US2593041A - Machine for the manufacture of run-resistant knitted fabric - Google Patents

Description

April 15, 1952 J. E. LYNAM ET AL 2,593,041

MACHINE FOR THE: MANUFACTURE oF RUN-RESISTANT KNITTED FABRIC Filed Aug. 15, `1942s 1e shee-sneer 1 J. E. LYNAM ET AL 2,593,041 MACHINE FOR THE MANUFACTURE OF` RUN-RESISTANT KNITTED FABRIC April l5, 1952 16 Sheets-Sheet 2 Filed Aug. 13'., 1948 April l5, 1952 J. E. I YNAM ET AL 2,593,041

MACHINE FOR THE MANUFACTURE 0F RUN`RESISTANT KNITTED FABRIC Filed Aug. 13, 1948 16 Sheets-'Sheet 3 A l Inventeur d nud .9 owmhm gouwoww /Lduld April 15, 1952 J. E. LYNAM ET AL 2,593,041 MACHINE FOR THE MANUFACTURE OF RUN-RESISTANT KNITTED FABRIC Filed Aug. 15, 194s 16 sheets-sheer 4 Invenorf April 15, 1952 J. E. I YNAM ETAL 2,593,041

MACHINE FOR THE MANUFACTURE oF RUN-RESISTANT KNITTED FABRIC Filed Aug. 13, 1948 16 Sheets-Sheet 5 i u Inve om Qimmy MW April 15, 1952 J. E. LYNAM ET AL MACHINE FOR THE MANUFACTURE OF RUN-RESISTANT KNITTED FABRIC Filed Aug. 15, 1948` 16 Sheets-Sheet 6 www] April 15, 1952 J. E. I YNAM ET AL MACHINE FOR THE MANUFACTURE OF RUN-RESISTANT` KNITTED FABRIC 16 Sheets-Sheet 7 Filed Aug. 13, 1948 April l5, 1952 J. E. LYNAM r-:T AL 2,593,041

MACHINE FOR THE MANUFACTURE OF RUN-RESISTANT KNITTED FABRIC Filed Aug. l5, 1948 16 Sheets-Sheet 8 April 15, 1952 J. E. LYNAM ET AL MACHINE FOR THE MANUFACTURE OF RUN-RESISTANT KNITTED FABRIC 16 Sheets-Sheet 9 Filed Aug.. 13, 1948 April 15, 1952 J. E. I YNAM ET AL 2,593,041

MACHINE FOR THE MANUFACTURE OF RUN-RESISTANT KNITTED FABRIC Filed Aug. 13, 1948 16 Sheets-Sheet 10 April 15, 1952 J. E. LYNAM i-:T AL 2,593,041

` MACHINE FOR THE MANUFACTURE oF RUN-RESISTANT KNITTED FABRIC Filed Aug.. 13, 1948 16 Sheets-Sheet l1 A' Inventor i @ma Wqum APH] 15, l952 J. E. I YNAM ET AL 2,593,041

I v MACHINE FOR THE MANUFACTURE oF RUN-RESISTANT KNITTED FABRIC Filed Aug. 15, 1948 16 Sheets-Sheet 12 Inventor;

Mig/wg 4 am my a@ /o-dme APH] 15, 1952 J. E. LYNAM ET AL 2,593,041

MACHINE FOR THE MANUFACTURE OF RUN-RESISTANT KNITTED FABRIC v Filed Aug. 15. 1948 1e sheets-sheet 15 April 15, 1952 J. E. LYNAM ET AL MACHINE FOR THE MANUFACTURE oF RUN-RESISTANT KNITTED FABRIC 16 Sheets-Sheet 14 F'iled'Aug. 15, 1948 e lnvntor m By April l5, 1952 Filed Aug. 15, 1948 J. E. LYNAM ET AL MACHINE FOR THE ,MANUFACTURE OF RUN-RESISTANT KNITTED FABRIC 16 Sheets-Sheet l5 y fduwot April 15, 1952 J. E. I YNAM ET AL 2,593,041

MACHINE FOR THE UFACTURE oF RUN-RESISTANT K TED FABRIC l Filed Aug. 13, 1948 16 Sheets-Sheet 16 O In @o 232 232`-OO 3o F/GZB.

