US2908154A - Yarn handling and severing mechanism for circular knitting machines and method - Google Patents

Yarn handling and severing mechanism for circular knitting machines and method Download PDF

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Publication number
US2908154A
US2908154A US721452A US72145258A US2908154A US 2908154 A US2908154 A US 2908154A US 721452 A US721452 A US 721452A US 72145258 A US72145258 A US 72145258A US 2908154 A US2908154 A US 2908154A
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Prior art keywords
yarn
shear
yarns
knitting
arm
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US721452A
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English (en)
Inventor
Vaughn H Butler
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Burlington Industries Inc
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Burlington Industries Inc
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Priority to NL237072D priority Critical patent/NL237072A/xx
Application filed by Burlington Industries Inc filed Critical Burlington Industries Inc
Priority to US721452A priority patent/US2908154A/en
Priority to GB7919/59A priority patent/GB877182A/en
Priority to DE19591410274 priority patent/DE1410274A1/de
Priority to FR789392A priority patent/FR1224387A/fr
Application granted granted Critical
Publication of US2908154A publication Critical patent/US2908154A/en
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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
    • D04B15/60—Thread guides for circular knitting machines; Thread-changing devices with thread-clamping or -severing devices
    • D04B15/61—Thread guides for circular knitting machines; Thread-changing devices with thread-clamping or -severing devices arranged within needle circle
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S112/00—Sewing
    • Y10S112/01—Suction thread cutting

