US2206178A - Jacquard for terry looms - Google Patents

Description

July 2,1940. H. v. FOSTER JACQUARD FOR TERRY LQOMS 4 Shets-Sheet 1 Filed July 30, 1938 Inventof Herbert V. Foster A oney I July 2, 1940.

H. V. FOSTER JACQUARD FOR TERRY LOOIS 4 Sheets-Sheet 2 Filed July 30, 1938 July 2, 1940. H, v, FOST R 2 2,206,178

JACQUARD FOR TERRY LOOIS Filed July 30, 1938 4 Sheets-Shee t 3 ttorne.

Patented July 2, 1940 PATENT OFFICE Crompton & Knowles Jacquardsr Supply Com- 4 pany, Pawtucket, R.I., a corporation of Massa- Application July so, 1938, Serial 222,184 r 16Claims. (01.13. 149) This invention. relates to improvements in jacquard mechanism for looms and it is the general object of the invention to provide a jacquard more particularly adapted for the weaving of a terry fabrics havingfigured patterns.

3 In weaving so-called three pick terry fabrics three beats of the lay and shuttle flights are required to complete one row of tufts across the cloth. The weft is held in arearward position 10 forthe first two picks and then is given a full forward motionwith the third pick, the pile warp lying between the picks and the preceding row of tufts being looped when all three picks arebeaton up. The loom therefore operates on a three Ypick cycle although occasionally so-called four pick terrys are woven.

When the pile warps and the loops formed from them are controlled so as to produce a fancy pattern it has been customary heretofore to have zu a separate card on the jacquard for each pick of the loom, necessitating thre e cards for one row of terry tufts. It is an. important object of my presentinvention to economize on the cards by providing a jacquard so constructed and op 2e erated that one card will suffice for the three picks for each row of tufts.

During the weaving of the unfigured body of the fabric half of the loops lie on one side and half on the other side ofthe cloth, and this re 3o-sult is achieved by dividing the terry. forming warp into two sheds the upper ofwhich forms the. top tufts and the lower of which forms the bot;

tom tufts. When the figured part of the pattern is woven from warps of the same color, all 35 of the tufts are-thrown to one. side of the cloth to produce a dense pattern effect which leaves the opposite side of the cloth. blank. Another. method used preferably where colors are. in-

volved reverses the location of the tufts, the blue 40 tufts, for instance, which were on the top of the unfigured part of the fabric are thrown to, the bottom, while the corresponding white tufts on the under side are thrown to the ,top. In. this method tufts are formed on both, sides and the 45 pattern effect is achieved by a difference of color.

My invention to he set forth herein-after is equally adaptable to the production of either of these types of figured terry fabric.

It is an important object of my invention to 60: provide three sets of hook lifting knives which are so actuated that at any instant in the jacquard operation one knife will be rising, the second knife will be descending, and the third knife Will be stationary, each knife in its turn at three 69; pick intervals...rising for, one. pick, -then .falling in the fabric.

for one pick, and then dwelling stationary for one It is another object of my present invention to provide two lifting jacks for each lifter cord and form one of said jacks with oppositely facing hooks so that the pair of jacks present three hooks, one foreach knife. Each pairof hooks is controlled by a singleneedle the positions of which is determined-by a card of the jacquard and a single hole punched in the jacquard card will suflice to give indication for three consecutive picks.

It is still another object of my present inven-" tion to provide mechanism for reversing the movement of the knives and the jacquard cylindersto permit the removal of a defective pick The driving mechanism for the knives is so constructed that reversal of the driving mechanism uses the knives to operate in the reverse order. The fact. that the jacquard operates to produce a complete row of tufts from one card makes possible the use of one cardto produce anarea of plain. or unpatterned terry tufts and it is a further object of my invention to combine the jacquardwith a multiplier to be set forth in de tail hereinafter and effective when called at the end of a figured pattern to render the cylinder turning pawl inoperative and thereby maintain a-single card in control of the jacquard during theweaving ofa blockof plain terryloops.

With these and other objects in View which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth.

In the accompanyingdrawings, wherein a coni venient embodiment of my invention is set forth, Fig. 1 is a side elevation of the upper part of a loom having attached thereto a jacquard made according to my present invention,

Fig. 2is an enlargement of a portion of the upper part of Fig. 1, showing the cylinder operating echanism, r

Fig. 3 is a vertical section on line 3--3 of Fig. 1, l

Fig. 4 is an enlarged side elevation of the up- V per part of Fig. l with the sprocket wheel removed, l 1

Fig. 5 is a plan View taken in the direction of arrow 5, Fig. 4,

Fig. 6 is a vertical section on line 66, Fig. 4, r Fig. 7 is an end elevation taken in the direction: of arrow 1, Fig. 4, i i

Fig. 8 is a diagrammatic view showing the relation of the knives, pairs of jacks, jacquard cylinder and cards, and the lifter cords, two needles entering holes in a card and two being pushed back by blank places on the card,

Fig. 9 is a diagrammatic view of a weave when the pattern effect is obtained by reversing the Fig. 11 is a diagrammatic view of a weave in which the patterned effect is obtained by throwing all of the figured terry warps on one side of the cloth, 7 v

