US2608844A - Yarn carrier with takeup device for hosiery machines - Google Patents

Description

Sept. 2, 1952 v J. s. KARL 2,608,844

' YARN CARRIER WITH TAKEUP DEVICE FOR HOSIERY MACHINES Filed July. 21, 1950' INVENTOR. M055; 5. A1421 Patented Sept. 2, 1952 YARN CARRIER WITH TAKEUP DEVICE FOR HOSIERY MACHINES Josef S. Karl, Athens, Ga.

Application July 21, 1950, Serial No. 175,119

Claims.

In a full fashioned hosiery knitting machine an important factor in the knitting of an even iabric is the correct tension on the yarn asit travels from the cone to the knitting head. If there is not enough tension on the yarn as it is being taken from the cone during the knitting courseQslightly more yarn than is necessary will be thrown from the cone. The result is loose, irregular knitting, especially near 'the selvedges of thefabric The yarn, as it goes from the cone to'thejgyarncarrier, passes through several de viceslthat take up'the slack in the yarn and give it the necessary tension for the making of a perfect fabric. One of these devices is known as thering' tension motion. It consists of a brass orplastic ring which slides vertically on a bent wire ring holder. I

However, although the tension exerted by the rings as well, as other devices of the samecharact'er will exert a continual drag necessary to an evendistribution of the yarn, additional tension is needed when the carrier comes to the end of its ,course and the needles form the loops. At this instant, and when the narrowing machine istransfeiring the loops "to theirnew position on the; needles, asnapper, is used to provide the necessary backward pulljonthe thread in orderto form and maintain a firm selvedge. If no backwardpull were exerted'on the thread at these times,the yarn already issued from the carrier tube would be loose due to the'inward movement of the needles while forming the loops or the upward movement of the fabric imparted by the narrowing machine, thus making a sleasy, looseselvedge. If the snappers are slightly loose on the] snapper shaft their constant vibration will cause, uneven tension on the yarn as it is drawnrthrough and will result in the. formation of loose loops at theselvedge of the fabric, as well as distorted loops throughout the complete course. If the snapper springs are not all adjusted .to the same, correct tension, or if there are any split or grooved porcelains on the snappers, uneven and poorly formed selvedges result. Since the snapper springs are adjusted by bending them with the fingers, there can be no uniformity of tension among the carriers. Due to the differing elasticities'of yarns'and the distance from the snappers to the carrier tubes, further adjustments may be necessary when changing yams- V I propose to eliminate such difficulties by substituting for the snapper motion a novel form of takeup located on the carrier. itself, close to thejknitting' action, thus eliminating the problem of yarn stretch, androf a character that produces automatically a predetermined and equal backward pull on the yarn whenever the carrier comes to resta v Since my novel takeup device can obyiateany necessity-for snappers, it canresult in considerable savings in the manufacture of full fashioned'hosiery machines. Many heavy castings as well as several expensively machined cams need not be made and shipped, assembled and adjusted, thus resulting in saving several-hunkdreds of dollars on each machine. These takeup devices may in fact be made'in the form of attachments readily attachable to existing ma chines in such manner that a minimum of time would be lost in converting the machine tomy system of takeup device. In addition, if any difiiculty is' encountered during knitting, there would be but a few seconds time loss to the knitter in substituting a: new takeup device for the original, and there is not the necessity of ad-- justing to correct tension as is needed. in the use of snappers. 7

Fig. 1 is a front view illustrating one form, of my invention showing it snapped on a conven tional carrier assembly. v I I j I Fig. 2 is a side view showing the positionsof the takeup devices while the carrier is in motion.

Fig. 3 shows one form of blank used in manufacturing the device. s I

Fig.4 shows a partial side view and section enlarged to show the takeup devices in their operating position.

Fig. 5 is an enlarged side view of one of the takeup devices showing one form of stop used to prevent the device flying out too far. 7 I v Fig. 6 is anenlarged section taken on the line 6-6 of Fig. 1 showing how the device issecured to the carrier.

The carrier assembly consists of i the ,holder' plate I 0 to which the arm I I is secured by a cross strap I2 and bolts l3, l3. Thisassembly is se cured to the carrier rod M in the usual manner by bolts [5, I5.

The assembly has an introductory eyelet or guide It, and a discharge tube I1. The yarn or thread [8 passes through the guide l6, over the guide pin'or roller 19, under the guide pin or roller 20, over the guide pin or roller 21, under the guide pin or roller 22, over the guide pin or roller 23, over the guide pinor roller '24, and is guided through the groove 25 to the discharge tube l1. 3

The guides l9 and 2| are carried by the supports 25 and 28 respectively. 'The guides 20 and 22 are supported by arms 2! and 29 respectively, which are hinged on the ends of the'guide pins [9 'and 2| respectively.

The guide pins or rollers 20 and 22 are-thus supported so as to swing freely onthe pivots l9 and ZI. It will be understood; of course, that each'carrier assembly is mounted atan incline so that the guides 20 and 22 are moved by gravity to press against the yarn or thread; Guide .23 is .carried by a support 30. Each of the supports 26 and .ZB-is provided with a suite able stop 3[ "to limit the outward throw of .its swinging guide. i. In its preferred form, the invention-contemfor instance, by means of a cross piece 33 having a hook 34 for engaging one edge of the holder plate [0, and a latch piece 35 forsnap-- ping over the opposite edge.