lllllllllll Patented Apr. 15, 1952 l i' n UNITED oFF-Ien time MCHINE FOR T-HE MANUFACTURE 0F 'RUNRESISTANTT KNI'IITED; FABRIC John' Edward Lynam, Mappeljly, and Leonard Brown," Nottin am, England; assignors t0 William CttonjLimited;fnnughborongh; Eng:

enpiiaaonaugustla, 19st2 serial-No- 44,184 new ein Annan.; s claims.. (ci. ejem-M82) t, li'fteg the, headsN 0f the lower needles with the eyes of theupperneedles.A l The above and other features of the invention In the manufacture of runresistan fabric by the method formngfthe" Br? ish Batters Patent' 1101527.23@ and U States Patent No. 2,312,903 two'sets f needles lare employed, those of one Sei? b cated immediately toA therla'rjofy i. ,n beard side' not but slignuyiowerfthan the@l of' thefoth'er. At one phase in the knf tiri heads "areburied in eyes or 'grooves in the stem of' thempper needles with the result "tlat'fthe, lower needles may then be caused to't'fahs'ilops ding to this invention. re""2`isl`a` somewhat diagrammatical front nj a smaller scale of Figure 1 illustrating iv' infof Ithe' machin-e.

that 'ericirclethe stems of the upper'needlesfoi; "igu 3'is`a viewfof one needle bar and essoexar'npl'e' bvgivng both setsk of needles 'an ypfe' 15e. ciated'mechanism for actuating it.

d movement which'causes' these loops to"sli ie,' *A e 4 isja view of the other needle bar and d wn; theste'rns ofthe upper nedls; ntothe it 'assotiated actuating mechanism buried headsof' the lowerieedles).` bjcct'iyifj ure fisfaviewoiligures Sand 1i combined. the present invention is` theV provision"4 ofne 1,- 6 view of a 'catch bar and its 'asso-A ari'sm nforl effecting this deflection" of tiief ,Wi'fr s tatirfgfmechanism. @63165; e 'A ure? aviewof mechanism for actuating "Particularly in the method of manufacturing lnoclcg over bits. of fabricdescribed with reference'to' Fig'uresl 'gurfev 8` is a "view of mechanism for actuating ,to 26 of the specifications of theftwo patents above jacksprings.v I "9' isa view ofvrnechanisml for actuating ,A illlay plesser. """Figures '10i tof21 'illustrate various steps in the m6v .Y `efiitsbf needlessinkers, and knocking over -bits inthe production of ladder-resistant fabric n Le referred to, wu1e'22 andFigure 22a constitute a detail front' elevational vew'ofpart of the saidmachine.` i ffgliffZB "sfaplavri'view 0f Figure 22.` H

Figure f 4 'is 'anenla'rgement of` part of Figure Izaand. v, ,l t ,v "Figure 25 is a cross sectional View of Figure 24. Figure 26 Hisawview looking in the' direction of the arrow Xin Figure 5 illustrating mechanism' fo. ct ting both needle bars.

mentioned it is not practicable a s i rv needles.` f 27T is" a 'diagrammatical illustration Lf-'enfers according t0 the present iai/@ninas g the arrangement 0f slur ccksfoie friulf ecrans 'patent "or other, menubar, knitting' telf-insetti@- machine organised for. the mtqductcn df r11. r Fig-M523 samfront detalvew 0f th? @933mm pre er; and 'associated mechanism.

' 1115129` i's'a cross sectional view of part of 28., Y ,t ,a n re 30 is a detail perspective view of` part of resistant fabric bythe method formingt the Sub: ject matter of the aforesaid patents, is provided with a needle-deflecting device, additional tothe press edge and the knocking over bar, fdr "`15ro'duc`" th im, Ssf ing. such needle qenectionwa ""'Tliemachine illustrated by way of example is ha 0.,? in? 19W?? nfle-S Pelg bul' En if?? mat'des'cribd'in the specification of natefnt'ap'l eyes. Ff, Philippe? nesedls- Th1 i non senat Number 24,354 and is esneniauy located below thev knoclging o rr'fir'v'beaded Si" O f the ne@ es E,

Vign

fashioned blanks of ladies stockings. "Referring'now to Figures l, 2, l0 to 21Jv it will he t @tiene 1S Precisa? Sei si weer areset forth in lthe appended claims andare 'dislicable to machines for the'production` asepii needles I, of the customary bearded type, a set of lower needles 2 also of the customa-ry bearded type, customary sinkers 3 and knocking over bits 4. For the purpose of producing ladder-resistant fabric of the type referred to by means of these instruments they are arranged to be manipulated as illustrated in Figures to 21. Of.; j

these figures, Figure 10 illustrates a stage whereat the normal draw has taken place so as' to'sink a new yarn a around and between the shanks of bifurcated lugs 266 which embrace squared spinarms 209 fixed to a shaft 300 by bolts 30|.

