US2179328A - Single cylinder stationary griff jacquard - Google Patents

Description

Nov. 7. 1939. H, v FOSTER' 2,179,328

SINGLE CYLINDER STATIONARY GRIFF JACQUARD Filed oct. 12, 19:59 s sheets-sheet 1 o 11;q-I-a Inventor Herbert V. Fuster Attorney Nov. 7,

H. v. FOSTER l M9328 SINGLE CYLINDER STATIONARY GRIFF JACQURD Filed Oct. l2, 1938 3 Sheets-Sheet 2 M s M s n '5 H N 5 M s s m 5 m E M H M N Km/@miur Herbert V. Fossi-er Attorney H. V. FOSTER 2,1 7,328

SINGLE CYLINDER STATIONARY GRIFF JACQUARD l Filed om. 12, 193s s sheetssheet s Inventos* Herbert. V. utev l hij Patented Nov. 7, 1939 PATENT OFFlCE SINGLE CYLINDER vS'IAJIIONATRY GRIFF .TIACQUAIRD` Herbert V. Foster, Providence, R. I., assigner to Crompton t Knowles Jacquard t Supply Company, Fawtucket, E. I., a corporation of Massa-` chusetts Application October 12, 1938, Serial No. 234,647

' 6 Claims.

This invention relates to improvements in jacquards for weaving double fabrics and it is the genera-l object of the invention -to provide a jacquard of this type to be operated by a single cylinder.

Double fabrics such as plush, mohair, etc., are commonlywoven double, that is, two separate ground webs are woven in spaced relation with the pile tuft yarns extending `between them.

i After the weaving operation the fabrics are cut apart so that each will have a piled surface. When weaving such a fabric with two shuttles it is necessary to have three sheds. rlhe upper shed contains part of the ground warps of the "l upper'fabric and some of the pile warps on certain of the loom beats, the middle shed contains the lower warps for the upper ground fabric as well as the upper warps for the lower ground fabric, and may also have pile warp therein during certain of the beats of the loom. The lower shed is similar to the top shed and contains the bottom ground warps for the lower fabric and at` times will contain some of the pile yarns. One of the shuttles passes over andthe other under `the middle shed and are both picked simultaneously so that the loom lays two shots of lling at the same time.

When plain or uniigured fabric is to be woven a simple harness motion may be employed to produce either the so-called V-weave or W-weave. In the V-Weave the pile warp passes `from the top to the bottom shed or vice versa every beat of the loom and although such a weave gives a dense pile surface, yet the pile tufts are not held in place very tightly. In the W-weave, on the other hand, the tuft yarns are interwoven with the top and bottom ground webs and cross from one fabric to the other only every third beat of the loom, the two additional picks beyond that i` Vemployed in the V-weave serving to bind the pile tufts tightly in position for the production of a more durable fabric. j

`When it is desired to figure a fabric of either type to produce tufted areas alternating with 1 blank or plain weave areas the tuft yarns will be interwoven with the ground webs to produce the plain areas and will be crossed from one fabric to the other to produce the tufted areas.' Although figures may be produced on either the V- .for theW-weave I have chosen toillustrate my invention in connection with `the latter type `of fabric. j

In the shedding of theseveral warps to produce the W-Weave two conditions will ordinarily exist,

either all of the tuftyarns will be in the top and l bottom sheds at the same time with none in the middle shed, or the tuft yarns will all be in the middle shed. To meet these two conditions ina jacquard it is necessary to have oppositely moving griifs for the rst condition or a stationary griff to hold the tuft yarns in the middle shed for the second condition. It is another object of my invention to meet these two conditions by controlling the tuft yarn destined for instance for the upper fabric by a pair of uprights and the tuft yarn destined for the lower fabric by a second pair of uprights and controlling both of these pairs by two needles positioned by a single card.

It is a further object of my invention to provide a jacquard wherein one group of uprights are normally positioned for engagement with their griifs while another group are normally out of position for engagement with their griffs and controlling both groups by needles cooperating with one card in such a way that one group controls the pile yarn in one web of the double fabric While the other group controls the pile yarn in the other web.