The support 26 may be formed by stamping out portions 26' from the cross piece 33. An additional clamp-on device 36 may carry the support 30 which is formed by stamping. a piece 30 from the cross piece 36. The support 28 may be formedrfrom. the extensions ES -28. Similarly, the guide pin or roller Z tmay be supported-by cars 24" at the lower end of theblank 32.

In: operation the thread is drawn from the cone and-fed throughsuitable guides to the carrier assembly, where it passes the various guides as previously described and is drawn from the discharge tube I! by the knitting headas the carrier moves across the head. The tension on the yarn-lifts the guide rollers 20 and 22', which always tend tofall.- At the end of the course, tension isreleased and guidexrollers 20 and 22 fall and take up the slack thus created; It is this very slight backward pull that has necessitated the use of snappers heretofore with their attendant-problems of breakage and adjustment.

In case of unsatisfactory action, the guides may be all removed by simply detaching ,the

6. A yarn take-up mechanism for a hosiery knitting machine comprising aminclihed carrier arm having an introductory yarn guide at its upper end and a discharge tube at its lower end, a yarn guide projecting outwardly from the carrier armubelow said introductory yarn guide for" supporting yarn, a hold-down yarn guide hinged to swing below said projecting guide and means for limiting the outward swinging of said hold-down guide.

7. In a hosiery knitting machine, an inclined carrier having an introductory yarn guide at its upper end and a discharge tube at its lower end, a support projecting outward-ly from said carrier,- a yarn guide-membercarriedwby said support for supporting yarn below'the intro.- ductory yarn guide,. a weighted. yamwgui'd'e hinged to. saidsupport toswing. .downonmthe yarn after it. passes over the supporting guide member. and before it reaches the discharge tube to take up slack in the yarn.

8 In a hosiery machine, an inclined fcarrier having an introductory yarn guide at its upper endand a discharge tube at its lower end,a

guideassembly from thecarrier assembly and replacing withapreviously inspected member. Siichl an operation causesbut a. momentary delay in the operation of the. machine Mydevice ischeap to make, simple in. constructi'on, positive in action, easy to install. and replace, and requires no adjustment. It can completely do vaway with. the vnecessary evils inherent in the use of snappers.

I claim:

1 A carrier for a hosiery machine having an introductory guide at one end, a discharge tube at its opposite end, swinging takeup guides, another, guide intermediate the takeup guides and the discharge tube, and a single support for all of said guides'detachably mountedon said carrier 2. A yarn takeup device on a hosiery machine carrier comprising invsequence a. riser, a hinged takeup. guide, a second riser, a second hinged takeupaguide anda third riser, said takeup guides exerting anuinward pressure on the yarn.

3.. In a hosiery machine, a carrier assembly thread takeupdevicecomprising alternating raised guides: and hinged takeup-guides adapted toJswing-toward: the carrier by gravityu 4. A carrier assembly having an introductory guide at its upper end, a discharge tube at its lowerrend, a movable takeup device between said-sends said carrier having a groove leading to flsa-id discharge tube, and a raised .guide' on the carrier between said takeupdevice' and-said groove,-

5.A yarn-- take-up mechanism for a hosiery knitting machinecomprising an inclined carrier arm -havingan introductory yarn guide at its upper end and a discharge tube at its lower end, a yarn guide projecting outwardly from the" carrier arm below said introductory yarn guide for supporting yarn; and a hold-down yarn guide: hinged to" swing by gravity against the yarn below said projecting guide and take up slack: in; the "yarn above the: discharge. tube.

a sheet metal strip having an introductory yarn guide at its upper end and "aryarniguid'e at its lower end, a support carried'by'said strip'between its ends, a guide member" carriediby said support above said strip; a hold-down guide hinged tosaid support to swingby gravity belo'w said guide member, means for detachably see curing, said assembly'attachment to a carrier, said parts being arranged so that yarn may be led through the introductory'guide, thence over the guide member; thence beneath said holddown guide and thence over said lower guide:

10. A carrier assembly attachment comprising an elongated strip having an introductory'yarn guide at its upper end and a guide roller at its lower end, a support carried by said' strip between its ends; a guide roller carried by'said support, a hold-down guide hinged to said support to swing by gravity below said guide roller, means for 'detachably securing said assembly attachment to a carrier above the discharge tube thereof, said parts being arranged so that'yarn is led from the introductorygui'de, thence over the guide roller, thence beneath said hold-down guide and thence to the discharge tube:

, Josnr's. KARL;

REFERENCESIEITED 4 The following references" are of record in "the file of this patent:

UNITED STATES-PATENTS. Number Name Date- 2,403,310"' Sta'ub' July" 2,f I946 2,422,535 Feustel fiflh hen June-17', 19417 i FOREIGN HATJEFIWISv Number: Country Date;

300,338 Germany "manna-Sept 61191-7 381,016 Germany -Mm..- Sept 14 was 685,507 I Germany --r Dec. 19', 1939

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