US364402A - Island - Google Patents

Description

(No Model.) 4 2 Sheets-8heet 1. W. EVANS.

l GROSS WBAVING MBGHANISM. No. 364,402. Patented June 7, 1887.

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GROSS WEAVING MEGHANISM. No. 364,402. Patented June '7, 1887.

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UNITED STATES PATENT OEEICEo VILLIAM EVANS, OE PROVIDENCE, RHODE ISLAND.

CRoss-wI-:Avme MECHANISM.

SPECIFICATION forming part of Letters Patent No. 364,402,da ted June 7, 1887.

Application filed May 14, 1386. Serial No. 202,144. (No model.)

T0 all whom it may concern,.-

Be it known that I, WILLIAM EvANs, of the city and county of Providence, and State of Rhode Island, have invented certain new and useful Improvements in Cross-\Veaving Mechanisms, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My`invention relates to cross or gauze weaving mechanism and to the double-acting or openshed class of looms.

The objects of my invention are to provide an efficient and comparatively simple mechanism for cross or gauze weaving, and to adapt the class of fancy or openshed looms to weave the peculiar kindof fabrics known as gauze7 and lineau or leno. As is well known,

vthe fabric gauze differs, essentially, from all other fabrics, in that in a pair of contiguous warp-threads one of said warps always lies to the upper side and the other lies to the under side of the interwoven weft-threads throughout the weaving. This characteristic is due to the peculiar twist ofthe pair of contiguous warps upon themselves between any two consecutive picks of the shut-ile. These twists ofthe warps are from right to left and left to right alternately, so that the one warp is Inaiutained to the one side and the other warp to the 'other side of the weft, which is laid after every twist, and thus is formed a succession of loops ofthe warps having these.

twists interposed and the wefts interwoven in said loops. The fabric called lineau or leno7 is composed of the combination of the above-described gauze-weave and any other form of weaving-as, for instance, the plain weaving, in which the warps are crossed X- shaped, in contradistinction to the twisting of the gauze-weaving.

In the operations of weaving gauze and lineau the conditionsl require that, of a pair of contiguous warps to be twisted and interwoven with wefts, if one of said warps be raised and the other depressed to form the shed for the shuttle t0 pass through, the raised warp must be passed under the depressed warp and raised again before the next pick of the shuttle. I-Ierctofore these fabrics have been made only on the single-acting gauze-looms, which level all warps at every pick of the shuttle, and at the leveling-point cross the warps to effect the twist. Thus, prior to my invention, these fabrics have been woven under all the deficiencies of the single-acting loorn compared with the double acting loom. As is well known, the Inost important advantage of the double-acting over the si ngleA acting loom is the increased speed at which it can be operated. This gain of speed is owing to thc ability ofthe doubleacting loom to select and withhold certain warps for a certain number ofsueceeding picks of the shuttle, as the pattern bein g worked Inay demand. However, the construction of the double acting loom heretofore employed did not permit of its weaving gauze and lineau, because of the inability of the loom to operate a warp-thread so as to raise it for one pick of the shuttle, and then, after that pick, lower it and raise it again before the succeeding pick of the shuttle. It is one purpose of my inven- `tion to overcome this defect and to adapt this class of looms to weave gauze and lineau with their usual speed, and at the same time to in no wise iIIcapacit-ate the loom in performing its ordinary work. Myv invention essentially consists in combining the ordinary full motions ofthe recurrent or reciprocating harnesses with a novel and peculiar half-andreturn motion of others of the harnesses; and, further, my invention consists in the new constructions and arrangements of certain necessary parts, as hereinafter fully described and claimed.

I have here merely illustrated my invention as embodied in and co-operating with the class of looms known as the dobby,77 in which the harnesses arelifted by apositive action of j acks and lifters, and subsequently depressed by retracting-springs or by weights. Of this character of the dobbyloom a full description with illustrations may be found in United States Letters Patent for a loom, No. 217,589, dated July l5, 1879.

