US2922598A - Thread tensioning device - Google Patents

Thread tensioning device Download PDF

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Publication number
US2922598A
US2922598A US513408A US51340855A US2922598A US 2922598 A US2922598 A US 2922598A US 513408 A US513408 A US 513408A US 51340855 A US51340855 A US 51340855A US 2922598 A US2922598 A US 2922598A
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US
United States
Prior art keywords
thread
elements
passageway
links
drag
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
US513408A
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English (en)
Inventor
Heijnis James Watt Ijsbrand
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.)
Akzona Inc
Original Assignee
American Enka Corp
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 Enka Corp filed Critical American Enka Corp
Application granted granted Critical
Publication of US2922598A publication Critical patent/US2922598A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D63/00—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
    • 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
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/225—Mechanical characteristics of stretching apparatus
    • 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

  • This invention relates -.to thread or yarn tensioning devices and more particularly to devices which will impose a substantially constant drag on a running thread irrespective of the tension of the yarn entering the device.
  • Figure l is a perspective view of a thread tensioner according to the present invention.
  • a desired drag on a r Figure 2 is a view in side elevation of a somewhat modified version of the thread tensioner of Figure 1, the housing being removed for convenience of illustration;
  • Figure 3 is a perspective view of another modified type of thread tensioner also shown with the housing removed for convenience of illustration.
  • the numeral 10 indicates a housing which is hollow and in which two brake shoes 11 and 12 are suspended on pivoted parallel links 13, 14, 15, 16, 17, 18, 19 and 20.
  • the links 15 and 16 are pivoted at 21 to the top of the housing and the links 13 and 14 are similarly pivoted at 22.
  • pivots 23 and 24 accommodate pairs of links 17-18 and 19-20 respectively.
  • the links are pivotally connected to the respective shoes.
  • the facing surface of the brake shoes or elements 11 and 12 are provided with teeth 25 which are staggered so that they interdigitate more as the shoes 11 and 12 swing toward one another and less as the elements swing away from 2,922,598 Patented Jan. 26, 1960 one another.
  • an aperture at 26 through which thread is admitted to the drag device. This thread is led through a forked tooth 27 at the right hand end of the shoe 12 in between the teeth 25 which define a tortuous passageway coaxial with the aperture at 26 and normal to the axes 21 to 24 inclusive and then out through a notch in the tooth 28 at the left hand end of the shoe 11.
  • the suspension of the shoes 11 and 12 can perhaps be better understood by reference to Figure 2 in which the housing 10 is omitted for convenience of illustration. It can be seen that in addition to the parts already described there is a strap 29 interconnecting the pivot 30 for the links 15 and 16 to the pivot 31 for the links 19 and 20 so that movement of one causes movement of the other in the same direction along the axis of a thread passageway defined therebetween. It is to be understood that all of the links 13 to 20 inclusive are pivoted at both ends and are of equal length so that the space defined among the pivots is always a parallelogram.
  • the shoes 11 and 12 are always in parallelism irrespective of the degree of arcuate or swinging movement which they may make both toward one another and along the axis of the thread passageway extending between the respective braking surfaces. It will be evident of course from the use of an interconnecting strap such as shown at 2,9 that the shoes 11, 12 always shift an equal amount and in the same direction longitudinally, as well as an equal amount but in opposite directions laterally.
  • a spring 32 is connected to the pivot 30 and acts to bias the pivot for movement in a counterclockwise direction about the pivot 21. This has a tendency to move the shoes together so that the teeth 25 are resiliently :biased toward maximum interdigitation.
  • the spring 32 is mounted for adjustment of its tension. To this end the spring 32 is held at its end opposite to the end engaging the pivot 30 by an anchor pin 33 projecting diametrically through a threaded bolt 34 which is held in a threaded anchor collar 35.
  • the collar 35 is attached to and projects from a shoe 36 which is mounted for arcuate movement in a slot 37.
