US2476344A

US2476344A - Knitting machine

Info

Publication number: US2476344A
Application number: US622324A
Authority: US
Inventors: George O Young
Original assignee: VF Corp
Current assignee: VF Corp
Priority date: 1945-10-15
Filing date: 1945-10-15
Publication date: 1949-07-19
Anticipated expiration: 1966-07-19

Description

.- G; Q'YOUNG Jul 19 KNITTING MAC INE 9 Sheefs-She t 1' Filed 0st. 15, 1945 July 19, 1949. G. o. YOUNG KNITTING MACHINE Filed Oct. 15, 1945 9 .Sheets-Sheet 3 9 I I @Lemye 0 Vol/0W,

July 19, 194.9. G. o. YOUNG KNITTING MACHINE 9 Sheets-Sheet 4 Filed Oct. 15, 1945 m a o fye' U Yauny,

July 1&1949- o. YOUNG 7 2,476,344

KNITTING MACHINE.

Filed Oct. 15, 1945 9 Sheets-Sheet 5 July 19, 1949'. GL0. YOUNG KNITTING MACHINE 9 Sheets-Sheet 7 Filed Oct. 15, 1945 July 19, 1949. I G. o. YOUNG 3 I KNITTING MACHINE Filed Oct. 15, 1945 9 Sheets-Sheet 8 George 15 Mauwy,

G. o. YOUNG KNITTING MACHINE July 19, 1949.

' 9 Shets-Sheet 9 Filed Oct. 15', 1945 ECCENTHIC 6 6 7 3 m. C& n mN 0 TU NR NT E m as E 6 .3

E-CdENTHlOIZG INVENTOH,

MUM vm 0 6 W m V E N m T T A Patented July 19, 1949 George. 0 Young, Robesoniit, Fa assijgi gr to. 'VanityFair Mill's, Inc., Reading; E35,}?QIII!) tion of Pennsylvania Application October 15, miseseriam i 62%,321; 23 claims; (o1: 56 -86) My present. invention: relates to. knitting ma chines. of the .flat'or. tr-icot type.

Among the objectsof'my invention are-the fol.- lowing:

1. To provide a. simple, effective machinefor. 5 knitting with none-swinging. threadguide or guides by causing the;- needlehooks. to-trave1jse a double loop or figure; 8 path; the lower. loop: passing into-thezsinkers and the. upper loop. pass ing the thread guides, the movements of the needle hooks throughsuch. path being, such as to pass the, threads on the guides on the up strokes ofthe needles,.hook-the; threads on thedcwn strokes, draw; them'through the previously: formed loopsand: knock-over 2. To provide-animhnoved thread take-up and: let out. mechanism; which operates in time. with the needles and keeps the thread taut atalli-times as the thread is. drawn and:slacke-d .by.- theneedles due to the. peculiar path; the needles; take; 20

3. To provide improvedithread; guides: and supports of such-construction thattheguides may be swung, to difierent: angular positions and held there when adjustments orrepiacementsofi the uides become-necessary by virtue oiwhich when more. than one;.threadguide: set; is. used on; the machine, the frontset'maybe swung; out of=the way to give; easy accessto; the=other1 set, all With? out disconnecting; the threadiguide bars from the; machine;

4. To provide; a. machine: which. is. especially adapted to use the; needles which constitutesthe invention; off one; RoyrGa. Amidom for: which: he.- filed'an applicationiforpatent-on August; 18,; 194e,. Ser. No; 550,051; nowc-Batent. N01. 231333951:

5. To provide: azsi'mplameans; for? operating, the needletongueszto openiandielose-the needleehooks: at thev proper; timesz;

6'. To provide a.- noveliresilienttlireaditensioni 4 device over which-the .threadipasses tactile. thneadi guides;

'7. In generalitaptomd'e;amachine which operate at; high: speed: withia minimumof; Vibffii-- tion';

8. To: so position: thee-thread: guide.- (or guides) supporting meansztl iatt tliezthreadihaseits :direoi tion. change'di-very cl'osec tether, ends; ofitlie". guide, thus d'ampeningi any fluttering eifects 'oiithe'yam at this:point;.

9. To so position tliewthreadl guide (or. guides"): supporting means-.1 that is: necessary for thee thread? to; run parallel; tattle-i andibetween them throughout; the: lengthzioi the; guides;.

thus: further: damneningzlofi therthreads: is? proe- 51 2 videdl as the, giiidesmoyein a horizontal direction.