In the accompanying drawings, illustrating my invention, Figure l is a rear view of the` head or end of the loom containing the harnessoperating mechanism,A the main part of the loom being omitted. Fig. 2 is a View of my double-hooked jack detached. Figs. 3, 4, 5, and 6 are diminished perspective views of the ICO ` rod 27, with which it is kept in close engage-c soy ldinary knuckle-joint.

harnesses and operati ng-levers and connecting cording with their guide-pulleys. These views represent the harness-frames and levers in portions, and show four succeeding positions of several parts in Fig. 1, as hereinafter fully described. y

In the said drawings, like letters and numbers designate corresponding parts throughout.

I will first describe the wellknown parts of the shedding mechanism as used in the abovereferred-to patent, and will then proceed to set out my invention.

Referring te the said drawings, the frame 1() formsy the head or structure of the loom containing the shedding mechanism and adjuncts. The main cog-wheel ll receives motion suitably from the counter-shaft, (not shown,) and thereby reeiprocates the connecting-rod 12, joined to the crank-pin 13 by means of an or- The upper end of rod 12 is attached by a pivot to the stem or main arm of the T-Shaped rocker 14, keyed on shaft 15, which is journaled in frame 10. lIhe ends ot' the cross-head of rocker 14 are each fastened by means of a pivot-joint to a hook, 16, which are fixed, respectively, to the litters 17 and 18, sliding horizontally in the slots 19, formed in frame 10. Some of these described parts are repeated upon the other or front side of the loom, and operate similarly to give an even motion.'

The harness-operating lever d hasa straight head with a series of notches, 2l, thereon, for the regulation ofthe harness-cordiug ,Z, which passes over guide-pulley 23, and is fastened to the frame D. 'Ihe operations ot' lever d serve to elevate the harness-frame D, which is depressed by the force of the retraeting-spring 25. rlhe lower and outer end of operatinglever d has a notch, 26, riding on the fulcrumment by means of the curved slot 28, working on bar 29. Near the center of lever d, and in an extension thereof, is arranged a notch, 30, into which takes loosely the pin 31, ixed near the centralpoint of the connector 32, which vibrates on said pin. To the lower end of connector 32 is fastened, by means of a pivot, the jack 33, provided with a hook, 34, located at the outer end, and designed to engage the lifter 18. To the upper end of connector 32 is similarly affixed the jack 35, provided with the hook 36, engaging with lifter 17. In an obvious manner the connector 32 may be made to rest With both its upper and lower ends against the fulcrum- points 37 and 38, respectively, or with its lower end against point 38, as shown, or with its upper end on point 37.

The needle or jack selector 40 is set through guide-pieces 41, and'also passes through longitudinal slots in thejacks 33 and 35, and carries near the upper and lower ends the fixed collars 42 and 43, which take up against the.

under sides of said jacks. The lower end of selector 40 rests upon the inner end of the tri p-lever 44, pivoted at 45, and the outer end of which is tripped by the elements or pins on pattern-chain 46, which is passed thereunder by the revolving chain-cylinder 47.

When the cog-wheel 11 revolves, it reci procates rod 12, which vibrates rocker 14, which turns with its shaft 15, and this serves to reciprocate the lifters 17 and 18 horizontally in their slots. XVhile a jack is in engagement with an outgoing lifter, the jack follows it and draws outward the corresponding end of connector 32, which carries in like manner operating-lever d, and so lifts the attached harness. The selector 40 is controlled indirectly by the pattern-chain 46, and selects the jacks to engage with or miss the traveling litters and to operate the harness,according as the elements of the pattern demand. In the positions shown the litters 18 and 17 may be supposed as having reached about the midway point of their traverse-the former on an inward and the latter on an outward traverse. The jack 35 being in engagement with litter 17 and the jack 33 out of engagement with lifter 18, the connector 32 is bearing on fulcrumpoint 38, and is drawing lever LZ outward and lifting the connected harness. Ihus in a well-known manner .the jacks are controlled indirectly by the elements of the pattern to operate the harness.

I will now consider the description and op erations of my improvements and their *co- Operation with the above-described ordinary features ofa shedding mechanism.