Fig. 12 is a view similar to Fig; 10 but showing the fabric made according to the weave set fort in Fig. 11,

Figs. 13 to 16 are diagrammatic views showing the successive steps informing a row of terry tufts, I

Figs. 17 and 18 show two setsof cards punched to produce the weaves shown in Figs. 9 and 11, respectively,

Fig. 19 is an enlarged detail side elevation of the multiplier mechanism shown in the upper right hand part of Fig. l, and

Fig. 20shows a set of cards punched to control the multiplier. a

In order that the invention may be more readily understood I will. first describe the types of patterned terry fabrics set forth in Figs. 9 and 11. For convenience in illustrating the weave I have 'shownthe picks of filling separated in. groups of three, the groups being indicated at I to VII, inclusive, and the picks of each group being indicated at a, b and c, in the order in which they all).

formation of tuft piles.

are laid by the shuttle. It is to be understood that there are two different sets of warp threads in terry fabrics, the first of Which forms the ground weave and is tight throughout the weaving of the fabric, while the second set is drawn from a different warp beam and is slackened periodicallyat three-pick intervals to permit the Each of these sets of warp threads is interwoven with the picks of filling, the ground warps having always the same relation with respect to the filling and undergoing no change when the pattern is formed, while the terry set will also sustain the same relationship to the picks of filling while unpatterned terryis being woven, but the terry warps change their relationship with respect to the picks of filling at the beginning and ending of a patterned figure, the relation of the terry warps with respect to the picks of filling, being unchanged throughout the weaving of the figures. The jacquard to be describedhereinafter controls the terry warps and the usual cam harness mechanism not shown is employed for the weaving of the ground warps.

Referring to Fig. 9, the terry warps and 26 are represented at the left hand of the figure as at the top and bottom, respectively, of the shot of filling Ia. In this typeof weave the terry .warps may be of different colors, the warp 25 passing under shot Ib and over shot 10. The lower warp Ziihas the opposite relation with respect to theseshots and leaves the group I under the warp 25. The space between shot 10 and .1111 rep-resents the length of terry warp which is to make the tufts pile. That part of the weave already described constitutes a normal non-pat-- terned part of the fabric before the patterned area is reached.

When the location of theterry warps is to be fabric.

reversed the relation will be that shown in group III. The relation of terry warps in this group which its relationship with respect to the shots of filling in group III will be as indicated, the length of terry Warp 25 between shot IIIc and Iva from which the terry tuft is formed being now on the under side of the fabric. In a similar manner the terry warp 26 is on the top of the The interweaving of the groups IV and V will be similar to that of group III, and it is to be understood that there will be as many groups similar to IV and V as are required by the figure being woven.

When the'terry 25 is to be returned to the top of the fabric the relationship will be that shown in group VI where warp 25 is raised to lie over shot VIa, this marking the end ofthe pattern figure, after which the'relation between the shots of filling and the two sets of terry warps will be the same as that described for the group I. When all the loops are formed in the fabric.

stance the set 28 remains unchanged throughout the weaving of the pattern, being the same for both thebody and pattern, the warp 28 passing over the center shot of each group and under the other two. The warp 28 is therefore not necessarily controlled by the jacquard since it has a simple invariable three-shot cycle, and a three pick cycle cam harness mechanism as commonly used may be employed.

The other warp 21, however, is changed so that at times it is on the upper part of the fabric,

as suggested at the left and right hand ends of Fig. 11, and at other times parallels-the warp M as suggested in the intermediate part of said figure to form the pattern. Under these conditions warp 2! will be controlled as is warp .25.

The fabric produced by the weave shown in Fig. 11 is set forth in Fig. 12 where the right and left hand ends. of the fabric have piles on both sides, whereas the intermediate portion has all.

of the piles thrown to the under side, the upper part being blank to form the pattern.

It will be seen by referring to Figs. 9 11 that the upper set 'of warps starting at thelcft hand end indicated at 25 and 2'! undergo a change when the pattern is reached and also when it is concluded and that in Fig. 9 the lower warp 25 has a similar but opposite relationship. In order to simplify the description the mechanism will be described as though it were to weave thefahric shown in Fig. 11, but it will be understood that the jacquard cards can be punched to produce the weave of Fig. 9, as will be set forth hereinafter. Referring more particularly to Fig.1, I have shown a loom. frame 30 having a lay 3i and areed 32 which is given two relative settings with respect to the lay by means of mechanism such as that shown in Patent No. 2,082,888. This mechanism is well known and is thought to need no further description other than to say that thefirst two picks of a cycle are beaten up to a positionbehind the fell, as in Figs. 13 and 14,

lwhile the third pick is beaten up to the first two as in Fig. 15, and then on the same beat all three shots are beaten to the fell of a cloth, thereby bending the terry warps to form tufts. The lay may be driven by the usual connector 33 actuated by the top or crankshaft 34 of the loom.

The jacquard J comprises cross timbers. 35 mounted on uprights 36 supported from the floor and hasa frame .31 and a card rack or guide 38.

