US3889493A - Yarn float controller means for circular knitting machines - Google Patents

Yarn float controller means for circular knitting machines Download PDF

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Publication number
US3889493A
US3889493A US423787A US42378773A US3889493A US 3889493 A US3889493 A US 3889493A US 423787 A US423787 A US 423787A US 42378773 A US42378773 A US 42378773A US 3889493 A US3889493 A US 3889493A
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Prior art keywords
yarn
float
controller
spring
guide plate
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Expired - Lifetime
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US423787A
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English (en)
Inventor
Ernest Leonard Farmer
Osmond Herbert Ecob
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Wildt Mellor Bromley Ltd
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Wildt Mellor Bromley Ltd
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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
    • D04B15/54—Thread guides
    • D04B15/58—Thread guides for circular knitting machines; Thread-changing devices

Definitions

  • Yarn missed by needles is engaged by controller and maintained at required angular relationship between it and a stitch cam at the feed.
  • Device comprises (a) a yarn guide plate secured to the dial cam plate and having a hinge pin and a spring-locating hole, and (b) a removable float controller having in a bifurcated tail end thereof open-ended slots to engage the hinge pin, and an arm-like forward extension notched to receive a float of yarn.
  • the controller straddles the yarn guide plate.
  • a helical compression spring supported at one end by a projection on the float controller fits in the spring-locating hole.
  • the invention is primarily concerned with a multi-feed cylinder and dial machine capable of being set up to produce so-called blister fabric, i.e. jacquard fabric raised on its outer face by various arrangements of dial miss effects.
  • blister fabric which may, if desired, include colours, dial needles non-knit at a patterning feed or feeds and, at the or each corresponding feed, predetermined, e.g., spaced, ones only of the cylinder needles knit so that unknitted floats occur and extend between these cylinder needles.
  • the lengths of the floats depend upon the numbers of non-knitting cylinder needles which separate those cylinder needles which are caused to clear, take yarn and knit.
  • Such a float controller as so far very broadly considered will, for convenience be hereinafter called a float controller of the form herein referred to.
  • Each such float controller in the prior arrangement is also adapted to be latched in its operative position against the spring influence and is releasible and withdrawable, under this influence, from its operative position in consequence of the exertion laterally thereon of light pressure so as to enable desired changes in knitting to be made without wholly removing the controller element.
  • each of the float controller elements in the prior arrangement was adapted to function as a detector to detect the presence of and avoid damage being done by any undesirable body, such as a faulty needle or a slub of yarn, coming into contact with the controller-detector element.
  • an electrical switch designed to be included in an electrical stop motion circuit whereby in consequence of a lateral displacement of the element as aforesaid release of the element results in stoppage of the machine.
  • the primary object of the present invention is to provide an improved arrangement in which float controllers of the form herein referred to are mounted in out of the way positions to provide more accessibility to the machine.
  • the improved arrangement is designed also to secure other advantages hereinafter to be listed.
  • a yarn float controller of the form herein referred to is no long adapted tofunction adjunctively as a detector of an electrical stop motion device, and is mounted directly upon the corresponding yarn guide plate, i.e., in an out of the way position.
  • each float controller is so pivotally or hingedly mounted upon the corresponding yarn guide plate as to be readily disengageable and removable therefrom, spring means being provided between the said yarn guide plate and the controller so as normally to hold the latter in its operative position.
  • open-ended slots are formed in the body of the float controller to enable it to be removably engaged with a hinge pin on the corresponding yarn guide plate.
  • the operative end of the controller may be in the nature of an arm-like extension the extremity of which is notched to receive a float of yarn.
  • float controllers of this invention are not themselves directly combined with electrical stop motion devices, a multifeed circular cylinder and dial knitting machine to which such controllers are fitted will nevertheless usu' ally be equipped, at any appropriate locations remote from the float controllers. with electrical stop motion means.
  • FIG. 1 is a fragmentary side elevational view of so much of the machine as is necessary to show the application of the invention thereto and includes two feeds and associated yarn float controllers,
  • FIG. 2 is a detail vertical sectional elevation taken approximately on line II II of FIG. 1, and
  • FIG. 3 is a perspective view in exploded form, of one of the yarn float controllers together with the yarn guide plate upon which it is directly mounted.
