the outer elements ofthe rope, it would naturally also be possible to cause the material of the sheathing to 3,131,530 Patented May 5, 119,64
LCC
penetrate even more deeply, so that it also reaches between elements vof the rope core, for example betweenthe strands of-an inner stranded layer.
It is immaterial for the practical application of the invention how the rope to be covered is designed. However, the invention is primarily applicable to stranded spiral ropes in which, as in FIGURE 3, an outer layer of strands is twisted over a core, for example one consisting of an actual core element and an inner layer of strands.
The lateral spacing between the outer elements, which renders possible the penetration of the thermoplastic material can readily be ensured by means known in the rope technique, more especially in the case of rope constructions such as the Seale type in which inner and outer strands lie in a parallel lay, so that the outer strands are embedded in the gaps between adjacent inner strands. lf it is desired to direct the plastic also to the inner strands, these will preferably be made, for example, of thicker wires in order to make them more permeable.
The invention at the same time alfords an advantageous possibility of providing wire ropes with a colouring for identification purposes by colouring the plastic sheathing in the desired manner. For technical reasons, it may be desirable to effect such colouring, for example in order to determine the age, the extent of the wear and the purpose of use of a rope. Heretofore, this has not been possible because paint becomes entirely or partially detached from the metal of the rope, more especially by abrasion, while the coloured synthetic sheathing according to the invention adheres firmly.
What I claim is:
1. A wire rope comprising, in combination, a rope core, a layer of outer wire elements twisted about, and directly supported on, the core, the outer wire elements being of substantially circular cross section and deiining circumferentially spaced and radially extending gaps therebetween, the gaps widening in a radial direction from a narrow center portion, and a plastic sheathing surrounding the layer of outer wire elements, the plastic sheathing having portions extending through the gaps and radially inwardly beyond their narrow portions, the inwardly extending sheathing portions constituting anchors holding the sheathing on the outer wire elements.
2. The wire rope of claim 1, wherein the plastic sheathing is colored.
3. A wire rope comprising, in combination, a rope core, a layer of outer wire elements directly supported on the core, and constituted by wire strands spirally twisted about the core, the outer Wire elements being of substantially circular cross section and defining circumferentially spaced and radially extending gaps therebetween, the gaps widening in a radial direction from a narrow center portion, and a plastic sheathing surrounding the layer of outer wire elements, the plastic sheathing having portions extending through the gaps and radially inwardly beyond their narrow portions, the inwardly extending sheathing portions constituting anchors holding the sheathing on the outer wire elements. v
4. A wire rope comprising, in combination, a rope core, a layer of outer Wire elements twisted about, and directly supported on, the core, the outer wire elements being of substantially circular cross section and deniug circumferentially spaced and radially extending gaps therebetween, the gaps widening in a radial direction from a narrow center portion, and a plastic sheathing surrounding the layer of outer Vwire elements, the plastic sheathing having portions extending through the gaps and radially inwardly beyond their narrow portions, the inwardly extending sheathing portions constituting anchors of dove- UNITED STATES PATENTS Roussillon Dec. 21, 1909 Gore Mar. 11, 1913 4 Meier May 18, 1926 Robertson Oct. 22, 1935 Hodson Jan. 21, 1936 Horn July 21, 1936 Mayne Ian. 12, 1937 Fenner Aug. 25, 1959 Fenner Aug. 25, 1959
Claims (1)
- 3. A WIRE ROPE COMPRISING, IN COMBINATION, A ROPE CORE, A LAYER OF OUTER WIRE ELEMENTS DIRECTLY SUPPORTED ON THE CORE, AND CONSTIUTED BY WIRE STRANDS SPIRALLY TWISTED ABOUT THE CORE, THE OUTER WIRE ELEMENTS BEING OF SUBSTANTIALLY CIRCULAR CROSS SECTION AND DEFINING CIRCUMFERENTIALLY SPACED AND RADIALLY EXTENDING THEREBETWEEN, THE GAPS WIDENING IN A RADICAL DIRECTION FROM A NARROW CENTER PORTION, AND A PLASTIC SHEATHING SURROUNDING THE LAYER OF OUTER WIRE ELEMENTS, THE PLASTIC SHEATHING HAVING PORTIONS EXTENDING THROUGH THE GAPS AND RADIALLY INWARDLY BEYOND THEIR NARROW PORTIONS, THE INWARDLY EXTENDING SHEATHING PORTIONS CONSTITUTING ANCHORS HOLDING THE SHEATHING ON THE OUTER WIRE ELEMENTS.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED31993A DE1221926B (en) | 1959-11-28 | 1959-11-28 | Plastic-coated wire rope |