I provide three sets of vertically reciprocating knives indicated at 4|, 42 and 43. each set compaths as the camslrotate.

prising several knives which move together, The knives 4! are carried by a rack 45 which is raised and lowered by links. 5| adjustably connected. to vertically rocking levers 6 I.

Each cam is secured to the shaft 46 which rotates once each three picks of the loom by mechanism to be described and the cams areall alike. each having a driving groove 52 to receive a roll 53 on the lever itdrives. dwell 54 and a high dwell 55, the dwells being connected by inclines 56. The grooves are symmetrical about a diameter and the lines of symmetry of the several cams arespaced 120 apart so that each cam comes to its high position every third pick and one or another of the cams reaches high position each pick.

The low dwells 54 cover approximately 120 around the shaft 46 and cause a low dwell of the corresponding knives for onepick of the loom.

The levers BI, 62 and 63 are all pivoted as at 59 to. a fixed axis supported by the auxiliary frame 4!). From the mechanism thus far described it will be understood that a complete rotation of shaft 46 will cause the sets of knives to move as previously indicated, that is, one set will be moving up while another set will be moving down and the third set will be dwelling in low position.

Rotation of shaft 46 is accomplished by the mechanism shown in Fig. 1 which includes a.

sprocket gear 65 fastened to the shaft 46 an I driven by a chain 66 trained around a sprocket tions by means of chain 16 witha sprocket TI on the crank shaft 34. Rotation of the crankshaft.

therefore causes rotation of the gears 68 and which in turn drive the sprocket 65. The latter is three times the diameter of the sprockets 61 and I5 which are equal, by which relationthe shaft 46 is given one complete rotation for each three rotations of theshaft 34.

A hand wheel 18 is cast integral with the sprocket I! and has a hub I9 freely rotatabl on r the shaft 34. An arm 80 has a spring plunger 8| provided with a hand hold 82 by which the plunger may be moved outwardly against the The levers 6| Jare driven by cams 'II fixed to a shaft 45 journalcd Eachcam has a low A second gear action of spring-83: The plunger head-fits into a; bore 84 in the hand. wheel and the arm is keyed as at 85 to the shaft 34. When the plunger is'in the position shown in Fig. 3 the sprocket I1 is driven by shaft 34,'but.when the hand hold 82 is pulled out to-disconnectthe shaft 34 and arm 80 from the hand wheel, the latter can be rotated I to turn the sprocket TI independently. of the loom, thereby causing rotation of shaft. 46 while the loom is at rest. The purpose of this. mechanism'is to permit the weaver to correct a mispick by finding the proper shed in which the mispick occurred through operation of the hand wheel 18 independently of the loom, after which the plunger 8! is returned to normal position to establish driving connection between the shaft 34 and the sprocket TI.

The card cylinder isoperated by a fourth cam 90 secured to shaft 46 and having a groove 9| to I receive roll 92 and lever 93 fulcrumed at 50. 4

bell cranklever 95 moves about a fixed axis 96 has driving connection with lever 93 through an adjustable link 91 and inturn is connected by a second link 98 to a driving head 99 adjustably secured to a rod I00 slidable horizontally on the jacquarduframe. The outer end of the ro'd'Tfili has provision indicated generally at IIII for supporting rotatably thereon the jacquard cylinder I02. An operating pawl I03, Fig. 4, pivotedat IM to the jacquard frame has a hooked head I95 to engage successively the several pins I06 formed in the corners of the cylinder at one end thereof. mon construction and except for the cam 90 may be made according to accepted practice.

The cam 90 has two high points H9 and Ill witha low intermediate run. I I2 connecting these points on one side of the shaft 46 and a stilllower run I I3 on the opposite side of the shaft. When the roll 92 approaches one of the high pointsthe parts are rocked in such a direction as to move the cylinder I92 to the left or in toward thencedles ll5fiand when run H2 is occupied by the roll92 the cylinder is moved away from the needles a slight amount not suificient however to cause engagement of the pawl I03 with one of the pins I06. As the cam moves in the direction of the arrow Fig. 2, theother high point then operates to move the cylinder back toward the needles, after which the low run H3 comes into play to move the cylinder at its maximum distance away from the needles andcause turning of the cylinder by the pawl I03 in well-known manner. I

The cylinder has trainedthereover a series of jacquard cards C, C C etc., which are presented to the needles one at a time every third and jacks which control the terry warps of one longitudinal row of terry tufts, it being understood that the remaining needles and jacks will operate in a similar manner.

'As shown in Fig. 8 each group of three knives is associated with two upright jacks M8 and H9.

the first jack having a hook I2I for engagement with knife 4| while the secondjack H9 has hooks l22 and I23 for engagement with knives The matter just described is of com- I -The lower end of 42 and 43, respectively. The: hooks I22 and I23 point in opposite directions and are so related that when one of them lies in the path of the knife corresponding thereto the other hook will be out of the path of its knife so that but one ofthe knives 42 or 43 is able to lift'jack I I9 at a time. 7

each jack is provided with a supporting hook I25 which rests on a stationary plate I26 and a link I2I connects the bottoms of the'two'jacks to a lifter cord I28. When'one of the jacks is raised the link I2! moves upwardly therewith to elevate the cord I28 and slides along the bent lower part I29 of the unraised jack.

