US1568953A - Straight-frame knitting machine - Google Patents

Description

Jan. 5 1926.

STRAIGHT FRAME KNITTING MACHINE L. HIRSCH ET AL Filed April 5, 1924 l.; 'I' Uu um um@ w Il um o 6 Sheets-Sheet l All /NI/ENTRS /Zouz's Hirsch @"Ljarzs Zahn Jan. 5 1926.

.L.HIRSCH ET AL STRAIGHT lFRAME KNITTING MACHINE Filed April 5 6 Sheets-Shet 2 n JI "JIM .NMF

Jan. b 1926.

L. HIRSCH ET AL I STRAIGHT FRAME KNITTING MACHINE Filed April 5. 1924 e sheets-sheet s INVENTOHS Lauzs Hi nach WHO??? Zahn 00000000002; o| nu nu.

L. HIRSCH ET AL STRAIGHT FRAME KNITTING MACHINE Jan. 5 1926.

Filed April 5. 1924 G'Sheets-Sheet 4 zezf' ATTORNEYS Jan. 5 1926. 1,568,953

L. HIRSCH ET AL I STRAIGHT FRAME KNITTING MACHINE Filed April 5, 1924 6 Sheets-Sheet 5 Jan. 5 1926. A 1,568,953

l.. HlRscH ET Al.

STRAIGHT FRAME KNITTING MACHINE Filed Aprl 5, 1924 @Sheetshegg 5 d La is Hay/35W l' M* Hans Zahn ZVLez'T' A TTOR/VEVS Patented Jan. 5, 1926.

UNITED STATES PATENT oFFiclez.v

LOUIS HIBSUH, OFWEEHAWXEN, AND HANS ZAHN, OF UNION, NEW m.

v STRAIGHT-FRAME KNITTING MACHINE.

' Application med Apri! 5, 1924. Serial Nm 704,898.

To all whom it may concern:

Be it known that we, Louis Hmson, a citizen of the United States of America, residing in Weehawken, county of Hudson, and State of New Jersey and HANS ZAHN, a citizen of the United States of America, residing in the town of Union, county of Hudson, and State of New Jersey, have invented certain new and useful Improvel0 ments in Straight-Framel Knitting Machines, of which the following is a specification.

Our invent1on relates to straight frame knitting4 machines having traversing elements to control the knitting and more particularly to the mechanism for giving such traversing movement. By straight frame knitting machines we refer to all weft or warp knitting machines in which the knitting elements are arranged in straight lines. l Our invention can o crate the guide bars on warp knitting mac ines, lace bar or narrowing attachments for full fashioned hosiery machines, thread carriers on flat knit' ting machines, or to any other element adapted to move along the line of knitting elements, whether it operates the yarns, the needles or pressing elements. Our invention is especially valuable where the movements of the traversing element are irregular as in "0 the production of designs in the fabric. -Among the advantages of our construction are its perfect adaptability to an unlimited variety and number of movements and its simplicity, accuracy and speed of manipulation and operation.

As an example of a knitting machine to which the invention can be advanta eously applied, we have shown and descrlbed it as embodied in a double rib warp knitting or Raschel machine, but it will be 'understood, of course, that we do not limit ourselves to that application of the invention.

In the drawings- Fig. 1 is an end elevation of a double rib warp knittingr machine;

Fig. 2 is a side elevation of part of a double rib warp knitting machine in connection with a schematic diagram of our guide bar operating mechanism;

Fig. 3 is a plan view of one `unit 0f the pattern selecting means;

Fig. 4 is a side elevation of the pattern selecting means and one unit of the motion translating means;

Fig. 5 is a detail of the adjusting' claws shown in Fig. 4; Fig. 6 is a side elevation of the mecha-`v nism operating the motion-translating lever; Figs. 7 and 8 are lan views of part of the motion-translating ever and its associated. elements at different points in their movements; l i Fi 9 is a vertical section on line ofF1g.8; Fig. 10 is a side elevation of the mechanism for transmitting movement to the guide bar in the desired manner;l Y

Fig. 11 is an elevation at right angles to- Fig. 10 showing the transmission of the movement for the guide bar from the mechamsm of Fig. 10 to the racking bar;

Fig. 12 is a plan view of parts of therjack-A ing bar and guide; bar;.wh1le.