Definitions

  • I36 I40 I3 is 4 n u 66 72 I I i 44 I 9Q l II I 8 46 m @7 36 as r 06/// I 5 50 l 'NVENTOR so I 6 I32 I 80 VAUGHN H.BUTLER I24 ATTORNEY 5 Oct. 13, 1 959 v, T R 2,908,154
  • This invention relates to circular knitting machines, and in particular to improved means and methods for handling and severing yarns on the dial caps of multiple feed knitting machines.
  • a principal object of the present invention is the provision of novel means and methods for positioning yarns over the dial caps of multiple feed machines for clipping, and automatically severing the yarns close to the fabric during yarn changes, with such reliability and control as to eliminate subsequent inspection and clipping of free ends.
  • a single yarn handling device and a single shear are provided and utilized to handle and clip yarns from at least two distinct feed stations.
  • the invention also contemplates the close clipping of the ends of newly inserted and with drawn yarns from a plurality of feed stations, preferably with a single shear stroke.
  • Another object of the invention is the provision of improved suction means for tensioning and controlling yarnson the dial cap of the machine, and means for positive and precise control of the air flow. Particularly,
  • means are provided to terminate air flow in precisely timed relation with operation of the shear, and subsequent to the shearing operation. Delayed air fiow termination is accomplished by means distinct from the shear operating means.
  • a related object is the provision of means for delayed shear operation, that is, for operation of the shear after movement of the main pattern drum has terminated and while the latter is at rest, and alternative means for operating the shear in time with movement of the main pattern drum. Further objects will be in part evident and in part pointed out hereinafter.
  • Figure 1 is a top plan view of a preferred embodiment of the invention in operative association with related parts of a two feed knitting machine, with some parts removed for the sake of clarity;
  • Figure 3 is a side elevational view of the mechanism of Figure 1, substantially from the left hand side thereof;
  • Figure 4 is an elevational view, showing details of the novel yarn clamp of the present invention.
  • Figure 5 is a plan view of a portion of the dial cap, illustrating the novel guide element provided below the yarn handling device;
  • Figure 7 is an elevational view, partly broken away, illustrating the air control means of the present invention.
  • Figure 8 is an elevational view of the air valve operating, latching and tripping mechanism of Figure 7, on enlarged scale;
  • Figure 9 is a side elevational view, partly diagrammatic, of the shear operating mechanism
  • Figure 10 is an elevational view of the mechanismof Figure 9, viewed from the left-hand side thereof; and Figures 11 to 16 are plan views sequentially illustrating the operation of the invention through a yarn change.
  • Figures 1, 2 and 3 illustrate a portion of a conventional multiple feed seamless hosiery machine, such as a 400 needle model AMF Scott & Williams two feed machine.
  • the latch ring 20 of the machine encloses two knitting stations, which for convenience may be identified as main knitting station 22 and auxiliary knitting station '24, the auxiliary station trailing the main knitting station by approximately 45 in the direction of cylinder rotation, counterclockwise as viewed in Figure .1.
  • main knitting station 22 and auxiliary knitting station '24 the auxiliary station trailing the main knitting station by approximately 45 in the direction of cylinder rotation, counterclockwise as viewed in Figure .1.
  • a plurality of yarn fingers which are individually retractable andfunction as interchangeable yarn feeds.
  • the yarn fingers are pivotally mounted in the usual manner, and actuated in conventional manner by thrust bars maintained in con-- tact with the main pattern drum of the machine.
  • main knitting station yarn finger 26 is illustrated in active position, feeding yarn 28 to the needles 30, and yarn finger 32 is illustrated in inactive position, the inactive yarn 34 extending therefrom to the dial cap of the machine in usual manner.
  • the yarn finger 36 in active position, feeding yarn 38 to the needles 30, and the yarn finger 42 in inactive position, with inactive yarn 44 extending therefrom.
  • the needles 30 are independently mounted in the rotary cylinder of the machine (not shown), and extending thereabove adjacent the periphery of the dial and the dial cap 46.
  • the usual dial drive pinion 48 is mounted on the upper end of dial drive shaft 50, whichv serves to effect rotation of the dial and its transfer jacks in synchronism with the cylinder. All of the foregoing elements are conventional.
  • the yarn handling device is of the type disclosed in my copending application, Serial No. 650,212, filed April 2, 1957, and functions inv similar manner, although in the present invention the yarn hanw dling device handles yarns from both the main and the auxiliary knitting stations.
  • the yarn handling device includes a block or housing 62, the block having a horizontal bore extending therethrough, an 'air pressure conduit 64 leading thereto, and an exhaust conduit 66 near the encirclingneedles 30 of the machine.