Publications (1)
Publication Number | Publication Date |
---|---|
US3131530A true US3131530A (en) | 1964-05-05 |
Family
ID=7041133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US70160A Expired - Lifetime US3131530A (en) | 1959-11-28 | 1960-11-18 | Wire ropes |
Country Status (4)
Country | Link |
---|---|
US (1) | US3131530A (en) |
CH (1) | CH380592A (en) |
DE (1) | DE1221926B (en) |
NL (1) | NL257402A (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3195299A (en) * | 1962-06-06 | 1965-07-20 | Dietz Alfred | Wire rope |
US3391531A (en) * | 1965-03-22 | 1968-07-09 | Macwhyte Company | Strand and rope |
US3404526A (en) * | 1965-06-25 | 1968-10-08 | Bekaert Pvba Leon | Highway safety fence cables |
US3443374A (en) * | 1966-09-30 | 1969-05-13 | All American Eng Co | Encapsulated wire cable and method of encapsulation thereof |
US3518730A (en) * | 1968-01-22 | 1970-07-07 | John A Cupler | Monoform shoelace |
US3534542A (en) * | 1967-10-12 | 1970-10-20 | Guy Frederik Nanyah West | Ropes |
US3785701A (en) * | 1971-12-01 | 1974-01-15 | American Chain & Cable Co | Safety belt system |
US3824777A (en) * | 1973-10-05 | 1974-07-23 | Amsted Ind Inc | Lubricated plastic impregnated wire rope |
US4057956A (en) * | 1976-03-17 | 1977-11-15 | Tolle Russell W | Rubber covered cable |
US4120145A (en) * | 1977-08-03 | 1978-10-17 | Amsted Industries Incorporated | Lubricated plastic impregnated wire rope |
WO1979000182A1 (en) * | 1977-10-05 | 1979-04-19 | Cable Belt Ltd | Improvements in and relating to ropes |
US4563870A (en) * | 1983-11-07 | 1986-01-14 | United States Steel Corporation | Lubricated wire rope |
US4635432A (en) * | 1985-04-10 | 1987-01-13 | Wire Rope Corporation Of America, Inc. | Method for impregnating and coating wire rope |
US4676058A (en) * | 1986-06-09 | 1987-06-30 | Amsted Industries Incorporated | Wire rope with ductile core |
EP0409011A1 (en) * | 1989-07-19 | 1991-01-23 | Emil Kühne | Method of coating a bundle of cables |
US20060260287A1 (en) * | 2005-05-17 | 2006-11-23 | Wire Rope Industries. Ltd. | Double jacketed wire rope and method of manufacture thereof |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2161151A5 (en) * | 1971-11-16 | 1973-07-06 | Saar Gmbh Drahtseilwerk | |
DE3344985A1 (en) * | 1983-12-13 | 1985-06-20 | August Rich. Dietz & Sohn Draht- u.Hanfseilwerk, 8632 Neustadt | Wire rope having a plastic sheathing |
EP0150702B2 (en) * | 1984-02-01 | 1996-10-02 | Teufelberger Gesellschaft m.b.H. | Rope formed of threads, yarns or twines made of textile fibrous material |
BR9500779A (en) | 1994-03-02 | 1995-10-24 | Inventio Ag | Cable as a support medium for elevators |
DE19645859A1 (en) * | 1996-11-07 | 1998-05-14 | Alsthom Cge Alcatel | Self-supporting, insulated electric conductor esp lift/elevator line |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US943998A (en) * | 1908-01-14 | 1909-12-21 | Philippe Roussillon | Flexible and elastic band for pneumatic tires. |
US1055326A (en) * | 1912-02-07 | 1913-03-11 | Thomas Gore | Drilling-cable. |
US1585043A (en) * | 1923-08-16 | 1926-05-18 | Lorentz Segelcke Daae | Thread and method for manufacturing impregnated fabric |
US2018230A (en) * | 1933-07-10 | 1935-10-22 | Robertson S Rope Patents Ltd | Rope |
US2028157A (en) * | 1934-09-17 | 1936-01-21 | Walter D Hodson | Wire rope |
US2048450A (en) * | 1933-01-24 | 1936-07-21 | Norddeutsche Seekabelwerke Ag | Stranded conductor |
US2067405A (en) * | 1934-07-05 | 1937-01-12 | Goodrich Co B F | Rubber impregnated metal cable and method of making same |
US2900784A (en) * | 1958-01-15 | 1959-08-25 | United States Steel Corp | Cord and article containing the same |
US2900785A (en) * | 1956-05-18 | 1959-08-25 | United States Steel Corp | Six-wire strand |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE881763C (en) * | 1940-03-09 | 1953-07-02 | Franz Schellenberg | Strands twisted together from a number of individual wires or wire rope formed from several such strands for support and pulling purposes and processes for their production |
-
0
- NL NL257402D patent/NL257402A/xx unknown
-
1959
- 1959-11-28 DE DED31993A patent/DE1221926B/en active Pending
-
1960
