US2505372A - Warp knitting machine - Google Patents

Description

April 25, 1950 TE STRAKE 2,505,372

WARP KNITTING MACHINE I Filed Feb. 6, 1947 14 Sheets-Sheet 1 Ffy/ l NVENTOR LAMBERTUS TE STRAKE ATTORNEY Ap 1950. L. TE STRAKE WARP KNITTING momma:

14 Sheets-Sheet 2 Filed F eb. e. 1947 Fig. 2

YINVENTOR LAMBERTUS TE STRAKE BY ATTORNEY April 25, 1950 1.. TE STRAKE 2,505,372 WARP KNITTING MACHINE Filed 5 1947 v 14 Sheets-Sheet 3 INVENTOR LAMBERTUS TE STRAKE ATTORNEY April 25; 1950 TE STRAKE 2,505,372

WARP KNITTING umcam:

Filed Feb. 6; l947 14 Sheets-Sheet 4 INVENTOR LAMBERTUS TE STRAKE BY I ' "ATTORNEY 14 Shee'ts-Sheet 5 fly 5 L. TE STRAKE WARP KNITTING MACHINE INVENTOR LAMBERTUS TE STRAKE BY *2 ATTORNEY April 25, 1950 Filed Feb. 6, 1947 April 25, 1950 L. TE STRAKE WARP KNITTING MACHINE 14 Sheets-Sheet 6 Fild F eb, s. 1947 l NV EN TOR LAMBE RTUS TE STRAKE ATTORNEY April 25, 1950 L. TE STRAKE 2,505,372

WARP KNITTING MACHINE Filed FebLG, 1947 14 Sheets-Sheet 8 INVENTOR LAMBERTUS TE STRAKE ATTOR N EY April 25, 1950 TE STRAKE 2,505,372

WARP KNITTING uacnms Filed Feb. 6, 1947 14 Sheets-Sheet 9 INVENTOR LAMBERTUS TE STRAKE TORNEY April 25, 1950 L. TE STRAKE 2,505,372

WARP KNITTING MACHINE Filed Feb. 6, 1947 I 14 Sheets-Sheet 10 INVENTOR LAMBERTUS TE STRAKE ATTORNEY April 25, 1950 L. TE STRAKE WARP KNITTING MACHINE,

Filed Feb. .6, 1947 14 Sheets-Sheet 11 INVENTOR LAMBERTUS TE STRAKE ATTORNEY April 25,1950 TE sTRAKE I WARP KNITTING mum:

Filed Feb. 6, 1947 14 Sheets-Sheet 12 INVENTOR LAMBERTUS TE STRAKE BY Wk) ATTORNEY April 25, 1950 L. TE STRAKE WARP KNITTING MACHINE l4 Sheets-Sheet 13 Filed Feb. 6, 1947 INVENTOR LAMBERTUS TE STRAKE ATTORN E Y April 25, 1950 L. TE STRAKE WARP KNITTING mcnrm l4 Sheets-Skeet 14 Filed- Feb. 6, 1947 INVENTOR' LAMBERTUS STRAKE I BY AT TORNEY Patented Apr. 25, 1950' finbilieans in the Netherlands Manned-12,1946" '1 invention relates tetextl-le machines, and more pafticlil'aily to warp-knittingmachines, by means of which zigzag k -1fitted fabric may: be manufactnrea;

According to the invention 'fortwo -=ser-ies of latch needles movin zalternately the-directions of the needles by two series of thread "guides moving 't0 a-nd *in dliposite difetiotis 6W0 i-ziter'c'ros'sin'g t ad'sarpiesented*to eaoh needle ofthe "one series and thereupon also-two --inte1:- czossi fithreads areeresentedto a'dh need-le or the other sefies' in s'uehfa manner-pthat the intercrossing "'thieafls' will be'wfit "simultaneously in pairs m th ies'bebtilQthfiadsof tliheedles ar' fiIOsed"i fl by the lafdhe's, are --simu1tarieous1y clitawnthroug h *previous'ly made stitches and-ane "shoved onto the meats 'of the needles, which threadierdsse's, moreovenmay be presented eann time to different needles or the series, insuch a way thatadigzag kniifiabficis "obtained.-

In 'orden -to supply the outer needles-with warp waemheseat aeertain-momentnolonger reeeive-any wa'a p 'yarnfiaccording wthemvemion sep a'rat'e "auxiliary"-or-"aidditiorialwafip yains m'a y' bestipnlied' -to*the' oute'rneedlesaof eae seriesfo'i Ina-king a 'tvairp knit ed fabrid as ongitudinal e gesoiitheproperwin-main knitted-fabric.

