US2242462A - Yarn severing mechanism for wrap stripe machines - Google Patents

Description

May 20, 1941'. A.- GAGNE 2mm smvsnma mmcnmism F Original Filed July 18, v1929 o2 WRAP STRIPE MACHINES 3 Sheets-Sheet 1 a lflllllllllill!!!"HUM/MM 4 llllhlllllllllllllllllllllllllh 3rmnt0r I Aw: usmiczcuzi Ctttomeg y2 9 1. A. GAGN:

TRIPE MACHINES YARN SEVERING MECHANISM FOR WRAP 5 3 Sheets-Sheet 2 OriginalFiled July 18, 1929 fzvvzzvroa:

Anal/s 211v 6.4 mm y j v ATTy;

I A. GAGNE May 20, 1941.

YARN siavERmq MECHANISM'FOR WRAP STRIPE'MACHINES 3 Sheets-Sheet 3 Original Filed July 18, 1929 FIG. 3.

3nventor AvcusTmcAcnzj (Ittomeg.

Patented May 20,1941

FFIE

YARN SEVERIN G MECHANISM STRIPE;

Hemphill Company, Central Falls,

Massachusetts of application Serial his application 1932, Serial No. 639,918. Renewed 1937 poration of Continuation July 18, 1929.

1,842,974, January 26, 1932.

In the drawings:

Fig. 1 is a view in plan showing the so-called latch ring of a knitting machine, associated with which latch ring are main and auxiliary yarn Fig. 5 is a fragmentary View in elevation and partly in section of the clamping and cutting mechanisms for the main yarns;

Fig. 6 is a fragmentary elevational VleW partly FOR WRAP MACHINES Augustin Gagne, Central Falls, R. I., assignor to 1., a cor- No. 379,302, October 27, October 14,

l2, such yarn being shown was fed through an eye provided in the yarn lever 2. The said yarn I2 is or may be what is ordinarily called the high splice yarn and is fed to one-half, more or less,

as l3 or l3, the following description will be confined to yarn l2 and threads I3, I3.

It will be understood that the yarn I2 is referred to as a yarn and the threads I 3, l3 are each referred to as a thread merely for the purpose of avoiding confusion in the following description, the terms yarns and threads being interchangeable.

The threads l3, I3 pass through eyes I4, l4 in a disc l5 which corresponds in function to the disc II! disclosed in the Lawson patent 1,702,608, and although two threads I 3, l3 have been shown, any number of such threads may be utilized.

and connected thereto is a socalled binder plate 27 outline and provided 21. Th

which is rigidly fastened to the block 26 in any mally spaced from a fixed blade 65 as shown in suitable manner. A spring 32 which is fastened Fig. 6. The rod 63 is provided with longitudinal to the blade 30 by the screw 29 normally mainslots 66 passing through which are pins or screws tains the blades 30 and 3| in a shearing rela- 61 which are fastened to a bracket 68. Also tionship. Plate 21 is provided with an opening secured to the bracket 68 is the fixed element 65 or recess 33 thereby permitting the blade 30 to of the cutter.

move to the position shown in Fig. so that a As will be evident, when the high splice or withdrawn yarn may be received between the other partial-course lever 2 is elevated to an two cutting blades 30, and- 3l. Positioned beinoperative position, such elevation raises the adtween clamp 24 and the cutter 3| is a non-autolaeent end o he lever a m 6 he y rocking matically controlled clamp 34 which serves lightly the shaft 56 and consequently the other arm 6| to clamp the yarns w e the automatically 81C- of the lever which in turn acts upon the pin 62 tuated clamp 24 and movable cutting blade 36 and causes movement of the blade 64 to the poare in the position shown in Fig. 5. The clamp sition shown inFlg. 6. With the par s in su h p 34 is pivoted to block 26 which is slotted as at 35 1 i n he la t ne le k 'tting the high splice or within which slot the inner end of the clamp .34 Other partial-course yarn Carries Such y r is received and through whi h 1 t d h l 36 around the needle circle in the direction of the in clamp 34 the pin 31 passes, arrow, Figs. 1 and 3, to the posit'on indicated The clamp 24 and movable cutting blade 30 are at 69, Fig. at Which time the thread is automatically actuated at predetermined times tween the blades 64 and 65 as indicated in Fig. 6.