Figs. 13 and 14 are detail views 0f.. the connection between the rackingv barfandthe guide bar.

The main parts of a double ribfwarp knit-. ting machine such as wehave chosen .for the purpose of illustrating ourinvention are; shown in Figs. 1 and 2. There are twov 80 straight banks of latch needles 40 'each mounted on a needle bar41 in any ordinaryl manner. The needle bars are .'adaptedfto slide up and down in needle beds which.. are rigidly fastened to the mainfralne 25, of the machine in'suchf apositioxi'fthat'tlieneedles in the two banks towards" each other at their upper'ends (F1g.',11) butleave suflicient space to let the .fabric pass cdown rbetween them. The 'twofbanks f needles 00 are raised and lowered 'inftheu'sal' 'manner by needle cams 43 acting through cam arms 44 pivoted at 45 which reeiprcate lifter, rods 46 on which the needleffbarsli faite' mounted. One bank 4is s hovvfn'iii raisedprisi- 95 tion in Fig. 2.' These needle earns'arebnthe main shaft 30 of the knittingmacliine.

We haveshown a machinehav'in four guide bars O-one carrying'fthe basic fab: ric yarns and the other threebars the various pattern yarns-but thenumber and a1'-A rangement can be variedv as desired'. The yarns 7 0 are fed to the needles through the usual individual guides 51 of ,the guide bars which pass between the needles as the ide bars are rocked back and forth'. Whi e the guides are operated independently in their ongitudinal movements,fthey are all hung on a single cradle 60 and passed back and forth between the needles as a unit. Each guide bar is suspended by two or more hangers 55 through whose lower end a horizontal pin 56 located on top of the guide bar slides freely, thus enabling the guide bar to slide longitudinally with relation to the cradle. The suspension is made rigid by the brackets 58 fastened on the ends of the guide bar and slidably sus ended on the cradle by rods 59. The crad e is rocked by a slotted arm 61 on one end of the cradle and a vertical connecting rod 62 adjustably fastened to the outer end of the slotted arm. The lower end of this connecting rod is forked and straddles the main shaft 30.

Mounted on the connecting rod is a roller being so timed with relation to the needle bars that each needle bar descends just after the individual thread guides pass between the needles to the same side of the machine as that needle bar. The yarns are fed to the guide bars from the usual warp beams 71 mounted in racks 7 2.

In warp knitting the loops are formed by the guide bars lapping the yarns around the needles, this lapping being done by combinations of the rocking movement already described and the longitudinal or traversing movement to which our invention relates. One of the oldest and best means heretofore known for creating the traversing movement was the famous Dawson or cut wheel, whose edge was cut at varying distances from the center. This irregular edge was presented to the end of a transfer bar connected to the end' of a single guide bar, the transfer bar being held against the edge of the Dawson wheel by a tension spring. As the Dawson 4wheel was racked around, the different -height steps on the edge of the wheel caused the guide ar to make traversing movements.

y The change in height of two successive steps was very restricted owing partly to the fact that the spring-pressed transfer bar had to follow the contour accurately and abruptly although the surfaces causing the movements were ver steep. For this reason the guide bar-coul move over only a few needles Vat a time. Another disadvantage was that the tension of the spring varied with the height of the steps and was never a satisfactory method of holdingl the transfer bar against the wheel.

'One lof the greatest troubles with Dawson wheels was the 'necessity for cutting the edge of the wheel with great accuracy in order needles. This cutting was a laborious joh and one vwhich had to be done over again when 1,5cs,95s

the wheel became slightly worn o: otherwise not true to gauge, and again when a change of pattern was desired each guide bar carrying` pattern threads had to have a new wheel cut for it.

