US3789631A - Yarn tension control device - Google Patents

Yarn tension control device Download PDF

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Publication number
US3789631A
US3789631A US00224424A US3789631DA US3789631A US 3789631 A US3789631 A US 3789631A US 00224424 A US00224424 A US 00224424A US 3789631D A US3789631D A US 3789631DA US 3789631 A US3789631 A US 3789631A
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US
United States
Prior art keywords
yarn
tension
tension control
control lever
block
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
US00224424A
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English (en)
Inventor
J Deniega
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.)
DURKIN WILLIAM N
Stop Motion Devices Corp
IRO Inc
Original Assignee
Stop Motion Devices 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 Stop Motion Devices Corp filed Critical Stop Motion Devices Corp
Application granted granted Critical
Publication of US3789631A publication Critical patent/US3789631A/en
Assigned to DURKIN, WILLIAM N., TAYLOR, G. BRANDT reassignment DURKIN, WILLIAM N. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: TAYLOR G. BRANDT
Assigned to IRO, Inc. reassignment IRO, Inc. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: VANGUARD SUPREME MACHINE CORPORATION A NC CORP.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles

Definitions

  • a yarn tension control device having yarn tension sensing means adapted to support the travelling yarn, which sensing means is secured to a shaft which terminates in a crank portion.
  • Spring means connected at one end thereof to the crank portion urge the yarn tension sensing means into a normal yarn supporting position against the resistance of the yarn tension.
  • the other end of the spring is secured to the free end of a tension control lever whose opposite end is mounted for pivotal movement.
  • the lever is straddled by a channeled block and has a bottom curved surface which defines a cam follower and cam combination with the block, whereby longitudinal movement of the block causes pivotal movement of the lever for varying the tension on the spring.
  • FIG. 2 is a front perspective view thereof, viewed from the right, with portions removed for purposes of illustration;
  • FIG. 3 is an exploded view, in perspective, of the various components, forming part ofthe tension adjustment mechanism in accordance with the invention
  • FIG. 4 is a front elevational view of the device, showing the yarn tension sensing means in the down position and with parts broken away for purposes of illustration;
  • FIG. 6 is a view similar to FIG. 4, on an enlarged scale, with the housing cover removed for purposes of illustration;
  • FIG. 7 is a left side view of the device as shown in FIG. 4; and I FIG. 8 is a sectional view taken along line 8-8 of FIG. 4, shown in an enlarged scale.
  • Bracket 20 Extending laterally from left side wall 18 of housing 12 is a bracket 20 provided with a removable bracket cover 22.
  • a shaft 24 is journalled in wall 18 and depending end portion or strip 26 of bracket 20.
  • Shaft 24 has secured thereto yarn tension sensing member 28 best shown in perspective in FIG. 3.
  • Member 28 comprises laterally spaced tension sensing arms 30, 32 and 34 held in spaced relation by transverse members 36 and 38, the latter being fixedly secured to shaft 24.
  • External sensing arms 30 and 34 are partly encased, along their free ends, .with porcelain sheath shaped to provide smooth seats for engagement with the travelling yarn.
  • Shaft 24 terminates inwardly of housing 12 in a crank portion 40, to the end of which is secured one end of spring 42, the other end being secured in notch 44 of tension control lever 46.
  • spring 42 biases shaft 24 in a clockwise direction (viewing FIG. 2) corresponding to the urging of yarn tension sensing member 28 and its sensing arms 30, 32 and 34 in an upward direction until transverse member 36 engages a stop 68 projecting inwardly of depending strip 26.
  • crank portion 40 Upon application of downward force to tension sensing arms 30, 32 and 34 (in response to increased yarn tension as described hereafter) crank portion 40 will reach dead center position, after which the spring will bias shaft 24 into further counterclockwise rotation until tension sensing arm 34 engages a stop projecting outwardly of depending strip 26, defining the bottom position of sensing member 28 which is shown in FIG. 4.
  • Another shaft 48 is journalled in wall 18 and depending strip 26 of bracket 20, said shaft having secured thereto a generally elongated rectangular feeler member 50 provided atits rear end with a light counterweight 52.
  • Feeler member 50 comprises parallel arms 54 and 56 joined at their forward ends by transverse portion 58. As best seen in FIGS. 1 and 2, arms 54 and 56 are movable between thetension sensing arms of tension sensing member 28. The dimensions of the forwardly extending portions of feeler member 50 are such that in spite of the counterweight 52, the feeler member is urged into clockwise movement viewing FIG. 1, i.e., corresponding to downward movement of the forward portions of arms 54 and S6.
  • Feeler member carrying shaft 48 terminates inwardly of housing 12 whereat it carries a segmented electrical contact member 60 rotatable therewith.