1'0. To provide; because .,oc thedouble 1001p needle path, sinkers which are stationary,.thus further simplifxing, theconstruction off; the machine Other. objectsfwill in. part'lfie obvious and in will; be. pointed out. hereinafter.

To the. attainment of the aforesaid objects, and ends; the. invention also. residesin those novel details of construction,v combination and arrangementoi parts,whichwilliliereihafter be first fully described and .thenwilll be. specifically pointed out in: the. appendedclairns;reierenoe being. had to. the accompanying drawings in which:

Fig. Lisa frontelevationiofa machine embodying my. invention par.tsl being, broken. awas Fig. 21in atopipl'an. view ofia portion of the. $211118,

Fig: 3 is an'end; elevation, looking from right to leftfin Fig) 1. V

Fig, 4., is a; cross section on the line 4-4" of Fig, I. r

Fig. 5 is an. enlarged; diagrammatic view: showing the relative. proportions oi the parts: neces'- sary to cause the needle hooks to travel the. double loop path indicated in Fig, 6.

e s-'a;.dee. 1.; eni d s e io with the? needle. path: and sinker nib path indicated throughout'one cyclof the machine;

Figs; 6 to" 6 5 respetivelf indicatethe needle and nib positions with rem-(mo the sinkers andthetliread guides at'tlie points I-to l5 res-pec tively-of- Fig: 6%

Fig. 7-is a view similarto'F-iga 4 showinga seeon-d' embodiment; ofiinvention; when the sinnersare stationary;

Fig: 8 is a'vi'e'w simil'ar toFi ga- 6; with-the-needle path: indicated with. respect to the thread guides and the stationary sinkrs... I

Figs-.1 891w; 8l respeotivelwindicate the: needle pOSitiOHSaat thepointsai to}. l5; in; Fig. 8:

Fig. 9: is aadetailiviewi of one: ofithe" adjustable. thread: gmde-baresupporting; arms;

Fig. l0 is a. viewsimilar:teal-lie,v 9- of a; modification.

Fig; lb isya detail. front; elevation of. some of the partsshown in Ei'giT-z Fig:- 12: is a. detail; planzview hereinafter again referredto;

Fig;- 1'3,= is. a. view similazrto; Fig, 7; showing a modification. that may; he used: to: produce the need1e path a showmineeithen-nigi 6- or Fig. 8;

In, thegdrawingsi in like numerals; and

letters-of:reienenneimditateilike nartsr in? allzthe.

3 figures, I to I5 represent points in the figure I3 path of the needle hooks in Figs. 6 and 8.

The cross or spacing frames I5 are connected at suitable intervals and braced by pipes I41. Mounted in suitable bearings 64, in the cross frames I6, is a rotatable shaft I7, that may be the first motion shaft of the machine to which power is applied in any well known manner. A rock shaft I8 is also mounted in suitable bearings 65. The rock shaft I8 is bored transversely through its axis to provide bearings I 9 for hollow shafts or rods which carry bifurcated heads 2I on which the needle bar 221 is secured in any suitable way. The heads 2I also carry cross rods 21 to which the tongue bar 26 is attached. The cross rods 2'! have movement in the direction of their axes, in the bifurcations of the heads. The rods 2'3 carry rollers 28 and are spring pressed, as at 29, in a direction to cause said rollers to contact stationary cams 32 and open the needle hooks. The cams 32 are carried by fixed channel bars 3| as best shown in Fig. 4. A stop nut 39 is provided on each rod 27 for the usual purpose.

The needles 24 have their bases'23 removably mounted on the needle bar 22 while the tongues 33 have their bases removably mounted on the tongue bar 26. It should here be stated that the tongues are anchored inthe hooks of the needles and close the hooks by being swung laterally with the anchorages as fulcrums. When the bases 25 are moved away from the bases 23 the needle hooks are closed and when the bases 25 are moved toward the bases 23 the needle hooks are opened.

Mounted on the first motion shaft Il are eccentrics 34 that turn in straps 35 having caps 36. The rods 23 are pivoted to the straps 35 at 33'.