It is still another object of my present invention to provide a jacquard wherein the uprights are arranged in pairs, the members of each pair being connected to a common neck, together with an arrangement of grii's whereby certain Vpairs are normally positionedto engage the griifs while other pairs are out of normal engaging position with 'their griffs, to provide a single needle which will control one member of a pair normally positioned for engagement with its griifs and also control a member of another pair which is normally out of engaging position with its griffs. By using two needles which jointly divide their control between the members of two separate pairs of uprights, one normally positioned for engaging griffe and the other normally out of griff engaging position, I am enabled to dispose the pile yarns either in the top, middle, or bottom shed of the loom.

It is a further object of my invention to provide a jacquard having pairs of uprights as already mentioned in which a single needle will control the upright of one pair that normally cooperates with a moving griff and also an upright of another pair arranged for cooperation with a stationary griff.

`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 accompanying drawings, wherein a convenient embodiment of my invention is set forth,

Fig. 1 is a front elevation of a jacquard together with the operating drives therefor derived from the loom,

Fig. 2 is a vertical section on line 2-2 of Fig 1,

Fig. 3 is a diagrammatic view on a scale somewhat larger than that shown in Fig. 1 of the cylinder, set of needles controlled thereby, and pairs of uprights divided into two groups one of which is for the upper fabric and the other of which is for the lower fabric on any given pick of the loom.

Fig. 4 is a diagram showing the weave of the so-called W-type, with a patterned area inclicated,

Fig. 5 is a diagrammatic view of the double shed and two shuttles used in weaving the fabric produced by the use of my invention, and

Figs. 6 to 11 are diagrammatic views showing the successive steps in the production of a crossing of the tuft yarns, each figure showing diagrammatically the card and the weave produced thereby together with the intermediate needles, uprights and connections between the latter and the tuft yarns.

In the accompanying drawings the jacquard J is supported on timbers 2i) mounted on uprights 2| which may be supported by the floor at a suitable distance above the loom not shown. The jacquard has side plates 22 in which slide vertical guides 23 supporting a frame 24 carrying a set of movable griff blades M. The latter are actuated by a lever 26 pivoted at 21 and having the right end thereof attached by a connector 28 to a crank arm 29 rotating with the top shaft 30 of the loom making a revolution every beat of the loom. The left end 3| of lever 26 is attached by connector 32 to the frame 24 and the griffs M therefore rise and fall once for each loom beat.

A bottom movable plate 35 is guided by slides 36 also movable in the jacquard frame and derives its motion from a lever 31 pivoted at 38 and having the right end thereof connected by link 39 to another crank arm 40 rotating with the shaft 3i). The left end 4l of lever 31 is attached by connector 42 to the plate 35 the connectors 29 and 40 lie on opposite sides of the shaft 3D and as the left ends of the levers 26 and 3l move in opposite directions the griffs M and the movable plate 35 will move vertically in opposite directions.

Fixed to the jacquard side plates is a frame 45 carrying a set of stationary griff blades S which alternate with the movable grilfs M.

The card presenting mechanism C includes a cylinder 50 operating with a series of cards some of which are shown in Figs. 6 to 11. The cylinder is moved back and forth by a lever 5l pivoted at 52 and rocked by a connector 53 attached to a pin 54 on a gear 55 meshing with an equal 56 fast with shaft 30. As the latter rotates the lever 5l will oscillate to move link 5l and slide 58 connected thereto first to the right and then to the left. The left end of slide 58 is connected to the cylinder mechanism C and operates in usual manner to present a series of cards one at a time to indicating position.

The mechanism thus far described may be of common construction and operates in the usual manner to cause the movable gris M and bottom plate 35 to move oppositely in vertical directions one for each beat of the loom and to place the griifs M in low position and the plate 35 in high position preparatory to a motion of cylinder 50 to the right, Fig. 1, to indicating position.

Referring more particularly to Fig. 3 the cylinder 50 is shown in full lines approaching a set of needles designated generally at N and is shown in needle indicating position in dotted lines. The needles control uprights which are arranged in pairs twelve of which are shown in Fig. 3 and two of which are designated at I and 1I. The left and right members of each pair are shown at 6l and 62, respectively, and the two members are connected together at their bottoms by a link 63 attached to a neck cord 64. The cords hang down from the jacquard to control the pile yarns which form the tufted parts of the fabric being Woven.

In order that the relation between the needles and the uprights together with the movable and stationary griffs and movable bottom plate may be understood a brief description will be given of one type of fabric which can be woven by my present invention, the type selected being the socalled W-weave illustrated in Fig. 4.