All the above inen'tioned war p yams fmay lbe supplied "from warp =beams on which-they are 'wm pea cor-re's'poif'cling- -to 'the' desired zigzag and colors. This doe's'not altr the i'acfi that all warp yams may be of the same color.

In ordefitmtake avvay+who1ly 0r partiall -the width'elastie'ty of th nitted: abz ie-or for the surpasses-ext fer bothzpurposes, according he'mvefitidn mowoveaone-or more weft tnreans bl iefl to-j fliet-iiprdafing n ene eermovewtnread guides 1lxpm alllii36$h86ii8$i0f knitting "'45 manages and points.

"The inventive thou'ght e'ompri'sestalsoimodifioa tio'ns aim-- improvementsias wellas 1t'e'ehnical1y' equivalent embodiments of the warp knitting knahifiea A flatwarp kriittingmachine-amending :to -the lee-awosemester vlateh newnmtne direction oi J51 Olaims; (C1. 66-187 guides movable longitudinally of the (series ofneedles which are governed in such a manner, that first they fom n th r ead crosses at the places for the needles of the one series and then-at the V plaeeslfor-those of the other series -whereas the without" using a Jacquard machine and Without ii'sing knitting oams; spring beard needles or closed eye anedles;

1 ting machine-according tothe invention possesses tl ie favbrableprdperty of au-tomatically blocking ladder ing.

FhefinVention not only applies tothe' working of normal lshittinayarns,but-also permits zigzag k ttinfgoflcoarseand hardyavnsi The-machine my be eonsti ueted for each "knitting "width, whereas on -amachine "with great width also small fabrics may be knitted.

, ShaWls andfabrios for outerwearare examples of knitted memes; which may be knitted by a was? lsnitting machine according to the inventin.

tnrobjects andzstructural details of the tinvention will be apparent from the following deseriptio'n when re'a'd in conjunction with-thetaccompanying' --d1zawi-ng s illustrating only one exa'inple' of embodiment; :to which the invention 2 by no means is re'stiicted. :In the drawings: #Fig :1 is a frontee'levational view'on :a :small scale "6111a" zigzag warp' knitting machine" accord.- ing to ne invention,

" s'ideelevational view ofthe right hands'ide' ofi-themaehine,

Flg. 33is a side elevationalivie'wof theleft hand side-lofthe machine,

V "s'Figm4iis,afifiagmentary'verticalts'eotional view of the upper epOItiflIl of :the machinewaid sectional viewi-being'rtaken, gpanallel to themightahand-side oft'the-machine',

' sFigs. T5, 116, 7;-ar1d=18iillustrate diagramsaof 313119 operations:ofl'thermaehine,

;Fi:g.=i-9 -tis- -:a tfiagmentary :front relevati'onal view of: the driveiassociated with the:- warp yarn guide baraofz-themaehine;

Fig; .10 is a :fragmentaryside; elevational aViGW an the: upper epertiomor sthee left? hand :side;of-*-the Fig. 11 is a fragmentary front elevational view of the upper portion of the left hand side of the machine,

Fig. 12 is a fragmentary front elevational view of the upper portion of the machine, illustratin the needle beds and the warp yarn guide bars,

Fig. 13 is a fragmentary front elevational view of the upper portion of the machine, illustrating the mechanism for laying weft threads,

Fig. 14 is a sectional view of the upper portion of the needle beds, illustrating one of the weft thread carriers in its operative position,

Fig. 15 is a fragmentary front elevational view of the machine illustrating an automatic device for controlling the movements of the weft thread carriers,

Fig. 16 is a side elevational view of the mechanism shown in Fig. 15,

Fig. 17 is a diagrammatical illustration of a zigzag knitted fabric manufactured by a machine according to the invention, and

Fig. 18 is an elevational view of a cam mechanism controlling the movements of the warp yarn guide bars.