- Eac'h needle H has a pair of loops I30 by which it controls the pair of the jacks lid and H9 and has theusual spring I3I to hold the and I 23 in the paths of their knives II and 43, respectively, while hook I22 is out of the path of its knife 42. This relation is shown at the right hand pair of jacks in Fig. 8. When the needle is pushed in or moved to the left as viewed in Fig. 8 both jacks controlled thereby change their relative position with respect to the associated knife, hooks I2! and I23 moving clear of their knives while hook I22 is placed over its knife 42.

In describing the operation of the jacquard it will be convenient to bear in mind that a punched hole in the card has the same effect on needle II5 as though the card were not in indicating position, such as would be the case if the cylinder were moved out tobe operated by the pawl I03, and it is also convenient toremember that after knife '42 has engaged hook I22 when rising the position of hook I23 will be determined independently of the. card until knife 42 descends to a point where it can'release hook I22. The cylinder and card therefore need not be in indicating position during the interval in which the knife 42 is in engagement with hook I22. Each knife rises during one pick and falls during the nextpick, and the outward card feeding and relift hook I2I during the descent of knife 43 and thereby raise terry warp 21 for the laying thereunder of shot Iw. Knife M then starts down and a knife 42 starts up without engaging hook I22 so that warp 21 will be down and shot 11) can pass over it. As soon as the normal time for engagement of hook I22 by knife 42 is passed in the ascent of knife 42 the cylinder is moved out bydecline H3 of cam 90 to be given a quarter turn by the. pawl I23.

As knife 42 starts down a knife 43 will start up and will engage hook I23, since the latter is normally positioned over knife 43 by the corresponding spring I3I, this condition existing when the card is away from indicating position. Warp 2? jthe'refo-re is raised again for the passage thereunder of filling shot 10. This sequence continues so long as unfiguredterry warps are to be woven by warp 27 and the latter will form terry tufts on the top surface of the fabric. As many un figured rows of tufts as are needed will bev thus formed, one additional row being provided and formed. by unit or group II, Fig. 11.

During the manipulation of warp 21 just described an opposite control will be exercised for terry-warp 23. A blank space 280. on all the facing the needles.

cards shown in Fig. 18, corresponding tothe weave of Fig. 11, controls a needle II4 which positions a second pair of jacks H6 and I I1 corresponding respectively to jacks H8 and H9. In the sequence forwarp 28 a knife 4| will rise without lifting jack IIIS, a knife 42 will then lift jack III and a knife 43 will then rise without effect on jack III despite the fact that the cylinder is out because jack I I1 is still held to a knife 42. Warp 28 forms the terry tufts on the bottom of the fabric throughout the weave shown in Fig. 11, and a further understanding of the manipulation of warp 28 will be gotten by the description to follow of the manipulation of warp 2! to place its. tufts also on the bottom of the fabric.

At each complete out motion of the cylinder a new card will be placed in controlling position Cards C, C2 shown in Fig. 18 are punched with holes 21a and left blank at 28a toproduce the manipulations of warps 21 and 28, respectively, as shown in groups I and II,

Fig. 11.

It is assumed that the figured pattern will start at group of shots III, Fig. 11, in which case card C3, Fig. 18, will have that part thereof controlling needle I I5 left blank at 21b, and as high point I II! of cam 90 moves the cylinder in to place this card in indicating position, hook I2I will be moved out of the path of knife 4|. Knife 4| therefore rises without -lifting warp 21 and the latter will be under shot IIIa. During up motion of knife 4|, however, knife 43 is descending and in engagement with hook I23 from the previous cycle, and jack H9 is therefore under a strain from needle II5 tending to bend it to the left as viewed in Fig. 8. In order to relieve I this strain the cylinder is backed off slightly by run II 2 of cam 90 as soon as the normal time for engagement of hook I2I by knife 4I during ascent of the latter has been passed. This backing off of the cylinder, which occurs once for each three pick cycle of the 100111 is not enough to' cause turning of the cylinder by pawl I43. Knife 43 reaches its low position and therefore losescontrol of hook I23 before knife 42 starts up. High point III of cam 94 now returns the cylinder and card tothe left as viewed in Fig. 4 to give an indication for hook I22 just prior to rising of knife 42. Knife 42 will then raise hook I22 and warn 21 will be above shot I111). The cylinder is moved all the way out by decline I I3 of cam 90 to cause turning by pawl I43 to" place the next card in controlling position.

Knife 42 now holds both hooks I22-and I 23, and as previously described, this will determine the position of hook I23 011 the next pick. As knife 43 ascends hook I23 will be held out of its path by hook I22 and knife 42 and warp 21 will therefore bedown at the end of the up motion of knife 43 so that shot IIIc can pass over warp 21. This places warp 21 in the bottom shedand its tuft loops will be on the underside of the fabric the upper side of the cloth, and the figure; so far as warp 2'! is concerned, is completed. An additional card Q] is shown to form group VII which When. the pattern is tobe formed as suggested inFigs. 11 and 12, therefore, there will be no change in the several cards with respect to their .control of the lower tuft forming warp, 28, and I the variation in the punching of the cards will come only with respect to. the control exercised bythe cards on Warp .21. 1.

