US2661913A - Damping means for yarn tension compensating devices - Google Patents

Damping means for yarn tension compensating devices Download PDF

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Publication number
US2661913A
US2661913A US295254A US29525452A US2661913A US 2661913 A US2661913 A US 2661913A US 295254 A US295254 A US 295254A US 29525452 A US29525452 A US 29525452A US 2661913 A US2661913 A US 2661913A
Authority
US
United States
Prior art keywords
yarn
tension
arm
disc
tension compensating
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
US295254A
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English (en)
Inventor
Edward J Heizer
Warwick John
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.)
Specialties Development Corp
Original Assignee
Specialties Development 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 Specialties Development Corp filed Critical Specialties Development Corp
Priority to US295254A priority Critical patent/US2661913A/en
Priority to GB16528/53A priority patent/GB725484A/en
Priority to CH318774D priority patent/CH318774A/de
Priority to FR1083334D priority patent/FR1083334A/fr
Priority to BE522872D priority patent/BE522872A/xx
Application granted granted Critical
Publication of US2661913A publication Critical patent/US2661913A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
    • B65H59/24—Surfaces movable automatically to compensate for variation in tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/50—Diminishing, minimizing or reducing
    • B65H2601/52—Diminishing, minimizing or reducing entities relating to handling machine
    • B65H2601/524—Vibration
    • 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 yarn tension compensating devices, and, more particularly, to improvements for damping the movement of the yarn tension controlling means of devices such as disclosed in United States Patent No. 2,554,493,
  • These devices generally comprise a pair of discs for receiving yarn therebetween to control the tension thereof, a control arm mounted for oscillation responsive to the tension in the yarn for operating means adapted to cause the discs to move apart, and a spring for resisting movement of the arm.
  • a closed mechanical system wherein forces affecting one moving part influence the other moving parts. lt is thus desirable to minimize friction in order to avoid tension variations. This makes the devicesvery sensitive but unstable when extra energy is suddenly introduced into the system.
  • an object of the present invention is to accomplish the Vforegoingv in an extremely simple, practical and'economical mannen 'l
  • Another object is to vprovide damping means 3 Claims. (Cl. 242-150) and one of the elements being movable with the control arm.
  • the foregoing objects may be accomplished by applying a compound between two or more surfaces that have relative motion to each other which compound has a strong retarding action to motion by a force suddenly applied, but does not retard motion due to a slowly applied force and instead acts like a lubricant.
  • silicone grease While various forms of silicone greases hav ing this peculiar property when subjected to shearing may be utilized, a silicone grease has been employed successfully which is supplied by Dow Corning Corporation, Midland, Michigan, under the trade name silicone compound DC-ll. This compound is relatively heavy bodied and is somewhat tacky but has a smooth, grease-like texture. The general characteristics of this compound are as follows:
  • Fig, l is a longitudinal sectional View of a tension compensating device. such asv illustrated and described in Patent No. 2,554,43.
  • Fig.. 2 is a longitudinal sectional view of a tension compensating device such as illustrated and described in Patent No.. 2,629,561;
  • Fig. 3. is a longitudinal sectional View of a tension compensating device such as illustrated and described in Patent No. 2,597,044.
  • a tension compensating device which, for the purpose of understand-ing the present invention, generally comprises a pair of friction discs lll and H between which yarn is adapted tov passv to.
  • the cage and the housing constitute relatively movable elements
  • the end ⁇ sur-- face Qt? of the cage bears against the surface, 2i of the inner face of the housing
  • the arm I 'i is adapted to move the cage.
  • a film of silicone grease is disposed between the. surfaces and El which film acts both as a lubricating and damping meansV in the manner set forth herein.
