US1764574A - Art of weaving - Google Patents

Description

June 17, 1930. w NICOLET 1,764,574

ART OF WEAVING Filed Dec. 1925 8 Sheets-Sheet l W. NICOLET ART OF WEAVING June 17, 1930.

Filed Dec. 7, 1925 8 Sheets-Sheet 2 m FWHI WMI m a v onou ona 93- 33 June 17, 1930. w. NICOLET ART OF WEAVING 8 Sheets-Sheet 3 Filed Dec. 1925 Q Q Q i w. NICOLET ART OF WEAVING June 17, 1930.

Filed Dec. '7, 1925 8 Sheets-Sheet 4 I J mw Nu June 17, 1930. w co 1,764,574

ART OF WEAVING Filed Dec. '7, 1925 8 Sheets-Sheet 6 H 7 June 17, 1930.

w. NICOLET 1,764,574 ART. OF WEAVING 7 Filed Dec. '7, 1925 v s Sheets-Sfieet 7 w. NICOLET ART' OF WEAVING Fild Dec. '7, 1925' 8 Sheets-Sheet 8 I "H ll I" W ill II III ll llllill i Iilllllllil iii:

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ll lllllllll lllllllli H Patented June 17, 1930 OFFI E wanna mconn'r, or nmrzre, GERMANY I ART WEAVING' Application filed December Z, 1925, Serial No.

My invention refers to the art of weaving and it particularly concerns means whereby the speed .of; weaving and in accordance therewith the quantity 'of woven fabric produced per unitof time arematerially' 1ncreased. These means comprise im rovements in looms, which will be describe more fully hereinafter.

In the looms hitherto in use, the warp threads extend from the warp beams in one direction close together to the leaves and the mounting-and acrossthem= and the reed to 'the' woven fabric. By raising part of the warp threads and lowering the rest, a shed is formed in which the weft is inserted by the shuttle. The thread of the weft is then set on the fabric by swinging the reed and is ,tiedup by changing the shed, whereupon the same procedure is gone through anew.

. The present invention is desi' nod to materially increase the output of a 00m of this kind. In accordance with this invention one part. .of the warp threads is placed at an angle to the rest of the threads in front of 2 the path described by the shuttle in such manner that the two'groups of warp threads form a second shed which is not chan ed in this'place and into which while the s uttle is driventhrough the ordinary shed, a second shuttle is driven which also inserts a weft. T The reed. customaril employed for casting the weft onto the abric is preferabl replaced by' combs.-

Iii the drawings aflixed to. this specification and forming. an; thereof the new meth- 0d of weavin an a loom embodying-myinvention "are i lustrated diagrammatically by waiy of example. I n the drawings Figs. 1 'and,2 are diagrams illustrating different positions of the. warp threads as arranged in accordance with thls invention. 7 Fig. 3 is a diagram illustrating a piece of fabric manufactured inaccordance with the novel method.

- Fig. 4 is a front elei ation and Figl5 is a rear elevation, with some parts broken away, of the loom. Fi 6 is. a cross-section-on the line VI-VI in F g. 4 drawn to a larger scale.

73,718, and in Germany meeme r 13,19

i 7 is a front elevation of one. of the shutt e boxes a'rr'angedat the endsof the machine, drawn to a larger scale also.

Fi 8 is a cross-section on the line VIII- VII inFig. 7 and f I Fig. 9 is a perspectiq'y'ie view showingin a I diagrammatic mannerE- andat a lar er scale the way of inserting 'the weft int e shutt e.

