US3129902A - Thread feed control device for textile machinery - Google Patents

Thread feed control device for textile machinery Download PDF

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Publication number
US3129902A
US3129902A US181102A US18110262A US3129902A US 3129902 A US3129902 A US 3129902A US 181102 A US181102 A US 181102A US 18110262 A US18110262 A US 18110262A US 3129902 A US3129902 A US 3129902A
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US
United States
Prior art keywords
thread
baseplate
even surface
smooth even
guide members
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
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US181102A
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English (en)
Inventor
Juillard Yves
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.)
Alsacienne de Constructions Mecaniques SA
Original Assignee
Alsacienne de Constructions Mecaniques SA
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02H—WARPING, BEAMING OR LEASING
    • D02H13/00—Details of machines of the preceding groups
    • 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
    • B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
    • 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
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/10—Actuating means linear
    • B65H2555/13—Actuating means linear magnetic, e.g. induction motors
    • 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 an improved device for con thread tension in many cases interfere with the proper performance of subsequent processing steps to which the thread may have to be subjected or may be objectionable for various other reasons. It is an object of this invention to provide an improved thread feed control device of very simple and yet effective construction that will act to control the tension in a thread despite large acceleration and deceleration forces to which the thread may be subjected. Other objects are to provide such a thread control device that will be very easily adjustable; that will operate effectively even in case of a knot or nep or other irregularity at a point of the thread; and one that can conveniently and efiiciently be associated with a conventional stopper device for arresting the feed of thread or performing some other safety function in case of thread breakage.
  • a more specific object is to provide an improved thread feed or tension regulator device especially adapted for use in connection with the weft shooting operations in a fast weaving frame or loom.
  • the weft yarn is periodically exposed to large accelerations and decelerations.
  • the pick of Weft y-arn initially at zero velocity is first accelerated and then decelerated as it is carried by one needle from outside the shed to a point midway across the breadth of the shed at which it is to be transferred to or picked off by the other needle.
  • a thread feed control or regulator device comprising means providing a smooth surface, thread guide means engageable with the thread to define a path of thread displacement generally parallel to said surface, at least one low-inertia presser element supported above said surface and engaging a side of the thread remote from said surface, and means biasing said presser element towards said surface with a predetermined moderate force whereby in periods of thread acceleration the resulting thread tension overcomes the biasing force to lift the presser element off said surface while in periods of thread deceleration the resulting drop in thread tension allows the presser element to press the thread down against the surface thereby maintaining the thread tension beyond the control device at a positive value.
  • FIG. 1 is a perspective front view of the improved thread feed control device or tension regulator shown in the condition assumed thereby during a period of deceleration of the thread;
  • FIG. 2 is a front view of the same device in the condition assumed during a period of acceleration
  • FIG. 3 is a view similar to that of FIG. 2 in the condition assumed on breakage of the thread.
  • FIG. 4 is a sectional view on the line IVIV of FIG. 3.
  • the device illustrated comprises a baseplate 401 arranged to be mounted at any convenient position on the textile machine with which the device is to be used. While the plate 401 is here shown vertical it is to be distinctly understood that this is by no means essential and that the plate might well be mounted horizontal or in any other angular position. Hence also it is expressly indicated at this point that terms indicating spatial relationships such as above, below and the like, as used in the specification and the claims, are to be understood in a relative rather than in an absolute sense and cannot be deemed to limit the scope of the invention.
  • a table plate 402 Secured to the baseplate 401 near one side is a table plate 402 having a smooth upper surface normal to the surface of the baseplate 401. Projecting from the plate 401 at a common distance from the surface of table 402 and spaced in a direction parallel to said surface are a number of, herein three, thread guides 403, 404, 405 in the conventional form of hooks or eyes through which is threaded a yarn 407 the feed of which is to be regulated by the device.