needles I at a level above the beards of needlesE 2. The last knitted loops of the fabric are irl? dicated at b. Following this stagethe needles :f

are lowered in the customary manner as shown in Figure 11 so that the beards of the needles lI are pressed by presser 6, and the new loops a are 1 drawn through the o-ld loops b as shown in Figure 12. Both sets of needles then commence to rise"- again and as shown in Figure 13 the needles 2 are pressed by an auxiliary presser 5 (which constitutes a needle defiecting device according to this invention and which is to be described more fully hereinafter) in such manner that their tips are buried in grooves in the needles I, the result being (as shown in Figures 14) that thel last formed loops a are pierced by the needlesvr 2. Figure 15 illustrates the next draw whereat a new yarn c is sunk around the Shanks of both needles I and 2. Both sets of needles are next lowered and during such movement as shown in Figure 16'the beards of the needles 2 are pressed by the customary presser 6 at astage whereat the points ofi their vbeards are disposed between the new loops c and the old loops a but the said old loops a instead of being cast olf the needles altogether are knocked 4over onto the shanks of the needles I. Both sets of needles' now rise, Figure 18, with the old loops around the Shanks of the needles I and the new loops c disposed around `both the shanks of the needles I and of the needles 2. As shown in Figure 19 the needles next descend and during the said movement the beards ofthe needles 2 are pressed by the said presser 0, the lresult being as shown in Figure 20 that the new loops c are cast ofi the needles 2 and are received on the beards of the needles i. The needlesjnext further descend in such manner that the new loops c are knocked over the needles I (Figure 21) while the old loops a are still retained in the beards of needles i. The result of this sequence of operations is that the loops a which constitute ground loops are locked by the loops c which constitute locking loops and the thread of which encircles the legs of the loops of the ground thread.

It will be appreciated that as shown in Figures l0 to 21, the needles and 2, sinkers 3, knocking over bits 4 and the presser 5 are all actuated in a suitable manner to assist in the ,formation of thelocked loops; the desired motions are effected by mechanism now to be described with particular reference to Figures 1 to 9 and 26. Referring firstly to the needles it should be explained that the motions of both sets of needles to and from dles 201 freely rotatable in the rear ends 208 of The shaft 300 has also fixed to it a rocker arm I0 having a truck 8 at its lower end and this truck bears una cam A on the main cam shaft Z. The cam'A is shaped to effect the desired movements; for example the highest point 2|2 of the upper half of the cam corresponds to the knocking over position of the needles I shown in Figure 12 and the presser are effected through a common mechanism but a separate mechanism is provided for the up and down motions of each set. For this purpose the needle bar 200 (Figures 4, 5 and 26) is :provided with a pair of vertical guideways 202 for the receiption of a pair of slide members203 provided on the other needle bar, 20|. Thetwo bars are shown separately in Figures 4 and 3 and are shown in their operating position (Whereat the slide members 203 are guided in the guideways 202) in Figures 5 and 26. The needle bar 20|- is also mounted for pivotal movement about the position 2I| on the cam corresponds to the landing and pressing :position shown in Figure 11; the positions 2I0 and 2|3 to 2I5 also correspond tothe Figures 10 and 13 to 15; the position 2I6 corresponds to the second landing and pressing motion shown inFigure 16; the position 2 I8 corresponds to Figure 18 and is the second knocking over position and the final pressing and knocking over positions are indicated at 2 I9 and 22|,l corresponding to Figures 19 and 21.

For the purpose of imparting the motions to both sets of needles in a direction to and from the presser, the needle bar 200 has fixed to it an arm II to the lower end of which is pivotally connected a hand lever 302 this hand lever is formed with notches 303 cooperating with a peg 304 projecting laterally from an arm 305 fixed to a shaft 306 'and also fixed to the shaft 306 there is a truck arm 0 which carries a truck `I cooperating with .a cam B fixed to the main cam shaft Z. This cam B is suitably shaped to effect the desired motions and in the main it is Iprovided with high points at 3| I and 3|2 corresponding to the pressing and knocking over positions shown in Figures l1 and 12 respectively and also positions 3|6, 3|9 and 32| corresponding to Figures 16, 19 and 21 respectively which are the final pressing and knock-over positions.