Sometimes a circular disc was fitted on its edge with removable studs or plates of different height, as a substitute for the cut wheel. But the studs also had to be accurate and the guide har could not he moved over many needles at one step, with the rcsult that both the Dawson wheel and the stud wheel were limited as to both the length and variety of pattern they could produce.

In an effort to avoid these disadvantages recourse has been had to pattern chainsl composed of links of different heights the links sometimes being connected with link wires and presented to the transfer bar on a drum. However, the links could not be more than a certain height and could not vary from the previous height more than a certain amount for the same reason that the steps on the Dawson wheel could not be greatly different in height. Furthermore the fact that the working surfaces of the links come into action when the chain is on a drum necessitates their being longer than their bases and that limits the possible height to which links can be built and still be put in a chain. It should also be noted that the chain cannot be handled if it is too long or too heavy.

In distinction from all prior constructions.

we have invented a mechanism which operates the guide bar positively in all its longitudinal movements and yet at the same time is flexible in operation and can produce an unlimited variety of designs. lVe provide permanent operating mechanism originating and controlling all longitudinal movements of the guide bar, and absolut/ely independent pattern means indicating to the operating mechanism which movement it is to give to the guide bar. The operating mechanism can produce only movements of a definite series based on a predetermined linear unit,-such as the distance required to lay the thread in front of one needlewhile the pat-tern means merely releases the movements in their desired order. These movements are unidirectional, are each independent of its predecessor, and may bc in either direction as selected by the pattern means. y

Vlie have so devised our mechanism that the movements are applied to the guide bar cumulatively rather than measuring them all from a zero position of the guide bar. The successive movements are applied to the traversing bar at points in its traversing varied according to the position of the bar at the time each movement is to start. By this means the guide bar can be gradually moved through a distance many times the maximum single movement thus permitoperating mechanism the whole basis of theI pattern mechanism is changed, the selections of the pattern indicating only the direction and length of movement measured from the last operative sition of the yarns and -the bar. The ma ing of new patterns is much sinplied and cheapened by this a1- teration without in any way affecting the accuracy of the machine, for it is the operating mechanism and not the selecting means which gives the movements and adjusts their accuracy.

For selecting means we have shown a jacquard mechanism, but its function and its relation to the knitting are entirely novel. Heretofore the individual jacquard pins and perforations have always controlled specilic knitting elements or positions but we continually change their operative relation to the knitting and let them designate merely the length and directionl of a movement. The point of application of the movement is not designated by the paper pattern at all, but is determined by the cumulative sum of the previous movements of the guide bar. In this way the pattern need not be punched from any laborious calculation based on a zero position, but can be transcribed into pei-forations which actually correspond to the yarn ,movements The direction of movement is similarly governed as will be explained in detail later. The employment of a jacquard mechanism ordinarily slows down the speed of a machine, but when a jacquard is employed in the new and novel way described above, we find it is possible to put devices between the jacquard and the knitting machine by which the jacquard can rearrange its pins according to the new selection while the knitting machine is still operating under the old selectiona sort of advance selection. This synchronized independence is of considerable practical importance and is another pointof radical departure from the prior art.

Our automatic traversing mechanism is illustrated schematically in Fi 2 in association` with sullicient of the ntting ma.- chine shown in Fig. 1 to make its attachment clear. It should be noted that no attempt has been made in this figure to show the parts of our automatic mechanism in the the movement is to be applied.

positions or chine.

To simpli the description we have arbitrarily divided the apparatus into three groups as follows 4'l A. The movement-selecting means (Figs. 2, 3, 4 and 5); n B. '..lhe means translating that selection` into linear movement (Figs. 2, 4, 6, 7,8

and and C. e means transmitting kthat movement the guide bar in the desired manner (Figs. 2, 10, 11, 12, 13 and 14).

