US3072359A - Yarn tensioning device - Google Patents

Yarn tensioning device Download PDF

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Publication number
US3072359A
US3072359A US69446A US6944660A US3072359A US 3072359 A US3072359 A US 3072359A US 69446 A US69446 A US 69446A US 6944660 A US6944660 A US 6944660A US 3072359 A US3072359 A US 3072359A
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United States
Prior art keywords
yarn
tension
lever
control means
path
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Expired - Lifetime
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US69446A
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English (en)
Inventor
Fried Benjamin
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Individual
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Individual
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Priority to US69446A priority Critical patent/US3072359A/en
Priority to BE612401A priority patent/BE612401A/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/26—Co-operating surfaces mounted for relative movement and arranged to deflect material from straight path
    • B65H59/32—Co-operating surfaces mounted for relative movement and arranged to deflect material from straight path the surfaces being urged away from each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to improvements in yarn tensioning devices designed to feed yarns traveling from a yarn package to any yarn handling machine, such as warp winding machines, for instance, and will be described particularly as used with, but is in no way limited to, fabric producing machines, such as circular knitting machines, warp knitting machines, weaving machines and like means requiring yarn to be fed thereto at a given and preferably uniform tension.
  • Y IIt is a further object o-f the invention to provide simple and fast means for inactivating any given yarn guide means.
  • the above and other objects are accomplished in accordance with the present invention by providing, in combination with a yarn guide means, a yarn tension control means positioned between the yarn guide means and the yarn handling machine,preferably above the path of the traveling yarn.
  • the yarn tension control means comprises elements which force any traveling yarn through a zig-zag path when the yarn contacts the control means.
  • the yarn tension control means comprises a plurality, preferably at least three, of helical elements, such as coil springs, positioned concentrically about one another, the helices of alternating elements or springs facing in opposite directions.
  • the yarn guide means of this invention comprises a plurality of closely adjacent levers with yarn guide means, such ⁇ as a pair of loops, on each lever.
  • Each lever is swingably mounted on an individual support defining a plane with its lever.
  • a tension spring connects each lever with its support and biases the lever upwardly in the indicated plane about a pivot, which is positioned in the support intermediate the points of connection of the tension spring, when the spring is in this plane.
  • the lever may be put out of action when the tension spring is flipped past the pivot and out of the plane.
  • the bias of each tension spring determines the tension under which the individual levers are biased upwardly and this bias is' preferably adjustable for each individual lever.
  • an electrical contact element is mounted above the levers and their supports and transversely of the planes defined thereby.
  • An electrical control circuit connects the contact element to a meansfor stopping Ithe fabric producing machine and is actuated upon contact of oneof the levers with the contact element.
  • FIG. 2 is a side view of the device of FIG. l showing a plurality of yarn guide means levers in different positions;
  • FIG. 3 is a side view showing one yarn guide means lever in yet another position
  • iFIG. 3a is similar to FIG. 3 showing an inactivated yarn guide means lever
  • FIG. 4 is a schematic illustration of the zig-zag path taken by the yarn as it passes in contact with the yarn tension control means of the invention.
  • ayarn tension control means consisting of three helical springs A, B and C positioned concentrically about one another and supported on a crossbar 1.
  • the crossbar may be held lixedly or adjustably by any suitable support means (not shown).
  • the ends of springs A and B are broken off in FG. l so as to reveal the respective underlying spring coils.
  • the helices of alternating springs face in opposite directions so that any yarn in contact therewith is forced into a zig-zag path as it travels through the springs (see FlG. 4).
  • the yarn guide means positioned in the paths of yarns traveling from yarn packages (not shown) to a fabric producing machine (also not shown) comprises a plurality of levers 2 and yarn guide means on each lever, the illustrated yarn guide means consisting of a pair of loops 3.
  • the yarn tension control means A, B, C is positioned between the loops 3 and below the levers 2.
  • Each lever has a support 4 dening a plane with its lever and the path of the yarn traveling through the respective lever loops.
  • the -le'vers are swingably mounted on the supports for pivotal movement in the respective planes, a pivot 5 o-n each support holding a forked end 6 of each lever.
  • Tension spring 7 connects each lever with its support, the pivots 5 being intermediate the points of connection of the tension springs and their supports.
  • Each tension spring biases its lever upwardly toward the respective support about pivot 5 when the tension spring is in the plane defined by the lever and the support (see FIG. l).
  • its tension spring is merely flipped aside past the pivot and out of this plane whereby the lever will corne to rest against the yarn tension control means without further movement, as shown in FIG. 3a and in broken -lines showing some of the tension springs out of action in FIG. l.
  • the bias of the tension springs determines the tension under which the levers 2 are biased upwardly against the pull of the yarns passing through loops 3.
  • the tension spring bias is adjustable.
  • the specifically illustrated bias adjusting means comprises an anchoring element S for one end of each tension spring.
  • the anchoring element is a simple nut-and-bolt assembly movably mounted in longitudinally extending slot 9 ⁇ provided in each lever support 4 whereby the distance between the anchoring element and the respective pivot 5 may be adjusted, varying distances being shown in connection with different levers.
  • One end of each tension spring 7 is simply attached to a lug on the anchoring element and is ⁇ automatically moved farther away or closer to its pivot 5 as the anchoring element is slid along slot 9 to the desired distance and the corresponding bias of the tension spring is obtained.
  • All elements of the yarn tensioning device are preferably of an electrically conductive material, such as metal, for instance steel, and an electrical contact element 10, for instance of steel, is shown mounted above levers 2 and supports 4.
  • Contact element 10 extends transversely of the levers and supports. As shown at 2a in FIG. 2, when a yarn passing through lever loops 3 breaks and thus releases all downward pull on the lever, the lever will snap upwardly under the bias of its tension spring and contact the element 10.