A second eccentric carrying shaft 38 is journalled in bearings 63 and carries eccentrics 39,

straps 48 and caps 4|. The straps 40 are pivoted at 43 to arms 42 which are rigidly secured to the rock shaft I8 as at 41. The shaft 38 is driven from the shaft I! at twice the speed of said shaft I! by a sprocket and

chain connection

44, 45, 46.

The sinkers 49 are mounted on a fixed support or sinker bar 48. In. the embodiment of my invention illustrated in Figs.. 1 to 6 the sinker nibs 54 are endwise movable over the sinkers ie. The sinker nibs are mounted on a sinker bar 53 that is secured to the heads 52 which heads are car ried on hollow rods 5I that pass through bearing apertures in afixed shaft 53 and are pivotally connected at 59 to the straps 57 which, with their caps 58 embrace eccentrics 5&3 on a third rotatable shaft 55. The shaft is driven from the shaft H at the same speed by a sprocket and chain drive 50, BI, I52.

and 61 indicate fixed non-rotatable rods that carry the thread guides. These rods are provided with collars in the preferred construction) 68 having splines 69 to fit the grooves in the thread-guide-bar-carrying arms It and Ti later again referred to.

Other rods I3, 14 are fixedly held in the frame members IS. The

rods

66, 67, F3 and I4 may be held from turning by means of set screws I2. The rod I3 is set above and, preferably, somewhat forward of the rod I4 and these rods carry spring metal plates 15 and I6 respectively, the outer edges of which are curved down to permit the threads T and T respectively to slide over without cutting. The resilient plates l5, i5 act 4 as thread tensioning means and exert a uniform tension throughout their entire lengths.

The shaft I8 of the lower beam 'I'I lies in bearings I9 in the end frames I6 while the shaft 81 of the upper beam 89 lies in bearings 82 in the frames.

The thread take-up and let-off mechanism, which constitutes a part of-my invention, comprises a stub shaft 83 that is journalled in suitable bearings in an end frame I6 and carries a spur gear 85 that meshes with a spur 92 on the shaft SI of the lower let-off and take-up roller 95. A bell crank lever 88 is pivoted on the shaft 33. Its short arm carries the shaft SI while its long arm carries a cam-engaging roller H4. An upper stub shaft 84 has a gear 86 that meshes with a gear on the shaft 94 of the upper takeup and let-off roller 93. The shaft 94 is journalled in the short arm of a second bell crank lever 89, the lever 89 being pivoted on the shaft 84 and carrying on its long arm a cam-engaging roller II5. The

shafts

83 and 84 are connected bya sprocket and chain drive 81. The shaft 83 is driven from shaft 55 by mechanism best shown in Fig. 3 by reference to which it will be seen that a worm IIlI on shaft 55 meshes with a worm gear I00 on a counter shaft 91 that is journalled in bearings 98 and carries a worm 99 which meshes with a worm gear 96 on the shaft 83.

A spur gear I02, on shaft 55, meshes with a spur gear I93 on a short shaft I64 that is journalled in bearings in an end frame and in a bracket N35. The shaft I04 has a worm III'E that meshes with a worm gear I I I on the pattern wheel shaft I131. The shaft I 9'! is journalled in suitable bearings I08 and carries the pattern wheels IE9 and H0 for the front and rear thread guides 76 and fl respectively.

The rollers H4, H5, Figs. 2 and 4, engage cams H2, II3, respectively, against which the rollers are held by springs III.

I I8 is the cloth guide roller over which the cloth passes to a suitable take-up roll (not shown).

Front thread T is taken from the upper beam, passed around the roller 93, over an upper guide bar I21 and from thence over the upper tension plate I5 and down through the eye of the front guide I24 while back thread T is passed from the lower beam around roller 99, over a guide bar I22 and over the lower tension plate It down through the eye of the back guide I25.

Referring now to Fig. 10 it will be seen that instead of the spline and groove connection between the arms (In or I I) which carry the thread guide bars, the arms I23 are adjustably held on thesupporting rod 66 (and if desired 61) by at least one set screw I46. Each arm I23 has a dovetail slot or groove II9 to receive the dovetail I20 on the slide block I5I to which slide blocks the guide bar M5 is secured. The guide bars I45 (front and back) have extension rods I48 at their ends. The rods I48 at one end carry rollers I49 (see Figs. 1 and 2) that are held in engagement with the pattern wheels I99, III! by the springs I5I attached to brackets I50 on the other ends of the rods I48 and anchored to a frame I6.