Fig. 10 is a diagram of connections illus, trating .electric means for controlling the operation of the'shuttles in order to avoid Y tearing of the threads. I

Referring first to Figs. 1 and 2 of the drawings" 1 and 2 aretwo warp beams disposed at "different levels,'one above the other, and 3 and 4 are the two groups of warp threadswound u onthese beams. The warp threads 3 exten xthrou h eyes 5 formed at the ends of the teeth 0? a comb 5, the warp threads 4 through eyes 6-at the ends of the teeth of a comb 7, this latter being positioned to. the rear of comb 5-viewed in the direction towards the fabric. The warp threads 4.- extending through comb 7 are so guided that they extend at an angle to the warp threads 3 1n front of comb 7. This is obtained by the .positioningof warp beam 2 at a higher level than warpbeam 1. However, if both groups of warp threads are arranged on a single war beam, the same eflect can be obtained by; eading the warp threads 4'over guide sheaves disposed above the warp threads 3.. a

The two groups of threads thus permanently formin front of comb 7a shed which is open towards'the warp beams 1 and 2. Comb 5 and, if-desired,also comb 7 are movable in the vertical direction. In the lowermost position of comb 5, the warp threads;3 extend some distance from the war threads 4.underneath the eyes of comb 7. n this osition ofthe threads the shed spoken'of above is open down to theifabric 8. a. If, however, the warp threads 3- are 95 raised by comb 5, they enter into thezgaps of comb 7, (which may at the same time move-in thedirection towards comb 5) and the groupsof threads 3iand 4 are thus caused to cross, whereby another shed is formed to 'wefts which ma "shuttles travelling between guides.

the rear of comb 7 (Fig. 2). According to the present invention a weft thread is passed simultaneousl through each of these sheds, a shuttle 9 ig. 2) introducing the weft 11, the shuttle 10 the Weft 12. Shortly before the war threads 3 are lowered and the warp threa s 4 raised from the osition shown in Fig. 2, the weft 11 entere in the shed to the rear of comb 7 is cast onto the edge of the fabric 8 by a reed 13. By lowering the warp threads 3 and, if desired, raising the threads 4 the shed formed to the rear of comb 7 is opened, the weft 11 which had been cast onto the fabric being now tied up by the warp threads 3 and 4 which now cross directly in front of this weft. On the warp threads 3 having sumed their lowermost positlon and the threads 4 their highest position (Fig. 1) the. shed formed between the comb 7 and the warp beams is now opened towards the fabric 8. Theweft 12 entered into this shed has been moved during themovement of combs 5 and 7 by a fork 14 up to the level of comb 7 and after the shed has been 0 ened towards the fabric 8, it is cast onto the abric by means of a separate reed 15 moving past and underneath comb 7. The tworeeds 13 and 15 must be operated in such manner that the first reed does not form an obstacle to the casting on of the second weft by the other reed 15. Reed 13 must be caused to move its weft in contact with the fabric at the moment when the groups of threads 3 and 4 are caused to cross; the same holds ood for weft 15, or else the sheds would not be cleared for the next succeedin weft. As the warp threads 3 are raised agam from their positlon shown in Fig. 1, the war threads 4 being at the same time lowered if desired, they will act towards t ing u the weft 12 when crossing the three s 4 an once more forming a shed to the rear of comb 7.

Y While the shed formed to the rear of comb '7 is alternately formed and opened, the shed infront of the comb is ermanently formed, bein alternately close or opened by the com 7. By simultaneously entering two be formed of a single thread or of a p urality of threads, in two juxtaposed sheds the out ut of the loom is increased corresponding y.- Moreover the edge portiom of -,the, fabricis firmly tied up b the weft 12' inserted in the always open sli ed, as .can be seen by inspecting Fig. 3, which illustrates a fabric produced in this manner and in which two weft threads have been entered in each shed at each operation, these weft threads being taken from stationary bobbins.

The bobbins as well as the shuttles may be formed in a different manner. I can either use freely travelling shuttles or I- can again asweave with weft material disposed in the shuttles or I can employ weft material taken fromstationary bobbins. This latter mode of proceeding is preferable inasmuch as in this case the shuttle can be kept materially lower and inconsequence thereof the shed may be kept lower also. However, this can only be done provided that the character and purpose of the fabric admits of it. The shuttles can be moved by means of drivers, springs or in an other suitable way.