These means are operated entirely froma main drive shaft geared to the main shaft 30 of the knitting machine proper, the positioning claws by means of cam 156, the translating, lever byv cam 206, and thetransmittingemeans by cam 306.

A. Tl'ie se ctng mana-This part of our, mechanism includes the selecting device proper, for which we prefer to use a form of jacquard-and the 'device enablingthe jacquard to make an advance selection while the remainder of the apparatus is carryingv out the previous selection. 1

The jacquard has the usual, perforated paper pattern advanced intermittently over a drum 111 by any suitable means driven from the main shaft 105, the drum being moved against a row of jacquard pins Aor needles 120 after each advance of the pattern and the pins to be selected asslng through holes in 'the pattern an not being pushed back all in a manner'similar to that described in the R. Zahn Patent No. 1,049,556, dated January 7, '1913. The pattern is a strip of heavy paper and is kept in register by'any of the customary registry pins 112. It carries the selections for all the guide bars in the whole knitting machine--in this particular case there are' fourand it has one perforation for each length of movement of each-.bar and one perforation for each guide bar to control the direction in which the movement is to be made. In Fig. 3 `we have--shovvna'll the paper pattern but the acquz'ird pinsi. for on y one uide bar, name y, the-one ap ar.- ing on t e extreme left in Fig.-1 o fthe drawings. There is -a "second" set of pins 120 (not shown) interspersedwith the -.set shown, and two more'se'ts (notsho'wn)foppo. site the other half of the paper attemp- Throughout the description We shal follow only the unit for the guide bar appearing on the extreme left in Fig. 1 of the-draw ings. The perforation positions aredivided into four groups 113., 113b, 113 113.1; of nine each, (one grou for each bar ,A to designate the len h o movement, an two perforation positions 114., 114b, 114e, 114.1, at each edge of the attern, (one for each bar) to determine the direction in which l planes as they exist in the ma A new pa er pattern can be made from the sketch w ich is customarily made of the design, by simply counting the number of needles the particular thread is to move from its position at the end of the previous loop and perforating the pattern at the correspondingly numbered position of the group 113b. If the movement is to take place in one direction then no perforation is needed in the direction position l14b, but if'it is desired to have the bar move in the opposite direction a perforation is necessary. The movements of all the guide bais are controlled in the same way.

When using chains with links it required about sixty-six yards of heavy links to produce 260 courses of knitting on a four guide bar machine, but with our device the 260 courses can beprodiiced with 2% yards of perforated paper. Furthermore'the paper pattern can be of any length desired. This striking illustration of the value of our construction is further emphasized by the fact that the paper pattern can be laid away till required again, whereas the pattern chain cannot be saved without tying up 'hundreds of dollars worth of equipment.

Each jacquard pin 120 is secured to a bar 121 sliding horizontally in a jaw on the main frame 100 to which bar can be attached any desired jacquard safety devices. A wire 122 adapted to move with the bar 121 connects it pivotally to a horizontal selectingbar 140 mounted at its rear end in a jaw on the main frame 100. This rea-r end of the selecting bar is curved on its edges in a manner which enables the front end of the bar to ti up a little if necessary. For each horizonta selecting bar 140 there is 'anfL slide whose vertical arm 160 cornes upfpastthe selecting bar and whose horizontal arm 165 is 'unitary therewith. Projeeting laterally Yfrom vertical arm 160 of each L slide are two low lugs 161 between which the associated selecting bar slides, the selecting barlthus lifting the L slide whenever the selecting bar itself is lifted.