  • FIG. 2 another type of tension compensating device is shown, which, for the purpose of understanding thc present invention, generally comprises two pairs of friction discs and 3
  • the disc and the housing structure constitute relatively movable elements
  • the circular end surface 42 of the disc d is adjacent the surface.
  • the arm is adapted to effect movement of the disc 40
  • a nlm of silicone grease SG is disposed between the surfaces 42 and 44 which lm acts, as; a dampingI means and like a lubricant in the manner set forth herein.
  • FIG. 3 still another type of tension compensating device. isv sho-wn, which, for the purpose of understanding thepresent invention, generally comprises; apar. of friction discs and 5l between which yarn is adapted to pass to be tensioned,I a base 52, a leaf spring 54 mounted on the base and acting on the disc 5
  • the member 56 carries a shallow cup 8l and the member has a hub. portion 52 facing the cup, the cup and hub portion constituting relatively movable elements.
  • the annular end surface fili of the hub portion is adjacent the upwardly facing surface of the. cup, the, arm is adapted toY effect, turning movement of the cup with respect. to the hub portion, and a. mass of silicone grease SG is stored in the cupv between the surfaces 54 and 65 which mass acts as a damping means and like a lubricant in the manner set forth herein.
  • each of the tension compensating devices illustrated and described herein is similar in that the oscillating arms respond to tension in the yarn and vary the tension applied to thel yarn by the discs, and in each instance the adjacent surfaces having the silicone grease therebetween are. effective to damp relative movement of the elements formed with these surfaces when an attempt is made to. move the Surfaces rapidly with respect to each other, whereu by the, amplitude of oscillation of the arm is minimized and hunting is practically eliminated. ln this manner.. more uniform tension compensation is attainedin that the tensionY put into the yarn varies only slightly under extreme conditions from the predetermined tension to be applied to the yarn.
  • the present invention provides a simple and practical solutionV of a problem inherent. to. coin pensating devicesL of the precision type in particular. Hunting and extreme conditions are thus eliminated in an economical and reliable manner.
  • a yarn tension compensating device the combination of means for receiving yarn therebetween to control the tension thereof, a pair of relatively movable elements each having a surface adjacent the other, oscillating means responsive to the tension in the yarn for moving one of said elements and controlling said first mentioned means, and silicone grease between said surfaces serving to act like a lubricant when said surfaces are moved relatively slowly with respect to each other and serving a damp relative movement of said elements when an attempt is made to move said surfaces rapidly with respect to each other, whereby to minimize the amplitude of oscillation of said oscillating means.
  • a yarn tension compensating device the combination of means for receiving yarn therebetween to control the tension thereof, a pair of relatively movable elements each having a surface adjacent the other, oscillating means including an arm responsive to the tension in the yarn for moving one of said elements and controlling said first mentioned means, and silicone grease between said surfaces serving to act like a lubricant when said surfaces are moved relatively slowly with respect to each other and serving to damp relative movement of said ele- 6 ments when an attempt is made to move said surfaces rapidly with respect to each other, where* by to minimize the amplitude of oscillation of said arm.
  • a yarn tension compensating device the combination of means for receiving yarn therebetween to control the tension thereof, a pair of relatively movable elements each having a surface adjacent the other, means responsive to the tension in the yarn including a pivotally mounted arm and a return spring for moving one of said elements and controlling said first mentioned means, and silicone grease between said surfaces serving to act like a lubricant when said surfaces are moved relatively slowly with respect to each other and serving to damp relative movement of said elements when an attempt is made to move said surfaces rapidly with respect to each other and to damp the reaction of said spring, whereby to minimize the amplitude of y oscillation of said arm and hunting of said first mentioned means.