Turning. nowto the fabrics set forth in Figs. 9 and 10 it will be seen that warp 25. is controlledin a manner exactly similar to that al ready. described for warp 21. forming the bottom tufts, however, is controlled. the same as that of warp;,25 except in reverse Warp 26 normally direction, and wherever: the cards have a hole .punchedfor the liftingof warp there; will be a corresponding blank for lowering the warp 26, inasmuch as these two warps 25 and 2 8. are always on opposite sides of any given shot of filling.

. In thisinstance the pattern is produced by a color change, warp 25 being one color while warp 26. is of a different color. and there willbe tuft loops onboth sides of the fabric throughout the length of the. pattern. I i M u yFigql'I shows a seriesof cards which will produce the weaves found in Fig. 9. In these cards it is assumed that the upperlleft hand corner of eachcard is reserved for the control of the warp threadwhich normallyprovidesthe top tufts in an unfigured part of the cloth and that the lower leftrorner controls the ,warplthreads normally formingi the bottom tufts. In Fig. 17 cardK corresponds to the group OfShOtS I, Fig. 9,.and theperforation 25a. causeslifting of warp 25 over sho'tIcrQlowering under shot lb and lifting over shot Ic as did hole 211; for warp 21 in the previous description. Cards K. zfKe and Kl have punched holes 25a in their upper left corners,

while cards K3, K4 and K5 are blank in that corner, these cards being thesame in this respect as the correspondingcards of Fig, 18, and therefor causing ,warp 25 to be like warpll. I ,Warplfi is disposed asis warp 28in groups I, II,; VI and, VII. and the corresponding cards K", K2, K5 and K1 are thereforeblank in their lower left corners, as ,arepards C',;C2, C5 and Cl.

Inthe three shot groups III, IV and V, however,

warp 26is disposed oppositely. to the arrangement of warp 28in :the corresponding groups of Fig.,11 andthereforewhere cards 03, C4 and C5 are blank in their. lower left. corners, cards K3.

K4 andKE are perforated, see Fig. 17, to cause warp 26 to lie under shots bof groups. III. IV and V and over shots aandc of these groups. .This

arrangement of holes and blanks means that the warpstZB and 26 arealways onopposite sidesof any given I shot of filling, a' condition already.

pointed out as essentialto the weave shownin When apick-out is made to correct amispick incloth, plunger 8I is pulled out to disconnect shaft! from the hand wheel "I8and the latter controlled by one card areremovedthe cylinder. I02is turned back by. well-known reversing mechanism shown in Fig. 1 and including a pull cord I 80, lever; I8I pivoted to the upright I82 movingwith the cylinder, and a reversing pawl. 183 on leverIBI to be raised when the cord is pulled down toturn the cylinder in a reverse direction. This presents the previously active card in control position, after which the wheel 18 may be given three more revolutions, one at a time.

This procedure is followed until the faulty pick isreached, after which the plunger 8| is again caused to establish driving connection between the shaft 34 and the sprocket I1. and weaving will beresumed. By taking out a number of picks which is a multiple of three and by turning the cylinder back a number of cards equal to the multiple or one-third the number of total revolutions of wheel 18, the reed controlling mechanism of the loom, the cylinder motion, and the sequence of lifting motions of the knives are all,

coordinated and after the take-up has been turned back and the beams for both the ground All three of the cams "II, I2 and 13, and also cam 9|] are symmetrical and may therefore be and terry warps have been turned back the proper amount the loom is in condition for weaving. I

set to drive the jacquard either in the sequence already describedor in the reverse sequence, the cams having their settings altered to produce results similar to those already described when the;

by a cam motion and in the pick-out operation,

if a cam harnessmotion is used, it will be necessary to carry the pick-out far enough to .find the correct shed for the ground warps.

Terry units I, II, VI and VII, Fig. 9 produceplain unpatterned rows of shots and since each unit derives its indication from a single card am able to use a multiplier. the effect of which is tomaintain a single card in control of the jacquard to produce a plurality of rows of plain terry tufts. This feature of my invention is set forth in Figs; l, 19 and 20.