Fig. 5 shows graphically the sheds controlled by my jacquard and associated parts. The warp threads are divided into three sheets or sheds indicated at P', P2 and U', the latter being the middle shed on which upper shuttle G runs while the lower shuttle H runs on the bottom shed. A reed K is controlled as usual to beat the shots of filling laid by the shuttles to the fell of the double fabric.

The shots of filling for the upper fabric are designated from A to AIS, inclusive, and those for the bottom fabric from B to BIB, inclusive, while the ground warp for the upper fabric is formed of two sets of threads U and U2 and the corresponding ground warps for the lower fabric being designated at L and L2, respectively. It is to be understood that the ground warps in the present instance are crossed for each pick of the loom so that the ground weave for both the top and bottom fabric will be plain and controlled by a simple harness motion not illustrated in the drawings but well understood in the art of weaving double fabrics.

Fig. 4 shows two tuft or pile forming yarns which pass from one web to the other and can be buried in either web for pattern effects for as many picks as are desired. These two threads are shown at P and P2, respectively, the piles P' being in the upper web while the piles P2 are in the lower web at the left end of the weave shown in Fig. 4. The pile threads P are shown at the left part of Fig. 4 as passing over shots of filling A and A3 and under shot A2, after which it passes to the lower fabric to form a pile. 'Ihere it lies under shots B4 and B6 and over shot B5. The pile thread P' is then returned to the upper fabric, having formed two tufts of the W-weave form and reaches a part of the cloth which is to be gured.

As shown herein a short figure is formed by interweaving pile P with two additional shots of filling of the top fabric, causing it to pass over shots A1, A9 and Al l and under shots A8 and AIU, after which said thread P is passed to the lower fabric to form pile and passes under shot Bl2. From here on yarn P is treated as it was at the left of Fig. 4. It is to be understood that the patterned area similar to that extending from shots A7 to All can be as long as desired, the number of shots involved in any patterned area being three plus an even number since two picks are required beyond the rst three which would form a W-weave to place the pile yarn P in position for passage to the lower fabric.

'I'his condi- 75 tof tionl makes rit desirable to have acard foreach pick of "thefabric 9 #In a similar'way yarn P2 will be controlled in amanner with respect to the lower shots which is the reverse of that already'described for tuft yarn P. From the showing of Fig. 4 it willbe understood therefore that whenever tuft yarn P' is over a shot of filling in one fabric for any given beat of the loom the other pile yarn P2 will be underu-the corresponding shot in the other fabric for `that samebeatyand when the yarns P move down to the lower fabric the yarns P2 are lifted to the upper fabric.

.Fig.. 4 further shows that when yarns P pass under shot A2 and yarns P2 pass over shot B2 both the pile yarns will need to be in the middle shed so that'the shuttle laying shot A2 can pass over yarns P' at tne same time that the lower shuttle `which. lays shot B2 can pass under the yarnsPZ. When the tuft yarns are to pass from one fabric to the other, however, they will need to b'e in the outside sheds, that is, after being in the top `shed to lie overshot A3, pile yarn P will then be shifted to the lower shed so that shot Bti can pass over it, and in a similarlmanner, yarn P2, being `in the low shed for the passage thereover of shot B3, will thenpass to the top shed so that shot A4 can pass under it.

`It is believed that this description taken in con- Inection with the showing of Fig. 4 will illustrate the conditions which must be met by the jacquard and the details of the needle and upright relam tionship `to be described hereinafter will be in connection` with the fabric shown in Fig. 4, but as .previously stated I do not wish to be limited nec-- 'their respective grifs to the dotted line position shown in Fig. 3 by a blank space on the card by aneedle controlwhich will be described.

L The control for the six pairs of uprights at the right of Fig; 3 is the reverse of that already `described for those at the left, the upright lil of pair II, for instance, cooperating with the stationary griffs S while upright t2 of that pair is operatedwith -a movable griff M. The uprights of the right hand group of pairs arenormally out "of vthe path of their griiis as shown in full lines in Fig. 3 so that a hole in the card will leave thern'unengaged by the griffs while a blank space in the card will move them to engaging position, such as shown in dotted lines in the center of 4rig. s.