By my invention I 'secure a peculiar halfand-return motion of certain harnesses, combined with certain full motions thereof, when so desired. To gain the halfgand-return motions I have shown an eXtra half-stroke litter, which has half the limit of traverse that the ordinary lifters have. The half-stroke lifter has suitable jacks engaging therewith, which may be joined in the usual way with a connector cooperating with an operating-lever. The half-stroke lifter I reciprocate by a peculiar half-motion device, hereinafter described. I obtain a second half-and-return motion of certain other harnesses by the arrangement of a pair of ordinary operating-levers with connections to a single harness controlled by the levers working simultaneously and oppositely or singly. All of these parts are adapted to be used with any suitable patterns for weaving gauze and lineau.

In the drawings the four harnesses A B C D are represented as being operated by ve levers, a a2 b c d, which serve to elevate their respectively-connected harnesses, which are subsequently depressed-by virtue of the retracting-springs 25, secured one upon the bottom of each harness-frame in a well-known manner. The harnesses lie one back. of the other, so that in the view of Fig. 1 only the retraQting-spring 25, connected to harness D, is seen. The two-armed or L-shaped rocker is keyed upon the end of the shaft 51,V loosely mounted in frame 10, and extending from back to front of the frame. The lower1 IIS IZO

arm of rocker 50 is connected by a knucklejointed link with the connecting-rod 52, lwhich has its other end attached to the crank-pin 53 of gear 54, in mesh with cog-wheel 11. The extra or half-stroke lifter 55 is constructed and reciprocates like the litters 17 and 18. The lifter 55 works in the slot 5G and a corresponding slot ou the front of the frame formed similarly to slot 56 by means of a bracket, 57, and frame 10. The half-stroke lifter 55 is attached to the upper arm of rocker 50 by means of hook 58, and has its remote end at the front of the loom connected similarly to an armkeyed upon the front end of shaft 51. These extra parts of my improvement are duplicated at the front ot the loom-frame, where necessary, as in the case of the above described old features, and this for the like reason of giving a more uniform and steadier motion to the working parts.

Instead of using a separate and individual jack with an upwardly-extending hook to engage with the extra half-stroke lifter, I employ an equivalent therefor, as shown in Fig. 2. rIhe jack 20 is longer than the other ordinary forms of 33 or 35, and is provided with a downwardly and upwardly projecting hook, 22 and 59, respectively.A Considered with its hook 22, the jack is equivalent to the old form, and by extending the jack in length and adding the hook 59, I merge the two required jacks into one. The hook 59 coacts with half-stroke lifter 55 in the manner` described for the fullstroke litters 17 and 18 and their jacks.

The gear 54 isone-half the circumference of main cog 11, and makes two revolutions to one of the cog. It is evident that the halfstroke lifter 55, operated by gear 54, will reciprocate in its slots one-half the distance traversed by the full- stroke lifters 17 and 18, which are operated by cog 11. While a fullstroke lifter makes its complete one-way traverse, the half-stroke lifter, traveling half the distance, will make its complete one-way traverse and return. This half-stroke of lifter 55 is transmitted to the operating-lever c by means of hook 59 on the jack 20, which governs said lever, and the connected harnessframe C is thereby given a half-motion by jack 20 and returned by the ordinary retracting-spring connected at the bottom of said frame.

I show the double-hooked jack 20 as influenced by three different lengths of elements in the pattern-chain,46;namely, a long pin, a short pin, and the lack of apin, or the bare pattern-chain bar. As afterward explained, this is for weaving a lineau fabric, and the jack 20, in consequence of the three-sized elements of the pattern, may assume three different positions relative to the half and full stroke lifters 55 and 17, respectively. Under the conditions shown,the pattern-chain bar in the pattern-chain has permitted the elevation of the inner end of the trip-lever 80, and accordingly the jack-selector coacting with jack 20 is at its highest position, and engages lifter IVhen the next element, a short pin, 61, is passed under the trip-lever, the jack 20 will be in its second position, and both its hooks 59 and 22 will clear the half and full stroke lifters 55 and 17,1'espectively. When the third element of a long pin, 60, of the chain 46 is presented to thel trip-lever, the jack 20 will accordingly assume its lowest position, and hook 22 will engage lifter 17.