I The ,multiplier M is mounted on the cross timbers 35 of the jacquard. and includes a stand I carrying. a shaft ML to which is secureda chain cylinder I42 and a ratchet wheel I43. I A multiplier chain I44. on the cylinder has in. the

present instance a single small or low roll I45 and a number .oflarge rolls MB. A lever I41 on a jacquard cylinder feedpawl I53, which will be similar to pawl Hi3 but modified by theaddition fixed pivot I48 has a] shoe I49 which rests on I i and is positioned, by the rolls on the chain. An arm I50 of lever I41 is connected to an ascend: inglink I5l attached to a finger I52 on the of the finger. A yielding lock roll l54usual in multipliers is provided ;to cooperate with a notched wheel I55 fast with shaft I4! and hold the cylinder with either the low or one of the high rolls of the chain under the shoe I69 between the step by step movements of the cylinder. I I 3 In orderto control; and actuate the multiplier chain .1 provide the jacquard with a multiplier jack I preferably inline with one of the jacks H8. andmade similar. to thelatter for cooperation wtiha knife 4|. The lower end of this jack is connected. by a link I6I to. a lever. I62 pivoted as at I53 to the frame I40. The right end of lever I62as shown in Fig. 19 is connected by link I64 I to a lever I65 mounted loosely 'on shaft MI and having pivoted thereon a feed pawl Ililifor co-' operation with ratchet wheel I43.

spring I6? is provided for holding the right ends A tension of levers I 52 and IE elevated so that the pawl I 66 will be normally in relative left hand position,- as shown in Fig. 19.

. of these cards, shown in Fig. 20, control the mul- A needle ill) controlling the jack I60 is positioned for control by the jacquard cards. Certain tiplier and will be punched at 250. in their upper left hand corners to produce plain terry, being similar in'this respect to other cards in the chain already described. AlthoughI have shownbut one perforation 25 as, in Figs. 17 and 18, there will nevertheless be a seriesof these punchings to control pairs of jacks. The cards for the pattern, as shown in Figs. 17 and 18', will be blank in their upper right corners to push jack I out of the path of knife 4|. 7

The first card to control the multiplier, shown at M, Fig. 20, will be punched in its upper right corner at I to allow jack I 60 to remain in the path of knife 4L. The latter will therefore lift jack ISO to turn lever I65 in a right hand direction as viewed in Fig. 19 and give the pawl I66 a right hand feeding motion. Prior to the 1 beginning of this operation the shoe I49 rests on low roll i445 which permits the cylinder pawl I53 to be in the down full line position of Fig. 19, but feeding motion of the pawl I66 turnscylinder I42 clockwise one step to present the first of a 1 series of high rolls I46 under the shoe I49 to raise it.

Lifting of shoe I49 moves lever I47 and cylinder pawl 553 to the dotted line, Fig. 19. Jacquard pawl I53 will be raised to inactive position relatively to the cylinder. As the latter moves outwardly away fromindicating position it will not pawl I53 will fall momentarily to turn the cyl- I be turned because of the inactive position of pawl I53 and card M will again be presentedto the needle H0, whereupon engagement of jack I60 by the ascending knife M in the next cycle will again feed the multiplier cylinder another step to place the next high roll under the shoe I49. This continues until thelast high roll has passed from under shoe I49,- whereupon low roll I 45, appearing under the shoe, permits pawl I53, to fall by gravity to feeding position. There will then have been woven as many rows of terry loops as there are rolls in chain I44. Ihe next out motion of cylinder Hi2 will therefore present I a new card to active position.

complete rotation of the multiplier chain the Y low roll I45 will move under shoe I49 and the inder' I02 to feed the next multiplying card to active position.

The card following the last multiplying card will be blank in" its upper right corner to prevent operation of the multiplier, and this condition will exist for all cards weaving the pattern following the plain" area. m

7 One of these cards is shownatP',1=ig.20. V l

" Fromlthe'foregoing i'twill be seenthat-Ihave provided a jacquard for weaving a three-pick terry wherein a single card can be provided-for each row of terry tufts, each card corresponding to three successive beats of the 100m. It will also be seen that inasmuch as the hooks which are to be engaged by knives 42 and 43 necessarily move together, an indication from the card at the beginning of the 'up motion of knife 42 suffices also as an indication at the beginning of the up motion of knife 43 and the cylinder can be moved out for a partial revolution to move the next card into indicating position during lifting of knife 43. It will also be seen that cam is so made with the decline H2 as to relieve bending strains on the jacks after the time for indication and start of up motion of knife 4| has passed. The cams for controlling the knives and cylinder are symmetrical so that the jacquard" tion of the reed with respect to the lay, while the other motion controls the lifting of the knives and the motion of the cylinder. Furthermore,

provision is made for reversing the jacquard to It will also be seen that I permit a pick-out. have provided a jacquard for weaving terry fabric iii) so constructed that there may be combined with it a multiplier, for the production of blank unfigured terry tufts area, this condition existing because of the fact that a single card suifices for the three-pick terry forming unit.

Having thus described my invention it Willbe seen that changes and modificationsjmay be made therein by thoseskilled in the art, without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is;

1. In a jacquard mechanismfor a loom to weave a t'erryfabric having successive three pick groups of weft," each group being formed in a cycle and thelast weft of one cycle being in the same shed as the first weft of the succeeding cycle and having a warp, to be in a given'position for the first and third picks of a cycle and in the opposite position for the second pick of the cycle, a single card to control the position of the terry warp for successive cycles, and means cooperating with the card and including three knives and mechanism to raise said knives one at a time and lift each knife during a pick of the loom to cause said terry warp to be in said given position at the conclusion of the rising of the first'and third 'knives and. be in said opposite position at the conclusion of the rising mo-' tion of the second knife.