The needles N are divided `into two groups the upper six of which control all the uprights tl of bothvgroups. The lower six needles control all the uprights 62 of all the pairs of uprights and 4the control is suchthat if the upper needle N enters a hole in the card upright tl of pair I will be raisedby a griff lVl but the upright @l of pair II will be clear of the stationary griff and can therefore descend with the movable bottom plate "535 as the latter moves down. By this control it is seen that when link t3 of pair I rises the corresponding link of pair II will descend. Since the piles P and P2 must move in opposite directions andthe uprights just described move in opposite directions, the left hand group of six uprights to which pair I belongs will lne-assigned to one of the pile yarns, such as P', while the right hand group of six pairs' including pair II will be assigned to the other pile yarn P2. In Fig. 3 the left hand group of six pairs of uprights are bracketed together and designated at L corresponding to tuftyarn P' while the right hand group are bracketed at R and correspond to the pile yarns P2; The conditions already described are those which exist when the pile yarns P and P2 are to move to the extreme shed positions and I will now describe the condition when these yarns are to reina-in in the middle shed.

When pile yarns P for instance are to pass underone of the shots of the top fabric without passing to the lower web it will be necessary to maintain these yarns in mid-shed position by engagernentof their uprights with the stationary griffe S and this is accomplished by a control exercised by the lower six needles represented in Fig. 3 by needle Nl, for instance, when that needle enters a hole in the card so that upright fifi of pair I will remain over a stationary griff S and at the saine time it will he necessary to have needle N' engage a blank space in the cardso that the associated upright Eil can move clear of its griff M to the dotted position shown in 3. Under these conditions the link 63 will remain in mid-position.

Since it is necessary also to have the pile yarn the mid-shed at the same time, the needle Nl, by entering a hole in the card as already stated, will allow the upright 62 of pair II to clear its rising griff M, but the needle N striking a blank part of the card, will push upright lil of pair II to the dotted position of Fig. 3 over a stationary griff and the link E53 which is controlled thereby will therefore remain in mide-position. By this control, therefore, it will be seen that both the pile yarns P and P2 are maintained in the mid-shed at the same time.

With the relationship between the needles and the uprights already .described the operation of the jacquard for several successive picks will be described in connection with Figs. 6 to ll. In each of these figures the card controlling the particular pick illustrated is at the top of the figure and the weave at the bottom, while the needles and upright connections are between. The showing is diagrammatic andit will be understood that the card will actually lie against the right vertical face of cylinder 5t. The cards are designated at C to Ct, inclusive, in Figs. 6 to ll, respectively, and will be presented one after another, a different card being used for each pick of the loom.

In Fig. 6 the pile yarns P andf'f are in the top and bottom sheds, respectively, since they pass over and under shots A' and B', respectively. Card C will therefore be punched at lll for needle N so that the rising griff M will lift upright lil of pair I controlling pile P and at the same time allow upright lil of pair II to remain away from its stationary griff. Upright ti? of pair II, controlled by needle Nl, must be free to descend with plate 35, hence card C is punched at 'll to leave needle Nl unmoved. Uprights (il of pair I and lil and bl of pair II therefore rise and fall, respectively, to place the pile yarns P up and P2 down. Filling shots A and B .are then laid and beaten up, thus concluding the first pick.

0n the next or second pick illustrated in Fig. 7 it is necessary to have all the pile yarns in the middle shed, a condition which is accomplished by having the uprights for the stationary griffe hooked thereon and the hooks for the movable griifs clear of the latter. Card C2 will therefore be left blank at 'I2 for needle N' the effect of which is to push the needle to the right, thereby moving upright 6i of pair I to the dotted position of Fig. 3 out of the path of its rising griff M and at the same time moving upright 6I of pair II over its stationary griif as shown in dotted lines in Fig. 3, thus providing for holding pile P2 in the middle shed. In order that the upright 62 of pair I may remain in its normal position over its griff S to place pile yarn P in mid-shed position, card C2 will be punched at 'i3 for needle N1 and the latter will therefore remain unmoved. This also permits upright S2 of pair II to remain out of the path of its rising griff, or in the full line position shown in Fig. 3. The griifs M therefore rise without lifting upright 6| of pair I or upright 52 of pair II and the bottom plate descends, carrying with it upright 62 of pair II. The link 63 at the bottom of pair II, however, is held up by upright 6I of pair II. At the proper time in the cycle of the loom shots A2 and B2 will be laid and beaten up, thus concluding the second pick.