I obtain the second half-and-return motion of the desired harness by virtue of arranging a pair of operating-levers, a a2, in connection with a single-harness doup staff, A. rIhe operations ot' the half-stroke lifter and the halfmotionlevers a a are disconnected; but their results co-operate to effect the conditions hereinaftcr described. Considering a single operating-lever as operating a single harness and the lever as governed by jacks coacting with full-stroke litters, if one of said jacks engage a lifter for a complete one-way traverse, the harness will accordingly rcspond,and the lever by its sole action can only transmit whatever motion may be given to it. Now, considering a single harness, as A, connected with a pair of operating-levers, a a2, both coacting with full-stroke litters, in this case, when the levers are both at the half-way point of their movements, their cordings connecting with harness A are alike taut. W'hen, however, they move oppositely, a2 inwardly and a outwardly, to t their limits` the connection with a is slack and the one with a taut, because it alone will have the weight of the attached harness. When they move back again in this alternate manner, at the midway and passing point the lever a2 will at that point take up the weight of the harness, and will halve the motion and return the harness to starting-point. In this manner of simultaneously operating these levers oppositely, they may be continuously operated to imparta half-motion to the single connected harness. I show the levers Va a as arranged with a Y-shaped strap, R. These levers may each one also serve to impart afull motion to the connected harness, by virtue of either one of them being moved from inward to outward limit, while its fellow lever remains stationary. These levers I call the half-motion7 levers, because they are capable of giving a half-motion in any desired consecutive number` of times when operated oppositely and simultaneously, as above described. Y

Fig. '1 representsthe full and halt' strokelifters as at their midway points of travel, andthe coacting jacks and conjoined parts accordingly in their relative positions. The operatinglevers a c b c are all provided with connectors and suitable adjuncts, like those described for lever d, except the double-hooked jack 20 for the lever c, and the forked connection R for leversa a2.

In Fig. 1 the lever c is at the inward limit of travel, with its fork of connection R slack, since its fellow lever, a', is moving outwardly on the full stroke lifter 17, by virtue of a long IIO pin on chain 46. The lever b is at the midway point, falling inwardly, by virtue of a short pin having thrown its jack out of engagement by tripping thelever 7l. The lever c is at the midway point of its half-motion, by virtue of the pattern-chain bar, of chain 46 having dropped its trip-lever 8O to the lowest point. The position of lever d has beenbei'ore described. The connectors 76 and 77, attached to thcjacks 74 and 20, respectively, are connected with their respective levers a2 and C. The several harness-frames A B CD are at the midway points of their reciprocations.

Figs. 3, 4, 5, and 6 illustrate four successive relative positions of the harness and harnessoperating levers as they occur in the weaving of lineau according to the manner and pattern here shown. The parts designated D and C are portions of ordinary harness-frames provided with single-eyed heddlcs carrying the warps m and n, respectively. These frames are connected by the respective cordings d and c',passing oversuitable guide-pulleys, with their operating-levers d and c, the former coacting with full-stroke litters, and the latter with my full and halt stroke lifters.

The standard or doup frameB (shown in portion) is` an ordinary harness-frame provided with a double-eyed or doup heddle, through each eye of which passes one side of the looped cord or doup 7c, the ends of which are attached to the doup-stati A. The doup-frame B is suitably connected with lever I) by means of cording b', and coaets with full-stroke lifters. The doup-staftA(s hown in portion) is operated by the half-motion levers ct a2, to which it is connected by the Y-shaped connecting-strap R, both forks et which are equal and connected, one with each lever a a2, respectively, and its stem. is connected with the stai-'f A. The parts of harness A, B, C, and D are represented as located, one back of the other, in the order enumerated, Abeing at the front.

. By thev constructions described the harnessframes B and D make full straight-away motions, while the parts A and C make half-andreturn motions, and are also capable ot' making full straight-away motions. These parts are thus termed, the former full-motion7 and the latter halfand-return-motion 7 harnesses.

It is to be observed that in Figs. 3, 4, 5, and 6 the ordinary retraeting-springs,25, shown in Fig. l are in these views omitted. However, the necessary ofce of these springs will be readily understood by one familiar with the art. The term harness-frame77 is employed to designate the loomharness comprising the laths and the heddlcs mounted thereon.