In the loom il ustrated in Figs. 410 and which is adapted for carrying out my novel method of weavin stationary bobbins 16, 17, 18 are provided and both shuttles 9 and 10 move between guides 19 and 20 respectively. The guiding means 19 provided for shuttle 9 are formed by two parallel rails 19 and 19 located close together and hinged to each other by their upper edges, these rails carrying two rows of laminae 19 disposed like the teeth of a comb. Those parts of the two rows of laminae which face each other are provided with indentures cooperatin with each other to form a guide channel for the shuttle 9 which, as shown more particularly in Fig. 9 has the form of a thin metal rod with a gripping hook 9 projecting from each end of the rod.- The shuttle 9 is actuated by a pair of strikers 22 (Fig. 7) one striker being dis osed on each side of the loom. These stri ers are placed under the action. of springs 21 and are guided in tubes 24 adjoining the shuttle boxes 23. Each striker 22 has mounted in its middle a cross pin 25 projecting on either side from a slot formed in the tube 24. Thegdriver spring on one side of the loom is placed under tension by means of an angle lever 26, the forked end of which applies itself against the cross pin 25 while its other arm is ivoted to a rod 28, the lower end of which is influenced by an eccentric disc 27 mounted on an intermediate shaft 30 (Fig. 7) driven from the main shaft 29 with one half of the speed of this latter. When the lever 26 is rocked by the rod 28 and eccentric disc 27, the striker 23 is drawn backwards, the springs 21 being at the same time compressed, and in its rearmost position the striker is locked by means of angle levers 31 with hook-shaped ends which grip the cross pin 25. The compression of the striker spring on the other side of the loom is effected by a lever 26 which is connected with the lever 26 by a rod 32 in such manner that these two levers always move in unison. When lever 26 forces the striker 22 back, lever 26' releases the striker ap ertaining to it and viceversa. During tl ie backward movement of levers 26- and 26 respectively, after the springs have been compressed, the shuttle 9 is placed in front of the striker 22 ready for striking. Shortly before the lever 26 or 26' has reached its rearmost position, its forked end meets'a, check 34 .rear end of rod 33, acts by meansiof a set screw 35 on an arm of the hook-shaped angle levers 31' which lock the striker. In consequence of this movement of rod 33 the hooks 31 i are Withdrawn, thereby releasing the cross-pin 25 and the striker 22 which is now driven forward by spring 21 and strikes the shuttle 9 so as to throw it across the guide 19 towards the opposite side of the loom. v

In order to prevent the shuttle from being thrown back when hitting the end. wall of the shuttle box 23-on the opposite side,each

box is provided with a leaf spring 36 acting towards braking the shutt e. The same springs are also active when the shuttle is nently open towards the warp thrown forward, by preventing it from prematurely separating from the striker 22, so that the force of thespring is fully utilized.

[When the shuttle is thrown from the box 23, the gripping hook 9 which is nearest to the striker 22 grips the weft 11 extending in the shuttle box across the path of the gripping hooks and pulls it in the form of a loop across the shed (Fig. 9). On the shuttle entering the opposite shuttle box the weft extended across this-box is simply moved aside by the wedge action of the outer edge of the front hook of the shuttle. However, after this hook has passed below it, the weft at once returns into its initialposition so that onthe shuttle being thrown back, it is securely gripped. by the jaw of the shuttle hook. Theweft carried along by the hook of the shuttle after this latter has passed through the shed, is pulled ofi the hook when the weft is cast onto the fabric by the reed 13. p

1 The means 20,for guidingthe shuttleflO (Fig. 6) arevformed as a tu e slotted at the bottom. The shuttle 10 has the form of a thin metal rod to which is fixed an eye. 37 extendingfoutwards through the slot. This eye 37 embraces the weft 12 taken from the bobbin 18. If, as assumed in Figs. 1 to 3, two weft threads shallbe introduced ateach operation into the shed', which is permasuch eyes 37 must be mounted on the shuttle 10 an two bobbins l8 mustfibe provided for in the loom.