On the third pick shown in Fig. 8 the pile yarns PI and P2 must be in the top and bottom sheds, respectively, as was the condition for the first pick, and card C3 will be punched at 'M for needle N and at i5 for needle N'I. The conditions on this pick are as they were in the first pick and shots A3 and B3 are laid and beaten up to finish the third pick.

On the fourth pick, see Fig. 9, pile tufts are to be formed and this condition requires that pile yarn P pass from the top to the bottom web and that pile yarn P2 be raised from the bottom to the top web. This condition requires that both uprights of pair I shall be free to descend with bottom. plate 35 and that upright 62 of pair II shall rise. Accordingly, card C4 is left blank at 'f6 to push needle N to the right, thereby moving upright 6l of pair I out of the path of its rising griff M while at the same time moving upright 6l of pair Il over its stationary griff as shown in dotted lines in Fig. 3. Card C4 is also made blank at 'll for needle Nl to move the latter to the right and thereby move upright 62 of pair I away from its stationary griff to the dotted position of Fig. 3 and at the same time place upright 62 of pair II over its rising griff M, as shown in dotted lines in Fig. 3. These conditions permit both the uprights of pair I to descend with bottom plate 35 at the same time that upright 62 of pair II is raised by its griff M. As a result of the relation described the neck cord controlling pile yarn P and corresponding to the pair I of uprights descends to place pile yarn P in the bottom shed, while the neck cord of pair II rises to lift pile P2 to the top shed. After this reversal of the pile yarns shots All and B4 are laid and beaten up to complete the fourth pick and the first pile forming beat of the loom.

On the fifth pick of the loom, see Fig. 10, it will be necessary to have the pile yarns in the middle shed supported by the stationary griifs. Card C5 is left blank at 18 to push needle N to the right so that upright 6I of pair I will not be raised by its lifting griff M and at the same time upright 6I of pair II will be moved over its stationary griff as shown in dotted lines in Fig. 3, thus supporting pile yarn P2 in mid position. Card C5 is punched at 19 for needle Nl, causing upright G2 of pair I to remain over its stationary griff in the full line position shown in Fig. 3 and allowing upright 62 of pair I to remain out of the path of its rising griff M. The neck cords of both pairs I and II are therefore supported by the stationary griffs and upright 6| ofv pair I is clear of the rising griifs, hence operative movements of the gris M and bottom plate 35 leave the pile yarns unmoved or in mid position so that shots of filling A5 and B5 can be laid over and under pile yarns P2 and P, respectively. These shots are then beaten up to conclude the fifth pick. It will be noted that although the pile yarns have been reversed with respect to their webs, card C5 is nevertheless identical with card C2 so far as the punching and blank spaces for needles N1 and N are concerned.

On the sixth pick, see Fig. 11, pile P2 is to be` in the top shed while pile P is to be in the bottom shed and this condition is brought about by a blank card C6, as was the case in the fourth pick. The relations here are as described in connection with Fig. 9, and upon separation of the movable griff M and the bottom plate 35 the sheds are formed so that shot A6 can be laid under piles P2 and shot B6 over piles P', respectively, concluding the sixth pick.

On the seventh pick the pile yarns are to be crossed to form another row of pile tufts, an operation which will return the pile yarns to their Webs of origin. To meet this condition pile P' must be in the top shed while pile P2 is in the bottom shed. This was the condition which existed on picks I and 3 described in connection with Figs. 6 and 8, respectively, and the relations set forth in connection with those gures will therefore be repeated for this seventh pick, the new card being punched for both needles N and N1. Shots of lling A1 and B1 are then laid as suggested in Fig. 4 and exactly the same conditions exist as those present at the conclusion of the rst pick.

In the present description it is assumed that the patterned figure of the fabric will start with the sequence of shots beginning with A1 and B1 and for convenience in the drawings a very short gure is suggested extending from the shots just named to shots Ai l and BI I. The Weaving of the shots corresponding to the patterned effect will be the same as that described for shots A and B of the first pick and A2 and B2 of the second pick, the conditions of Figs. 6 and 7 alternating with each other. At the end of the patterned area the weaving of pile tufts will be resumed, at which time the conditions described preparatory to laying of shots A4 and B4 will be created, the card which terminates the patterned area being similar to card C4. Thereafter weaving of tufts of the W-weave type will continue in a manner similar to that already described in connection with the left hand part of Fig. 4 until another patterned area is reached by the pile yarns P and P2.