Referring now to Figs. 1-3, the fiat warp knitting machine according to the invention comprises a frame, including a right hand side piece I, a left hand side piece 2 and connecting pieces 3 connected with each other. In this frame an electromotornot shown-- is arranged for driving continously the main shaft '4 of the machine. Warp beams, 5, 5, 6, 6, I, I, are rotatably arranged on the frame for the supply of yarn to the needles as required for the knitting of the zigzag knitted portion of the fabric and of the edges of the fabric. The yarns coming from the four first-mentioned warp beams pass over a series of thread guides supported by arms 8, 9. The thread guides of the arms 9 are pivotally mounted on shafts and are pressed sideways by helical springs,-by means of which the yarn tension can be controlled. The yarn is warped on the warp beams in correspondence with the desired pattern and color arrangement and is supplied in the correct arrangement to the machine by the thread guides. p

; As best shown in Figs. 4 and 14, the machine comprises jtwoseparate frame pieces Id, at for twodifferent needle beds II, 2I, arranged at a sharp angle with respect to each other. II indicates the back needle bed and 2I indicates the front n'eedle bed.

- In the; back needle bed II latch needles I2 are slidably. guided in the direction of their longitudinal axis. They are jointly and removably arranged in a holder I3 closed bya cover plate I4. The holders I3 slidably engaged with guiding members I5 mounted on the frame are provided at their ends with pins slidably engaged with slots arranged inthe side walls of the frame. The pins of the holders I3 passing through said slots project somewhat outside said side walls. The projecting ends of said pins are, engaged with a needle drive to be described hereinafter, by means bf which the holders I3 with the needles mounted therein may be moved upwardly and downwardly; The needles are held in place at the upper ends of their shanks by a pressure bar I5 with felt cushion I7, which prevents the needles from tilting. Springs act on the ends of the pressure bar in such a manner, that the felt cushion keeps the needles in place and guides them properly. A warp 'guide' I8 in the shape, of a bar slidably arranged above the seriesof knitting points for the needles of the back needle bed II is .re'ciproe 4 cable longitudinally of the machine and serves as a guide for the warp yarns I9 coming from the warp beams 5, 5. The guiding means proper of the warp guides I8 are formed by V-shaped grooves cut into longitudinal ribs arranged on the bar I8, one for each yarn, therefore one for each needle of the back needle bed II. Corresponding parts of the front needle bed and the mechanisms associated-therewith are indicated by the reference numerals 2I-29; 2I indicates V the front needle bed, 22 the front needle, 23 the holders, 24 the cover plate, 25 the guiding members, 25 the pressure bar, 21 the felt cushion, 28 the warp guide and 29 the warp yarns. The latch needles I2 of the back needle bed II are lying with their paths of operation of their heads midneedles are carrying out opposite movements.

The warp guide bars I8, 28 perform horizontal opposite movements in such a manner that the yarns guided by one bar are crossing those guided by the other in the plane of either the front needles or the back needles as shown diagrammatically in the Figs. 5 to 8 inclusive.

In Fig. 5 the needles I2 of the back bed are in their highest position and the needles 22 of the front bed are in their lowest position. The crossing points of the warp yarns, hereinafter called the warp yarn crossings, formed by the position of the warp guides I8, 28, are ready for being drawn downwardly by the needles I2 of the back bed, towards the position shown in Fig. 6.

In Fig. 6 the needles I2 of the back needle bed are moved downwardly into a position at a distance of A; of the stroke away from their lowest position and the needles 22 of the front needle bed are moved upwardly into a position at a distance of of the stroke away from their lowest position. The needles of the back bed have pulled along with them the warp yarn crossings, so that there are no crossings any longer. I

According to Fig. 7 the warp guide bar I8 is moved to the right and thewarp guide bar 28 is moved to the left, relative to the position shown in Figs. 5 and 6, whereby new warp yarn crossings are formed. Contrary to Fig. 5, however, the warp yarn crossings are now formed adjacent to the needles of the front needle bed, said needles now being in their highest position, while the needles of the back needle bed are now in their lowest position.

According to Fig. 8 the warp guide bar I8 is moved towards the left and the guide bar 28 is moved towards the right. The needles 22 of the front needle bed have caught previously the warp yarn crossings and have pulled them downwardly during their movement into a position at a, dis: tance of /4 of the stroke away from their lowest position. The needles I2 of the back needle bed'are moved upwardly into a position at a distance of A of the stroke away from their lowest position.