The shuttle 10 is set'moving by means 7 which exactly-correspond to those provided with respect to shuttle 9. As shown in 8v they comprise a striker 22' guided n atube 24. and acted upon by a spring, thisstriker being pulled'backagainstthe action of this spring by aforked lever 38 grip ing cross pins 25 mounted on, the 'striker, w ich is locked in this position by a-hook sha ed angle lever 31". It is unlo'ckedbythe for ed lever 38" in swinging backward meeting a purpose t guide rail 19 for shuttle 9, w ich face the beams, two" the check, whereby the rod releases the lever 31 by means ot a set screw Lever'38 which. serves for compressing the springs acting on the shuttle 10 is directly coupled with the lever-s26 and 26' serving for compressing the springs acting on theshuttle 9. j The raising and lowering of the warp threads 3 isefifected in this loom by means of laminae 40 extending upwards from a rail 39 (Fig. 6), these, laminae replacing the-comb 5 illustrated in the' diagranis of Figs. 1 and 2. The threads 3 extend through eyes formed on the freeends of'the laminae 40. Similar means comprising laminae; which, however, should extenddownwar ds', ma be provided. for guiding the warp threa s 4, which enter between the threads 3 at a stee angle. I prefer, however, to employ foi' this 1e laminae 19 formin part of the warp beams and which need merely be a little longer than laminae 19 of the other rail 19 and need merely be provided with e es on their free. ends. Rail 39 is sus nded fromone end of two levers 41, each 0 which rests with a roller on a cam disc 42 mounted on the mainshaft 29, the cams of this disc being so shaped that rail 39 is lifted and lowered as required,whereby the warp threads are raised andlowered correspondingly. In

order to vobtain the correct guiding of the warp threads 3, I prefer fixing to the rail 39 a comb 43, through each gap of which extends a warp thread 3.' In order to form the shed nothing is required but the raising and lowering of the warp threads 3. 'In order, however, to be vable to formthe shed as uickly as possible and in order further to s orten the movement of rail 39, I prefermovingv the warp threads 4infopposition to the warp threads 3, which can-be efi'ected by lowering and'raising the rails 19*and 19, the shuttle box 23"plartaking in this movement, if necessary. 0 this end the rails 19, 19 are alsosuspended from the ends oftwo levers ,44 (Fig. 6) which are connectedby chains 46 passing over asleeve45 with levers 41 in such manner that they move in o posite directions, when the levers [are roc ed. 47 isafurther comb fixed also to lever 44 and servingifor securingYthe correct guid ingrof the warp threads. I t H c 1 he reed 13 which pushes thethreald 11 towards the fabric 'ro ects from above into the group of warp tli v 11 which has just been introduced. The reed ismov'ed; towards the fabric and after having cast the weft on is pulled backjrom between reads '3 behindthe weft cast the behind the other branch of the loop. After the weft has been introduced the distance between the two branches of the loop formed by the weft is greater than allowed in the finished fabric and for this reason the two parts of the double reed are movable relatively to each other. When entering the war they are spaced apart a distance equal to t e width of the loop, however, near the' end of their movement towards the fabric their distance diminishes so-far that the two branches of the loop when reaching the fabric assume the correct distance relative to each other. The double reed 13 is moved in such manner by the following means: the two reeds 13 are mounted at the ends of two levers 48 (Figs. 4 and 6), which are mounted for rotation llke a pair of scissors at the end of a double armed lever 49 rotatable about a fixed point of the machine frame. I The free ends of the two levers 48' are normallyforced asunder by a spring 50, so that the pair of scissors is opened and the two reeds 13 are aced widely apart. The free end of the dou le-armed lever 49 is pivoted by a rod 51 to one arm of an angle lever 53 mounted for rotation on a fixed shaft 52, the other arm of the angle lever carrying a roller which is in contact with a cam disc 54 mounted on the main shaft 29. This cam disc by actingon the lever'53, rod 51 and lever 49, causes the double reed 13 to be raised and lowered relative to the warp threads. That lever 48, the lower part of which adjoins the guide 19, is coupled by means of a link 55 with one end of a double armed lever 57 mounted for rotation about a point 56 of the machine frame, the other end of lever 57 carrying the roller 58 which contacts with a cam disc 59 mounted on the main shaft 29. During the rotation of the main shaft 29 the cam disc 59 causes lever 57 to rock, and this lever sets one of the levers 48 rocking b means of the connecting rod 55, the other ever 48 partaking in the rocking movement owing to the connection established by the spring 50. In consequence of this movement, when the double reed '13 rojects intothe grou of warp threads the lower arms of the evers 48, are pulled towards the fabric and during this movement act towards casting the weft 11 in front of them onto the fabric. If that lever 48 which is carried along by spring 50, has part of the loo in' front of it onto the fabric it is stoppe b a check 60, so that only the lever 48 whic is coupled with lever 57 by the connecting rod 55 can move on, stretching spring 50 and cancarry the part of the loop ad'oining it into the correct position close to t e other part'which has already been applied against the fabric.