Referring now to Figure 7 showing a second embodiment of the invention, it will be seen that the shaft I1 is provided with eccentrics I26 around which are straps I21 and caps I28, each strap I21 being pivoted at I39 to a link I32 whose other end is pivoted at I38 to the strap I30 of an eccentric I29 on the. shaft 38, the usual cap I 3| being'provided' A shortarm I33 is secured to the rock shaft I8 and has a slot I 34. The pivot 53% is preferably carried by a block I31 that is adjustably secured in the slot I34.

In the embodiment shown in Fig. '7, each sinker I40 has an integral nib I41, while a second or auxiliary nib I44 cooperates with the nib MI and sinker Hit. The nibs I44 are carried on a nib bar hi2, carried on arms I43 secured to suitable supports as, for instance, the front rod 66.

In Fig. 13 the link I35 is shown non-adjustably pivoted to the arm I33 It should be understood that the eccentric means for rocking shaft I8, reciprocating the needle and tongue bars,'the sinker nib bar and operating the thread take-up and let-offrollers, etc. are duplicated at each end of the machine. Also the proportions or dimensions of parts given in Figs. 5 and 13 are only approximate'an'd may be somewhat varied to attain the double'loop or figure 8 shape of the pathoftravel P of the needle hook.

By reference to Figs. 5, 6 and 6 to 6 inclusive,

the operation of the first embodiment of my invention will, it is' thought, be clear to those skilled in the art. With the needle 24 (and tongue 33) at its lowest point (Fig. 6) it will have drawn the threads T and T 'through the 'previously formed loop L asthe needle leaves the zero position and begins to rise, the shaft I8 is rocked counter-clockwise in 5, thus moving the eye of the needle to the left. This'rnovement to the left continues until a point approximately midway between

points

2 and 3 in Fig. 6, i. e., between the position of Figs. 6 'and 6 is reached, whereupon the eye of the needle begins to move to the right in Fig. 6, i. e.,'shaft l8 begins to rock clockwise, and this clockwise movement continues until the needle reaches thelto'p of its stroke at point 8, Fig. 6 (Fig. 6*); From that point 8, as

the needle starts down shaft 'I8'is ro'ckedcounter clockwise in Fig. 5 until point 'I I is reached (Fig. 6 whereupon shaft I8 begins to' rock clockwise again and continues to do so until point l3 in Fig. 6 (Fig. 6 is reached when shaft ['8 begins to turn counter-clockwise again and continues to do so until the zero point Fig. 6 (Fig. 6) is again reached, completing a knitting cycle. It will then be seen that in passing through one cycle of operation the hook of the needles moves in apath P resembling a closed figure B.

As the needle starts to rise the sinker nib 5t advances with a continuous motion (as does the needle also), the diife'rentpositions of the nib 5d at points corresponding to the needle hook position-points in Fig. 6 are indicated by similarly numbered points on a horizontal line H. The positions of thenib in Figs. 6 to '6 inclusive correspond to the position points I to I5 on line H in Fig. 6. Referring particularly to Figs. 6 to 6 inclusive, it will be seen'that as the needle rises from the position of Fig. 69, before it rises suiiiciently so it would lift the loop 11 the nib 54 will have advanced over that 100 (Figs. '6 6 As the needle rises the thread about the needle will be held down as a second loop L (Fig. 6 is formed. After the'needleshall have risen past the position shown in Fig. 6 sufiiciently to clear the thread guides "I2 5, -HM (see Fig. 6 the guides are racked by the pattern wheels 'so that on the down stroke of the'needlej it will hook the threads (Figs. 6 6 and -6 to draw the threads throughthe second loop L As soon'as the point of the hook reaches" the sinker nib (Fig. 6 the roller 28' (Fig. '5 willride on cam 52 and move over (right to left,'Fig."5)-"the tongue bar ZB-and close the gap between the point of the hook and the shank of the needle. This gap remains closed until the thread has been drawn through the loop L (Fig. 6 after which it is again opened as the head 2| is tilted to the left in Fig. 5 in moving from position of Fig. 6 to position Fig. 6 After reaching the position shown in Fig. 6' the nib 54 begins its return movement so as to leave the threads between'the guides and needles free.