  • the contact element forms part of an electrical control circuit which is closed when an electrically conductive lever 2a contacts the element 10, cable l1 leading from contact element l0 to a suitable means (not shown) for stopping the fabric producing machine to which the yarns travel.
  • the electrical control circuit comprises the lever and support, all supports being tixedly mounted on conductive crossbar 12 which is connected to electrical conductor wire 13 receiving power from a suitable voltage source.
  • the supports are spaced apart by washers 14 positioned between adjacent supports.
  • any desired number of yarn guide means levers may be positioned side-by-side and quite close together, for instance about SAS" apart or even closer, thus permitting individual yarn tension control for a considerable number of yarns coming from any suitable yarn supply, for instance a plurality of yarn cones feeding yarn to a knitting machine.
  • this type of individual yarn control may also be useful in other fabric producing machines where it is desirable to receive the yarns under even and uniform tension.
  • each yarn On its travel from the yarn package to the fabric producing machine, each yarn is guided through lever loops 3, as best shown in FIG. 2.
  • the yarn comes off the package tightly and when it is under the desired tension (see FIG. 3), it will pull the lever 2 down a little against the bias of spring 7 so that the yarn path by-passes the tension control means and the yarn is not in contact therewith.
  • lever 2 will be pivoted upwardly (see FlG. 2) so that the yarn engages the helical springs of the tension control means, passing between their resilient .helices in a zig-zag path and causing corresponding friction to the yarn.
  • each yarn guide means lever may readily be put out of action very simply by merely dipping lits tension spring sideways out of the plane of the lever (see FIG. 3a), whereby the tension spring will pull the lever against the tension control means and keep it inactive and out of contact with the electrical contact element 10. Since knitting operations often involve the feeding of hundreds of yarns and a hundred or so must often be temporarily discontinued for different fabric designs, this fast and simple inactivation of a great number of individual yarn guide means constitutes an enormous operational advantage.
  • the desired tension may be readily and infinitely adjusted by the simple tension spring adjustment means of the invention, as described and illustrated.
  • the fabric producing machine will be stopped instantly when any individual yarn fed thereto breaks because its guide means lever will promptly snap into contact with element l@ under the bias of spring 7 when no yarn pulls the lever down, thus closing an electrical control circuit which actuates any conventional means for stopping the machine.
  • Support rod 1 for the coil springs may be eliminated entirely. If used, the tops of the coil springs are preferably attached to the rod (or to each other, if no rod is used) so as to give the yarns passing through the control means room to move to the upper third of the coils to seek additional friction for proper tension control.
  • a yarn tensioning device comprising a yarn guide means in the path of a yarn traveling from a yarn package to a yarn handling machine; a yarn tension control means positioned between the yarn guide means and said yarn handling machine, said yarn tension control means extending transversely of said yarn path and comprising a plurality of helical resilient elements positioned concentrically one about the other, the helices of adjacent elements facing in opposite directions and the yarn tension control means being arranged above the path of the traveling yarn, the yarn tensioning device being arranged to guide any yarn into contact with said helical elements whereby said yarn is forced through a zigzag path as it travels therethrough.
  • a yarn tensioning device comprising, yarn guide means in the path of a yarn traveling from a yarn package to a yarn handling machine; yarn tension control means positioned between the yarn guide means and said yarn handling machine, said yarn tension control means extending transversely of said yarn path and comprising a plurality of helical resilient elements positio-ned concentrically one about the other, the helices of adjacent elements facing in opposite directions ⁇ and the yarn tension control means being arranged above the path of the traveling yarn, the yarn tensioning device being arranged to guide any yarn into contact with said helical elements whereby said yarn is forced through a zig-zag path as it travels therethrough, said yarn tension ⁇ control means comprising at least three of said helical resilient elements.
  • a yarn tensioning device comprising yarn guide means in the paths of yarns traveling from a plurality of yarn packages to a yarn handling machine, said guide means comprising a plurality of adjacent levers, yarn guide means on each of said levers, an individual support for each of said levers, each lever and its support defining a plane with a respective one of said yarn paths, each support including a pivot swingably mounting a respec- Itive one of said levers in a respective one of said planes, a tension spring connecting each lever with its support, each pivot being intermediate the points of connection of the tension spring to the lever and the support respectively, the spring connecting points and the lever pivot delining a single plane, each tension spring biasing the lever connected thereto upwardly toward its support about said pivot when said tensio-n spring is in said plane and putting the lever out of action when said tension spring is flipped past said pivot and out of said plane, and the bias of said tension springs determining the tension under which said levers are biased upwardly, and yarn tension control means positioned between the yarn guide
  • a yarn tensioning device comprising yarn guide means in the paths of yarns traveling from a plurality of yarn packages to a yarn handling machine, said guide means comprising ⁇ a plurality of adjacent levers, yarn guide means on each of said levers, an individual support for each of said levers, each lever and its support deiining a plane with a respective one of said yarn paths, each support including a pivot swingably mounting a respective one of said levers in a respective one of said planes, and a tension spring connecting each lever with its support, each pivot being intermediate the points of connection of the tension spring to the lever and the support respectively, the spring connection points and the lever pivot defining a single plane, each tension spring biasing the lever connected thereto upwardly toward its support about said pivot when said tension spring is in said plane and putting the lever out of action when said tension spring is flipped past said pivot and out of said plane, the bias of said tension spring determining the tension under which said levers are biased upwardly, said yarn tension control means positioned between the yarn guide means and said yarn handling machine,