The warps m and n, I term the upper7 and under warps, respectively, because in the gauze-stitches of the weave they are located to the upper and under sides ofthe interwoven weft. In drawing in these warps in their respective harness-eyes the u nder warppt, merely passes through its harness-eye, and is maintained in a straight path, while the upper warp, m, isset in its harness eye, and is also passed through the doup k, so that at times it will be thereby drawn aside from its straight path and crossed upon the heddle bearing the under warp, n.

In describing the positions of the recurrent or reciprocating harness frames, according to the pattern shown for weaving asimplc design of lineau fabric after my method, I will designate the vthree situations of the harnesses at their highest, middle, and lowest points of rcciprocation as the high limit,77 midway point, and low limit,7 respectively. The harness C, carrying the under warpt, is given the half-and-return motion in order to carry the warp n to the midway point, where the descending warp m can be passed under warp a, which then descends, while the doup k raises warp m to form the upper part while the warp u forms the lower part of the shed for the next pick of the shuttle.

Referring to Fig. 3, let it be supposed that the position there illustrated is the first position before starting the loom, which may be supposed to have been previously making gauze stitches, and which came to rest while the warps were partly turned on themselves for the next twist. In this position all the liarnesses,A, B, C, and D, are at the low limit, and the upper and under warps,m and ,are leveled and crossed one above the other, preparatory to being twisted on themselves in the formation of the succeeding gauze-stitch. Thelevers a c2 Z c d in this iirst position are all in line and the branches of the forked connection are both taut. The condition of the second relative position of Fig. 4 is produced by the levers a and d moving to the outward limit on full-stroke litters and the levers a2 Z1 cremaining at rest. This serves to raise harness A and D from low to high limit. By this shedding movement the crossed warps have been tightly twisted on themselves, and the shuttle here makes a pick through the shed and interweaves lthe weft-between the twisted Wa'rps. The next and third position in Fig. 5 is obtained by levers a and a2 moving oppositely on full motions-one on a lifter and the other bya retracting-spring, as above described n and thereby giving their doup-staff A a halfand-return motion; also, by lever b moving outwardly on a full-stroke lifter, and accordingly moving the doup-frame B from low to highlimit; also,by lever ccoacting with thchalfstroke lifter and imparting a half-and-return motion to its frame C; also, by the lever el moving inwardly a full motion by means of a rctracting-spring, and imparting a like motion to its upper warp-frame, D, which moves accordingly from high to lowlimit. During this change ot position the warps have been crossed and twisted on themselves, forming a gauzestitch, and. then the shuttle picks and lays the weft. rI'he next and fourth position of Fig. G is arrived at by levers d and a remaining at rest, while a2 and `b are moved in by virtue of their respective retracting-spriugs, and c is IOO IIO

carried out on a full motion by virtue of its j ack 2() coacting with a full-stroke lifter. These movements have caused the doup-frame and staff` A and I3 to descend from high to low hmit, frame C to rise from low to high limit, and frame Dto remain at rest at low limit. In this change of position the warps have not been twisted, but merely crossed side by side, asin plain weaving, and in this position of Fig. 6 the shuttle picks and interweaves the weft. This position now changes the position o f the upper and under warps reversely relative to the weft. Freni the position of Fig. 6 the changes maybe made, according to the pattern desired, into a series of succeeding similar positions, and thus make more plain weavmg-stitches, or it may be changed back tothe second position of Fig. 4 and repeat the described pattern of lineau.

It is obvious that the design of the lineaupattern may be varied at pleasure, and the half-motion harnesses will accordingly make anynumber of succeeding full straightaway motions and half-and-return motions alten nately. For instance, the pattern may call for three succeeding full straight-away motions of the half-motion harnesses to make plain stitches, and then alternate to two halfand-return motions of the same harness to form gauze or twisted stitches. To weave a continuons gauze fabric the half-motion harness would be controlled by the pattern to make half-motions successively. Considering the case when the fourth position of Fig. 6 is changed to the second position of Fig. 4, and so repeated, a lineau fabric will be constructed of twisted and crossed stitches combined in two of the former and one of the latter alternatel y throughout. The different positions of the harness and operating-levers illustrated in Figs. 3, 4, 5, and 6 represent the extreme limits of movement of these relative parts.