lThe advance selection is made possible by the mechanism shown on an enlarged scale in'-Fig. 5. .Projecting from the free end of."each selecting. bar^140 at the lower edge is a-'toe 1415and'just back of this toe there is 'a deep notch or instep 142 in the lower edge -of the bar.' Situated just beyond the freeends .of these bars is a shaft 149 on which are-.pivoted two `adjusting claws 150 andi155 which: lie respectively below and above the row of selecting bars 140. The claw 150- when swung. up is adapted to enter thefnotches 142 .of such selecting bars as are pushed back by the paper'pattern and to contact. with the under edge-of rear part of the= toes of suclrbarsas are connected to pins which enter'the paper pattern. The ,effect of'this claw 150 on the bars selected by the paper pattern is to raise the free end of the bar to the dotted position shown in Fig. 5. The upper claw 155 lies above the row of selecting bars 140 and when swung down is ada ted to contact on the upper edge of such liars as are pushed back by the paper pattern and hold'them in or force them into the down position, but it cannot reach the upper edge when the corresponding pin is in the paper pattern and it comes down past the end and on top of the toe of these latter bars as can be seen in Fig. 5. Thus it will be seen that when these adjusting claws 150 and 155 are raised and lowered respectively they clamp the unselected bars in their down position and raise the selected bars to their up position. As soon as these claws have clamped together a locking bar 157 is pushed into notches 158 in the vertical arms 160 of the L slides by any suitable mechanism. If desired this locking bar 157 can be operated from the main drive shaft 105 by means of the grooved cam 156, a pivoted lever 170, a link 171 and a bell crank lever 172 (Fig. 2). These notches are so located and shaped that the locking bar holds all the L slides in the up and down positions given them by the adjusting claws 150 and 155. The locking bar holds the bars in these positions as long as desired irrespective of any other movements. lVhen the bar 157 has locked the vertical arms 160 the adjusting claws at once swing apart again and the selecting bars 140 are free to be moved by the jacquard. The jacquard pins are then returned toward the withdrawn drum 111 to the position awaiting selection as set forth for example, in the aforementioned Zahn Patent 1,049,556, and a new selection made. Selecting bars are now to be found in three different ositions, the bars which were involve in neither the advance selection nor the previous one ai'e in the solid line position of Figs. 4 and 5, the bars involved in the previous selection which though still held tipped up by the locking bar 157 are now pushed out till the instep notch 142 is opposite the raising claw 150 and the top edge opposite the lowering claw 155, and the newly selected bars waiting to be raised (dotted position Fig. 4). When the rest of the apparatus has completed its operation under the old selection the locking bar is withdrawn and the adjusting claws clamped together. This clamping tips up the newly selected bars and their associated L slides and insures that the selecting bars of the previous selection are downin horizontal position. The locking bar is then pushed in again and the cycle repeated. The clamping jaws are operated by rods 151 and 152, and the pivoted lever 153 actuated by the groove cam 156 on the drive shaft 105.

B. The translating melma-It is in this iapo poespas part ofthe apparatus that the power to operate the guide bar is introduced, the movements originating with cam 206cm the drive shaft 105. The dia vammatic re resentation of these means 1n Fig. 2 d1 ers from the detail views of Figs. 6, 7 8 and 9 in that in the actual machine the cam 206 lies in a different plane from the translating lever 200 while in Fig. 2 the elements are shown in the same plane to simplify the connection. This cam is an internal groove cam and operates a bell crank lever 210 connected to a translating lever 200 by a link 211. This translatin lever may take the form of an open four-si ed frame pivoted at the center of the to and bottom and linked to the bell crank ever at one side. We have shown only the top arm of the translatin lever as the bottom arm is `an exact dupicate (Figs. 7 and 8). The translating lever is pivoted at its middle points 201 and the lever is swung through a fixed arc by the link 211. Each half of each arm of the lever 200 is devoted to the translation of movement for a single guide bar, so we shall confine our attention to one half of the upper arm. The arm is grooved lengthwise on its lower side and a keeper 202 having nine holes 203 therein slides in this groove (Fig. 4). These holes are spaced to be over the nine horizontal arms 165 of the L slides belonging to the len h of movement pins for this particular ui e bar. There is a couplin pin 220 slida ly mounted on the horizonta arm of each L slide and the nine f piis are set in a -row in a slide frame 250.