by means of automatically actuated connections, Therellpoh, the yarn level 2 s pp d to he connected to and leading from a lever 38 which feeding p s t n as nd at d in 3 w r up n is pivoted intermediate its ends as at 39 to a the level arm 55 is permitted to p thereby lug 40 upstandin fro d connected t t rocking the lever arm 6| to a relatively lowered bracket plate I8. The inner arm of the lever 38 p i n, h m v bl bla e 6 hen s ver n the has pivotally connected thereto at 4| (Fig. 5) Y v g a seve ed yarn end 69'. Move a depending link 42 intermediate th d f ment of the blade 64 and arm 6| to a relatively which is rigidly connected as by means of screws w d p s is aus d y m ans f a sprin 43 an arm 44, a turned end of which terminates 10 which s oi around a p or screw in a downwardly extending lug 45 which engages the end of Which P s through a Plate e an arm of the yarn clamp lev 24, wh t end of which is provided with a hole through lever 38 is automatically actuated to move the which passes the od 20 n o a c e arm link 42 downwardly, the lug 45 rock th clamp '13. The plate 12 which const'tutes a lever rests 24 thereby causing the same to assume the posiup t pp face f bracket a m 3 whi h s tion shown inFig. 5. At the same time the movm d as t the r d 0 as y m a s f a s t able cutting blad 30 is moved t the o n posjscrew 14. The other end of the bracket arm 13 tion shown in Fig. 5 due to the lower portion a f d thereto and depending therefrom the of the link 42 being pivotally connected at 46 to before mentioned bracket 68. The free end of the said blade 30. Movement of the lever 38 in the level 12 terminates in a reduced end 1 the opposite direction is caused by means of the i which is received within a notch 16 in the upper spring (not shown) common to Banner maedge or surface of the slidable rod 63, the rechines. sult being that the spring 10 urges the reduced Fastened to the upper face of the latch ring end downwardly hereby causing the movable l is an elongated bracket 41 and upwardly problade 64 and lever arm 6| to move to a relatively jecting from the ends thereof are bearing lugs 45 lowered pos as Compared With that s ow 48, 49 through which a shaft 50 passes. se- Fi 6, hus s v rin yarn l2.

cured to the shaft 50 adjacent to the outer faces In 1 the p Stripe disc Which is Shown of the lugs 48 and 49 are collars 5| and 52 which as ov rlapp the n d circle nd being r are secured in adjusted position by means of set delved Within a recess 11 Provided in the latch screws 53 and 54. Thus the collars prevent end- 50 ring I, is preferably driven to rotate in timed rewise movements of the shaft 50 with respect to lation, such as one and one, with the needles the bracket 41. The end of the shaft 50 project- 9 and needle cylinder 9 in a manner similar to ing beyond the collar .52 has connected thereto as or identical to that disclosed in the Lawson Patby means of an adjusting screw 55 a lever arm ent 1,702,608.

56. Fastened to the underside of the lever arm 55 By referring to Figsin u e, wherein 56 is a plate 51 the lower face of which is noris disclosed successive positions of the yarn l2 mally in contact with the upper face of the yarn and wrap thread l3, the necessity for acting upon lever 2 intermediate the ends of the latter. The the yarn l2, such as by means of severing the plate 51 is provided with a hole through which same at least once during the knitting of each passes a screw or stud 58 around the shank of co course, will be apparent.

which is a coil spring 59 which yieldingly main- In Fig. 8 the lever 2 is shown as just having tains the forward end of the plate 51 in contact been elevated to an inoperative position at which with an adjustable stop 60 which passes through time the thread [3 is shown as being well within the free end of the arm 56. Thus it will be seen the needle circle, both the needles 9 and the disc that the screw 55 provides a means for adjustably (55 I5 moving in the direction of the two arrows. Conpositioning the lever arm 56 with respect to the tinued rotation of the needles finally brings the yarn lever 2, and the plate 51, and that the adlast needle knitting the thread l2, and indicated justing means therefor just described, provide an by the numeral 18, to the position shown in Fig. adjustment for the said arm 56 supplemental to 9 in which position the thread has been received the aforesaid adjustment provided by the screw 70 between the blades64 and as indicated in Fig. 55. The other end of the shaft5ll terminates 6, the threads l3 and 13 having moved to the in a turned end 61 which (Fig. 6) engages under relative circumferential positions shown in said a pin 62 laterally extending from a slidable rod Fig. 9. At about this point in the knitting cycle 63 which terminates at one end in a movable the movable blade 64 is automatically actuatedin blade 64 of an auxiliary cutter. Blade 64 is nor- 7 the manner hereinbefore described so as to sever the yarn Severance l2 closely adjacent of the auxiliary cutter or some equivalent means ha under the yarn l2 and then to the same through the eye I 4.

As will be apparent from inspection of Figs. 9, 10 and 11, thenon-automatically actuated clamp 34 serves to clamp the yarn l2 and retain other needles.

Continued rotation of the needles from the position shown in Fig. 10 to that shown in Fig. 11

the yarn [2 to be carried the forks constituting the l2 not passing when the said tial-course knitting.