Landscapes

  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Vibration Prevention Devices (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
US295254A 1952-06-24 1952-06-24 Damping means for yarn tension compensating devices Expired - Lifetime US2661913A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US295254A US2661913A (en) 1952-06-24 1952-06-24 Damping means for yarn tension compensating devices
GB16528/53A GB725484A (en) 1952-06-24 1953-06-16 Damping means for yarn tension compensating devices
CH318774D CH318774A (de) 1952-06-24 1953-06-24 Garnspannungsausgleichsvorrichtung
FR1083334D FR1083334A (fr) 1952-06-24 1953-09-14 Amortisseur pour dispositifs compensateurs de la tension des fils
BE522872D BE522872A (en(2012)) 1952-06-24 1953-09-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US295254A US2661913A (en) 1952-06-24 1952-06-24 Damping means for yarn tension compensating devices

Publications (1)

Publication Number Publication Date
US2661913A true US2661913A (en) 1953-12-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
US295254A Expired - Lifetime US2661913A (en) 1952-06-24 1952-06-24 Damping means for yarn tension compensating devices

Country Status (5)

Country Link
US (1) US2661913A (en(2012))
BE (1) BE522872A (en(2012))
CH (1) CH318774A (en(2012))
FR (1) FR1083334A (en(2012))
GB (1) GB725484A (en(2012))

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930543A (en) * 1951-04-26 1960-03-29 Leesona Corp Winding machine
US2965200A (en) * 1956-06-18 1960-12-20 Gen Motors Corp Damper for valve control
US2998868A (en) * 1958-03-31 1961-09-05 Contraves Ag Damping device
US3160231A (en) * 1964-02-21 1964-12-08 Model Products Corp Rotary turntable
US3459389A (en) * 1966-02-15 1969-08-05 Benninger Ag Maschf Yarn tensioning device
US4535609A (en) * 1983-03-21 1985-08-20 H. Stoll Gmbh & Company Yarn tension device for a flat knitting machine
US6095449A (en) * 1995-09-20 2000-08-01 Iro Ab Device and method to control yarn tension and yarn feeder
US6131841A (en) * 1998-03-02 2000-10-17 Jang; Byung In Yarn supply apparatus for textile machines
US6138967A (en) * 1997-03-07 2000-10-31 Fujitsu Limited Foot structure for apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2507182A (en) * 1947-04-26 1950-05-09 Eastman Kodak Co Viscous fluid shuter retard mechanism
US2554493A (en) * 1947-08-22 1951-05-29 Specialties Dev Corp Yarn tensioning device
US2588914A (en) * 1950-07-14 1952-03-11 Gen Electric Retarded release shock lock
US2597044A (en) * 1950-03-28 1952-05-20 Specialties Dev Corp Yarn tension control device
US2629561A (en) * 1949-12-30 1953-02-24 Specialties Dev Corp Yarn tensioning device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2507182A (en) * 1947-04-26 1950-05-09 Eastman Kodak Co Viscous fluid shuter retard mechanism
US2554493A (en) * 1947-08-22 1951-05-29 Specialties Dev Corp Yarn tensioning device
US2629561A (en) * 1949-12-30 1953-02-24 Specialties Dev Corp Yarn tensioning device
US2597044A (en) * 1950-03-28 1952-05-20 Specialties Dev Corp Yarn tension control device
US2588914A (en) * 1950-07-14 1952-03-11 Gen Electric Retarded release shock lock

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930543A (en) * 1951-04-26 1960-03-29 Leesona Corp Winding machine
US2965200A (en) * 1956-06-18 1960-12-20 Gen Motors Corp Damper for valve control
US2998868A (en) * 1958-03-31 1961-09-05 Contraves Ag Damping device
US3160231A (en) * 1964-02-21 1964-12-08 Model Products Corp Rotary turntable
US3459389A (en) * 1966-02-15 1969-08-05 Benninger Ag Maschf Yarn tensioning device
US4535609A (en) * 1983-03-21 1985-08-20 H. Stoll Gmbh & Company Yarn tension device for a flat knitting machine
US6095449A (en) * 1995-09-20 2000-08-01 Iro Ab Device and method to control yarn tension and yarn feeder
US6138967A (en) * 1997-03-07 2000-10-31 Fujitsu Limited Foot structure for apparatus
US6216991B1 (en) 1997-03-07 2001-04-17 Fujitsu Limited Foot structure for apparatus
US6131841A (en) * 1998-03-02 2000-10-17 Jang; Byung In Yarn supply apparatus for textile machines

Also Published As

Publication number Publication date
GB725484A (en) 1955-03-02
FR1083334A (fr) 1955-01-07
CH318774A (de) 1957-01-31
BE522872A (en(2012)) 1955-12-09

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