US3874612A - Yarn tensioning device - Google Patents

Yarn tensioning device Download PDF

Info

Publication number
US3874612A
US3874612A US384308A US38430873A US3874612A US 3874612 A US3874612 A US 3874612A US 384308 A US384308 A US 384308A US 38430873 A US38430873 A US 38430873A US 3874612 A US3874612 A US 3874612A
Authority
US
United States
Prior art keywords
yarn
lever
tensioning device
force
biasing
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
US384308A
Other languages
English (en)
Inventor
Joseph John Hurley
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.)
J&P Coats Ltd
Original Assignee
J&P Coats Ltd
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 J&P Coats Ltd filed Critical J&P Coats Ltd
Application granted granted Critical
Publication of US3874612A publication Critical patent/US3874612A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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

  • An automatic yarn tensioning mechanism incorporates a yarn tensioning device which is arranged to apply a biasing force as a retarding force to a yarn.
  • a yarn package carrier- is mounted in such a way and coupled to the yarn tensioning device that at least part of the total weight of the carrier and a yarn package carried thereon is applied as a control force opposing the biasing force of the yarn tensioning device.
  • the yarn tensioning device'and the yarn package carrier may incorporate pivoted levers connected by a link.
  • Means for providing the biasing force may be a weight or a SpI'lIlg. 1
  • the subject of this invention is a yarn tensioning mechanism for automatically tensioning yarn being withdrawn from a yarn package to compensate for changes in the force required to pull the yarn from the package so that the total tension in the yarn follows a predetermined pattern, for example, the tension may be required to remain constant as the package in unwound or may require to have arising or a falling characteristic as the package is unwound.
  • An automatic yarn tensioning mechanism incorporates a yarn tensioning device operative by application of a biasing force to it to apply a retarding force to a yarn passing therethrough, biasing means arranged to apply a predetermined biasing force to the yarn tensioning means, a yarn package carrier so mounted on a fixed support that at least part of the total weight of the yarn package carrier and a yarn package carried thereon is available as an unbalanced force, and means coupling the yarn package carrier to the tensioning device and arranged to transmit the unbalanced force available from the yarn package carrier to the tensioning device as a control force opposing the biasing force.
  • the biasing means may consist of a weight connected to the tensioning device.
  • the biasing means may consist of a spring connected to the tensioning device.
  • the weight or the spring may be connected directly to the tensioning device or may be connected by a lever system to the tensioning device.
  • the yarn package carrier may incorporate a lever mounted on a fulcrum and carrying means for mounting a yarn package on the lever, the lever being linked to the tensioning device.
  • the lever may be counterbalanced so that the unbalanced force available from the yarn package carrier is constituted solely by the weight of a yarn package mounted on the carrier.
  • At least part of the weight of the yarn package carrier is unbalanced so that the unbalanced force available from the yarn package carrier is derived from the unbalanced part of the weight of the yarn package carrier and the weight of a yarn package mounted on the yarn package carrier.
  • the biasing means may be arranged to tend to cause the tensioning device to tend to exert a predetermined maximum retarding force on yarn passing through the tensioning device or may be arranged to cause the tensioning device to tend to exert a minimum retarding force, which may be zero, on yarn passing through the tensioning device.
  • the yarn tensioning device includes a lever mounted on a fixed pivot, the lever being so operatively connected to the biasing means and the tensioning device that the biasing force exerted by the biasing means influences the retarding force applied by the tensioning device to a yarn passing therethrough
  • the yarn package carrier incorporates a lever mounted on a fixed pivot, a link connecting the lever of the yarn package carrier to the lever of the yarn tensioning device, and means for carrying a yarn package fitted to the lever of the yarn package carrier.
  • the yarn tensioning device and the fulcra for the two levers may be mounted on a common bracket attachable to the frame of a machine with which the mechanism is to be used.
  • FIG. 1 is a side elevation of the yarn tensioning mechanism of this invention
  • FIGS. 2-6 are diagrammatic illustrations of various arrangements of the yarn tensioning mechanism and biasing means according to this invention. 1
  • FIGS. 7 and 8 are diagrammtic illustrations of further arrangements of the yarn package carrier according to this invention.
  • FIGS. 2-6 are not exhaustive of the possible arrangements of the yarn tensioning device and its biasing means falling within the scope of the invention.