The main clamping and cutting mechanism, comprising the clamp 24 and cutter 30, 3|, is not complete courses. cutting mechanism 64, 65 serves to sever the yarn l2 during the knitting of partial courses only, such auxiliary cutting mechanism 64, 65 not being adapted tosever the yarn I2 when it is withdrawn from feeding relation with respect to the needles as at the completion of high splice or the wrap stripe threads I3, passing through a recess 21 in the plate and recitations in I claim:

course of knitting; yarn floats at one adjacent to the last wale having connections including a two'- thereof being in constant yarn guide, the other arm thereof being positioned adjacent to the yarn severing means for the splicing yarn, the severing means consisting of relatively movable yarn severing members, an element movable therewith and adapted to be engaged by the second mentioned lever arm, the two-armed lever connection between the splicing yarn guide and the splicing yarn severing means causing relative separation of the said yarn severing members upon movement to non-feeding position of the splicing yarn guide, and causing relative movement of the yarn severing members to yarn severing position upon the movement of the splicing yarn guide to active, feeding position.

6. In a circular pendent needle type, needles and yarn guides, one of the said yarn guides adapted to feed a reinforcing yarn to certain of the said needles only, and during the knitting of a number of courses; means acting in cooperation therewith to sever the said reinforcing yarn adjacent to the last wale having knit therein the reinforcing yarn, said means consisting of a lever one arm thereof resting upon the reinforcing yarn guide and movable therewith, the severing means having an element thereon adapted to be engaged by another arm of the said lever to position the severing means to receive the reinforcing yarn when withdrawn from feeding relation with respect to the needles, the severing means thus being positioned to receive the reinforcing yarn by movement of the reinforcing yarn guide to idle, non-feeding position, and moving to sever the said reinforcing yarn when the said guide moves to active, feeding position.

'7. In a circular, independent knitting machine, needles and the splicing yarn; armed lever, one arm engagement with the splicing movable yarn guides for feeding yarns thereto, means adapted to clamp and sever yarns interchangeably fed to the needles during the knitting of a stocking, and means actuated at least once during the knitting of each course to sever one of the yarns and by movement of one of the yarn guides to yarn feeding position, there being mechanical connections between the yarn guide and the yarn severing means second mentioned whereby said movement of the said guide to yarn feeding position causes the yarn severing means second mentioned to sever the yarn last mentioned.

8. In a knitting machine of the independent needle, circular type, yarn guides for feeding a main or body yarnas well as a reinforcing yarn to the needles, means for clamping and severing a yarn withdrawn from feeding relation with respect to the needles said means including an element acting at all times to of the yarns, and means adapted to sever the high splice and double sole yarn, the parts being so related that said mentioned elementwill hold the resultant yarn floats until the said yarn is knit in by the needles for the following course.

9. In a knitting machine, yarn guides, certain of the guides adapted interchangeably to feed yarns to the needles, means acting in conjunction therewith to sever the yarns withdrawn from feeding relation with respect to the needles and including an element to clamp the severed ends,

knitting machine of the indeauxiliary means adapted to sever once for each course of knitting yarn knit in for partial courses only, the severing occurring at one end only of the knit in partial courses, the parts being so related that the yarn clamping element will temporarily retain the ends of the yarn cut by the auxiliary severing means.

10. In a knitting machine, yarn guides, certain of the guides adapted interchangeably to feed yarns to the needles, means acting in conjunction therewith to sever the yarns withdrawn from feeding relation with respect to the needles and including an element to clamp the severed ends, and means to sever at least once for each course of knitting yarn knit in for partial courses, the parts being so related that the clamping element will temporarily retain the ends of the yarn out by the auxiliary severing means.

11. A circular knitting mac 'ne having a rotary needle bed and means for feeding yarns to the needles including one yarn to be knitted by less than all the needles and during the knitting of a plurality of courses, a movable guide for presenting and withdrawing the yarn last mentioned to the needles, mechanism for severing the said yarn during the knitting of each course including connections between the yarn guide and severing element so that when the yarn guide is moved the yarn severing mechanism is acted upon to effect the severing of the yarn.

12. In a knitting machine, a yarn feeder, mechanism for moving said feeder into and out of yarn-feeding position, a yarn cutting device, means directly controlled by said feeder for actuating said device to cut the yarn, the actuation of the device being effected after the yarn has been withdrawn from feeding position, by movement of the feeder.

13. A circular knitting machine of the independent needle type having a rotary needle cylinder, means for feeding one or more yarns to the needles, means for severing any of said yarns when withdrawn from feeding relation with respect to the needles after knitting complete circular courses, means for feeding one of said yarns partial courses, said severing means not being adapted to sever the partial course yarn during the knitting of partial courses, other yarn severing means adapted to sever the partial course yarn at least once during the knitting of each partial course, said partial course yarn severing means not being adapted to sever the yarns withdrawn after the knitting of complete courses, in combination with means for wrapping one or more threads around selected needles during the knitting of the hereinbefore mentioned partial courses and in such a manner as to provide floats of a wrap thread from course to course on the inner face ofthe fabric, the hereinbefore mentioned severing of the partial course yarn from course to of said wrap thread to course, and other means for acting upon the wrap thread floats to guide them so that the said floats are maintained below the yarn severing mechanism so as not to foul the same.

AUGUSTIN GAGNE.

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