  • the shoe is provided with a set-screw 38 for locking it in a desired position of adjustment.
  • a knurled head 39 is provided at the end of the bolt 34. It can be seen that by loosening the set screw 38 and moving the shoe 36 in the track 37 that the effective thrust of the spring 32 on the pivot 30 can be altered. In addition to that the number of coils of thespring 32 that are available to work may be changed by turning the bolt 34 to change the position of the pin 33 so that more or less .coils of the spring are included in the thrust pattern. While it is not shown in the drawing, the track 37 is intended to be mounted on an appropriate part of the housing such as an inner wall thereof.
  • the spring 40 is held by a bolt 41 similar to the bolt 34.
  • Bolt 41 is held by a plate 42 which is secured to an arm 43.
  • the arm 43 is adjustably mounted on the housing 10 and hence can be moved to impose greater or lesser tension on the links 15, 16 as may be required.
  • An interconnecting member or strap 60 connects the pivot 49 to the end of a rod 59 which is similar to the other rods 59 except that it is coaxial with the pivot 56 and is not cantilever in that it is pivotally connected at 61 to the end of the piece60 opposite to the pivot at 49.
  • a cable 62 extends from the pivot 49 over a sheave 63 to a weight 64. Between the @end of the cable 62 and the weight 64 there is interposed a coil spring 65. The weight 64 and the coil spring 65 tend to swing the links 44 and 45 clockwise about their pivots as viewed in Figure 3. This movement tends to rock the links 52 and 53 anticlockwise about their pivots with the effect of moving the rods 59 away from rods 51.
  • a thread tensioning apparatus comprising first and second elements, said elements including co-acting braking surfaces defining therebetween a thread passageway through which thread is passed, the magnitude of the braking surfaces being a function of relative element position, means mountingsaid first element for swinging movement both toward, andv along the axis of said passageway, means mountingsaid second element for swinging movement both toward and along the axis of said passageway in parallelism with said first element, means interconnecting said elements whereby movement of one causes movement of the other in the same direction along the axis of said passageway, and means resiliently biasing said elements toward a maximum braking position to tensionthread passed through said passageway.
  • a thread tensioning apparatus as set forth in claim 1 and further comprising means for varying the tension of said biasing means.
  • a thread tensioning apparatus as set forth in claim 1 and further comprising means for altering the effective thrust of said biasing means.
  • Thread tensioning apparatus comprising a first element, parallel links mounting said first element for swinging movement, a second element, parallel links mounting said second element for swinging movement in parallelism with said first element, a strap interconnecting said elements so that the movement of one will be tracked by a movement of the other, said elements including c0- acting means defining a tortuous thread passagewaythereamong normal to the axis of swing of said elements, the degree of tortuousness being a function of relative element position, and means acting on one of said elements resiliently to bias said elements toward the position of maximum tortuousness for tensioning thread running in said passageway.
  • Thread tensioning apparatus comprising a housing, a first element, parallel links mounting said first element for swinging movement, a second element, parallel links mounting said second element for swinging movement in parallelism with said first element, a strap interconnecting said elements so that movement of one tracks movement of the other, a thread guiding aperture in said housing, said elements including co-acting means defining a tortuous thread passageway thereamong normal to the axis of swing of said elements and coaxial with the axis of said aperture, the degree of tortuousness of said thread passageway being a function of relative element position, and means acting on one of said elements resiliently to bias the said elements toward the position of maximum tortuousness for tensioning thread running in said passageway.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Braking Arrangements (AREA)
US513408A 1954-06-11 1955-06-06 Thread tensioning device Expired - Lifetime US2922598A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL188303A NL83939C (enrdf_load_stackoverflow) 1954-06-11 1954-06-11

Publications (1)

Publication Number Publication Date
US2922598A true US2922598A (en) 1960-01-26

Family

ID=38525113

Family Applications (1)