  • the block 62 houses a piston 72, which extends above the top of the block, below the pivotally mounted clamparm 74. Fromthe free end of clamp'arm 74'extends a downwardly directed extension 76, best shown in Figure aeosnsa 3.
  • a branch passage 7 8 extends to the under surface 80' or the block 62, the under surface of theblock being spaced slightly from the dial cap 46.
  • a guide post 82 extends downwardly from the block to therdial cap, adjacent the opening ofbranch passage 78.
  • pressure air supplied to the yarn handling device through conduit 64 exhausts through conduit 66 and is eflective to induce air flow upwardly into branch passage 78, in other words, to create a vacuum inand below branch passage 78'.
  • the pressure air is effective also'to elevate the piston 72 and to pivot theclamp arm 74 disposed there above, whereby the clamp 'arm extension 76' is elevated at all times when pressure air is supplied tothe device;
  • spring or other suitable means are provided tobias the free end of clamp arm 74 and its extension 76 downwardly at all times.
  • Some of the pressure air also .passes through tube 68 and'its nozzle 7 0, creating a jet of air at this-point.
  • the inner-end of the yarn'clamp encloses a headed pin 92 extendingfrom-the'dial cap, and is movable with re.-- spect to said'pin, the upward movement thereof being limited h'owever, by the head '94;
  • Substantially centrally' thereof, the'yarn clamp encloses a vertical guide pin 96, andasmall springi98 encircles the guide pin' 96 between: the yarn clamp and the dial cap, as shown in Figure 4:
  • the spring 98 tends to elevate the yarnclamp, to the: maximum distance'p'ermitted by-the head 94 of pin 92.
  • a substantially V-shaped yarn guide 110 which may:
  • FIG. 7' The air controlmechanism of the invention is illustrated in Figures 7' and 8.'
  • a conven-' tional air valve 150 is mounted on a plate 152 which in turn is supported by aframe mounted bar 154,- adjacent the main timing drum 156 of the machine.
  • the air valve 150' is provided'withaplunger;158, whichisinternally biased to outward valve closedposition.
  • a lever: arm 160 is-pivotally mounted at 162 :on thebar 154, oneend-of the'lever ammbeing maintained-incontact with the timing 'drum l56 by a spring "164 suit ably engaged to the other end of the lever arm.
  • arhand lever 170 Adjacent 'the'lever arm-162, arhand lever 170 is-piv-- otally mounted at- 162, the hand'lever-also being aligned with and "engaging. the valve'plunger'head 166,,and being formed in'tofan outwardly extending-tail172.
  • a latch bracket 174' is fixed to the sideof hand. lever 170, and,
  • a suitably shaped latch 176 extendslaterally therefrom.
  • the guide element may be a section ofwire, suitably anchored into the dial cap as shown in Figure 6', and resting directly thereon.
  • Spring 178- extends from the latch 176 to the valve mounting structure, whereby the latch and theassociatedhand lever are maintained'in contact, with valve plunger I head 166, although with insufficient pressure to depress the valve'plunger '158 and openthevalve.
  • a latch arm 180- pivotally mounted at 182 on the, valve mounting structure, and extends below-the latch 176;
  • the latch arm 180 is formed'into; a latch engaging shoulder 184 and outwardly thereof into an upwardly- V ofisetriding surface 186, and a;;spring 188- biases the:
  • 190 is a rotary shaft of the. machine which rotates 'at' one-fourth the speed -of the needle cylinder.
  • the shaft 190 is'provided with a boss 1'92, and a rocker arm 194 is pivotally mounted there times to maintain it in above at 196.
  • Spring or other suitable meansfare pro vided to maintain the. associated end of rocker arm 194' in contact withthe boss 192.
  • a rackingpawl 198 extends from the other end of rocker arm 194: into. contactwith' the graduating cam of: the machine, which is not shown but which-is in alignmentwith the timing .156.
  • Opposed cams 200 areprovided on the periphery of boss 192, adapted "to-engage and rock arn1-1-94 periodically.
  • the rocker arm 194 may conveniently be extended, as at", 202, and a 'rigi'd'rod 204provided between the rocker arm extension 202 and side'pad 2'06 mounted on the'latch arm 180.
  • the operating lever 142 which is engaged to the movable shear blade 126 through rod 140 is engaged and actuated in normal manner by a thrust rod 210, which is maintained in contact with the timing drum 156 and elevated periodically by drum cams 212.
  • the thrust rod 210 passes througha guiding passage in the guide bar 214, and a spring extending from the guide bar to the thrust rod, urges it downwardly into contact with the timing drtun.
  • periodic movement of the timing drum in clockwise direction brings successive cams 212 under the thrust rod 210 and elevates the thrust rod to the top of a cam, the elevated position of the thrust rod being indicated in dotted lines in Figure 9.
  • the thrust rod rocks the operating lever 142 in clockwise direction, moving the rod 140 downwardly and thereby opening the shear.
  • the timing drum carries the cam 212 out from under the thrust rod 210, the thrust rod returns to normal position riding the drum, permitting the shear to close.
  • the trailing end of the shear operating cam 212 may be stepped or sloped, to permit closing of the shear over a space of time corresponding to the passage of several needles, for a purpose presently evident.