The operation of the embodiment of my invention shown in Figs. 7, 8, and 8 to 8 is essentially the same as the first embodiment, the position of the gap between the two nibs I l-I and IM being so located that when the needle drawing down the thread reaches theposition shown in Fig. 8 it will line up with the gap and'the threads will be clear of the sinke'rs.

As will be seen by reference to Figs. 6 to 6 the loops L L (knit of fabric) are moved to the right from the position of Fig. 6 to the position of Fig. 6 and are then moved back again to about the position shown in Fig. 6 due to the lateral movements of the needle. This results in a pulland-slack action on the threads coming frcm'the beams via the thread guides and must be com pensated for. In order to eccompiish this the take-up and let-out mechanism shown in the drawings and hereinbefore described has been devised. The cams H2, H3 are so out as to coop erate with the needle operations and movements, that when the threads at the needles tend to slacken the arms or levers 88, 89 will be rocked to move the rollers toward the beams to take up slack and away from the beams to let out the thread as required. The resilient plates 55, it take the place of the usual spring loaded tension rods heretofore employed in tricot machines, to take care of slight variations in the thread tensions.

The arms IS and II, respectively, carry the bars I2I and IBE on which the thread guides I24 and I25, respectively, are mounted.

The thread guides I25 and ltdhave eyes 22% and I25 respectively. The guides only move longitudinally of the machine and do not swing back and forth.

While I have shown and described a new and improved thread guide bar mounting for a knit ting machine and also a new and improved; tensioning means for a knitting machine, I make no claim per se to the same as they comprise the subject matter of divisional applications filed the 10th day of September, 1946, Serial No. 695,920, now Patent Number eo1,187, and the 10th day of October, 1946, the No. 702,511, new Patent Number 2,442,796.

From the foregoing description taken in connection with the accompanying drawings it is thought the construction, operation and tages of my machine will be clear to those skilled in the art to which it appertains.

What I claim is: I

1. In a knitting machine; stationary sinker-s; thread guides which move only longitudinallyof the machine above the sinl-zers; sinker nibs; hook knitting needles mounted to move up and down through the sinkers and nibs; and means causing the needle hooks to travel in a closed figure eight path in part within the sinkers and in part between and above the eyes of the thread guides, the movement of the needles being such that the backs of the needles will engage the thread between the guides on the up strokes of the needles and the needles will hookthe thread on the down strokes; and means to close the needlehooks as the points of the hooks enter the sinkers on the down strokes of the needles, said means to close the needle hooks comprising needle closing tongues carried by the needles; and means to operate said tongues in timed relation to the operations of the needles for knitting purposes.

2. In a knitting machine; stationary sinkers; thread guides which move only longitudinally of the machine above the sinkers; sinker nibs; hook knitting needles mounted to move up and down through the sinkers and nibs; and means causing the needle hooks to travel in a closed figure eight path in part within the sinkers and in part between and above the eyes of the thread guides, the movement of the needles being such that the backs of the needles will engage the thread be= tween the guides on the up strokes of the needles and the needles will hook the thread on the down strokes; and means to close the needle-= hooks as the points of the hooks enter the sinkers on the down strokes of the needles, said means which causes the needles to move including a rock shaft having bearing holes through it, shafts reciprocative in said bearing holes and carrying said needles, means to reciprocate said shafts in said bearing holes, and means to rock said rock shaft in timed relation to the reciprocations of said needle-carrying shaft for purposes de-- scribed.

3. In a knitting machine; stationary sinkers; thread guides which move only longitudinally of the machine above the sinkers; sinker nibs; hook knitting needles mounted to move up and down through the sinkers and nibs; and means causing the needle hooks to travel in a closed figure eight path in part within the sinkers and in part be tween and above the eyes of the thread guides, the movement of the needles being such that the backs of the needles will engage the thread between the guides on the up strokes of the needles and the needles will hook the thread on the down strokes; and means to close the needle-hooks as the points of the hooks enter the sinkers on the down strokes of the needles, said means which causes the needles to move including a rock shaft having bearing holes through. it, shafts reciprocative in said bearing holes and carrying said needles, means to reciprocate said shafts in said bearing holes, and means to oscillate said rock shaft twice to each reciprocation of said needlecarrying shaft and in timed relation to the same.

4. The machine of claim 2 wherein needle closing tongues are carried by the needles; and means are provided to operate said tongues in timed relation to the operations of the needles for knitting purposes.