  • Bracket cover 22 is provided with a stationary wire formation 62 comprising spaced inverted V portions 64 and 66 whose apexes define guide means for the yarn.
  • tension sensing arms 30, 32 and 34 are maintained by spring 42 in their uppermost position defined by the engagement of transverse member 36 with stop 68, the yarn travelling from the supply thereof is guided over the sensing arms by wire formation 62 and the yarn supports arms 56 and 58 of feeler member 50.
  • tension sensing member 28 moves downwardly, causing rotation of crank portion 40 until the dead center position thereof, beyond which the spring will urge member 28 onto its down position defined by the engagement of tension sensing arm 34 and stop 70 as shown by the full lines in FIG. 7, permitting the yarn to slip off before breakage.
  • feeler member 50 When, as described above, increased yarn tension causes slippage of the yarn from sensing member 28, as shown by the dashed lines in FIG. 8, feeler member 50, being no longer supported by the yarn, is biased into counterclockwise position, viewing FIG. 8, until bottom surface 80 of contact member 60 engages contact strip 78 which also defines a yielding stop for the movement of feeler member 50. A further stop is defined by engagement of rear portion of arms 54 and 56 with bracket 20.
  • the engagement of contact member 60 with contact strip 72 completes a circuit through signal light 82 and to tenninal 84. It will be understood that electrical connections from terminal 84 to conventional electrical control means will be operative, upon completion of said circuit, to discontinue rotation of the knitting machine to which yarn Y is being supplied and to light lamp 82.
  • Block 90 therefore defines, in combination with tension control lever 46, a cam and cam follower, respectively, for adjusting the tension on spring 42.
  • a pin 112 projects forwardly of block 90 and defines an indicator which cooperates with the calibrations on sight window 16 so that the device can be selectively preadjusted to a desired tension and so that a plurality of devices mounted on the same machine can all be adjusted to the same preselected tension.
  • curvature of bottom surface 88 can be chosen to correspond to any desired relationship between the lateral movement of the indicator block and the corresponding increases in tension beyond which the stop motion is intended to be operative.
  • Housing 12 is provided with bracket 114 adapted for securement to a carrier having a toggle clamp so that yarn tension control device 10 can be mechanically and electrically connected to the knitting machine in a manner similar to that shown in U.S. Pat. No. 3,257,518 assigned to the assignee hereof.
  • Yarn tension control means for controlling the tension in yarn travelling from a source of supply to a work station on a knitting machine comprising:
  • atension control lever having opposite ends, the other end of said spring being secured adjacent one end of said lever, and said lever being mounted for pivotal movement adjacent the other end thereof,
  • Yarn tension control means in accordance with claim 5, wherein there is provided a feeler adapted to be supported by the travelling yarn when the latter is normally supported by said yarn tension sensing means, said feeler being movable in response to yarn absence to a position in which it is operative to cause the activation of a stop motion for interrupting the knitting machine drive.
  • said tension control lever has a curved bottom surface imparting to said lever increasing height from said other end thereof to said one end thereof, and wherein said means operatively related to said tension control lever comprises a block having a channel straddling said lever and engaging said curved bottom surface, whereby said block and control lever define a cam and cam follower, respectively, wherein predetermined movement of said block causes predetermined pivotal movement of said tension control lever.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
US00224424A 1972-02-08 1972-02-08 Yarn tension control device Expired - Lifetime US3789631A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22442472A 1972-02-08 1972-02-08

Publications (1)

Publication Number Publication Date
US3789631A true US3789631A (en) 1974-02-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00224424A Expired - Lifetime US3789631A (en) 1972-02-08 1972-02-08 Yarn tension control device

Country Status (6)

Country Link
US (1) US3789631A (es)
JP (1) JPS5131863B2 (es)
ES (1) ES407953A1 (es)
FR (1) FR2171720A5 (es)
GB (1) GB1409322A (es)
IT (1) IT967882B (es)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851502A (en) * 1973-03-05 1974-12-03 Control Switch Inc Yarn detector switch-upper
US3867592A (en) * 1972-12-14 1975-02-18 Antonio Sala Quellos Stop motion switch for controlling thread tension in a textile machine
USD246292S (en) * 1975-02-25 1977-11-08 Trip-Lite Ltd. Yarn fault detector
US20040188232A1 (en) * 2001-04-10 2004-09-30 Birger Johansson Thread detector
WO2011059492A1 (en) * 2009-11-16 2011-05-19 American Linc, Llc Calibrated yarn tensioner, textile machine, and method for tensioning a continuously running yarn
CN103818779A (zh) * 2014-02-27 2014-05-28 浙江日发纺织机械股份有限公司 数码纱线张力控制器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103966758B (zh) * 2013-01-24 2016-02-24 陈仁惠 针织机停车器警示控制装置
CN108589002B (zh) * 2018-07-13 2023-08-11 慈溪太阳洲纺织科技有限公司 一种氨纶输纱器