, respective hole in the keeper 202, and each In this position is adapted to engage the keeper when its L slide is lifted by the adjustingl claw 150. ((Fig. 7) the translating lever can be consi ered as at the beginning of its stroke and the slide frame as at zero.

It will now be apparent that when a coupling pin 220 is lifted into operative position by the selecting means the uniform angular reciprocation of the translating lever translated into a linear reciprocation of the slide frame whose length depends on the distance between the pivot center 201 of the translating lever and the particular coupling pin in use. yFig. 8 shows the translating lever at the end of its stroke, one slide frame having been moved and the other being still at zero because no coupling pin engaged the lever. When the selecting means changes the coupling pin after each reciprocation the linear reciprocations are varied in length.

C'. Transmttz'ng mama-We new come to the means for applying the movements of the slide frame 250 to the guide bar. The

most-important elements in this transmisarms of the forked end of the slide frame in sucha manner that while they cannot move lengthwise with respect to the slideV frame they can move into and out of engagement with the pinion. The meshing of the racks with the pinion is caused through'a yoke 340 which controls the engaging movementsbut permits the racks to move longitudinally (Figs. 10 and 11). It will be apparent that if one of the racks is meshed with the pinion just before the translating lever begins its?- Vstroke and then is disengaged as the lever begins its return stroke, that the parts have in effect been uncoupled, but in a different relative position and coupled up again in that new relation. The len previousone rather than starting from the same zero, thus produclng tremendous flexibility of movement of the yarns. Since the gth of the nexti Astroke of the guide bar is thus added to the racks 350 are on opposite sides of the pinion*- and the racks are always moving in the same direction when one is meshed with the pin- 1on, it follows that the pinion can be turned in one direction or the other according to which rack is meshed with the pinion. Y Ouri apparatus therefore is positive 'actin in both directions and canmove in either direction any desired distance. Instead of building warp knitting machines to it the traversing means they can now be builtv to fit the amount of traversing needed( for the patterns.

The mechanism for engaging and `disen gaging the racks and thepinion are shown in Fig. 10. It is driven from a cam 306 on the main shaft 105 and controlled b a direction wire 167 connectedby a bel crank lever 166 to the particular vertical arm 160 which controls direction for that-guide bar. The central elements in this part of the mechanism are a double jaw 320and an associated rocking sleeve 330. This double jaw member 320 has two jaws 321 facing each other at a sufficient distance-iapart-to enable; one jaw or the other to enga ey one off-the" pins 331, 332, on the rocking s eeve, but not close enough to allow both4 jaws' to' grip pins at the same time.

The double jaw member is pivoted at 323-` on one end of a bell crank lever 316 which fin turn is pivoted on the main frame 100'. The direction wire 167 is connected to the double jaw member 'near' the jaws 321 at such an vangle that'when the pattern'does-lnot-liave.

lengages teet a perforation in the direction position one jaw engages pin 331,I but -if there 1s -a perforationthe wire 167 turns the jaw member on pivot center 323 till the other jaw engages. pin 332. .The operating cam 306 imparts a linear -reeiprocation to the double jaw member by means of a bell crank lever 310 pivoted on the frame, a rod 312 and the bell crank lever 316.' The osition of the double jaw member when pu led b the cam 306 is partly indicated by dotte lines in "Fig, 10, and it will be seen that the reciprocation is directly away from and towards the rockin sleeve 330. It will be observed that the pins 331 and 332 are so located on the sleeve with relation to the reciprocatory movements of the double jaw member, that if one pin is engaged b that member the sleeve will rock 1n one irection and if the other pin is engaged in the opposite direction.