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  • Tension Adjustment In Filamentary Materials (AREA)
US69446A 1960-11-15 1960-11-15 Yarn tensioning device Expired - Lifetime US3072359A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US69446A US3072359A (en) 1960-11-15 1960-11-15 Yarn tensioning device
BE612401A BE612401A (fr) 1960-11-15 1962-01-08 Dispositif pour maintenir en tension des fils

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Application Number Priority Date Filing Date Title
US69446A US3072359A (en) 1960-11-15 1960-11-15 Yarn tensioning device

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US3072359A true US3072359A (en) 1963-01-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115258760A (zh) * 2022-08-16 2022-11-01 山东中塑泰富科技有限公司 一种吹塑薄膜加工用分切机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190125709A (en) * 1901-12-16 1902-10-23 British Automatic Loom Company Improvements in or relating to Thread Tension-regulating and Slack take-up Devices for Needle Looms or other Textile Machinery.
US2217022A (en) * 1937-10-26 1940-10-08 Hemphill Co Solid color pattern knitting machine
US2383838A (en) * 1944-07-03 1945-08-28 Robert N Auble Tension control, stop mechanism, and warning signal for knitting machines
US2618444A (en) * 1950-07-28 1952-11-18 Charlotte C Taggart Yarn tensioning
FR1082443A (fr) * 1953-08-27 1954-12-29 Tendeur de fil

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190125709A (en) * 1901-12-16 1902-10-23 British Automatic Loom Company Improvements in or relating to Thread Tension-regulating and Slack take-up Devices for Needle Looms or other Textile Machinery.
US2217022A (en) * 1937-10-26 1940-10-08 Hemphill Co Solid color pattern knitting machine
US2383838A (en) * 1944-07-03 1945-08-28 Robert N Auble Tension control, stop mechanism, and warning signal for knitting machines
US2618444A (en) * 1950-07-28 1952-11-18 Charlotte C Taggart Yarn tensioning
FR1082443A (fr) * 1953-08-27 1954-12-29 Tendeur de fil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115258760A (zh) * 2022-08-16 2022-11-01 山东中塑泰富科技有限公司 一种吹塑薄膜加工用分切机

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BE612401A (fr) 1962-07-09

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