The foregoing description has been given in connection with one pile yarn P and one pile yarn P2 together with the pairs of uprights which control these pile yarns. It is to be understood of course that the jacquard Will have a large number of pairs of uprights, those lying in the group designated at L in Fig. 3 being treated in a manner similar to the treatment described for pile yarn P' While the other pairs in group R are treated as are the pair II. It will further be understood that the jacquard will have a large number of needles corresponding to the twelve set forth in the drawings and that the upper six rows of needles will control the uprights 6l of yto lower the uprights.

withfthe shots of filling as set forth am'notnecessarily restricted to this arrangement inasmuch as the pile yarns can be floated on the outsides of the two webs, in which case the pile yarns can be called into action by the jacquard of anybeat of the loom subsequent to the laying of fthe'three which make up a single tuft of the W- `weave type.` For instance, the pile yarn P', inf stead of vlying yunder pick Alt as set forth in Fig.

4, could lie over this pick and then pass to the opposite web to lie under pick Bil. It is not thought necessary to illustrate this variation since the floating of warp threads over two or more picks of filling is well understood. In car- `rying my invention into effect therefore I wish it to be understood that I am `not necessarily limited to the order of interweaving the pile yarns earlier in this description. f

From the foregoing it will be seen that I have provided a jacquard wherein the indicationsv for two separate groups of pile yarns are controlled by a single cylinder. It will further be seen that a single needle controls one member of each of "two pairs of uprights, one of the pairs controlling one ofthe pile yarns while the other of the pair controls the other pile yarn. It will further be seen that the relationshipbetween the needles and uprights is such that the two systems of pile yarns can either be moved to the middle sie `shed or one system can go to the top shed while lthe other is placed inthe lower shed by a relationship in which the `pairs of uprights are so controlled that an indication that one system of pile yarnsuis to be lifted occurs simultaneously with" a "control exercised by the same needles requiring the other system of pile yarns to descend. This control is obtained by having a part of the uprights normally positioned for engagement with certain of the rising and the stationary griffs while other of the uprights are normally out of position for engaging their respec* tive rising and stationary grifs, the uprights being divided into two groups with respect to their normal relation relatively to the griis andr each needle controlling an upright of each group.

Having thus described my invention it will be `seen that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to belimited to the details herein disclosed, but what I claim is:

1. In a jacquard mechanism for a double fabric loom, a set of ascending grifis, a set of stationary grills, a pair of uprights normally in position for engagement with the ascending and stationary griffe, a second pair of uprights normally out of position for engagement with the ascend ing and stationary griifs, a needle controlling the upright of the first pair normally positioned for engagement with the ascending grii and also controlling the upright of the second pair normally positioned out of engagement with the stationary griff, a second needle to control the other upright of the first pair of uprights normally positioned to engage the stationary griff and also controlling the other upright of the second pair of uprights normally out of engaging position with respect toA the ascending grids, means `to lower the uprights of either pairwhen both `uprights of the pair are out of engagement with the griiisduring theshed `forming operationV of the loom, a single card to control the position of the needles on a given beat of the loom and two separate yarns one controlled by the rst pair of uprights and the otheryarns controlled by the other pair of uprights.` K i 2. In a jacquard mechanism for a double fab-2" ric loom, a set of lifting grifis, a set of stationary griiis, a pair of uprightsfhaving hooks extending in one direction and normally positioned for er1- gagem f. with the lifting and` stationary'griis, a

second pair of uprights havinghooks pointing inf..-

the oppositefdirection and normally out of engaging position with respect to the lifting and stationery griifs, a needle to control the upright of the inst pair which cooperates with the lifting gri and also the upright'o'f the second pair'i.

adapted iorcooperation with a stationary griii, asecond needle to control the other upright of the .first pair and. also the other upright of the second pair, a single card to'determine the posim tion of the needles on a given beat of the 1oom, lowering means to cause descent of either pair when both uprightsof a pair are out of engagement with the stationary and lifting griffs during a shed forming' operation of the loom and two warp threads one of which is controlled by` the first pair of uprights and the second ofwhich is controlled by the second pair ofuprights.