Application Number Title Priority Date Filing Date
US513408A Expired - Lifetime US2922598A (en) 1954-06-11 1955-06-06 Thread tensioning device

Country Status (5)

Country Link
US (1) US2922598A (enrdf_load_stackoverflow)
BE (1) BE537703A (enrdf_load_stackoverflow)
ES (1) ES222223A1 (enrdf_load_stackoverflow)
GB (1) GB780771A (enrdf_load_stackoverflow)
NL (1) NL83939C (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4507646A (en) * 1981-11-16 1985-03-26 P.S. Paging System, A.B. Radio communication system
EP0145455A3 (en) * 1983-12-07 1987-04-22 Toray Industries, Inc. False-twist textured yarn of polyamide and method and apparatus for producing the same
US4927093A (en) * 1988-01-15 1990-05-22 Gebrueder Loepfe Ag Method for braking a moving thread-like material and thread brake for carrying out said method
US20090140092A1 (en) * 2007-12-04 2009-06-04 American Linc Corporation Yarn tension control device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7064A (en) * 1850-02-05 Improvement in machinery for spooling
US1064292A (en) * 1912-04-24 1913-06-10 Thomas Smith Tension device.
FR545845A (fr) * 1922-01-13 1922-10-21 Tendeur de fils pour machines à bobiner et d'autres machines de l'industrie textile
CH195301A (de) * 1937-03-15 1938-01-31 Andreoli Kaiser Pi Vorrichtung zur Verhinderung des Wundwerdens beim Handstricken durch Einschneiden des Garnes am Finger.
US2160763A (en) * 1937-03-25 1939-05-30 Universal Winding Co Tension device for winding and like machines
DE741807C (de) * 1941-05-01 1943-11-17 Dornbusch & Co Vorrichtung zum Breithalten von in Maschinen, wie z. B. Praegekalandern, einlaufenden Werkstoffbahnen, insbesondere Papierbahnen
US2615656A (en) * 1949-09-10 1952-10-28 Strake Lambertus Te Yarn brake

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7064A (en) * 1850-02-05 Improvement in machinery for spooling
US1064292A (en) * 1912-04-24 1913-06-10 Thomas Smith Tension device.
FR545845A (fr) * 1922-01-13 1922-10-21 Tendeur de fils pour machines à bobiner et d'autres machines de l'industrie textile
CH195301A (de) * 1937-03-15 1938-01-31 Andreoli Kaiser Pi Vorrichtung zur Verhinderung des Wundwerdens beim Handstricken durch Einschneiden des Garnes am Finger.
US2160763A (en) * 1937-03-25 1939-05-30 Universal Winding Co Tension device for winding and like machines
DE741807C (de) * 1941-05-01 1943-11-17 Dornbusch & Co Vorrichtung zum Breithalten von in Maschinen, wie z. B. Praegekalandern, einlaufenden Werkstoffbahnen, insbesondere Papierbahnen
US2615656A (en) * 1949-09-10 1952-10-28 Strake Lambertus Te Yarn brake

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4507646A (en) * 1981-11-16 1985-03-26 P.S. Paging System, A.B. Radio communication system
EP0145455A3 (en) * 1983-12-07 1987-04-22 Toray Industries, Inc. False-twist textured yarn of polyamide and method and apparatus for producing the same
US4927093A (en) * 1988-01-15 1990-05-22 Gebrueder Loepfe Ag Method for braking a moving thread-like material and thread brake for carrying out said method
US20090140092A1 (en) * 2007-12-04 2009-06-04 American Linc Corporation Yarn tension control device
US7806358B2 (en) * 2007-12-04 2010-10-05 American Linc Corporation Yarn tension control device

Also Published As

Publication number Publication date
BE537703A (enrdf_load_stackoverflow) 1955-05-14
ES222223A1 (es) 1956-01-01
GB780771A (en) 1957-08-07
NL83939C (enrdf_load_stackoverflow) 1956-08-15

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