5. The machine of claim 3 wherein needle closing tongues are carried by the needles; and means are provided to operate said tongues in timed re lation to the operations or the needles for knitting purposes.

6. In a knitting machine wherein hook knitting needles, thread guides which move only longitudinally of the machine, stationary sinkers, and sinker nibs are employed, the improvement which includes means to cause the needles to pass up from the sinkers and through the thread guides without hooking the threads and then pass back to the sinkers and hook the threads on the return trip, said means including an oscillatable shaft having bearing apertures passing transversely through the shaft and intersecting the axis thereof, needle-carrying shafts mounted to be reclprocated in said apertures, and means to reciprocate said needle-carrying shafts and os-- cillate said oscillatable shaft, there being two oscillations of said oscillatable shaft to one reiprocation of said needle carrying shaft.

7. In a knitting machine employing thread guides, stationary sinkers, sinker nibs, hook needles and tongues therefor, the improvement which includes an oscillatable shaft bored transversely along parallel lines intersecting the axis of the shaft to form bearings; a needle bar; shafts passing through said bearings and carrying said needle bar; eccentric and strap connections so as to reciprocate said needle-bar-carrying shafts; means to oscillate said oscillatable shaft in timed relation to the reciprocations of said needle-bar-carrying shafts to effect the path of travel of the needles so as to pick up thread on the down strokes only of the needles; and means to close the needle hooks after the thread has been hooked and before the point of the hook enters a previously knit loop.

8. In a knitting machine the improvement which includes; a first eccentric shaft and a second eccentric shaft; means to rotate said shafts with the second shaft making two revolutions to one of the first shaft; an oscillatable shaft having transverse bearing apertures through it; needle-bar-carrying shafts reciprocatably mounted in said transverse bearing apertures; eccentrics on said first shaft; operative connections between said eccentrics and said needlebar-carrying shafts; a needle bar carried by said needle-bar-carrying shafts; hook needles mounted on said bar; eccentrics on said second shaft; arms on said oscillatable shaft; operative connections between said last named eccentrics and said arms. 4

.9. The improvement of claim 8 wherein a tongue bar is carried by said needle-bar-carrying shafts; tongues carried by said tongue bar and cooperating with said needles; and means to move said tongue bar on said needle-bar-carryingshafts to close and open the needle hooks in timed relation to the needle movements during the knitting cycle.

10. In a knitting machine having thread guides which move only longitudinally of the machine, sinkers, and nibs; two eccentric shafts each having eccentrics and one shaft rotating at twice the speed of the other; an oscillatable shaft having bearings passing diametrically through the same; a set of needle-bar-carrying shafts reciprocative in said bearings; a needle bar carried by said last named shafts; eccentric strap connections between said reciprocative shafts and the eccentrics on the slower of said eccentric shafts; arms on said oscillatable shaft; operative connections between said arms and the eccentrics on the faster of said eccentric shafts by virtue of which for each complete reciprocation of said set of reciprocative shafts said oscillatable shaft will be given two complete oscillations for purposes described; hook needles on said needle bar; and means for closing the hooks of said needles while they pass into the spaces between the blades of the nibs and sinkers.

11. In a knitting machine having thread guides which move only longitudinally of the machine, sinkers, and nibs; two eccentric shafts each having eccentrics and one shaft rotating at twice the speed of the other; an oscillatable shaft having bearings passing diametrically through the same; a set of needle-bar-carrying shafts reciprocative insaidbearings; a needle bar carried by said last namedshafts; eccentric strap connections between said reciprocatlve shafts and the eccentrics on the slower. of said eccentric shafts; arms on said oscillatableshaft; operative connections between said armsrand the eccentrics on the faster ofsaid eccentric shafts by virtue of which for each complete reciprocation of said set of reciprocative shafts said oscillatable shaft will be given two. complete oscillations for purposes described; hook needles on said needle bar; means for closing the hooks of said needles while they pass into the spaces between the blades of the nibs and sinkers, said last named means including a tongue-carrying bar carried by said set of reciprocative shafts; and means cooperating with said tongue-carrying bar'for operating the same in timed relation to the reciprocations of said set of reciprocative shafts.