  • the end of operating lever 142 over the thrust rods may be provided with a transverse pad 216, whereby the operating lever is adapted to be engagedby a thrust rod 218, as well as by the thrust rod 210.
  • the thrust rods 210 and 218 are relatively widely spaced for the purpose of clarity of illustration, but it will be understood that in practice the thrust rods may be closely adjacent, and in place of the pad 216, two adjoining operating levers may be tied together to function as one, under the impetus of either associated thrust rod.
  • the thrust rod 218 is utilized to effect shear closing after short auxiliary drum movements have terminated, as during makeup.
  • the guide bar 214, behind thrust rod 218, is cut away or slotted at 220, to permit rearward movement of the thrust bar, and an additional spring 222 extends from thrust rod 218 forwardly to the guide bar 214, to urge thrust rod 218 forwardly and maintain it when permitted in normal position.
  • a collar 224 is provided on the rotary shaft 190 in alignment with the thrust rod 218, the collar having opposed convex cams 226 thereon, and a cam 228 is provided on the forward edge of thrust rod 218 in the vicinity of collar 224.
  • the cams 226 and 228 are of such size and disposition that when the thrust rod 218 is in normal position, directly behind the solid line position of thrust rod 216 illustrated in Figure 9, the collar 224 and its cams 226 rotate without striking the thrust rod cam 228.
  • Shear operating cams 230' are provided on the timing drum in alignment with the thrustrod 218, and it will be understood that a brief movement of the timing drum is adequate to elevate the thrust rod 218 onto a cam 230 and into shear opening position. The timing drum movementmay then, terminate in such relationship.
  • This rearward movement of the thrust rod 218 is permitted by slot 226 and resisted by spring 222, which is effective on subsequent movement of the timing drum to restore the thrust rod to normal position.
  • the pressure air elevates piston 72 and the;-assoc1ated.clamptarm ,74, w hereby the clamp'arm e osgrsas extension 7 6 rises ⁇ from the clamp 90, releasing .the'yarns extending'therebelow.
  • the small: spring 98 below the. y-a'r'n' cla'mp 90 willbe understood, cooperates to elevate the y arn clamp a shortrdistance' from the dial cap surface;
  • a drum cam 212 passes under and elevates the thrustrod'210 (Figure 9), rocking the operatinglever-14Z1to open yarn shear 120; As seen in Figures l, 2 and 3, downward movement of the-associated end of operating lever 142 depresses rod 150 to rotate lever'136, and the other end of lever 136 acts throughrod 134'to elevate the movableshear blade 126-about its pivot128. The shear remains open through out the remainder of the yarn change, closing as one of the final movements thereof.
  • the previously active yarn 2 8 is withdrawn therefrom, byretraction of its yarn finger Z6.
  • the previously active yarn is withdrawn 10 or needles after the hitherto inactive yarn is;inserted,'providing ayarn lap of about one-half inch.
  • Figure 12 illustrates the relationship of the elements immediately after yarn '28 has been withdrawn from knitting by retraction of finger 2 6. Itwillbe noted that the newly inserted yarn 34 has been carried a short distance around the needle circle by'needle 30", and the yarn end has been partially withdrawn from under the yarn guide 110. The resultant slack in the end of yarn 34 is taken up by the yarn handling device60, which takes up the yarn end as permitted.
  • Figure 15 illustrates the I relationship of- "the. yarns: whenzthe needle 30? has-reached a. position substantially opposite-theyarn handling devicer60; At thisi-timethe. yarn'..2 8 withdrawnt'fromthe knitting at the main akn'itting station; is engageddngthe V. of. yarn :guide' 110, wrapped slightly around: the 5 guide. post 114; ,and has passed under the outer; endrofqitheiyarn clamp'fll. The yarnc-38twith drawn. from'fthe rknitting.
  • Figure. 16- illustrates the relationship 0f the yarns and other elements when" the needle 30' has reached a positionv close. to the. pivotal axis of the yarn shear 120.
  • Theair blast issuing fromnozzle 70 is effective atthis'tir'ne to belly out the 'yarns where they extendinwardly from the needles.
  • This airb'last sweeps across the peripheral portion ofthe dial cap-in the vicinity ofthe shear; in thes'direction of'needlef rotation, engagingthe sufficiently to insure .that they extend substantially radially inwardly from'the needles.
  • the blast effect of the nozzle is balanced by the restraining suction effect of the yarn handling mechanism on the 'yarns, with the net result that the yarns assume the relative positions shear to the needles, due to the inclination of the yarns.
  • Shearoperation is .timed to take place at about the time when the yarns are in the position of Figure 16.