  • FIGS. 1 and 2 The portion of the machine shown in FIGS. 1 and 2 comprises a rotary needle cylinder 1 having therein latch needles such as 2, a stationary cambox 3 fur nished with conventional knitting cam systems 4, a rotary dial 5, a stationary dial cam plate 6, and a bed plate 7.
  • yarn guide plates cum latch guards 8 mounted on the dial cam plate 6 at the respective feeds F and F are yarn guide plates cum latch guards 8, each modified as compared with a conventional guide to include a hinge pin 10 and a spring-locating hole 12 (see FIG. 3).
  • the hinge pin 10 protrudes from the opposite front and rear faces of the guide plate 8, and the hole in the latter through which a yarn Y is threaded and travels is indicated at 1 1.
  • the hole 12 extends at right angles to the hinge pin 10.
  • each yarn guide plate 8 Associated with each yarn guide plate 8 is a yarn float controller 14 which, as shown in FIG. 3, is mainly of inverted channel form with a bifurcated tail end comprising a pair of suitably spaced parallel portions which are slotted at 14a and 14b respectively.
  • This bifurcated tail end of the controller 14 is thus adapted to straddle the yarn guide plate 8 and, by presence of the slots 14a and 14b, is enabled to locate on the hinge pin 10.
  • the pivoted yarn float controller 14 associated with each yarn guide plate 8 is normally yieldably maintained in its working position shown in FIGS. 1 and 2 by a small helical compression spring 16. At one end, and as shown in FIG. 3, this spring 16 is engaged with and supported by a tongue or projection 18 on the float controller 14 and has its opposite end located in the aforementioned hole 12 in the guide plate 8.
  • each float controller 14 is in the nature of an upwardly curved or arcuate arm 20 having in its extremity a downwardly directed notch 20a in which a yarn Y locates during the creation of a long float as seen at the feed F in FIG. 1.
  • the yarn would be carried around by the last needle which has taken it, and would extend from the feeder at such a shallow angle that when the yarn is again required to be knitted by a subsequent needle, the yarn would be positioned too high to be accepted into the needle hook.
  • the arm 20 is, therefore, incorporated to ensure that the required angular relationship between the yarn and the stitch cam K is maintained substantially constant regardless of whether certain needles are knitting or missing the yarn.
  • a multi-feed circular knitting machine of the type comprising a needle cylinder, a cylinder cam box, a needle dial and a dial plate, said machine being set up to produce floated yarn effects in the knitted fabric and wherein there is provided at each feed a stitch cam and at at least some feeds a float controller including an element adapted to be spring loaded in an operative posi tion in which it is so arranged that, in normal working conditions when the needles are knitting, the yarn being knitted runs clear of the said element whereas where the said yarn is missed by the needles the resulting float engages the element in such a way that the required angular relationship between the yarn and the stitch cam at the feed is maintained, characterized in that each said float controller is mounted directly upon a corresponding yarn guide plate secured upon the dial cam plate at its feed and is not itself adapted to funtion as a detector of an electrical stop motion and wherein each said float controller is so pivotally mounted upon its corresponding yarn guide plate as to be readily disengageable therefrom, and spring means are provided between each
  • each yarn guide plate in addition to being formed with a hole through which a yarn can be threaded and travel, is provided with a hinge pin protruding from opposite faces thereof and has a springlocating formation
  • the associated removable float controller has a body which is formed for engagement with the hinge pin and is provided with a float-receiving extension, a spring retained by said spring-locating formation being arranged to bear on the float controller body.
  • a circular knitting machine wherein the body of each float controller has formed therein open-ended slots to receive the hinge pin on the associated yarn guide plate.
  • each float controller is an arm-like forward extension which is notched to receive a float of yarn.
  • each float controller is mainly of inverted channel form with a bifurcated tail end comprising a pair of suitably spaced parallel portions in which the open-ended slots are formed, said portions being adapted to straddle the associated yarn guide plate.
  • each float controller is provided, between the two spaced and slotted parallel portions of its bifurcated tail end, with a springengaging projection.
  • a circular knitting machine wherein the arm-like forward extension of the body of each float controller is of an upwardly curved arcuate form having its notched extremity downwardly di rected.
  • each yarn guide plate is a hole extending at right angles to the hinge pin.
  • a circular knitting machine wherein said spring is a helical compression spring supported at one end by the spring-engaging projection of each float controller and at its other end is accommodated in the spring-locating hole in the yarn guide plate.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US423787A 1973-01-16 1973-12-11 Yarn float controller means for circular knitting machines Expired - Lifetime US3889493A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB216973*[A GB1401912A (en) 1973-01-16 1973-01-16 Yarn float controller means for circular knitting machines