12. In a knitting machine having thread guides which move only longitudinally of the machine, sinkers, and nibs: two eccentric shafts each having eccentrics and one shaft rotating at twice the speed of the other; an oscillatable shaft having bearings passing diametrically through the same; a set of needle-barmarrying' shafts reciprocative in said bearings; a needle bar carried by said last named shafts; eccentric strap connections between said reciprocative shafts and the eccentrics on the slower of said eccentric shafts; arms on said oscillatable shaft; operative connections between said arms and the eccentrics on the faster of said eccentric shafts by virtue of which for each complete reciprocation ofv said set of reciprocative shafts said oscillatable shaft will be given two complete oscillations for purposes described; hook needles on said needle bar; means for closing the hooks of saidneedles while they pass into the spaces between the blades of the nibs and sinkers said last namedmeans includin heads on said set of reciprocative shafts; tongue-bar-carrying rods movably mounted on said heads, a tongue-carrying bar carried by said rods, tongues on said tongue-carrying bar and cooperatively associated with said needles; and means to move said tongue-bar-carrying rods hack andforth to close and open the hooks of said needles in timed relation with the movements of the same.

13. A machine according to claim 12 wherein stationary cams are engaged by said tongue-barcarrying rods when the needle hooks are draw ing threads through previously knit loops.

14. A machine according to claim 12 wherein is provided a stationary shaft having bearings; a third eccentric shaft; a set of nib-bar-carrying shafts reciprocative in said stationary shaft bearings and on which said nibs are mounted; a set of eccentrics on said third eccentric shaft and operatively connected to said nib-bar-carrying shafts: means for turning said third eccentric shaft at the same speed as that of the slower of the first mentioned shafts.

15. A machine according to claim 12 wherein is provided a stationary shaft having bearings; a third eccentric shaft; a set of nib-bar-carrying shafts reciprocative in said stationary shaft bearings and on which said nibs are mounted; a set of eccentrics on said third eccentric shaft and operatively connected to said nib-bar-carrying shafts; means for turning said third eccentric shaft at the same speed as that of the slower of the first mentioned eccentric shafts; at least one beam and a thread take-up and let-out mechanism for the same, which mechanism includes bell crank levers carrying a roller around which the thread from the beam passes; and cams on :10 said third eccentric shaft to engage said levers to operate the same in timed relation to the operations of the needles. 7 u H t 16. In a knitting machine having thread guides which move only longitudinally of the machine, sinkers, and nibs: two eccentric shaftsgeach having eccentrics and onesh'aft rotating; at twice the speed of the other; an oscillatableshaft having bearings passing diametrically through the same; a set of needle-bar-carrying shafts reciprocative in said bearings; a needle bar carried by said last named shaftsyeccentric strap connectionsgbetween said reciprocative shafts and the eccentrics on the slower of said eccentric shafts; arms on said oscillatable shaft; operative connections between said arms and the eccentrics on the faster of said eccentric shafts; by virtue of which for each complete reciprocation ofsaid set of reciprocative shafts said oscillatab'le shat-twill begiven two complete oscillations for purposes described; hook needles on said needle bar; means for closing the hooks of saidneedles while they pass into the spaces between the blades .of the nibs and sinkers; at least one beam a take-up and let-out mechanism for the beam, whichmechanism includes aset of bell crank levers carrying a roller around which the thread fromthe beam passes; and cams on said third rotatable shaft with which cams said leversengageto be operated by the cams in timed relation to the movements of the needles; I v V p 17. In a knitting machine, thei-mprovement which includes: a first eocentric shaftanda second eccentric shaft; means to rotate said shafts with the second shaft' makingj two: revolutions to one of the first shaft; anjoscillatable shaft having bearing apertures; needle-har-carrying shafts reciprocative in said bearings; eccentrics on said first shaft; operativeconnectionsbetween said eccentrics and said needleebar carrying, shafts; a needle bar carried by. Said needle bar-carrying shafts; hook needles mounted on said bar; eccentrics on said second shaft; armson said oscillatable shaft; operative connections between said last named. eccentrics and said arms; a tongue bar carried by;sai1d needl'eebar-carrying shafts; tongues carried. by saidtongue bar and cooperating with said needles; and means to move said tongue bar on said needle bar-carrying shafts to close and open the needle hookslnti-med relation to the needle movements during the knitting 18. In a knitting machine having thread guides which move only longitudinally of the machine, sinkers, and nibs: two eccentric shafts each having eccentrics and one shaft rotating at twice the speed of the other; an oscillatable shaft having bearings; a set of needle-bar-carrying shafts reciprocative in said bearings; a needle bar carried by said last named shafts; eccentric strap connections between said reciprocative shafts and the eccentrics on the slower of said eccentric shafts; arms on said oscillatable shaft; operative connections between said arms and the eccentrics on the faster of said eccentric shafts by virtue of which for each complete reciprocation of said set of reciprocative shafts said oscillatable shaft will be given two complete oscillations for purposes described; hook needles on said needle bar; means for closing the hooks of said needles while they pass into the spaces between the blades of the nibs and sinkers, said last named means including heads on said set of reciprocative shafts, tongue-bar-carrying rods movably mounted on said heads, a tongue-carrying bar carried by said 11 rods, tongues on said tongue-carrying bar and cooperatively associated with said needles; and means to move said tongue-bar-carrying rods back and forth to close and open the hooks of said needles in timed relation with the movements of the same.