  • closing of the shear is initiated slightly before the needle 30' reaches the position of Figure 16 At this point, the cam 212 passes out from under the thrust rod 210 ( Figure 9) permitting the operating lever 142 to rotate counterclockwise as viewed, and to close the shear. Since the last needle to, take the auxiliary knitting station yarn 38 may trail the needle 30 by an inch or more, the difficulty of cutting all four yams with a single shear stroke will be apparent. The size of the shear blades have, of course, a practical limit, andthe yarn 38 may not be positioned for shearing when the yarn 34 reaches the last possible position for shearing. For this reason, it is desirable to close the shear gradually over a'discrete time interval.
  • Shear closing may in this manner be timed to-initiate shearing immediately prior to the point illustrated in Figure 16, and to complete the shear stroke a few needles after the momentary position illustrated in Figure 16, thereby insuring that all four yarns are sheared in a single stroke, leaving cut ends on the fabric of less than one-hallf inch inlength.
  • a cam 208 passes under the lever arm 160 of the air control mechanism ( Figures 7 and 8) and displaces the lever arm to the position shown in Figure 8.
  • the valve 150 is prevented from closing immediately, its plunger 158 being held in by the hand lever 170, the associated latch 176 being engaged against the shoulder 184 of latch arm 180. That is, upon retraction of the lever arm 160 therefrom, the valve is momentarily latched in open position by hand lever 170 and latch arm 180.
  • the rocker arm 194 is displaced by one or the other of cams 200, displacing the rod 204 and the engaged latch arm 180 downwardly.
  • the latch 176 is in this manner tripped, and the valve 150 is permitted to close, its plunger 158 and its head 166 moving outwardly and returning the hand lever 170 to the position illustrated in Figure 8.
  • air flow to the yarn handling device may be maintained slightly beyond the duration of the drum movement, insuring that the This may be conveniently"a'ccom-" shearing operation is completed and that all yarns are engaged, cleared, and tensioned before the air flow is cut off.
  • valve 150 terminates the flow of air through nozzle 70, and permits the piston 72 to retract, whereby the clamp arm 74 may be rotated by its spring to bring its extension 76 into firm contact with yarn clamp 90, whereby all yarns extending thereunder are mechanically and positively clamped.
  • the hand lever is useful for manual opening of the valve 150, to permit air flow.
  • An attendant may at any time, in threading or adjusting the machine or the like, lift the hand lever tail 172 to open the valve.
  • the thrust rod is rearwardly displaced and knocked on the cam by the action of shaft 190, permitting the shear to close.
  • the time interval thus provided is sufiicient to permit the yarns to reach the position of the shear, although the timing drum movement has terminated previously.
  • Either alternative method of operating the yarn shear may be employed at any stage in the knitting cycle, as they operate independently of each other.
  • a first group of individually retractable yarn feeds a second group of individually retractable yarn feeds angularly spaced from said first yarn feed group in the direction of cylinder rotation, a timing drum controlling the movement of said yarn feeds, a shear disposed peripherally of said dial cap at a point angularly spaced from said second yarn feed group in the direction of cylinder rotation, means actuated by said drum for opening said shear, means for closing said shear when said drum is stationary, a yarn handling device mounted above said dial cap between said second yann feed group and said shear, an air line leading to said yarn handling device, a valve in said air line, means actuated by said drum for opening said valve, and means for closing said valve when said drum is stationary.
  • said yarn handling device includes a housing, a horizontal bore extending through said housing, said air line communicating with one end of said bore, an exhaust conduit communicating with the other end of said bore, and a branch passage extending downwardly from an intermediate section of said bore and opening above said dial cap.
  • a dial cap and a yarn handling device mounted above said dial cap, said yarn handling device including a housing, a horizontal conduit communicating with the other end of said bore, aebrancmpassage; extending downwardly froman intermediate section of said bore and opening above said,dialt cap,;-a-;yarn clamp mounted on said-dial cap adjacent saidhousing, a-clarnp arm -pivotally mounted on saidhousing; for; vertical, movement, resilient-v means urging 7 said: clamp: arm: downwardly .into 1 contact-- with said yarn; clamp, resilient meansbetweemsaid yarn clamp-and'saiddial cap ad'apted; to elevate said; yarn clamp a limited distance when said clamp arm is elevated, at verticaLbore,
  • the method comprising the steps of removingyarns from active knitting by retraction of a-yarnfeed1 of each of'said yarn feed groups, whereby saidiwithdrawnyarns are carried by the last needle to-knit each means of said suction.
  • the method comprising the steps; of applying; sion to inactive yarnends extendingfrom both ,fe groups oversaiddial cap by suctionapplied ,to a common pointtrailing said second. yarn feedfgr'oup and leading tion, inserting inactive yarnsfrom each ,of saidyarnfeed; groups while so tensionedinto the needles for knitting ⁇ , withdrawing yarns from active knitting by ret action, of; a yarn' teed of each. ofvsaid yarnfeed groups,jwherebv'.