  • FIG. 1 denotes a fixed support clamped to a suitable part 2 of a machine with which the mechanism is to be used and 3 denotes a yarn package carrier incorporating a lever 4 pivoted at 5 to the fixed support 1 and connected by a link 6 to a point 6A on a lever 7 pivoted at 8 to the fixed support 1, the lever 7 carrying at the end remote from the connection of the link 6 a biasing weight 9 and at the end adjacent the connection of the link 6 the movable member 10 of a yarn tensioning device 11.
  • the fixed member 12 of the yarn tensioning device 11 is supported on a bracket 13 clamped to the fixed support 1.
  • the bracket 13 also carries the pivot 8.
  • lever 4 denotes a yarn package carrier mounted on the lever 4 at a point between the pivot 5 and the connection of the link 6.
  • the lever 4 is a lever of the third order and corresponds with that shown in the diagram of FIG. 7 while the lever 7 corresponds with that shown in the diagram of FIG. 2 and is a lever of the first order.
  • the diagram of FIG. 3 shows an arrangement in which the biasing weight 9 tends to reduce the tension provided by the tensioning device.
  • the diagram of FIG. 4 shows a construction in which a spring 15 acts directly on the movable member of the tensioning device.
  • the diagram of FIG. 5 shows a construction in which the spring operates through the lever 7 to increase the tension provided by the yarn tensioning device ll while the diagram of FIG. 6 shows an arrangement in which the spring 15 operates through the lever 7 to reduce the tension provided by the yarn tensioning device 11.
  • the arrows l6 and 17 in FIGS. 2, 3, 5 and 6 corresponding with the arrows l6 and 17 in FIGS. 7 and 8 and show how the lever 4 of the yarn package carrier 3 can be arranged either as a lever of the third order or as a lever of the first order and applied to any of the constructions of FIGS. 2, 3, 5 and 6 to operate according to the invention.
  • the biasing means constituted by the weight 9 or the spring 15 applies a biasing force tending to cause the yarn tensioning device 11 to exert a predetermined maximum or minimum retarding force on yarn passing through the device.
  • the weight of the yarn package 14 reduces as yarn is removed from the package so that the control force available to oppose the biasing force and exerted through the link 6 diminishes also as yarn is removed from the package.
  • FIGS. 1, 2, 4 and 5 which show constructionsin which the biasing means tends to cause a maximum retarding force to be applied to yarn passing through the tensioning device 11, a reduction in the control force opposing the biasing force results in an increase in the retarding force exerted by the tensioning device 11.
  • FIGS. 3 and 6 show constructions in which the biasing means tends to cause a minimum, e.g., zero retarding force to be applied to yarn passing through the tensioning device 11, a reduction in the control force opposing the biasing force results in a decrease in the retarding force exerted by the tensioning device because in this construction the retarding force is obtained mainly or wholly from the control force.
  • any desired pattern of tension can be arranged to occur in the yarn as withdrawal of yarn from the yarn package proceeds.
  • a constant tension in the yarn can be achieved by arranging the mechanism, e.g., by changing the weight 9 and/or altering the position of the point 6A, to reduce the tension generated by the tensioning device in such a way as to compensate more or less exactly for that resulting from the increasing pull required for withdrawal of yarn from the package.
  • the mechanism can be arranged to undercompensate or overcompensate to any desired extent for the increasing pull required for withdrawal of the yarn from the package thus providing a predetermined rising tension or reducing tension characteristic as yarn withdrawal proceeds.
  • An automatic yarn tensioning device incorporating a yarn tensioning means operative by application of a biasing force to it so as to apply a retarding force to a yarn passing therethrough, biasing means arranged for applying a predetermined biasing force to said yarn tensioning means, said yarn tensioning device including a first lever, a fixed pivot on which said first lever is mounted, said first lever being operatively connected to said biasing means and said tensioning means so that the force exerted by the biasing means tends to swing said first lever so as to apply a constant biasing force to the tensioning device, a second lever, a fixed pivot on which said second lever is mounted, a link connecting said first lever to said second lever, a yarn package carrier mounted on said second lever so that at least part of the total weight of said yarn package carrier and a yarn package carried thereon is available as an unbalanced force tending to swing said second lever so as to transmit the variable unbalanced force available from the yarn package carrier to said first lever as a variable control force opposing the biasing force generated by the bias
  • a mechanism as claimed in claim 1 in which a common bracket carries the yarn tensioning device and the pivots on which said two levers are mounted, the common bracket being attachable to the frame of a machine with which the mechanism is to be used.