The rocking sleeve is linked to the yoke 340 by a rod 333, a bell crank lever 334 pivoted on the main frame and a lost motion link 335 between the bell crank lever and the yoke. A moments examination of this 'mechanism will show that when the double jaw member is in the up position (shown m solid lines in Fig. 10) neither of the racks 350 will be in engagement with the pinion 560, no matter which jaw 321 is in engagement with its pin, but when the double jaw is pulled down to the dotted position one or other of the racks will mesh with the pinion.

The inion 360 is coupled directly to thel ide ar by any suitable means such as own in Figs. 11 to 14. The shaft 361 on which the mion 360 is mounted also has on it a bevellgear 363 transmitting the movements by bevel gear 364 to a vertical shaft 365 and a pinion 366. This latter pinion 371 on a racking bar 370 which takes the place of the transfer bar heretofore used. The racking bar is fastened to the guide bar by means of a T-headed bolt 372 on the end of the guide bar. This bolt slides in a curved slot 373 in a plate 374 fastened on the end of the racking bar at right angles to the guide bar. The slot is undercut leaving shoulders 375 which hold the T-headed bolt from coming out, thus coupling the guide bar positively to the operating mechanism and at the same time ermitting the cradle to rock the guide bar back and forth.

It will be observed that the movements of the guide bar are cont-rolled by parts which are not liable to become inaccurate through wear, but as a positive check a ainst all such inaccuracies we have provide accurate and adjustable means for correcting the inaccuracies of each movement. This consists of a pointed wedge or tooth 362 adapted to enage the pinion 360 after each movement. he setting tooth 362 can be actuated by any suitable means. In Fig. 10 we have shown means operated from the main drive shaft 105 comprising a grooved cam 301 on that shaft controlling a linka e consisting of a bell crank lever 302, a ro 303, a bell crank lever 304, and a lost motion link 305 connected to the tooth. The pinion is so made that the space between two of its teeth should be opposite the tooth 362 after each movement. If for any reason it is not the pointed wedge or tooth will bring it into register and thus automatically bring the gulde bar into register. The tooth 362 also serves as a lock to hold the guide bar in (position while the racks 350 are disengage What we claim is:

l. In a knitting machine having a traversing bar to control the knitting, independent selecting means, in combination with operating mechanism connected between the bar and said independent means and adapted to give the bar varied lengths of movement positively in either longitudinal direction; said independent means selecting all the movements of the operating mechanism.

2. In a knitting machine having a traversing bar to control the knitting, independent means selecting the longitudinal movements to be given the bar in combination with operating mechanism located between the bar and said selecting means and positively connected to the bar; said operating mechanism being adapted to give the bar varied lengths of movement in either longitudinal direction by the same positive connection.

3. In a knitting machine, a traversing bar to control the knitting and operating mechanism giving the bar all its movements positively, in combination with independent pattern means selecting the movements of the operatin mechanism, each selection being indepen ent of its predecessor both in length and direction.

4. In a knitting machine, a traversing bar to control the knitting, and operatin mechanism therefor in combination wit independent means selecting varied lengths of movement in either direction for said operating mechanism, said operating mechanism giving the whole of each of the selected movements to the bar cumulatively.

5. In a knitting machine, a traversing bar to control the knitting, and independent pattern means selecting the length of each movement independently of the position of the bar, in combination with operating mechanism applying the whole of each of the selected successive movements to the traversing bar at varied points in its traversing.

6. In a knitting machine, a traversing bar to control the knittin independent means selecting the longitudinal movements to be given said bar in combination with operating mechanism located between said bar and said selecting means and positively conmaltese nected to said bar, said operating mechanism bein'g'adapted to lgive the bar varied lengths cumulative sum'of the bars previous move- 5 ments.

7. In a knittin machine, a traversing bar to control the kmtting, and perforated pattern means designating a length and a directionl for each movement of said bar indendently of the position of thebar, in comination with positive automatic mechanism givin the whole of each selected movement to said bar in the direction selected by the attern means, but applyin the selectedengt-h at ints varied accor ing to the position of t e bar at the time each movement is to start.