After this has been effected the double reed 13 is withdrawn from between the war threads and the pair ofcoupled levers 48 1s swung back towards the guide 19 outside the warp threads. In order to lessen the distance throu h which the reed 15 is moved in casting t e weft 12introduced into the permanently open shed onto the fabric, the

side fr'om which the shuttle is struck, by the preceding bindin s so that the weft must be cast on only on t e other side. Each of the forks 14 on either side is fixed to the end of an angle lever 61, the other end of which carries a roller in contact with a cam disc 62 on the intermediate shaft 30. The two cam discs 62 are staggered 180. Inasmuch as the shaft 30 rotates onlyat half the number of revolutions of the main shaft 29, each cam disc '62' becomes operative'only during every second rotation of the main shaft 29 and the staggered position of the twocam discs has for its result that while one weft is passed through the shed, the fork 14 on I one side of the loom and duringthe assing of the next succeeding weft, the for 14 on the other side will carry that end of the weft 12 which'is not applied against the fabric into reach of reed 15.

Reed 15 projects towards the warp threads from below, it forces the weft 12 placed in front of it'towards the fabric, is withdrawn in downward direction from between the warp threads and it is carriedback into its initial position underneath the warp threads. It is mounted on one end of an anfle'lever 64 acted upon by a spring 63 an havin its angle point pivoted to the end of a ever 65 which is loose on shaft 52 and is influenced by a cam disc 66 fixed on the main shaft 29, so as to cause the reed 15 to be raised and lowered.

That arm of angle lever 64 which carries the 'reed- 15 isapplied by the spring 63 against a roller 67 mounted on the same Journal which carries the roller 58 of lever 57. On this'lever being rocked by the cam asmuch as it is arranged outside the closed shed formed by the two groups of warp threads and things can easily beset right in asmuch as this shuttle is alwaysreadily accessible; However,'if the shuttle 9 should jam it will disturb the opening of the shed and this would lead to an entangling and tearing of the warp'threads. For this reason means are providedwhereby, as long as the shuttle 9 is not at rest in the shuttle box "23, the rail 39 which moves the'warp threadsfl3, and the comb 43 mounted thereon are prevented from being lowered. These means consist of two angle levers 69, one on each side of the loom, these levers being pivoted to the machine" frame at 68 and being influenced bya spring 7 O at one end, the other end projecting below a in 71 mounted on'theleverY H which carries the rail39' and cam 43 The other end of the lever 69 is further connected with the iron -core 73 of a solenoid 72. As soon as the shuttle 9 enters the shuttle box on one side of the loom the circuit 74 '(Fig. 10) con taining the two solenoid ,coils 72 is closed, where y" the iron cores 73 I are attracted which now cause the angle "lever 69 to rock so as to release levers 41, which are now free to be lowered in accordance with the shape of the cam discsf42. The circuit is closed by means oftwo switches connected in parallel, one such switch being mounted on each side of the loom. Each switch consists of a double-armed lever 75 having a blade 76, which cooperates with a pair of contact'springs 77. spring 7 8 acting on one end of the contact lever 75 tends to normally pull theblade' 76 away from the contact springs 77. That end of the lever 75 on which the spring 8 acts, projects into the ath of the gripper'hooks of shuttle 9 in t e shuttle'box and is forcedback by' the shuttle against the action of spring 78,

whereby the blade 76 is forced in contact box on the other side, the other switch is closed. I

Obviously this electric safety device-can also be replaced by another-device, for instance a mechanical one.