Publications (1)

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US3889493A true US3889493A (en) 1975-06-17

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US423787A Expired - Lifetime US3889493A (en) 1973-01-16 1973-12-11 Yarn float controller means for circular knitting machines

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US (1) US3889493A (es)
JP (1) JPS5725661B2 (es)
DE (1) DE2401581A1 (es)
ES (1) ES422103A1 (es)
FR (1) FR2214002B1 (es)
GB (1) GB1401912A (es)
IT (1) IT1002369B (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4507832A (en) * 1982-09-23 1985-04-02 Technology Consulting Corporation Method and apparatus for the continuous treatment of yarn
WO2014191964A1 (en) 2013-05-30 2014-12-04 Richter Gedeon Nyrt. New bis-indole alkaloids as anticancer drugs

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1226258B (it) * 1988-08-04 1990-12-27 Vignoni Srl Perfezionamenti alle macchine circolari da maglieria

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1335633A (en) * 1920-03-30 Sylvania
US1827660A (en) * 1928-10-11 1931-10-13 Spiers William Ltd Yarn changing means for circular knitting machines
US3226954A (en) * 1966-01-04 Fregeolle method of knitting
US3529442A (en) * 1967-07-24 1970-09-22 Harry Harris Gelber Rib knitting machine
US3545234A (en) * 1967-05-10 1970-12-08 Wildt Mellor Bromley Ltd Circular knitting machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR682980A (fr) * 1928-10-11 1930-06-04 Wiilliam Spiers Ltd Perfectionnements aux appareils de changement de fil pour métiers à tricoter circulaires

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1335633A (en) * 1920-03-30 Sylvania
US3226954A (en) * 1966-01-04 Fregeolle method of knitting
US1827660A (en) * 1928-10-11 1931-10-13 Spiers William Ltd Yarn changing means for circular knitting machines
US3545234A (en) * 1967-05-10 1970-12-08 Wildt Mellor Bromley Ltd Circular knitting machine
US3529442A (en) * 1967-07-24 1970-09-22 Harry Harris Gelber Rib knitting machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4507832A (en) * 1982-09-23 1985-04-02 Technology Consulting Corporation Method and apparatus for the continuous treatment of yarn
WO2014191964A1 (en) 2013-05-30 2014-12-04 Richter Gedeon Nyrt. New bis-indole alkaloids as anticancer drugs

Also Published As

Publication number Publication date
JPS5725661B2 (es) 1982-05-31
IT1002369B (it) 1976-05-20
DE2401581A1 (de) 1974-07-18
GB1401912A (en) 1975-08-06
FR2214002A1 (es) 1974-08-09
FR2214002B1 (es) 1978-01-06
JPS49101657A (es) 1974-09-26
ES422103A1 (es) 1976-04-01

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