The warp guide bars I8 and 28 are governed in such a manner that during the next cycle they are moving each one step (one needle pitch) more to the left (or to the right) that is to say as many. im s subs q t y s; rese by he pitterm (thiszigzag' ii Thereafter; they, mustzibez muvedi hack: in, the corresponding manner; v or; as; in: this'rxexample, they: may: return, fully to the startingpositiont. Thus; itei's possible to havezfor: a certain. patterni width: ofrepeats 1 of? e. g;. 245 needles (12mm the front; bed. and 121: in the bacle bed): with: asrpitchiofr 1.5mm: The width: of rep It willi now. be -describedihowsa machineaccorde ing tothe invention; operating corresponding to: the diagrams of Figs. 5-8 -mayl be: constructed:

Thcz-driveloj the-needles.

mentioned above the pins of the holders 13 (Fig. 4 )holdin'g the' -series of needl'es pass-throughsi'o'ts 'arraiiged' in the side walls of 'the machine paralleltothe'needlei-beds. The pinsof the' holder arranged in-theiront needle bed are driven in the samemanaer; but? only in opposite direction; asthepimof the holderarranged in;-theback nee- (1187 bed-: the" driveat the left hand side of" the nfiachine'is;the same'asthe drive at the right'hand side- 0f the inachineytherfore; it is sufificientto describe hereinafter only; the drive at the right hand side'of the-machinez' As best'shoWIr in; Fig; 2"; aneccentric sheave fixedto the main; shaft 4 isoperatively; engaged with an. eccentric strap,- in' the upper portion of which theleft-hand: screwrthreaded lower end of a cenneeen wodnz is; scretvedand locked hyac; counter-nut? The upper end of the connecting; rod; 3 21 is: provided: with right; hand: screw thread? aiid screwed into the bridge, piece of a fork 33' ai d': locked; This? forli carries a; pin: 34 slid'abl'y' engagedwith a slotji ofithe, arm 36 of'a. twoarmedios'cillating lever v 3 6; 3] 1 which may oscillate aro lndiarshaft t'fli Whereas' the length of'the" stroke ofthe arml36 of the lever 36, 31' may be; roughly, adjustcdfby an adjustment" ofthe length. off'the, connecting 110d 32, an additional fine ade llwtmentloi theistroke oijthe arm 35f may. be. obtained by? adieDIdcement andtfixing oiithe, pin 341m the,slot 3.5;; The leyer. 36j 3'lis connected; by;adjustablehconriecting rods}9,"40 withthepinsi arranged at. the.v ends. of the. needle holders l3.,

Uponrotationiof,themainlshaft.4the oscillating, level: 36, .31'..is.oscillatedhndidiiivesw theconn'ect! iri'g rods. 39,; 4.0; the pins. of; the needle. holdersl3}; wliich,.thi1s,. are, moved-,- upwardly, and, down, wardly. in theguiding members 15;. By changing};

the le'rigth of, thezcohnctiiig rods 39, 40; relative:

to each; other the positionmi the front needles: relative; to, the, back; needles. may; be. changed. Withithe: device as'shown, therefore an. exacted l Stmentu of mei'engthl or'stmret of, the front: needles and .oflthe back needles and themovementi. oil-the frontneedlesand back needlesr relative-toseach-, other may. be; obtained intorder to catch the rwarp-yam crossingsrproperly."

' Theknittiirg or W Aswbesti Shown imFigs 10; and: 11, each arm; 31"

pi; each; oscillatablez lever: 36; 3]! drives; through; the;- mediumiofi an; ad ustable; connecting rod v 41;;

..1 warp yarns may be presented to*- any desired saidi adjustable; connecting rod; 41 connected: to-- a slidablea rod? 48 carrying? an; auxiliary warp, yarnr guiding frame 49 to which auxiliary warp yarns wound om the'i warp beams 1*. are: supplied throughia guidingrodiand.guidingzcomb on reed:

'53 This-.comhr is swinga'blei against: theactionof a, torsion: spring.-. Thea auxiliary: warp yarns; needed for: the. knitting: of: the selvedges pass; from the frame, 42 toe the; region: of: the moving; needles Both auxiliary. framesesupply the-outer rows of latch needles or selvedge needles with yarns, at"those plaoeswhere-warp yarn= is not presented "to the needles by "above described warp) yarn crossings of i the main warp yarns; sothat a warp l'z'nit fabric isfermed at theedgesof the-= fabric: If" desired; at: each= side of the machine a weft: thread supplied hy a separate' bobhin arranged at: thefront of the 4 machine may be laid: aiong the 5 selvedge needles by means of a reciprocating:

weft thread guide. l

A plurality of auxiliary irames dfi may beioarranged on a carrier extendingalong the enti're width of i theneedle bed; so-tliat suchl auxiliaryneedle of the needle'bed's The; driverof; the warp dam guide. bars;