The warp threads are pulled and the fabric is carried forward as usual by'thebeam 79 which is driven in a well-known manner from the main shaft 29 by a suitable gearing (not shown), and which also effects the i weavmg, com rising bodily moving'one of placing of the fabric onto the work beam intended to mean a shed adapted for a weft motions.

to be entered therein. The term shuttle A is meant to include all kindsof picking I wish it to be understoodtha't I do not desire to be limited to the exact details of e constructions shown and describedfor obvious modifications will occur to a person skilled in the art. e ,Iclaim:, e 1. The method of roducing a fabric by weaving comprising bodilymoving one of two groups ofwarpthreads alternately in one and the other direction so as to form each alternateoperation two sheds, a closed shed and an open shed to the rear of said closed shed, and passing a weft threadthrough the front shed and another weft thread through: the rear shed, before the front shed h'asbeen dissolved and beating up each weft'thread.

- 2. The method of producing a fabric by weaving comprising bodily moving one of two groups of warp 'threads alternatel in one and the other direction so as to orm in each alternate operation two sheds, a

closed shed and anopen shed to 'the rear of saidclosed shed, and simultaneously passing'aweftthread througheeach shed and beating up each, weft thread.

3. The method ofproducing a fabric by weaving, comprisingbodily moving one of two groups of warp threads extending at an' angle to each other alternatel in one and the other vdirection so as to orm in each alternate operation two sheds, a closed shed and an open shed to the rear of said closed shed, and passing a weft thread through the front shed and another weft thread through therear shed, before the front shed has been dissolved and beating up each weft thread. 4 roducing a fabriclby weaving, comprising, odily movin one of 4. i The method of two groups'of warp'threads extending at an.

angle to each other alternatel in one and the other direction so as to orm-in each alternate operation two sheds, a closed shed and an open shed to the rear of saidclosed shed, and simultaneously passing" a' weft thread through each shed and beating up each weft thread. c e

5. The method of producing a fabric by weaving, comprising bodily moving one of two groupsgof warp threads so ast-o cause the same to cross the threads of'the other group and to form'aclosed shed in front and an open shed to the rear of the crossing and passing" a weft thread throu h' the front shed and another weft threatlt rough the i rear shed, before the front shed has'been.

dissolved and beating upeach weft thread. 6. The method of producing a fabric by two groups 0 warp threads so as to'cause the same tocross the threads of the other group and to for'm a closed shed in front and an open shed to the rear of the crossing and simultaneously passing a Weft thread through each shed and beating up each weft thread.

7. A loom comprising means for bodily moving one group of warp threads so as to form in each alternate operation two sheds, a closed shed and an open shed to the rear of said closed shed and means for passing a weft thread through the front shed and another weft thread throu h the rear shed, before the front shed has een dissolved and means for beating up each weft thread.

8. A loom comprising means for bodily moving one group of warp threads so as to form in each alternate operation two sheds,

a closed shed and an open shed to the rear of said closed shed, stationary shuttle guiding means permanently arranged in said open shed and means for passing a weft thread through the front shed and another weft thread throu h the rear-shed, before the front shed has been dissolved and means for beating up each weft thread.

9. A loom comprising means for bodily moving one group of warp threads so as to form in each alternate operation two sheds, a closed shed and an open shed to the rear of said closed shed and means for simultaneously passing a weft thread through each shed and means for beating up each weft thread.

10. A loom comprising means for bodily moving one of two groups of warp threads so as to cause same to cross the threads of the other group and means for forming a closed shed in front and an open shed to the rear of the crossing and means for passing a weft thread through the front shed and another weft thread through the rear shed, before the front shed has been dissolved and means for beating up each weft thread.