By virtue of my described improvements of combining the half and full motions of certain of the loom-harnesses I can readily operate the ordinary fancy or double acting loom to weave gauze and linean fabrics in a rapid and efficient manner, and any pattern of lineau can be constructedby the use of my invention. This is due to the fact that by the combination of the motions described the double acting loom is adapted to raise a warp for one pick of the shuttle, and then after that pick lower it and raise it again before the succeeding pick of the shuttle. I secure all the advantages of a double-acting over the singleacting loom in weaving gauze and lineau, and can therefore in a given time weave more fabric than the single-acting loom. I obtain the same uniformity of speed in the motion of the threads throughout, since all threads pass the same distance in the same time, and only at the time the worked pattern demands. Any number of the sets of half and full motion combinations of harnesses may be used and may be combined at pleasure to vary the pattcrns.

My invention does not in any respect retard or alter the operations of the doubleacting'loom, and can readily be thrown out or in operation, as required.

There may be various `modifications made in the several parts of the apparatus shown without a substantial departure from the spirit of my invention, as herein described and claimed.

Having thus described my invention, I`

claim as new and desire to secure by Letters Patent-'- l. In combination, a harness-frame, a pair of operating-levers for said frame, and connections between said frame and levers, whereby said levers may together or alternately operate said frame.

2. In combination, aharness-frame, a pair of operating-levers for said frame, and a Y-shaped or equivalent connection having the stem thereof attached to said frame and the branches thereof attached one to each of said levers,re spectively, whereby said levers may operate said frame on a full straightaway motion or on a half-andreturn motion.

3. In combination, a harness-frame and a connected operating-lever therefor, provided with a connector and jacks, the loom-frame lifters engaging said jacks, means for operating said lifters different distances, as described, means for throwing in or out of engagement said jacks and lifters, whereby said frame may move accordingly on a full straightaway motion and a half-and-return motion alternately, or may move solely and successively on either of said motions. y

4. In combination with the loom-frame and reciprocating full and half stroke lifters, first, a pair of harness-frames and connected operating-levers therefor, provided with connectors and jacks; second, a harness-frame and a connected operating-lever therefor, provided with a connector and jacks; third, a harnessframe and a pair of operatinglevers connected therewith and provided with connectors and jacks; fourth, means for throwing in and out of engagement all of said `jacks and lifters,

and means for actuating said lifters, whereby the pair of said first frames may move on full straight-away motions, and said second and third frames may move any number of times on full straight-away motions and half-and-return motions alternately, or on either of said motions successively.

5. In combination, a harness-frame carrying an upper warp, a harness-frame carrying an under warp, a doup-frame and doup-staffl together carrying a doup, said upper warp passed through said doup and controlled thereby, theA loom-frame and Vhalf and full stroke lifters, meansfor reciprocating said lifters, the operating-levers, the forked strap, connections between the said harness-frames, doup frame and staff, and the operating-levers and forked strap, the connectors and jacks, the jack-selectors and trip-levers, and the patternchain, all constructed and arranged for IIC) with a connected operating-lever and a cennector and jacks governing said lever and coacting with both the full and the half stroke lifters, a doup-frame and doup-staff together carrying the doup, said upper warp passed `through and controlled by said doup, said doup-frame provided with a connected operating-lever and a connector and jacks governing said lever and coaeting with the full-stroke lifters, said doup-staff provided with a pair of operating-levers connected therewith, connectors and jacks governing said levers and coacting with the full-stroke litters, means for actuating all of said litters, -and means for throwing in or ont of engagement said jacks and litters, whereby said upper Warp and doup frames may move on full straight-away motions and said under warp-frame and doupstaff may each move any number of times on full straight-away and half-and-ret-urn n10- tions alternately, or on said half-and-return motions successively.

7. In combination with the leoni-frame, a T-shaped rocker and fullstroke litters actuated thereby, an L-shaped rocker and a halfstroke lifter actuated thereby, one or more sets, consisting of two harness-frames carrying the upper and under warps, respectively, a doup-frame and a staff together carrying the doup, one or more sets of ve operating-levers connected with said harnesses, having a pair of every said five connected with a donpstaff, connectors and jacks, jack-selectors for said jacks, means for controlling said selectors, and means for actuating said rockers, whereby the said sets of harnesses may be moved in pairsthe one pair on full straight-away motions, the other pair on any number of full straightaway and half-and-return motions alternately, or on either of said motions successively.