Asbest shown in" Fig; 9'; cam drives areassociated with theleft-hand ends of the guide bars l8 and282 Saidcam drives-are substantially of} identical constructi'on; they are merely dis-+ placed; 18 0" inphase relative to; each other. Therefore it is sufficient to"describe=on1y the cam control cf'the guide-bar 28 By'meansof 'an ad justahle" rcd 5|" the left hand end of the guide sa e-s is connected to theupper arm- 52 of a rockable r0d' 52 53 fulcrumed1 at 5'4; The low-er arrn 53- of said-*rod carries a nose 55 =he1d in engagementwith a cam 5=T- hy-meansofa spring" 55 stretched betweerr the MM 53 and the frame offthe'ma'chine: As shown inl igsa 9 and18', said cam- 51 and the corresponding cam associated with the'guide, bar lfl -a refixedly but replaceably mounted on acommon shaft' 58; which is'driven' continuouslyby the main shaft 4 through asuitable mechanism.- The cam disc -5Tis provided withxteeth off spirallyincreased height in suchawmanner; that, besides? the: reciprocating mcvementof .the guide bar 2 8 a; displacement thereof '1 towards the plane, of" a nextneedle is caused; e; gain the mannerof a so -called pilgrim step. At;the end the guide; bar" either: may be oper-' ated in the reversasense or may"be moved back into thestarting position; according tothe ex'e ample illustrated by. the" drawings; the latter;

procedure takes place:

' The adiustment ofi the lengthzof-thestitches- Asflshown ,iniFigs. 2, and; 3, a pair of? drawingofif; rollers. 59;, 59" is,-,r.0t'atably arranged in the. lower portion ofgthe knitting machine near the ground; Fabric knitted by the knitting imple-' merits may he clamped hetween said drawingwfi rollers 59, 53' for eficting the drawing-off of thevfabrice Theiroller- 59., is: continuously driven by the: main. shaft drthrough the medium ofrgears as, shown; in the: drawings. The; length of the stitches may be: adjustedibychanging the drawing-off action of 'the;r0 l1ers:59, 59 on the vfabric; for; example by replacingthezgear; mounted on one ofiithegshaftsibyza larger gear-or -by=;a smaller; gean;- as;the;case;\may:beaand: by; replacing at the,-

4;! ohadiustables lensth:,,.. 'EfiQiQthBl'rfBIldiQf-i same time: theiintermediateigear by; another;

suitable gear. 3) attached to a shaft of the roller drive for adjustment of the roller 59 by hand. Iniorder to prevent a turning of the entire mechanism in advance of the gearing, a claw-coupling operative in one direction only is arranged in the roller drive. The shafts of the rollers .59, 59 are provided with pinions meshing with each other, so that both rollers are driven simultaneously.

The drive of the weft thread carriers As shown in Figs.;4 and 13, a supportor plate 68 carrying a series of weft thread carriers 62 is slidably arranged in the frame of the machine for reciprocating movements longitudinally of the machine in front of the needle beds. Cones 63 mounted on the machine supply a weft thread 64 to the thread tube 6| at the end of each weft thread carrier 62. The weft threads 64 serve for taking away entirely or partially the elasticity in the width of the fabric and at the same time for patterning the front side of the fabric. At the right hand side of the machine, the plate 68 is pivotally connected with one end of a connecting rod 65, the other end of which is pivoted to the upper end of a rockable arm 66, the lower end of which is swingably mounted on the frame of the machine at 61 (see Figs. 2, 15 and 16). When the arm 66-which may be rocked by a mechanism to be described hereinafter-is at a standstill, no thread is laid by the weft thread carriers 62. When a large stroke of the arm 66 is adjusted, a broad or even complete laying of weft thread is obtained, whereas when a small stroke of said arm 66 is adjusted, the weft threads are laid only through short distances. It

will be readily understood that thus patterns with or without different color threads may be made independently of thepattern, that may be obtained by thezigzag knitting by means of th reciprocating warp guide bars.

As shown in Fig. 4, the weft thread carriers 62 are provided with adjustable resilient weft thread guides at their ends remote from the needles. The plate 68 with the weft thread carriers is moved in such a manner that when the needles in the front bed are in their lowest position, the plate is moved to the right through a certain distance, whereby a weft thread 64 is laid behind.

the hooks of the needles by the thread tubes 6|. When now the needles are movedupwardly, said weft thread is lying still loose behind the needles.