A 3. In a jacquard mechanism for a doubleifabric loom having two warp threads, a pair of uprights connected to one of the warp threads, a2

second pair of uprights connected to the other warp threads, lifting griff Ameans normally effec- 'tive to lift `one upright of one pair and clear both uprights ofthe second pair, stationary griff means normally positioned to engage the up= right of said one pair and normally out of en- `g'aging positicnwith the other upright of the `second pair, means to'lower either pairof up rights when both members of the pair are unsupported by the lifting and stationary griff means, a needle to control the upright of the first pair in cooperating with the lifting griff means and also the upright of the second pair adapted for cooperation with. the stationary griff means, a second needle controlling the other uprights of said pairs7 a single card to position said means on any given beat of the loom, and means to cause the lifting griff means to ascend and the lowering means to descend on a shed forming ope-ration oi the loom to position the warp threads.

Il. In a jacquard for a double fabric loom having top and bottom warps, a set of pairs of uprights having hooks pointing in one direction, movable griis to cooperate with an upright of each pair, stationary griffs to cooperate with the other upright of each pair, the uprights of said set normally positioned to cooperate with said griiis, means to connect the uprights of each pair in the set to one of the warps, a second set of uprights having hooks pointing in an opposite direction, an upright of each pair of the second set to cooperate with the movable griff, the other upright of the pairs of the second set to cooperate with the stationary griff, the uprights of the second set of uprights being normally out of engaging relation with the griffs, means to connect the uprights of each pair in the second setof uprights to the other warp, a set of needles to control the uprights of the first set of pairs which cooperate with the movable griff and also the uprights of the second set 'of pairs which cooperate with the stationary griff, a secondset o-f needles to control the uprights of the rst set of uprights which cooperate with the stationary griff and also the uprights of the second set of pairs which cooperate with the movable griff, and a second movable griff to lower any pair of uprights out of supporting relation with respect to the movable and stationary griffs.

5. In a jacquard mechanism for a double faloric loom having top and bottom pile warps, a set of pairs of up-rights having upper hooked ends all pointing in one direction, a movable griff to ascend from a normally down position during a shed forming operation, said hooked ends of one upright of each pair being normally positioned for engagement with a part of said movable griff, a stationary griff normally positioned for engagement with the other upright of each pair of uprights, a second set of pairs of uprights having-hooked ends pointing in a direction oppo- Isite from the hooked ends of the first set, the

hooked ends of the second set normally being out of engaging position with respect to the movable and stationary griffs, one upright of each pair being capable of engagement with the movable griff while the other upright of each pair is capable of engagement with the stationary griff, means to connect the pairs of one set with the top pile warp and connect the pairs of the other set with the bottom pile warp, a set of needles to control the uprights which are normally capable of cooperating with the movable griffs and also the uprights normally out of engaging position with respect to but adopted for engagement with the movable griff, each needle ofthe set controlling one upright of the rst set of uprights and -one upright of the second set of uprights, and upright supporting means to descend from a normally high position as the movable griff ascends from its normally down position, said supporting means to support any pair of uprights `both members of `which are "outof =en gagement with the moving or stationary g'riffs during a shed forming o-peration lof the loom.

6. In a jacquard mechanism for a double -fabric loom having top and bottom pile warps, aset 'of pairs of uprights for the top pile warp, movable griffs to rise from a normally down posi- 4tion during a shed forming operation, a stationary griff, one upright of each pair of uprights normally positioned for engagement with the rising griff and the other upright of each pair normally placed for engagement with the stationary griff, a second set of pairs of uprights for the bottom pile Warp, one upright of each pair of the second set normally out of engaging position with respect to but movable into position to'cooperate with the movable griff and the other upright of each pair normally out of engaging position with respect to but movable into engaging position with respect to the stationary griff, a descending griff to move down from a normally up position during a shed forming operation and lower any pair of uprights both uprights` of which are disengaged from the movable and stationary griffs, a set of needles, each needle to control an upright of the first set which is capable of cooperation with the movable griff and also control an upright of the second set of uprights which is capable of cooperation with means to position the needles of both sets of?V needles simultaneously.

HERBERT v. FOSTER.

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