19. A machine according to claim 18 wherein is provided stationary cams engaged by said tonguebar-carrying rods when the needle hooks are drawing threads through previously knit loops.

20. A machine according to claim 18 wherein is provided a stationary shaft having bearings; a third eccentric shaft; a set of nib-bar-carrying shafts reciprocative in said stationary shaft bearings and on which said nibs are mounted; a set of eccentrics on said third eccentric shaft and operatively connected to said nib-bar-carrying shafts; means for turning said third eccentric shaft at the same speed as that of the slower of the first mentioned eccentric shafts; at least one beam and a thread take-up and let-out mechanism for the same, which mechanism includes bell crank levers carrying a roller around which the thread from the beam passes; and cams on said third eccentric shaft to engage said levers to operate the same in timed relation to the operations of the needles.

21. In a knitting machine having thread guides which move only longitudinally of the machine, sinkers, and nibs: two eccentric shafts each having an eccentric and one shaft rotating at twice the speed of the other; an oscillatable shaft having bearings; a set of'needle-bar-carrying shafts reciprocative in said bearings; a needle bar carried by said last named shafts; eccentric strap connections between said reciprocative shafts and the eccentrics on the slower of said eccentric shafts; arms on said oscillatable shaft; operative connections between said arms and the eccentrics on the faster of said eccentric shafts by virtue of which for each complete reciprocation of said set of reciprocative shafts said oscillatable shaft will be given two complete oscillations for purposes described; hook needles on said needle bar; means for closing the hooks of said needles while they pass into the spaces between the blades of the nibs and sinkers; at least one beam and a take-up and let-out mechanism for the beam, which mechanism includes a set of hell crank levers carrying a roller around which the thread from the beam passes; and cams on said third 12 rotatable shaft with which cams said levers engage to be operated by the cams in timed relation to the movements of the needles.

22. In a knitting machine wherein knitting needles with hinged hook closing tongues are employed and wherein means are provided for reciprocating the needles and tongues and opening and closing the hooks, the improvement which includes: a rock shaft having bearing apertures; rods reciprocative in said bearing apertures; a needle bar carried by said rods; a main eccentric shaft; eccentrics'on said main eccentric shaft; eccentric straps connecting said eccentrics with said rods to reciprocate the same; at least one other eccentric on said main eccentric shaft; 2. second eccentric shaft; at least one eccentric on said second eccentric shaft; eccentric straps for each of the last two mentioned eccentrics; a cross link pivoted at its ends to said last named eccentric straps and having an intermediate linkarm integral therewith; an arm secured to said rock shaft and pivoted to said intermediate linkarm; and means for driving said second eccentric shaft at twice the speed of the first men tioned eccentric shaft.

23. A machine according to claim 2-2 wherein there is provided a tongue bar carried by said rods; hook needles on said needle bar; tongues on said tongue bar; and 'means for eifectively operating said tongue bar to cause the tongues to open and close the needle hooks in timed relation to the knitting cycle.

' GEORGE O. YOUNG.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,022,834 Welch Dec. 3, 1935 2,037,798 Kinsella Apr. 21, 1936 2,166,032 Wirth July 11, 1939 2,292,287 Peel Aug. 4, 1942 2,308,430 Bolden Jan. 12, 1943 2,333,697 Boaler Nov. 9, 1943 2,339,153 Cotterill Jan. 11, 1944 2,493,961 Amidon July 16, 1946 FOREIGN PATENTS Number Country Date 555,678 France Mar. 28, 1923