11. A loom comprising means for bodily moving one of two groups of warp threads so as to cause same to cross the, threads of the other group and means for forming a closed shed in front and an open shed to the rear of the crossing and means for simultaneously passing a weft thread through each shed and means for beating up each weft thread.

12. A loomromprising means for form ing the warp threads into two groups extending at an angle to each other, means for bodily moving the threads of one group to-,

wards and past the threads of the other group and back again so as to form two sheds, a closed shed and an open shed to the rear of said closed shed, means for passing a weft thread through the front shed and another weft thread through the rear shed formed in said warp threads in consequence of such movement of said moving means before the front shed has been dissolved and means for setting the weft threads in the two-sheds onto the woven fabric.

13. A loom comprisingmeans for forniing the warp threads into two groups extending at an angle to each other, means for bodily moving the threads of one group towards and past the threads of the other group and back again so as to form two sheds, a closed shed and an open shed to the rear of said closed shed, means for passing a weft thread through the front shed and another weft thread throu h the rear shed formed in said warp thread before the front shed has been disso ved and separate means for setting the weft threads in the two sheds onto the woven. fabric.

14. A loom comprising two warp beams, means. for forming the threads from each beam into. a group of their own extending at an angle to the group from the other beam,

means for bodily moving the threads of one; group towards and past the threads of the other group and back again, means for passing a weft thread through the front shed and another weft thread through the rear shed formed in said warp threads in consequence of a movement of said moving means before the front shed has been dissolved and means for setting the weft threads in the two sheds onto the woven fabric. a

15. A-loom comprising two warp beams, means for forming the threads from each beam into a group of their own extending at an angle to the group from the other be'am,'means for bodily moving the threads of one group towards and past the threads of the other group and back again, means for simultaneously passing a weft thread through each of the sheds formed in said threads in consequence of a movement of said moving means and means for setting the weft threads in the two sheds onto the woven fabric.

16. A loom comprising. means for forming the warp threads into two groups extending. at an angle to each other. a comb with eyes" for the threads of one group movable towards and pastithe threads of the other group, a shuttle guiding rail movable in opposite direction to said comb, means for passing a weft thread through the front shed and another weft thread through the rear shed formed in said threads in consequence of a movement of said comb and rail before the front shed has been disweft threads in the two sheds onto the woven fabric and means for beating up each weft thread. 4 Y

17. A loom comprising means for for1n ing the warp threads into two groups extending at an angle to each other, a comb with eyes for the threads of one means I s in consequence of such movement of sa1d mov1n solved and separate means for setting the means for the threads guiding meansbeing shaped to conjointly orm a groove extending at right angles to fabric and means for a group of warp threads,

. group,

group movable towards and past the threads of the other group, a guide rail movable in opposite direction to said comb, means for passing a weft thread through the front shed and another weft thread through the rear-shed formed in said threads in consequence of a movement of said comb and rail before the front shed has been dissolved and two reeds movable substantially in the direction of the threads for setting the weft threads in the two sheds onto the woven beating. up each weft thread.

18. A loom comprising means for forming the warp threads into two groups extening at an angle to each other, guiding means for the threads of one group movable towards and past the threads of the other group, said guiding means being formed to also guide a shuttle, means for passing a weft thread through each of the sheds formed in said threads in consequence of a movement of said guiding means and separate means for settingthe weft threads in the two sheds onto the woven fabric.

19. A loom comprising means for forming the warp threads into two groups extending at an angle to each other, guiding of one group, said the warp threads for guiding a shuttle,

means for passing a weft thread through each of the sheds formed in said threads in consequence of a movement of said guiding means and separate means for setting the weft threads in the two sheds onto the woven fabric.

20. In-a loom comprising means for forming the warp threads into two groups extending'at an angle to eachother, a pair of cooperating combs hinged together, a row of laminae on each comb, the laminae on one comb being formed with eyes for guiding the laminae on both combs being formed in their adjoining parts with indentures combining to form a guide channel for a shuttle.