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US706840A (en) * 1901-06-26 1902-08-12 E H Godshalk Automatic stop-motion for knitting-machines.
US1358483A (en) * 1918-08-09 1920-11-09 Wachsman Adolph Stop mechanism for knitting-machines
US1778097A (en) * 1929-12-05 1930-10-14 Wachsman Jacob Circuit closer for stop-mechanism of knitting machines and the like
US2144670A (en) * 1935-07-13 1939-01-24 Stop Motion Devices Corp Stop motion, etc.
US2467952A (en) * 1949-04-19 Antonevich
US2515479A (en) * 1949-06-18 1950-07-18 Stop Motion Devices Corp Stop motion for knitting machines with full range adjustment
GB716549A (en) * 1952-06-11 1954-10-06 Triplite Ltd An improved yarn detecting mechanism for textile machine stop motions
GB811704A (en) * 1954-07-20 1959-04-08 Triplite Ltd Improvements in or relating to thread detecting devices
US3257518A (en) * 1964-04-13 1966-06-21 Stop Motion Devices Corp Yarn tension control device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2467952A (en) * 1949-04-19 Antonevich
US706840A (en) * 1901-06-26 1902-08-12 E H Godshalk Automatic stop-motion for knitting-machines.
US1358483A (en) * 1918-08-09 1920-11-09 Wachsman Adolph Stop mechanism for knitting-machines
US1778097A (en) * 1929-12-05 1930-10-14 Wachsman Jacob Circuit closer for stop-mechanism of knitting machines and the like
US2144670A (en) * 1935-07-13 1939-01-24 Stop Motion Devices Corp Stop motion, etc.
US2515479A (en) * 1949-06-18 1950-07-18 Stop Motion Devices Corp Stop motion for knitting machines with full range adjustment
GB716549A (en) * 1952-06-11 1954-10-06 Triplite Ltd An improved yarn detecting mechanism for textile machine stop motions
GB811704A (en) * 1954-07-20 1959-04-08 Triplite Ltd Improvements in or relating to thread detecting devices
US3257518A (en) * 1964-04-13 1966-06-21 Stop Motion Devices Corp Yarn tension control device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867592A (en) * 1972-12-14 1975-02-18 Antonio Sala Quellos Stop motion switch for controlling thread tension in a textile machine
US3851502A (en) * 1973-03-05 1974-12-03 Control Switch Inc Yarn detector switch-upper
USD246292S (en) * 1975-02-25 1977-11-08 Trip-Lite Ltd. Yarn fault detector
US20040188232A1 (en) * 2001-04-10 2004-09-30 Birger Johansson Thread detector
WO2011059492A1 (en) * 2009-11-16 2011-05-19 American Linc, Llc Calibrated yarn tensioner, textile machine, and method for tensioning a continuously running yarn
US20110114780A1 (en) * 2009-11-16 2011-05-19 American Linc., LLC Calibrated yarn tensioner, textile machine, and method for tensioning a continuously running yarn
CN103818779A (zh) * 2014-02-27 2014-05-28 浙江日发纺织机械股份有限公司 数码纱线张力控制器

Also Published As

Publication number Publication date
JPS4887148A (es) 1973-11-16
DE2256375A1 (de) 1973-08-23
ES407953A1 (es) 1976-02-01
JPS5131863B2 (es) 1976-09-09
GB1409322A (en) 1975-10-08
FR2171720A5 (es) 1973-09-21
DE2256375B2 (de) 1976-03-04
IT967882B (it) 1974-03-11

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Legal Events

Date Code Title Description
AS Assignment

Owner name: DURKIN, WILLIAM N.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:TAYLOR G. BRANDT;REEL/FRAME:003866/0601

Effective date: 19810205

Owner name: TAYLOR, G. BRANDT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:TAYLOR G. BRANDT;REEL/FRAME:003866/0601

Effective date: 19810205

AS Assignment

Owner name: IRO, INC., CONNECTICUT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:VANGUARD SUPREME MACHINE CORPORATION A NC CORP.;REEL/FRAME:004055/0526

Effective date: 19820621

Owner name: IRO, INC., A CORP.OF CT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:VANGUARD SUPREME MACHINE CORPORATION A NC CORP.;REEL/FRAME:004055/0526

Effective date: 19820621