  • a supporting plate or bar 413 Projecting from the baseplate 401 above the row of guides and positionally adjustable on the baseplate through means to be presently described is a supporting plate or bar 413 having secured to the lower surface by any suitable means, e.g. screws, one end of each of two presser elements in the form of light weight leaf springs 411 and 412 of low spring rate, which are curved downwards to project in between the guides 403 and 404, and guides 404 and 405 respectively, with the rounded lower ends of said leaf springs bearing resiliently against the upper surface of table plate 402 as shown, under light adjustable spring pressure.
  • any suitable means e.g. screws
  • the plate 413 may be made of a ferromagnetic material and retained in an adjustable position on baseplate 401 by the attraction of a pair of magnetic pole members 414, 415.
  • the magnetic members 414, 415 are permanent magnets and are received in suitable spaced holes formed through baseplate 401 and in cup-like socket-members 416, 417 secured to the back of the baseplate with screws 418 in line with the holes, in such a manner that the front faces of the magnetic members 414, 415 lie flush with the front surface of baseplate 401.
  • each of the leaf springs 411, 412 against the thread 407 and table surface 402 can quickly and easily be adjusted by simply shifting the supporting bar 413 across the faces of the magnets 414, 415, with fine adjustment being possible by selective action on screws 421, 422.
  • the arrangement permits of differential or independent adjustment of the pressure of each spring, as by positioning the bar 413 in an angled position nonparallel to the surface 402 eg as shown in chain lines in FIG. 2.
  • a generally conventional thread break sensing device in the form of a microswitch 431 having an actuating arm 432 projecting so as to be engaged by the outgoing thread 407.
  • the spring characteristics of the presser elements or leaf springs, 411, 412 are so selected and the position of their support 413 is so adjusted, that the pressureexerted by said elements against the surface of table 402 is just sufficient to clamp the thread 407 to said surface during periods where the thread is running slack, as during periods of deceleration in the thread feed displacement, so that during such periods the kinetic energy given up by the decelerating thread is absorbed as friction with the clamping surfaces of the table and presser elements.
  • the pressure is so light that during periods of increased thread tension, as when the thread is accelerating, the tension force will overcome the spring pressure and lift the lower ends of the presser elements off the surface of table 402.
  • the thread is accelerating as by being positively pulled towards the left in the direction of arrow 1 in FIG. 2, by a pulling force applied to the thread at a point beyond the control device, e.g. by a weftshooting needle in a loom of the type hereabove described.
  • the thread is placed under substantial tension and the presser elements 411, 412 are moved away from the surface 402, as shown'in FIG. 2, so that the thread is no longer clamped between the opposing surfaces of the table and the presser elements, but is only subjected to the very low friction exerted on its upper side by the rounded ends of the leaf springs.
  • the switch finger 432 is released to actuate the switch for stopping the thread delivery and/or effecting any other desired function.
  • a tension device for a weft thread to be supplied to a shuttleless weaving loom comprising a stationary base plate, a table portion projecting from said baseplate and providing a smooth even surface normal to said baseplate, a plurality of guide members projecting from said baseplate and engageable with a thread to define a straight path of thread displacement extending in spaced parallel relationship to said smooth even surface, an adjustable bar member supported from said baseplate above said guide members, said bar member having a face opposite said smooth even surface of said table portion, a pair of leaf springs of light spring rate having one of their ends attached to longitudinally spaced points of said face of said bar member and having their free ends projecting toward said smooth even surface between two successive guide members, said leaf springs having rounded free end portions engageable with said thread whereby to urge the thread sections extending between the individual guide members toward said smooth even surface and force the thread to follow a sinuous path, and means for adjusting the position of said bar member both in over-all spacing relative to said smooth even surface and in angular relation with respect thereto.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Knitting Machines (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
US181102A 1961-03-22 1962-03-20 Thread feed control device for textile machinery Expired - Lifetime US3129902A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR856395A FR1293009A (fr) 1961-03-22 1961-03-22 Frein de fil pour machines textiles