21. A loom comprising means for form-.

ing the warp threads into two groups extending at an angle to each other, guiding means for the threads of one group movable towards and past the threads of the other thread separating means rigidly combined with said guiding means, means for simultaneously passing a weft thread through each of the sheds formed in said threads in consequence of a movement of said guiding means and separate means for setting .the weft threads in the two sheds onto the woven fabric.

22. A loom comprising means for forming the warp threads into two groups extending at an angle to each other, guiding means for the threads of one group movable towards and past the threads of the other group, thread separating means rigidly combined with said guiding means, a rock lever carrying said guiding and separating means. a cam disc associated with said lever to rock same, means for simultaneously passing a ,weft thread through each of the sheds other group, means for moving the guiding I means of one group, means for connecting the uiding means of this group with those of the other group in such manner as to simultaneously move the two guiding means and groups of threads in opposite direction,

means for simultaneously passing a weft thread through each of the sheds formed in said threads in consequence of a movement of said for setting the weft threads in the two sheds onto the woven fabric.

24. A loom comprising means for forming the warp threads into two groups extending at an angle to each other, separate guiding means for the threads of each group. the guiding means of each group being movable towards and past the threads of the other group, means for moving the guiding means of one group, a sheave, a flexible member suspended from said sheave and connecting the guiding means of this group with those of the other group in such manner as to simultaneously move the two guiding means and grou s of threads in opposite (1i rection, means f dr simultaneously passing a weft thread through each of the sheds formed in said threads in consequence of a movement of said guiding means and separate means for setting the weft threads in the two sheds onto the woven fabric.

25. A loom comprising means for forming the warp threads into two groups exguiding means and separate means tending at an angle to each other, separate guiding means for the threads of each group, the gu1ding means of each group being movable towards and past the threads of the other group, means for moving the guiding means of one group, a separate lever carrying the guiding means of each group, means for connecting said levers in such manner as to simultaneously move the two guiding means and groups of threads in opposite direction, means for simultaneously passing a weft thread through each of the sheds formed in said threads in consequence of a movement of sad gu1ding means and separate means for setting the weft threads in the two sheds onto the woven fabric.

26. A loom comprising means for moving the warp threads so as to form in each operation two sheds,.one to the rear of the other, means comprising a shuttle for passing a weft thread through each shed, a shuttle guiding channel being formed in said shed forming means and an eye on said shuttle projecting from said channel and means for beating up each weft thread.

27. A loom comprising means for moving the warp threads so as to form two sheds, one to the rear of the other, in each operation, two shuttles, two juxtaposed shuttle boxes, a spring-actuated shuttle striker associated with each shuttle box and common controlling means for said strikers and means for beating up each weft thread.

28. A loom comprising means for moving the warp threads so as to form two sheds, one to the rear of the other, in each operation, two shuttles, two juxtaposed shuttle boxes, a spring-actuated shuttle.

striker associated with each shuttle box, two forked levers coupled with each other for controlling said strikers and a common actuating means for said levers and means for beating up each weft thread.

29. A loom comprising means for moving the war threads so as to formtwo sheds, one to the rear of the other, in each operation, two shuttles, a weft thread associated with each shuttle, means for simultaneously moving said shuttles and weft threads in juxta osition across said loom and means for -s iiftingthe weft thread governed by one shuttle towards the weft thread governed by the other shuttle and means for beating up each weft thread. f

30. A loom comprising two groups warp threads, means for moving said grou sso as to form in each operation two she s, one to the rear of the other, means for looking said moving means in operative position, a shuttle and electric means arranged to be actuated by said shuttle for releasing said moviu means and means for beating up each we t thread.

31. A loom comprising two groups of warp threads, means for moving said grou s so as to form in each operation two she s, one to the rear of the other, means for looking said moving means in operative position, a shuttle, a solenoid adapted to act on said locking means and a switch device adapted to control said solenoid and to be actuated by said shuttle and means for beatingup each weft thread.

32. The method of producing a fabric by weaving comprising positively guiding one of two groups of warp threads alternately in one and the other direction so as to simultaneouslvform in each alternate operation two sheds, one to the rear of the other, pass-

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