When the needles again come into their lowest position, a knitted stitch glides from each needle,

so that the previously laid weft thread 64 comes to lie between the stitches of the front bed and back bed. As soon as this. feature. has taken place, the carrier is moved to the left, whereby again a weft thread is laid behind the hooks of the needles, and so on. The number of weft thread carriers 62 is chosen in such a manner that for a certain stroke of the plate 68 just the.

entire width of the needle beds is covered.

= Adjustment the stroke o the weft thread;

carriers e on the frame of the machine isslidably engaged' There is also. a handwheel (Fig.1

ispivotally connected withthe lower end of a connecting rod l6,'the upper end of which is pivotedqat'll toan automaton or automatic de-v vice 18 rockably mounted on the machine at 19. .The arm 66 connected, in above described manner with the weft thread carriers carries a pin 88 slidably engaged with a ,slot 8| of a disc 82, the varying angular positionof which .is determined by a, mechanism toloe described hereinafter. i

Now, assume thatsaid mechanism determining the angular position of the disc 82 is at a standstill: Upon rotation of the cam H, at first the arm 66, will remain at a standstill as long as the pin 13 is engaged witha concentric portion of the cam path 72. During this standstill of the arm 66, the needles may form loops of the crossing warp yarns. As soon as the pin comes into engagement with a non-concentric portion of the cam path H the slide i4 is moved upwardly by the pin 13, so that the automatic device 18 is tilted in clockwise direction as viewed in Fig. 15. Said tilting of the automaton in turn causes a displacement of the pin 88 of the arm 66 to the left by the wall of the slot 8| of the grooved disc 82, whereby the arm 66 is swung in counter-clockwise direction. Obviously, when during the continuation of the rotation of the cam H the pin It-comes into engagement with the complementary non-concentric portion of the cam path 12, the arm 66 will be swung back in clockwise direction. The slot 8| may be positioned in such a manner, that the arm 66 is not subjected to an .efiective displacement. Theposition of the slot BI. is determined by a wormwheel 83 rigidly connected with the disc 82 and in. mesh with a worm. keyed toa shaft rotatably mounted on the automatic device '18. A pinion 85 in mesh with a gear 86 is keyed to the other end of said shaft. Said gear 86 is mounted on a rotatable shaft carrying also a smaller gear 81. Either thejpinion 88 or the pinion 89 or none of said two pinions of aset of three pinions 88, 89, 98, of which the pinion 98 meshes with the pinion 88 and the pinion 88 meshes with the pinion 89, may be brought automatically into mesh with said gear 81. t For this purpose, said three pinions arerotatably arranged in a holder 92 swingably arranged on the" shaft carrying the pinion 98. Said holder 92 may be swung automatically about its pivot in a manner to be described hereinafter. A spring 93 l5ig. 16) stretched between the holder 92 and the frame of the automatic device 18 tends to swing the holder always in counterclockwise direction against a stop secured to the frame of the automatic device. The holder 92 is provided with a nose 9| in engagement with a cam 98 having a series of interexchangeable cam segments and being keyed to a shaft rotatably arranged on the frame of the automatic device. A gear in mesh with the pinion 98 of the set of pinions 98,- 88, 89 is likewise keyed to said shaft carrying the cam 94, so that said gear 95 participates in the movements of said cam 94. The cam 94 and gear 95 may be intermittently advanced in counter-clockwise direction (as viewed in Fig.16) by means of a ratchet device 96 which is actuated by the shaft 68 through themedium of a crank pin 91 and a connecting rod 98. Said crank pin 91 is adjustably engaged with a slot of a disc secured to the shaft 68. Therefore, the position of the holder advanced ca-H1 94 engaged with the nose 9| of eatdszeta *saia hemer; i obviously, eepeeaitg onaheishaee is n mesh hlth'e gear d wherebyaumn afi a t? remains at slide 1 4 and connectingaecd 15, [the team :94 contrcllin'g' the posnii'on of the'iholder seem-(1 rthe-gear are intermittently advanced by the :ratchet device 96. During each advancmg' istep ofthe i g'ear 95 the pinion '88 is "advanced cbunt'er- ==c1ockwise directiomand ipiniontfi" is advanced clockwise direction. :Depending on the Eposion of "the holder 92 controlled by th rcam 94, 'nsenuently, the' 's'l'ot fll or the :disc E82 engaged 1th the pin 89 0i the arm '56 "is either "advanced clockwise direction, "hr ;in* counter clockwise motion, "or not at an. Said displacement 'or -disp1acement o'f the1sl'ot8l in turnlresults itner in an mcrease erdecreasepr-no change or reversal oftiie rocking movement or the arm :65 causeway the cbfitinuous autbmati'ctilting of th2e automatic device 18. patently, itlui ing such a displacement of the slot 8 5 of the disc 82. the slot Bl may be brought into ap osition wherein the arm 66 remainspractically at "a' standstill in spite of the tiltingof theautomatijc, device] 8;, q Asmening atbothsides-the sam ppeara'ric itis possibl'e to lay the wtt thread in a maereht manner and :to knitit in difierently.