Publications (1)

Publication Number Publication Date
US3129902A true US3129902A (en) 1964-04-21

Family

ID=8751387

Family Applications (1)

Application Number Title Priority Date Filing Date
US181102A Expired - Lifetime US3129902A (en) 1961-03-22 1962-03-20 Thread feed control device for textile machinery

Country Status (7)

Country Link
US (1) US3129902A (it)
BE (1) BE615212A (it)
CH (1) CH383896A (it)
ES (1) ES275570A1 (it)
FR (1) FR1293009A (it)
GB (1) GB988523A (it)
NL (1) NL276243A (it)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215167A (en) * 1963-04-08 1965-11-02 Draper Corp Loom filling stop motion
US3282303A (en) * 1962-01-03 1966-11-01 Brelic Internat Inc Weft stop motions for shuttleless looms
US3340903A (en) * 1964-10-10 1967-09-12 Golobart Ramon Balaguer Tensioning and regulating device for the passage of weft threads of different thickness
US4027705A (en) * 1975-04-16 1977-06-07 Vyzkumny Ustav Bavlnarsky Strand-braking apparatus
US4169564A (en) * 1976-07-30 1979-10-02 Schubert & Salzer Yarn guide for use in winding yarn on a package
US4307850A (en) * 1980-01-29 1981-12-29 Singer Hans S Strand tensioning apparatus
US4655379A (en) * 1985-05-02 1987-04-07 Essex Group, Inc. Wire transport conduit
US5002098A (en) * 1989-02-16 1991-03-26 Picanol N.V. Device for braking a weft thread in a weaving machine
FR2710659A1 (fr) * 1993-09-29 1995-04-07 Nuovo Pignone Spa Frein de fil de trame amélioré pour métier à tisser sans navette.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US680682A (en) * 1900-01-30 1901-08-20 Alfred Baldwin Tension device for loom-shuttles.
GB191028003A (en) * 1910-12-02 1911-11-30 Alfred Smith Improvements appertaining to Machines for Winding Yarns or Threads, Cords and the like.
US1580960A (en) * 1923-08-06 1926-04-13 Litchfield Shuttle Company Yarn-tensioning device for loom shuttles
US1627292A (en) * 1926-04-23 1927-05-03 Harry E Matthews Electric stop motion for textile machines
US2225154A (en) * 1937-08-13 1940-12-17 Harry H Canterbury Mouthpiece facing machine
US2977996A (en) * 1955-05-02 1961-04-04 Ancet Victor Marie Joseph Weft control mechanism
US3020934A (en) * 1960-03-28 1962-02-13 Mack D Waters Tensioning attachment for loom shuttles

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US680682A (en) * 1900-01-30 1901-08-20 Alfred Baldwin Tension device for loom-shuttles.
GB191028003A (en) * 1910-12-02 1911-11-30 Alfred Smith Improvements appertaining to Machines for Winding Yarns or Threads, Cords and the like.
US1580960A (en) * 1923-08-06 1926-04-13 Litchfield Shuttle Company Yarn-tensioning device for loom shuttles
US1627292A (en) * 1926-04-23 1927-05-03 Harry E Matthews Electric stop motion for textile machines
US2225154A (en) * 1937-08-13 1940-12-17 Harry H Canterbury Mouthpiece facing machine
US2977996A (en) * 1955-05-02 1961-04-04 Ancet Victor Marie Joseph Weft control mechanism
US3020934A (en) * 1960-03-28 1962-02-13 Mack D Waters Tensioning attachment for loom shuttles

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3282303A (en) * 1962-01-03 1966-11-01 Brelic Internat Inc Weft stop motions for shuttleless looms
US3215167A (en) * 1963-04-08 1965-11-02 Draper Corp Loom filling stop motion
US3340903A (en) * 1964-10-10 1967-09-12 Golobart Ramon Balaguer Tensioning and regulating device for the passage of weft threads of different thickness
US4027705A (en) * 1975-04-16 1977-06-07 Vyzkumny Ustav Bavlnarsky Strand-braking apparatus
US4169564A (en) * 1976-07-30 1979-10-02 Schubert & Salzer Yarn guide for use in winding yarn on a package
US4307850A (en) * 1980-01-29 1981-12-29 Singer Hans S Strand tensioning apparatus
US4655379A (en) * 1985-05-02 1987-04-07 Essex Group, Inc. Wire transport conduit
US5002098A (en) * 1989-02-16 1991-03-26 Picanol N.V. Device for braking a weft thread in a weaving machine
FR2710659A1 (fr) * 1993-09-29 1995-04-07 Nuovo Pignone Spa Frein de fil de trame amélioré pour métier à tisser sans navette.
US5483997A (en) * 1993-09-29 1996-01-16 Nuovopignone - Industrie Meccaniche E Fonderia S.P.A. Blade type weft brake for a shuttleless loom
BE1008614A3 (fr) * 1993-09-29 1996-06-04 Nuovo Pignone Spa Frein de trame ameliore pour metier a tisser sans navette.

Also Published As

Publication number Publication date
BE615212A (fr) 1962-07-16
FR1293009A (fr) 1962-05-11
CH383896A (fr) 1964-10-31
GB988523A (en) 1965-04-07
NL276243A (it)
ES275570A1 (es) 1962-05-16

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