- 1960-10-31 CH CH1215060A patent/CH380592A/en unknown
- 1960-11-18 US US70160A patent/US3131530A/en not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US943998A (en) * | 1908-01-14 | 1909-12-21 | Philippe Roussillon | Flexible and elastic band for pneumatic tires. |
US1055326A (en) * | 1912-02-07 | 1913-03-11 | Thomas Gore | Drilling-cable. |
US1585043A (en) * | 1923-08-16 | 1926-05-18 | Lorentz Segelcke Daae | Thread and method for manufacturing impregnated fabric |
US2048450A (en) * | 1933-01-24 | 1936-07-21 | Norddeutsche Seekabelwerke Ag | Stranded conductor |
US2018230A (en) * | 1933-07-10 | 1935-10-22 | Robertson S Rope Patents Ltd | Rope |
US2067405A (en) * | 1934-07-05 | 1937-01-12 | Goodrich Co B F | Rubber impregnated metal cable and method of making same |
US2028157A (en) * | 1934-09-17 | 1936-01-21 | Walter D Hodson | Wire rope |
US2900785A (en) * | 1956-05-18 | 1959-08-25 | United States Steel Corp | Six-wire strand |
US2900784A (en) * | 1958-01-15 | 1959-08-25 | United States Steel Corp | Cord and article containing the same |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3195299A (en) * | 1962-06-06 | 1965-07-20 | Dietz Alfred | Wire rope |
US3391531A (en) * | 1965-03-22 | 1968-07-09 | Macwhyte Company | Strand and rope |
US3404526A (en) * | 1965-06-25 | 1968-10-08 | Bekaert Pvba Leon | Highway safety fence cables |
US3443374A (en) * | 1966-09-30 | 1969-05-13 | All American Eng Co | Encapsulated wire cable and method of encapsulation thereof |
US3534542A (en) * | 1967-10-12 | 1970-10-20 | Guy Frederik Nanyah West | Ropes |
US3518730A (en) * | 1968-01-22 | 1970-07-07 | John A Cupler | Monoform shoelace |
US3785701A (en) * | 1971-12-01 | 1974-01-15 | American Chain & Cable Co | Safety belt system |
US3824777A (en) * | 1973-10-05 | 1974-07-23 | Amsted Ind Inc | Lubricated plastic impregnated wire rope |
US4057956A (en) * | 1976-03-17 | 1977-11-15 | Tolle Russell W | Rubber covered cable |
US4120145A (en) * | 1977-08-03 | 1978-10-17 | Amsted Industries Incorporated | Lubricated plastic impregnated wire rope |
WO1979000182A1 (en) * | 1977-10-05 | 1979-04-19 | Cable Belt Ltd | Improvements in and relating to ropes |
US4266396A (en) * | 1977-10-05 | 1981-05-12 | Cable Belt, Ltd. | Improvements in and relating to ropes |
US4563870A (en) * | 1983-11-07 | 1986-01-14 | United States Steel Corporation | Lubricated wire rope |
US4635432A (en) * | 1985-04-10 | 1987-01-13 | Wire Rope Corporation Of America, Inc. | Method for impregnating and coating wire rope |
US4676058A (en) * | 1986-06-09 | 1987-06-30 | Amsted Industries Incorporated | Wire rope with ductile core |
EP0409011A1 (en) * | 1989-07-19 | 1991-01-23 | Emil Kühne | Method of coating a bundle of cables |
CH679844A5 (en) * | 1989-07-19 | 1992-04-30 | Emil Kuehne | |
US20060260287A1 (en) * | 2005-05-17 | 2006-11-23 | Wire Rope Industries. Ltd. | Double jacketed wire rope and method of manufacture thereof |
US7389633B2 (en) | 2005-05-17 | 2008-06-24 | Wire Rope Industries Ltd. | Double jacketed wire rope and method of manufacture thereof |
Also Published As
Publication number | Publication date |
---|---|
CH380592A (en) | 1964-07-31 |
DE1221926B (en) | 1966-07-28 |
NL257402A (en) |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3131530A (en) | Wire ropes | |
US3538702A (en) | Reinforcing element | |
FI78129C (en) | TEXTILFIBERREP. | |
KR100680926B1 (en) | Rope for elevator | |
US3115542A (en) | Submarine electric cables | |
US4947636A (en) | Metal wire cord for elastomer reinforcement | |
US3195299A (en) | Wire rope | |
US3318082A (en) | Plastics impregnated rope | |
US3772454A (en) | Torque balanced cable | |
GB1443868A (en) | Wire rope with plastics-impregnated lubricated core | |
US3555789A (en) | Reinforcing metal cords | |
US3154910A (en) | Stranded spiral rope | |
US4809492A (en) | Torsionally balanced wire rope or cable | |
USRE29537E (en) | Torque balanced rope | |
US3111001A (en) | Stranded rope of endless fully synthetic plastic filaments | |
US3600884A (en) | Steel cord for reinforcing rubber articles | |
RU2533960C1 (en) | Hoist suspending and/or driving assembly having at least one surface providing traction or creation of adhesive forces and containing open-laid weaving fibres | |
US3075344A (en) | Double twisted strand and method of making the same | |
US3534542A (en) | Ropes | |
US3306022A (en) | Wire rope | |
US1769945A (en) | Wire rope or cable | |
US2257646A (en) | Tire casing | |
US3035403A (en) | Stranded wire structures | |
US1481934A (en) | Wire rope | |
US2136866A (en) | Wire rope |