By warping the warp beams in correspondence with-f'the stroke length 'fthe warp guide"bar's d possibly with-thaft o "*tthread-carriers,

var'ious patterns "maybe-tibtained; Asappears from the foregoing no use is made of aJacquard device, of knitting cams, closed eye needles or spring beard needles, but exclusively of latch needles moving simultaneously. a

By replacing the eccentric discs or cams 51 (Figs. 9 and 18) by others the zigzag width may be changed and the warp yarn crossings may be ofiset over one needle or over two or more needles. The plate 60 carrying the weft thread carriers 62 may be arranged at the back of the machine instead of at the front, as far as the thread supply permits this arrangement. If desired, more than one plate provided with weft thread carriers may be used.

it) to each other, each 'rfedlefbed inluding =a "series of "spaced 'recipro'cable -lath eHIes, the needles of onebed being arranged opposite thespace between the needlesof the other bed, ah'eedle fdrive associated with the ne'edles of bothneedle beds ror reciprocating 'the series of needles of one needle 'bed at substantially the s'anie rate biit'ih ilppo'site "direction of movement to the fimvemerit of "the needles of the other needle tea, two war p yarn ranged (in each warp fyarn ui'de ba'r, sa'id warp yarn guiding'fnean's being' spacea'rrom each other at Substantially t'hesame nistanee 81 s the memes or a series of l'ieedles, war yarn'supplyin'g means 'for supplying warp yarns to the yarn gll iiiiifg means of said'warpyarn-guide baraanda'paa tem mechanism {associated with said were yaii' n uide bars for displacing same "relative to the eries 0T 'nedl's at pifitrmiifld ifitefvals111 a predetermined manner so as *to e the retina tion0'iwarp yarneros ti'isby-ina'ns fsaid yarn guiding means and 'to present Said Warp yarn "crossings alternately to "the needles *of one series of needles and to the needles "(if the other series of needles. I I

"2. A Warp khittihg'mahifie, c oi'jrifirisingt 'tWb needle beds arranged at "acut angle relative to each other, each"needle bedihcliidiiiga series of spaced'rec'iprocable latch needles, the needles of one bed'b'e'ing arraiiged'oppds'ite the space "be- 'tween the needles er the other "be'd,-'a needl drive associated with the needles of both needle beds for reciprocatin *tl'i sefie' s "(if needles 61 ene needle-bed at substantially the -S'am'e rate but ?ih il-om each other at substantia ly the same dis- "tance as'the needles" oijaseri'es of needles, warp yarn supplying means for supplying warp yarns to the yarn guiding gi'oolfes 6f said Warp ya-in f'guide bars, and 'a pattern m chanism associated with saw mm yarn gui'de bars rer amending "same relative to the "series of needles at predeterinin'ed intervals in' a predetermined manner so as to'ca'u's'e the romance 6f'w'arp yarn'cro'ssings *by means of saidyarfi guiding grooves and topreser'it 'said 'warp yarn crossings' alternately to the needles-of one series r-neediesana co-the needles Gi the other series -61 eedles. 1

S3; in: a warp knitting machine as claimedin claim 2 the yarn guiding groovesof 'b'dt'h warp yarn guide bars 'tac'in'g the same side of the ma- "chine. i

' =4; a *warp ki'iit'ti-ng mahlne as harm-ea in claim 1, said pattern'mechanism including a first cam drive associated with one of said warp yarn guide bars and a second cam drive associated with the other warp yarn guide bar.

5. In a warp knitting machine as claimed in claim 1, adjustable positioning means interposed between the pattern mechanism and each of said warp yarn guide bars.