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US721452A 1958-03-14 1958-03-14 Yarn handling and severing mechanism for circular knitting machines and method Expired - Lifetime US2908154A (en)

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Application Number Priority Date Filing Date Title
NL237072D NL237072A (en)) 1958-03-14
US721452A US2908154A (en) 1958-03-14 1958-03-14 Yarn handling and severing mechanism for circular knitting machines and method
GB7919/59A GB877182A (en) 1958-03-14 1959-03-06 Yarn handling and severing mechanism for circular knitting machines and method
DE19591410274 DE1410274A1 (de) 1958-03-14 1959-03-13 Fadenfuehrung und Abtrennvorrichtung fuer Rundstrick- und Rundwirkmaschinen
FR789392A FR1224387A (fr) 1958-03-14 1959-03-14 Procédé de raccordement des fils sur machine à tricoter circulaire et machine en application dudit procédé

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US721452A US2908154A (en) 1958-03-14 1958-03-14 Yarn handling and severing mechanism for circular knitting machines and method

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US2908154A true US2908154A (en) 1959-10-13

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DE (1) DE1410274A1 (en))
FR (1) FR1224387A (en))
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NL (1) NL237072A (en))

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3019628A (en) * 1958-09-19 1962-02-06 Scott & Williams Inc Clamping and cutting means for circular knitting machine
US3051104A (en) * 1959-02-09 1962-08-28 Roane Hosiery Inc Cutter attachment for looping machines
US3050970A (en) * 1958-02-14 1962-08-28 Billi Giorgio Yarn cutting means for knitting machine
US3058438A (en) * 1960-12-19 1962-10-16 Frank D De Long Jr Cutting mechanism
US3068814A (en) * 1960-08-30 1962-12-18 Charles H Bacon Company Inc Suction apparatus for hosiery loopers
US3097512A (en) * 1959-11-02 1963-07-16 mover
US3149594A (en) * 1960-09-22 1964-09-22 Frank D De Long Jr Method and apparatus for trimming stitches
US3174307A (en) * 1960-03-18 1965-03-23 Schubert & Salzer Maschinen Thread changing apparatus
US3188835A (en) * 1960-03-09 1965-06-15 Schubert & Salzer Maschinen Thread clamping device
DE1197573B (de) * 1960-10-18 1965-07-29 Arwa Feinstrumpfwerke Hans Thi Pneumatische Abzugs- und Wendevorrichtung fuer Strumpfrundstrickmaschinen
US3197977A (en) * 1960-02-05 1965-08-03 Gordon Company Yarn clamping and severing mechanism for multi-feed circular knitting machines
US3208240A (en) * 1960-04-27 1965-09-28 Harriss And Covington Hosiery Yarn clamping, severing and removal attachment for circular knitting machines
DE1205647B (de) * 1960-02-15 1965-11-25 Giorgio Billi Fadenschneidvorrichtung fuer Strumpfrundstrick-maschinen mit Doppelrandeinrichtung
US3225571A (en) * 1960-07-12 1965-12-28 Singer Co Apparatus for yarn severing in circular knitting machines
US3257829A (en) * 1961-04-08 1966-06-28 Singer Co Yarn control means for circular knitting machines
US3420076A (en) * 1965-11-10 1969-01-07 Ettore Luzzatto Method and device for severing and mechanically removing yarn ends in circular knitting machines for fine knitted goods,in particular stockings
US3760608A (en) * 1970-06-16 1973-09-25 F Lonati Thread cutting and retaining device for circular knitting machines
US20110073028A1 (en) * 2008-05-30 2011-03-31 Lonati S.P.A. Sewing or Looping Head, Particularly for Automated Closing of Tubular Knitted Articles at an Axial End Thereof
CN107938143A (zh) * 2017-12-05 2018-04-20 杭州高腾机电科技有限公司 针织圆机针盘升降装置
CN114753056A (zh) * 2022-05-16 2022-07-15 泉州汇成针织有限公司 一种圆筒式梳栉装置及具有该梳栉装置的经编机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4522042A (en) * 1983-07-18 1985-06-11 Kayser-Roth Hosiery, Inc. Yarn cutting and clamping apparatus for circular knitting machines

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US1352079A (en) * 1920-09-07 Island
US1359250A (en) * 1919-09-18 1920-11-16 Standard Machine Co Clamp and cutter actuating mechanism
DE503418C (de) * 1925-10-12 1930-07-24 Scott & Williams Inc Rundstrickmaschine zum Stricken plattierter Ware
US1865710A (en) * 1925-10-28 1932-07-05 May Hosiery Mills Knitting machine
US2180707A (en) * 1923-02-03 1939-11-21 Scott & Williams Inc Knitting machine
US2287131A (en) * 1941-03-05 1942-06-23 Phoenix Hosiery Company Combination cutter and binder for circular knitting machines
US2551385A (en) * 1946-01-16 1951-05-01 Hanes Hosiery Mills Company Yarn severing and clamping mechanism for knitting machines
US2824436A (en) * 1957-02-27 1958-02-25 Hanes Hosiery Mills Co Yarn clamping and severing mechanism for knitting machines