2. In a jacquard mechanism for a loom to weave a terry fabric having successive three pick groups of weft, each groupbeing formed in a cycle and the last weft of one cycle being'in the single card to control theposition of said terry warp for successive cycles, and means cooperating with said cardand including three knives and driving mechanism therefor to. lift one knife forthe first pick of the loom and lift the second knife for" the second pick of the loom and lift the third knife for the third pick of the m, any 715 two knives being moved to down position by said mechanism when the other knife is in high position, said means causing the warp to be in said given position atthe conclusion of the rising motion of the first knife, to be in said opposite position at the conclusion of the rising motion of the second knife andto be again in said given position at the conclusion of the rising motion of the third knife.

3. In a jacquard mechanism for aloom to weave a terry fabric having successive three pick groups of weftfeach group being formed in a cycle and the last weft of one cycle being in thesame shed as the first weft of the succeeding cycle and having a warp to be in a given position for the first and third picks of a cycle and in the opposite position for the secondof said three picks, a control shaft for the jacquard having a rotation once for every third pick of the loom, a card cylinder to be moved to indicating position with a single card in indicating position,

I means onthe shaft to move the cylinder to indicating position every third pick of the loom to move thesame card to indicating position for successive cycles, threeseparately movable lifting knives, means on the shaft to cause the knives to lift one at a time, one for each pick of the loom, andmeans controlled by the card and cooperating with the knives to place the warp in said given position at the end of the liftingmotion of the first knife and place said warp in the opposite position at the end of the lifting motion of the second knife and place said warp again in saidgiven position at the end of the lifting motion of thethird knife, whereby a same shed as the first weftof the succeeding cycle and having a warp to be given two weaving positions, three separately movable knives, means to give said knives a cycle of movements to be completed in three picks of the loom and during which each knife rises for one pick of the loom, a card cylinder carrying a card, means topresent the cylinder and cardto indicating position for every cycle of theloom, and means controlled by the card when in indicating position and actuated by the knives to place said warp in one position at the end of the rising motion of one of theknives and to place the warp in the other position at the end of the rising motion of the g second knife and return the warp to the first position thereof at the end of the rising motion of the third knife. I I 5. In a jacquard mechanism for a loom to weavea terry fabric having successive three pick groups of weft, each group being formedin a cycleand the last weft of one cycle being in the same shed as the firstweft of the succeeding cycle and having a warp to be given two different positions in each cycle, two jacks to control the position of the warp, a needle tocontrol the jacks, asingle card to position the needle and jack forthe three picks of a cycle, means to raiseoneof said jacksto,place the warp in one position for the first of said three successive picks and raise the other jack on the third of said three successive picks to place the warp in said one position, and the needle and means cooperating to leaveboth jacks unmoved to locate said warp in the otherposition for the second of said three successivepicks.

6. In a jacquard mechanism for a loom having a warp to be in a given position, on the first pick of the loom, in the opposite position on the second pick of the loom and again in the given position on the third pick of the loom, a single card to control the position of the terry warp, and means cooperating with the card and including two lifting jacks one with a single hook and the other with a double hook and three independently moving knives, one for each hook, to place said warp in said givenposition when one of the knives has completed its lifting motion and to place said warp in the opposite position when the second knife has completed its rising motion and again place the warp in said given position when the third knife has completed its rising motion.

, '7.In a jacquard mechanism for a terry loom, three independently movable knives each having a cycle of movements extending through three successive picks of the loom and each knife to be moving up while another knife is descending and a third knife is dwelling in low position, a pair of terry warpc ontrolling jacks one having one hook for one knife and the other jack having two hooks one for each of the remaining knives, a needle to position the jacks, a card to position the needle, means to move one of the knives up for the first pick and in engagement with one of the jacks to elevate the same, means to move the second knife up as the first knife descends and out of engagement with any hook to permit the first knife to lower the jack in engagement therewithfor the second pick, of the loom, means to raise the third knife to engage one of the hooks of the; other jack to raise the same for the third pick of the loom, and means by which said jacks jointly control aterry warp thread.

8. In a jacquard mechanism for a loom, three knives, driving mechanism for the knives to lift the knives one at a time during a pick of the loom. andrequiring three successive picks of the loom to raise all three knives, said driving mechanism requiring one knife to rise while the second knife descends and the third knife remains at rest in low position, a pair of lifting jacks, a hook formed on one of the jacks to engage one of the knives, a pair of oppositely extending hooks on theother jack for engagement with the second and third knives, said second and third knives being separated by such a distance that one only of said knives can engage a hook of the second jack at a time, means to cause the jacks to have joint control of a warp, a needle to position both jacks simultaneously, and a single card to determine the position of the needle, saidcard and needle capable of positioning the first hook of the first jackfor engagement with the first knife when the latter rises and causes the hooks of the second jack to beout of engaging position with the second knife when the latter rises during,

descentiof the first knife and capable of causing one cf the hooks of the second jack to be engaged by the third knife when the latter rises, said card and needle to cause the hook of the first jack andthe hookof the second jack for engagement with thethird knife to be out of engagement with their respective knives when the other hook of said second jack is positioned for engagementwith the second knife. '9. In a jacquard mechanism for a loom having a warp to be raised one pick, lowered the next and raised the third, three lifting hooks for the warp, means to cause the warp to be raised when any hook is lifted, three lifting knives, one for each hook, means to lift the knives in consecutive order during a cycle of three consecutive picks of the loom, a knife being lifted for each pick of the loom, a card to: control the hooks, means to move the card to controlling position relatively to the hook every third pick of the loom, and means cooperating with the card and controlling the hooks to place two ofthe hooks in position to be lifted by the first and third knives to rise during the cycle to raise the warp for the first and third pick'of the loom, and said last means placing the second hook out of the path of the second knife to raise and thereby leave the warp in low position for the second pick of the loom.