For the' purpose of imparting vertical motion to the needle bar 200 the said bar is pivotally connected at its lower end to a pair of rocking arms I2 which are freely mounted on the shaft 4300.

Also freely mounted on'this shaft 300 there is a truck arm 30'I which is keyed to the rocker arms I2 by a key 308 (Figure 26) and which carries at its lower end a truck 309 co-operating with a cam C on' the main shaft Z. The cam C is provided with three main knocking over positions 4 I2, 4 II and 42| corresponding to Figures 12, 17 and 21 respectively. The sinkers 3 are controlled in part by the customary catch bar mechanism (Figures 1,472 and 6) consisting of arms I9 and 20 connected by links 2| and 22 to truck arms 23 and 24 having trucks 25 and 26 engaging with cams D and E. These -cams are suitably shaped and the 'main positions are indicated` by reference numeralsv'IIO, 'II2, 1|5, 1I6, II'I and 'I2I corresponding tozthe respective Figures 10, 12, 15, 16, 17, 21. The sinkers are advanced by slur cocks ina manner more fully described hereinafter. A hand lever 222 is also provided lfor the catch bar mechanism. Knocking over bits 4 (Figures 1, 2 and 7) are actuated through arms 2I, 223 connecting them totruck arms 2,8. 224, having trucks 29, 30 controlled by cams F, G; the main positions on these cams are again indicated by reference numerals 5I 5|2, 5|I and 52| and these positions correspond to the respective Figures 11, 12, 17 and 21. There is also .provided (Figures 1, 2 and the ,other for the locking loops. Each mechanism Y consists of a quality `cam H, I, acting von ka truck 36, 31 which is carried by a truck arm 38, 39 and the truck arm is xed on a control shaft to which is also fixed an arm |0|, bearing on a rod |03. This rod has fixed to it an extension 2 26 of the needle bar raising lever 9 so that movement of the needle bar is limited by the qglality cam I; adjusting means |05, |06 is also provided.

The Yauxiliary. presser or needle deector is arranged wholly beneath the knocking over bits 4 as shown in Figures 1, 28, 29 and itV is censti.- tuted by a bar member mounted to swing (under the influence of suitable cams, to be referred to later) about a horizontal axis ,23| (Figure 9) from a retired inoperative position (e. g. Figure 10) to an advanced operative position (Figures 13 and 14) in which its margin engages the stems of the lower needles 2 immediately below the knocking over bits 4. Thereby the lower needles 2 are deflected towards the upper needles and their heads (which desirably have a permanent set, as shown, towards the stems of the upper needles) are buried in eyes formed longitudinally in the stems of the upper needles I. Thus when the two sets of needles are raised in unison (as previously referred to) loops a of the main thread previously encircling the stems of the upper needles above the heads of the lower needles 2 are rst brought against the underside of the sinkers 3 (Figure 14) and, being arrested thereby. are transxed by the lower needles 2.

The margin of the deector 5 is out with notches or tricks in which the stems ofthe lower needles 2 are received immediately below the beards. By this means the heads lof the lewerv needles 2 are correctly registered with the eyes of the upper needles This register is facilitated by making the notches of V-.shape (see Figure or shaping their mouths so that their fianks converge, with the result that even if a needle is initially slightly out o f register as it enters a notch one of the flanks thereof engages it andv deflects it sideways into, register. The said auxiliary presser or needle de'iiectorS (ligure 1, l

29 and 28 to 30) has the requisite motion imparted to it by a cam J, acting 0n a truck 221 which is carried by a truck` arm 228., this truck arm 228 being in turn connected by a link 229` to a rocking arm 230 arranged to 'rock a; rock:l

shaft 23| to which the presser is fixed, and which is mounted on suitable brackets 232. An auxiliary'` spring 233 is provided for the presser and the presser is adjustably located by 4bolts 234. The cam J is provided with a low part 613, 6| 4 corresponding to Figures 13, 14. The cams A lto J'have been illustrated and described as beingl representative of any. suitable arrangement of cams and they are all mounted on a cam shaft Z. In the` preferred arrangement illustrated however (which is referred to in co-.pending application Serial Number 43,834), a single cam is substituted foreach pair of cams and each of these` single cams is so designed as to' effect the necessary movements for the` ground loops by one part; ofits` periphery and to effect the necessary movementsy for the locking loops by. another par-t, of its. periphery; in each oiv Figures 3 to 9 the,V upper.

half of the cam is for the ground locgpsv the lower belt is for the locking 1520115..V Y

` into action.