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1352079A (en) * 1920-09-07 Island
US1359250A (en) * 1919-09-18 1920-11-16 Standard Machine Co Clamp and cutter actuating mechanism
US2180707A (en) * 1923-02-03 1939-11-21 Scott & Williams Inc Knitting machine
DE503418C (de) * 1925-10-12 1930-07-24 Scott & Williams Inc Rundstrickmaschine zum Stricken plattierter Ware
US1865710A (en) * 1925-10-28 1932-07-05 May Hosiery Mills Knitting machine
US2287131A (en) * 1941-03-05 1942-06-23 Phoenix Hosiery Company Combination cutter and binder for circular knitting machines
US2551385A (en) * 1946-01-16 1951-05-01 Hanes Hosiery Mills Company Yarn severing and clamping mechanism for knitting machines
US2824436A (en) * 1957-02-27 1958-02-25 Hanes Hosiery Mills Co Yarn clamping and severing mechanism for knitting machines

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3050970A (en) * 1958-02-14 1962-08-28 Billi Giorgio Yarn cutting means for knitting machine
US3019628A (en) * 1958-09-19 1962-02-06 Scott & Williams Inc Clamping and cutting means for circular knitting machine
US3051104A (en) * 1959-02-09 1962-08-28 Roane Hosiery Inc Cutter attachment for looping machines
US3097512A (en) * 1959-11-02 1963-07-16 mover
US3197977A (en) * 1960-02-05 1965-08-03 Gordon Company Yarn clamping and severing mechanism for multi-feed circular knitting machines
DE1205647B (de) * 1960-02-15 1965-11-25 Giorgio Billi Fadenschneidvorrichtung fuer Strumpfrundstrick-maschinen mit Doppelrandeinrichtung
US3188835A (en) * 1960-03-09 1965-06-15 Schubert & Salzer Maschinen Thread clamping device
US3174307A (en) * 1960-03-18 1965-03-23 Schubert & Salzer Maschinen Thread changing apparatus
US3208240A (en) * 1960-04-27 1965-09-28 Harriss And Covington Hosiery Yarn clamping, severing and removal attachment for circular knitting machines
US3225571A (en) * 1960-07-12 1965-12-28 Singer Co Apparatus for yarn severing in circular knitting machines
US3068814A (en) * 1960-08-30 1962-12-18 Charles H Bacon Company Inc Suction apparatus for hosiery loopers
US3149594A (en) * 1960-09-22 1964-09-22 Frank D De Long Jr Method and apparatus for trimming stitches
DE1197573B (de) * 1960-10-18 1965-07-29 Arwa Feinstrumpfwerke Hans Thi Pneumatische Abzugs- und Wendevorrichtung fuer Strumpfrundstrickmaschinen
US3058438A (en) * 1960-12-19 1962-10-16 Frank D De Long Jr Cutting mechanism
US3257829A (en) * 1961-04-08 1966-06-28 Singer Co Yarn control means for circular knitting machines
US3420076A (en) * 1965-11-10 1969-01-07 Ettore Luzzatto Method and device for severing and mechanically removing yarn ends in circular knitting machines for fine knitted goods,in particular stockings
US3760608A (en) * 1970-06-16 1973-09-25 F Lonati Thread cutting and retaining device for circular knitting machines
US20110073028A1 (en) * 2008-05-30 2011-03-31 Lonati S.P.A. Sewing or Looping Head, Particularly for Automated Closing of Tubular Knitted Articles at an Axial End Thereof
US8631751B2 (en) * 2008-05-30 2014-01-21 Lonati S.P.A. Sewing or looping head, particularly for automated closing of tubular knitted articles at an axial end thereof
CN107938143A (zh) * 2017-12-05 2018-04-20 杭州高腾机电科技有限公司 针织圆机针盘升降装置
CN114753056A (zh) * 2022-05-16 2022-07-15 泉州汇成针织有限公司 一种圆筒式梳栉装置及具有该梳栉装置的经编机
CN114753056B (zh) * 2022-05-16 2023-12-15 泉州汇成针织有限公司 一种圆筒式梳栉装置及具有该梳栉装置的经编机

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Publication number Publication date
DE1410274A1 (de) 1969-07-10
NL237072A (en))
GB877182A (en) 1961-09-13
FR1224387A (fr) 1960-06-23

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