10. In a jacquard mechanism for a terry loom having a reed with a three pick cycle the first two picks of which are beaten to a point spaced behind the fell while the third pick together with the other two are beaten to the fell, a pair of jacks for the jacquard both controlling a terry warp thread, one of said jacks having, a single hook and the other jack having a double hook, three knives for the hooks each having a three pick cycle, means to raise each knife while another knife is descending and the third knife is dwelling in low position, a needle to control the jacks, a card to control the needle, and means to present the card to the needle once every third pick of the loom, said needle placing two of the hooks in lifting relation with respect to their corresponding knives and placing the third hook out of lifting relation with respect to its knife.

11. In a jacquard loom for weaving terry fabrics, means requiring three successive picks of the loom to form a terry loop from a terry warp thread, two jacks both controlling the terry warp thread, one of said jacks having one hook and the other jack having two hooks, three lifting knives each having a cycle of three successive picks during which any knife rises for one pick, descends for the next pick, and dwells in low position for one pick, there always being one knife which is rising on each pick of the loom, a needle to control both jacks, a single card to control the needle, and mechanism having a three'pick cycle to present the card to the needle every third pick of the loom, said needle to place the hook or said one jack and one of the hooks of the jack having the two hooks in the paths of their respective knives while the third hook is out of the path of its knife.

v12. In a jacquard mechanism for a loom having a warp to be raised for the first and third and be in low position for the second of three successive picks of the loom, a pair of Warp lifting jacks one of which has one hook, and the other of which has two hooks, three hook engaging jack lifting knives, means. to raise one knife and lower the second knife and maintain the third knife in down position during a pick of the loom, the knives to be raised successively one. at

a time by said means and requiring three picks of the loom for'a complete cycle of operations thereof, means to raise the warp when either jack is raised, the warp to be down when both jacks are in low position, a needle to determine the position of the jacks with respect to their respective knives, a card to control the position of the needle preparatory to the rising of the first and second knives, said card and means cooperating to place the hook of the first jack outof the path of the first knife when the latter rises and acting to place one of the hooks of the second jack in the path of the second knife when the latter rises, means to move the card away from indicating position with respect to the needle subsequent to engagement by the second knife of the hook therefor, and said second knife and first hook of said second jack cooperating to hold the second hook of said second jack out of the path of the third knife when the latter rises While the card is out of indicating position with respect to the needle.

13-. In a jacquard mechanism for a terry loom to weave a terry fabric. having successive three pick groups of weft, each group being formed in a cycle and the last weft of one cycle being in the same shed as the first weft of the succeed ing cycle and having a terry warp to be raised on the first and third picks of each cycle and be in low position for the second pick of each cycle, said three picks constituting a terry forming cycle, a single card to control the position of the terry warp for the three picks of each cycle, means including three knives and mechanism to raise the knives one at a time and one for each pick of the cycle and-in such order as to raise the terry warp on the first pick, lower said terry warp on the second pick and again raise the terrp warp on the third pick, and a multiplier to maintainthecard in control of the jacquard throughout a succession of three pick cycles of the jacquard.

14. In a jacquard mechanism for a terry loom to weave a terry fabric having successive three pick groups of weft, each group being formed in a cycle and the last weft of one cycle being in the same shed as the first weft of the succeeding cycle and having a terry warp to be raised on the first and third picks of each cycle and be in low position on the second pick of each cycle, said three picks constituting a terry forming cycle, a series of cards, card feeding means to advance said cards to active position every third pick of the loom, mechanism between the cards and the terry warp including three knivesto be raised one at a time-and one for each pick of the loom together with mechanism controlled by the card and actuated by the knives to control the position of the terry warp, said knives and mechanism effective to raise the terry warp on the first pick of each cycle, lower said terry warp on the second pick of the cycle and again raise-the terry warp on the third pick of the cycle, and multiplying mechanism controlling the first named means to arrest the feeding of the cards and maintain one card in active position throughout a period of successive three-pick cycles.

15. A mechanism as set forth in the foregoing claim 13 wherein a part of the jacquard having a regular motion every third pick of the loom actuates the multiplier.

16. A mechanism made according to claim 13 in which there is a controllingfeed for the multiplying mechanism deriving its actuating force from a knife which is rising during the time that the card'is in indicating position, whereby the feed mechanism for the cards is out of contact with the cylinder and therefore free to respond to the control exercised by said knife.

HERBERT V. FOSTER.

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