8. In combination With the loom-frame, the

u full-stroke lifters and the half-stroke lifter and actuating means therefor, an upper-warp fullmotion harness-frame and a full-motion doupframe, each of said frames provided with a connected operating-lever and a connector and jacks governing said lever and coacting wit-h said full-stroke lifters, a half-and-return-motion under-warp frame, provided with a connected operating-lever and a connector and jacks governing said lever and coacting with said half-stroke lifter, a half-and-return-motion doupstaff,together with said doup-frame, carrying a doup and provided with a pair of connected operating-levers and connectors and jacks governing said levers and coacting with said full-stroke litters, a pattern-chain provided with three different elements, and means intermediate between said patternchain and jacks.

9. In combination with the loom-frame, the full and the half stroke lifters and actuating means therefor, a full-motion harness-frame, carrying an upper warp and provided with a connected operating-lever and a connector and jacks governing said lever and coacting With said full-stroke lifters, a half-and-returnmotion harness-frame carrying an under warp,

and provided with a connected operating-lever and a connector and jacks governing sald lever and coacting with said full and halt stroke litters, a full-motion doup-frame carrying the doup and provided with aconnected operating-lever and a connector and Jacks governing said lever and coacting with said full-stroke litters, a half-and-return-motion doup-statt', also carrying the doup and provided with a pair of connected half-motion operating-levers and connectors and jacks governing said levers and coacting with said fullstroke lifters, a pattern-chain provided with three different elements, means intermediate between said pattern-chain and jacks, said elements prearranged to operate in order upon said intermediate means and select the jacks, whereby said upper and under warps may be twisted on each other and crossed by each other alternately any number of predetermined times, as s et forth.

l0. 'Ihe combination, with the loom-frame and the half and full stroke litters, and means for actuating the lifters, of the jack provided with two oppositely-disposed hooks, the connector and operating-lever, the jack-selector, the trip-lever, and the pattern-chain having three different elements therein, whereby said jack may have three distinct positions relative to said lifters, substantially as described.

l1. In combination with the loom-frame, the full-stroke litters, the T-shaped rocker provided with connecting-hooks and reciprocating said lifters, the stem of said rocker provided with a connecting-rod, the main cog-wheel, to which said rod is secured by a crank-pin, the half-stroke lifter, the L-shaped rocker provided with a connecting-hook and reciprocating said half-stroke lifter, a connecting-rod secured upon said L-shaped rocker, and a gear-wheel connected therewith, said gear-wheel in mesh with said cog-wheel and one-half the circumference thereof, the harness-frames, doup-frame, and doup-staff, the connected operating-levers and the forked connection, the connectors and the single and double hooked jacks, the jack-selectors and trip-levers therefor, and the pattern-chain engaging said trip-levers, all substantially as and for the purpose herein described 12. The combination, with the loom-frame, of the fullstroke lifters 17 and 18 and the halfstroke lifter 55, and means for operating said IOO ITO

lifters, the donp-staff-A and the doup-frame B, together provided with the donp 7c, the harnessframes C and D, the operatingdevers a', a, b, o, and d, the cordings a b o d', and the forked strap R, the connectors and the single and double hooked jacks, and means for selecting said jacks, substantially as herein described.

13. The combination, withthelooni-franie, of the full-stroke lifters 17 and 1S andthe half-stroke lifter 55, and means for actuating said lifters, the donp-staff A and the doupfranie B, together provided with the doup 7c, the harness-frames C and D, the cordings a b c d and the forked strap R, the operating-1evers a a2 b c d, the connectors and the jacks', the j ack-selectors and trip-levers therefor, and the pattern-chain 46, substantially as herein described.

14. The combination, as hereinbefore set 2o harness and donp-staif with half-and-retnrn 25 motions, substantially as described.

15. The combination, as hereinbefore set forth, of full-motion harnesses and means for operating the same, halfand-return-niotion harness and (loup-staff, and means for oper- 3o 'ating the said latter harness and donp-staf with halfand-return motions and with full motions, substantially as described.

WM. EVANS.

Vitnesses:

M. F. BLGH, J. A. MILLER, J r.

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