Landscapes

  • Tension Adjustment In Filamentary Materials (AREA)
US384308A 1972-08-05 1973-07-31 Yarn tensioning device Expired - Lifetime US3874612A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3665072 1972-08-05

Publications (1)

Publication Number Publication Date
US3874612A true US3874612A (en) 1975-04-01

Family

ID=10390023

Family Applications (1)

Application Number Title Priority Date Filing Date
US384308A Expired - Lifetime US3874612A (en) 1972-08-05 1973-07-31 Yarn tensioning device

Country Status (6)

Country Link
US (1) US3874612A (fr)
JP (1) JPS4985330A (fr)
BE (1) BE803159A (fr)
DE (1) DE2339332A1 (fr)
FR (1) FR2195227A5 (fr)
IT (1) IT990145B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080093408A1 (en) * 2006-10-24 2008-04-24 Gabor Fabian Wire tensioning arrangement

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29806739U1 (de) 1998-04-15 1999-09-02 Sucker-Müller-Hacoba GmbH & Co., 41066 Mönchengladbach Fadenbremsvorrichtung
CH719436A1 (de) * 2022-02-18 2023-08-31 Ssm Schaerer Schweiter Mettler Ag Vorrichtung zur Umspulung von Garnen mit einer Verwiegung einer Vorlagespule.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1498826A (en) * 1923-08-23 1924-06-24 David F Whiteman Tension attachment for winding machines
US2745610A (en) * 1953-05-08 1956-05-15 Reyes Juan Vila Thread tension regulating means for reeling machines and the like

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1498826A (en) * 1923-08-23 1924-06-24 David F Whiteman Tension attachment for winding machines
US2745610A (en) * 1953-05-08 1956-05-15 Reyes Juan Vila Thread tension regulating means for reeling machines and the like

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080093408A1 (en) * 2006-10-24 2008-04-24 Gabor Fabian Wire tensioning arrangement
US7748659B2 (en) * 2006-10-24 2010-07-06 Lincoln Global, Inc. Wire tensioning arrangement

Also Published As

Publication number Publication date
FR2195227A5 (fr) 1974-03-01
IT990145B (it) 1975-06-20
DE2339332A1 (de) 1974-03-07
BE803159A (fr) 1973-12-03
JPS4985330A (fr) 1974-08-15

Similar Documents

Publication Publication Date Title
KR880003044A (ko) 방직기용 실 공급장치
US5056734A (en) Automatic winder
US2586037A (en) Uniform strand tension device
US3874612A (en) Yarn tensioning device
GB706978A (en) Wire unwinding device for winding machines
US2983468A (en) Strand tension control device
US2972452A (en) Brake system for unwinders
US3860186A (en) Method and apparatus for winding yarn from open end spinning devices
GB1268497A (en) A bobbin creel
US3648948A (en) Creel for rotatable bobbins
US7040354B2 (en) Device for regulating the tension of a thread unwound from a bobbin of a bobbin-holder for a leno selvedge apparatus
GB983286A (en) Improvements in or relating to winding and reeling machines
US5355912A (en) Elastic deformation device for automatically controlling the warp tension in a loom
US3054569A (en) Winding device for spinning, doubling and spooling frames
US2984964A (en) Yarn supply means in textile twisting machines
US3497927A (en) Method and apparatus for winding beams
US3080132A (en) Tension control apparatus
GB1517018A (en) Yarn-storing apparatus
US1920111A (en) Cop winding frame
US3933318A (en) Tension control apparatus
US2743880A (en) Tension control system for printing press
US3412949A (en) Cop winder with controlled or programmed yarn tension
US2635821A (en) Grid tension stop device
EP0224797A1 (fr) Dispositif d'alimentation du fil
US3031150A (en) Speed regulating device for a winding machine