6. In combination with a warp knitting machine as claimed in claim 1, at least one auxiliary warp yarn guiding element, auxiliary warp yarn supplying means for supplying auxiliary warp yarn to said auxiliary warp yarn guiding element, said auxiliary warp yarn guiding element being reciprocable parallel to the series of needles, and a drive associated with said auxiliary warp yarn guiding element for reciproeating same. 7

'7. In combination with a warp knitting mail fi f p yarng id n e ement sai l vfll x ll fy warp yarn supplying means for supplying; auxiliary warp yarn to said: auxiliary warp yarn u din me sa d ilia W p n sn ing element being reciprocable parallel to the series ofneedles, and said needle drive being coument for reciprocating same.

- 8. In combination with a warp knitting machine as claimed in claim 1, an auxiliary warp yarn guiding element slidably arranged at each side of .the machine adjacent to the ends of the series of needles, auxiliary warp yarn supplying means for supplying auxiliary warp yarn to said auxiliary warp yarn guiding elements, each of said auxiliary warp yarn guiding elements being reciprocable parallel to the series of needles, and a drive associated with said auxiliary warp yarn guiding elements for reciprocating same.-

; 9. A warp knitting machine, comprising; two needle beds arranged at an acute angle relative to each other, each needle bed including a-series of spaced reciprocable latch needles, the needles .pled with said auxiliary warp'yarn guiding eleof one bed being arranged opposite the space between the needles of the otherbed, a needle drive associated with the needles of both needle beds .for reciprocating the series of needles of one needle bed at substantially the same rate but in opposite direction of movement to the movement of the needles of the other needle bed, two warp yarn guide bars, a series of yarn guiding means arranged on each warp yarn guide bar, said warp yarn guiding means being spaced from each other at substantially the same distance as the needles of a series of needles, warp yarn supplying means for supplying warp yarns to the yarn guiding means of said warp-yarn guide bars, a first pattern mechanism associated with said warp yarn guide bars for displacing samerelative to the series of needles at predetermined intervals in a predetermined manner so as to cause the formation of warp yarn crossings by means of said yarn guiding means and to present said warp yarn crossings alternately to the needles of one series of needles and to the needles of the other series of needles, a support slidably arranged on the machine, a series of weft thread carriers mounted on said support, said support with said weft thread carriers being reciprocable parallel to the series of needles, and a second pattern mechanism associated with said support for controlling movements thereof. 10. In a warp knitting machine as claimed 1 claim 9, said second pattern mechanism including an automatic device adjusting automatically hestroke and direction oi movement or saidsuppo t. 1 .111. A warp knitting machine as claimed in claim 9, wherein said second pattern mechanism comprises: a swingable automatic device, a first power driven cam associated with said automatic device for tilting same at predetermined intervals, in alternate directions, a disc having a slot rotatably mounted on said automatic device, a

9 swingable arm connected to said support, a pin arranged on said arm and slidably engaged with the slot of said disc, at power driven ratchet drive .mounted on said automatic. device, a second cam and a firstgear rigidly connected with eachother l and jointly driven by, said ratchet drive, a holder swingably mounted on said automatic device, a set of pinions comprising a first, pinion meshing with a secondpinionwhich in turn meshes with a third pinion rotatably arranged in said holder, .said first pinion meshing with said first gear, a second gear. rotatably mounted on saidautomatic .device and coupled with said disc-having .said slot for adjusting same by, rotation, said second cam cooperating with said holder for adjusting same in alternative positions wherein either said second. pinion or said third pinion or no pinion is in mesh with said second gear whereby said disc with said slot may be rotated in one or the other direction or may be held at a standstill for 0 control of the stroke and direction of movement of said arm connected with saidsupport.

LAMBERTUS TE STRAKE.

7 REFERENCES 'cI TEn The following references are of record in the file ofthis'ipatent: s 1

f 7 UNITED STATES PATENTS Number H Name I Date 40 9,718 Mee May 10, 1853 9,719 Mee' May 10, 1853 H 459,866. 7 Clewley 1 Sept. 22, 1891 583,04 0 Eranck et al May 25, 1897 l 1,218, 212 Saupe Mar. 6, 1917 i5 1,218,213 Saupe Mar. 6, 1917 159 ,579 Rupe Mar. 17, 1931 71,972,669 Van Arsdale et a1. Sept. 4, 1934 2,029,880 7 Lindley Feb. 4, 1936 2,427,007 Lambach Sept. 9, 1947 2,428,030 Lambach Sept. 30, 1947 FOREIGN PATENTS N nmber I Country g i 7 Date 2,467 Great Britain of 1856

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