,If it is desired at any time to knit plain fabric e'. g. for `the Welt of a stocking, this is readily accomplished by additional cams associated with the cams A to I (and indicated in broken lines and by references P| toVPI in Figure 2) and onto which the trucks may be shogged; these additional cams are shaped to produce two successive plain stitch motions corresponding to Figures 10 to 12 and in the main for the purpose the lower halves of the additional cams will be the same as the upper halves thereof as indicated in broken lines in Figures 2 and 3 to '7.

If it is desired to continue employing the 4double draw mechanism and two main carriers when making plain fabric, either` the 4cam shaft Z is shogged or the appropriate trucks are shogged to bring the appropriate plain cams Fi to PI |V Additionally, instead of utilising both the carriers |56 and |53, it is preferred to idle the locking carrier and to introduce a new main carrier in its place. For this purpose a third carrier rod 400 (Figures l, 2, 22, 22a) 'and carrier 40| is provided, the rod 490 being reciprocated in the same manner as the bars |50, |5|; this carrier 40| together with the locking carrier |56, or are each arranged to be rendered operative or idle at the appropriate time by any suitable means such as a hand operated selecting catch or the like indicated at 432 which is xed to the machine frame and is arranged to be coupled to or disconnected from the carrier 40| lto prevent or permit movement thereof as and when desired. If desired, the main carrier employed for locked fabricmay be also idled (by similarl means to that above described) when making plain fabric and a fourth carrier (with associated rod and selecting catch or the like) may be employed in its stead.

Alternatively, if it is desired only to employ one carrier and a single draw for plain fabric; the cam shaft Z (or the appropriate trucks) is shogged as before and the locking carrier is idled by the means above referred to. Additionally either the bolt 50 or 58' (hereinafter referred to) is rendered inoperative by any suitable means;

for example the appropriate bolt is withdrawn out of the path of the blocks 54, 54' and a hand operated catch or the like indicated at 403 in Figures 1, 2, 22 to 25 is employed to maintain the bolt 50 or 50' in its retracted position.

It is to be understood that whereas only hand operated mechanism has been referred to for selecting the carriers and the bolts, these operations may be readily-carried out in a semi-automatic or completely automatic manner by any known or suitable type of selectin-g mechanism operated 4e. g. from the main pattern chain of the machine.

Fashoning cams shown in broken lines at Fi to F|| are also preferably provided, one associated with each cam A to I and onto which the trucksA maybe shogged (or which are moved under the trucks by shogging the cam shaft) to permit fashioning to be carried out in the customary manner. Additional cams F|2 are provided controlling customary fashioning points through the intermediary of customary mechanism.

Each truck maybe moved onto any one ofthe three cams associated with it by any suitable means such as by shogging rods controlledby the customary main pattern chain. Alternatively, the. camy shaft may be shogged into any one of three alternative positions by any suitable means such as, by providing a cam on the cam shaft which is, laterally stepped on both faces and has a truck engaging each face, the arrangement being such that the trucks are controlled bythe customary pattern chain to engage appropriate steps of the cam so as to shog the cam shaft for the appropriate distance in either direction. The aforesaid shogging mechanism is known in the art and needs no further description or illustration herein.

In the machine illustrated (and later to be described more fully) the slur cock tie bar is provided with slur cocks which are spaced apart by an amount at least equal to the width of the division so that only one slur cock operates on the jacks at a time. The arrangement of the machine is such that this tie bar is capable of at least twice the normal traverse thereby permitting it to be traversed in either direction firstly by an amount sufficient to cause one slur cock to operate all the jacks and subsequently by a like amount suiiicient to cause a following slur cock to operate all the jacks. Thereafter, of course, the slur cock tie bar is given a like twostage movement in the opposite direction. For the purpose of illustration, the machine shown is a single division machine and consequently only two slur cocks 49a, 49h are provided. In the case of a multi-division machine there is one more slur cock than there are divisions and these slur cocks are spaced apart by an amount equal to the distance between the centres of successive divisions as indicated in Figure 27.