8. In a knittin machine, atraversing bar to control the knitting, in combination with operating mechanism adapted to give movements of varied length to said bar and including engaging mechanism adapted to hold said operating mechanism engaged with said bar during one movement of the operating mechanism, to hold the parts disengaged during the next movement of the operating mechanism, and to then engage the parts in their new relative position.

9. In a knitting machine, a traversing bar to control the knitting, and operating mechanism therefor adaptedpto uncouple itself from the bar after a movement of the 4two elements coupled together, move to a relatively new position and couple up to said bar again in combination with loc ing means adapted to adjust and hold said bar in the exact position desired upon completion of each movement of said two elements coupled together, and to release said bar when said two elements are coupled together anew.

10. In a warp knitting machine having a plurality of guide bars, mechanism for each of said guide bars adapted to positively actuate it longitudinally, in combination with perforated pattern means for said mechanisms in which the perforations designate merely the direction of each successive movement and the number of needles in that direction over which that guide bar is to move, the point of application of the movements being adapted to be varied, substantially as described.

11. In a warp knitting machine having guide bars, operating mechanism adapted to move each of said guide bars ingividually in either longitudinal direction an at all times positively, in combination with a jacquard mechanism cooperating with said operating mechanism in which the jacquard needles transmit to the operating mechanism merely the direction of movement and the number of needles over which the guide bar is to move, the points of application ofthe-movebartocontrol the knitting,--.and-operting mechanism giving the bar. allI its :iongitudi-f:

nal movements positively -andincluding .an element having'uniform reciprocation, in combination with a seriesaof 'means adapted to engage said elementrat vared=p0ints to produce varied reciprocation'and means-- transmitting to said traversin bar the movements given to said series o means by said element.

13. In a knitting machine a traversing bar to control the knitting and operating mechanism giving the bar all its longitudinal movements positively and having an element adapted to have a variable reciprocation for each unidirectional movement of the traversing bar, in combination with independent pattern means selecting the reciprocations of said element in said operating mechanism.

14. 1n a knitting machine, a traversing bar to control the knitting, a pivoted lever, and means adapted to give said lever uniform reciprocation, in combination with a series of coupling means adapted to engage said leverat varied distances from the pivoting point, and means transmitting to said traversing bar the movements given to said series of coupling means by said lever.

15. In a knitting machine, a traversing bar to control the knitting, a pivoted lever, means adapted to give said lever uniform reciprocation, a series of coupling pins adapted to engage said lever at varied distances from the pivoting point, :and means transmitting to said traversing bar. the movement given said series of coupling pins by said lever. in combination with perforated pattern means adapted'to` control said pins.

16. In a. knitting machine, alitraversing ,i

bar to control the knitting, operating means therefor having uniform angular reciprocation, translating means adapted .toichange said uniform reciprocation to varied linear reciprocation, and transmission means adapted to either drive said traversing bar in one direction or in the other from said varied reciprocation, or not to transmit said reciprocation at all, in combination with pattern means adapted to choose the'variatlons to be caused by the translating means and the operation of the transmitting means.

17. In a knitting machine, a traversing bar to control the knitting, a pivoted lever, meansA adapted to give said lever uniform reciprocation, a series of coilpling pins adapted to engage said lever atvaried distances from the pivoting int, "af-longitudinally movable slide frame 1n whichsald pins are mounted, and a pinion positively oonnected to said traversing bar, "ini Acombination with a yoke fastened to said slide frame and having racks on its opposite inner faces adapted to separatel en age said pinion or be both disengaged t ere rom, and perforat- 5 ed pattern means adapted to control said pins and said rack.

18.- In a knitting machine, a traversing bar, and operating` means therefor, in combination with jacquard -means having pins,

10 said operating means being adapted to operate under a selection from the jacquard means whlle the pins of said jacquard means are rearranged according to the new selection.

In testimony whereof we have signed our 15 names to this specification.

LoUIs HIRscH. HANS ZAHN.

Images