Referring again to the drawings and particularly to Figures 22 to 25 there are provided two Coulier or draw mechanisms 4U, 4l moving in opposite directions through the intermediary of bevel gearing 42, and the construction of each draw mechanism may follow known lines and may for example consist of a draw lever 43, 44 swung to and fro by a draw cam 45, 46. Each draw lever is connected to a driver 41, 48 and mechanism indicated by the reference numerals 41a, 48a is provided for connecting and disconnecting these drivers 41, 48 to and from a tie b ar 49 carrying the slur cocks 49a, 49h. The said mechanisms 41a, 43a are substantially identical and for the purpose of description the mechanism 41a is shown in enlarged detail in Figures 24 and 25. Each mechanism incorporates a slidable bolt 56, 56' carried by the driver 4i, 28. This bolt is biassed by springs I, 5I' into a projected attitude whereat a ball bearing truck 52, 52' carried by it is located in the path of a cleft 53, 53 formed in a block 54, 54. The operation in brief (and described more fully later on) is that block 54, 54' is carried by the tie bar 49 in such manner that when the tie bar is traversed say to the left into the position shown in Figure 24 and the bolt 59 is projected, the truck 52 rides along a ramp 55 carried by the block 54 to guide the truck into the cleft 53. travels to the right and the bolt 54' is projected the truck 52 rides along a ramp 55 (which is oppositely directed to the ramp 55) to guide the truck into the cleft 53. Means are provided for moving the bolts 50, 56 out of the path of the clefts 53, 53' at appropriate times and saidmeans preferably consists of cams 65, 66 fixed on a cam bar 61 which is shogged periodically first in one direction and then in another. The cams 66, 66 are arranged to withdraw the appropriate bolt 5t, 5t' by engagement of the cams with ball bearing trucks 50a, 50h, one on each bolt. The cam bar maybe shogged by an abutment on the tie bar striking a part of the cam bar at the Similarly when the tie bark end of each double traverse'or by a rotatingcam, the speed of which is one quarter of that of the main cam shaft. Preferably however, as shown in the drawings, said means consists of hydraulic mechanism. This mechanism as shown in Figure 22 consists of a motor driven pump 16 for setting up pressure in a supply line 11 through a pressure gauge l8-to a hydraulic jack 19 through a two-way valve 6U. From this valve there are two lines, one to each end of the jack and there is afvalve rod 266 arranged by its end-wise movement in opposite directions to open either one of these lines to the pressure in the pressure line. The valve rod 260 is actuated through the mediumv of a slidable rod 261 on which there are spaced abutments 6l, 62 and these abutments 6i, 62 are located in the path of an .actuating member 63 carried by a block 84 fixed to the tie bar 49. The arrangement is such that at the end of each double traverse of the tie bar the rod 26| is shogged in opposite directions and the effect of this is for the piston 262 of the jack 19 to be projected or retracted. The end of the piston 262 is arranged to engage an adjustable abutment 65 carried by the cam bar 61 and it thus follows that at the end of each double traverse the cam bar is shogged to actuate the appropriate bolts.

More specifically the arrangement is such that a complete cycle of movements is effected as follows. Assuming that both the slur cocks are located at the left hand end of the division, the drivers 4l', 48 are at their widest distance apart;

the bolt 50 of the driver 41 is engaged with the' cleft 53 and the bolt 50' of the driver 48 is disengaged from the cleft 53 by the cam 66'; the cam bar is located towards the left hand end of the machine. For thel next stage the drivers move towards each other and because the driver 41 only is connected to the tire bar by the bolt 50 the slur cocks move to the right and the leading slur cock passes across the division of needles. At the end of the draw the truck 50a engages the cam 65 so that the bolt 5] is withdrawn; the cam 66 is out of the path of the bolt 50 Which therefore automaticallylengages the cleft 53. Subsequent movement of the drivers in an outward .direction results in the tie bar movinga further distance to the right because now only the driver 43 is connected to the tie bar and therefore the trailing slur cock now passes across the division from left to right. At the end of this traverse no change is made to the bolts 5D, 50' with the result that at the next stage (i. e. when the drivers move inwards) the driver 48 only is operative by virtue of its connection with the tie bar and-therefore the tie bar and slur cocks move to Athe left. 'At the end of the previous draw to the right, however, the control rod' is shogged to the right by the projection 63, the result being that the cam bar is also shogged to the right; Therefore, as shown in Figure 23, at the end of the aforesaid draw to the left the camy 66'l breaks the connection of the bolt 50 with the driver 48`and the bolt 50 automatically connects with the driver 4l; consequently for the next stage the tie bar and the slurY cocks move a further distance to the left to their original position; at this position the control rod 26|` is shogged to the left so that the parts are then suitably arranged for the cycle Vof operations to' be repeated. Y v

In a multi-division machine the first stage of

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