US1305706A - Thread-uniting machine - Google Patents

Description

E. F. HATHAWAY.

THREAD UNITING MACHINE.

APPUCATION FILED FEB. 14. 1906.

Patented J 11110 3, 1919.

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A TTORNEY'J E. F. HATHAWAY.

THREAD UMUNG MACHINE.

APPLICATION FILED 1-18.14, 1905.

Patented June 3, 1919.

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E. F. HATHAWAY.

THREAD UNiTING MACHINE.

anucmon FILED FEB. u. I906 1 ,305,706. Patented J une 3, 1919,

7 SHEETSSHEET 3.

E. F. HATHAWAY.

THREAD UNITING MACHINE.

APPLICATION men in. n. 1906.

Patented June 3, 1919.

1 SHEETS SHEET 4 E. F. HATHAWAY.

THREAD UNITING MACHINE.

APPLICATHJN FILED ran. H. 1005.

1 ,305,706. Patented June 3, 1919.

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THREAD UNIHNG MACHINE.

APPLICATION FILED FEB. 14. 1905.

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E. F. HATHAWAY.

mama umrms MACHINE.

APPUCATION FILED FEB. 14, I906.

Patented June 3, 1919.

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UNITED STATES PATENT OFFICE.

EDGAR F. HAIHAWAY, 015 BOSTON, MASSACHUSETTS, ASSIGNOR TO AMERICAN WARP DRAWING MACHINE COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MAINE.

THREAD-UNITING MACHINE.

Application filed February 14, 1906.

T 0 all whom it may concern Be it known that I, EDGAR F, HATIIAWAY, a citizen of the United States, residing at Boston, county of Suffolk, and State of Massachusetts, have invented an Improve ment in 'Ihread-Uniting Machines, of which the following description, in connection with the accompanying drawings, is a specification, like letters 011 the drawings representing like parts.

My invention relates to improvements in thread-uniting machines and, as embodying one form thereof, I have herein illustrated the same with reference to a machine for uniting the free ends of one series of warp threads to those of another.

My invention will be best understood by reference to the following description, when taken in connection with the accompanying drawings which show, for illustrative purposes, one specific embodiment thereof, while its scope will be more particularly pointed out in the appended claims.

In the drawings,

Figure 1 is a front elevation of a threaduniting machine embodying one form of my invention Fig. 2 is an end elevation of the same;

Fig. 3 is a detail in front elevation, partially broken away, showing one end of the base of the machine frame;

Fig. 4 is a plan view showing with reference to a loom the usual position of the same machine when in operation;

Fig. 5 is a central, longitudinal section taken through the friction driving device shown in Fig. 1;

Fig. 6 is an end view of a portion of the machine. showing the driving mechanism for the carriage compensating feed;

Fig. 7 is a front elevation of the parts shown in F ig. 6;

Fig. 8 is an enlarged detail in plan of parts shown in Fig. 6;

Fig. 9 is a side elevation of the same;

Fig, 10 is a perspective showing the relation of the two sets of warp threads to the uniting mechanism;

Fig. 11 is a plan view of the knotter carriagc and knotter mechanism;

Fig. 12, a rear elevation of the same;

Fig. 13, an end view, partially in section;

Figs. 14, 15, 16 and 17 are enlarged details in plan showing the relation of parts Specification of Letters Patent.

Patented June 3, 1919.

Serial No. 301,018.

of the knotter mechanism during sucros sive stages of the knot-tying operation;

Fig. 18 is a front elevation of the knot ter during the completion of the knot-tying operation, and

Fig. 19 is a vertical section in elevation, taken lengthwise the knotting device.

While certain features of the invention have application to machines adapted for purposes other than warp uniting the principal use of the illustrated embodiment of my invention is to join the thread ends of an old warp, which has been in the loom to a new warp. And while certain features of the invention may be usefully employed in joining the ends of either a leased or unleased warp the mechanism herein described is particularly adapted to meet the requirements in the case of commercial warps where crosswise or transverse sections of the warps held between clamps or other holding devices in unleased relation with the threads substantially parallel but irregularly spaced, are required to be united.

In the embodiment of my invention which I have here selected for illustration, the thread ends of one warp, which may be supposed to be the old warp taken from the loom, and the thread ends of the second warp, which may be regarded as the new warp placed, or about to be placed, in the loom, are held distended in two crosswise or transverse sections, grouped and arranged opposite each other and the uniting mechanism is caused to travel lengthwise the series for the purpose of progressively acting thereon. It is of course to be understood that the movement of the uniting mechanism and the differential movements of the warp threads to be subsequently explained are required to he relative only, and that the actual identity of the stationary elements or the movable elements is immaterial except as to simplicity of construction. In the following description, therefore, where certain elements are referred to as stationai y and others as movable, or certain movements as horizontal, vertical or otherwise, it is to be understood that these terms relate specifically only to the machine disclosed and are not essential features of this invention.

The machine illustrated is provided with upright end standards a, a, which are connectcd (Fig. 4) by the base-plate a", the said Standards and base-plate being preferably of solid and substantial construction to afford a firm and suitable support for the warp carriages and uniting mechanism. At its base each standard has the lateral semicircular fender frame a, (Figs. 3 and 4) to prevent injury to the standards or to other objects in moving the machine. The principal mechanisms of the latter are carried upon a swinging head comprising the swinging end supports a, which are adjustalily mounted so that the head may be tipped to some. inclined position like that shown in Fig. 2. or maintainei'l in a vertical, upright position, as illustrated in Fig. 1.

For this purpose the end supports a (1., are mounted for swinging movement in trunnions journaled in the standards a, a. respectively, so that they may be swung there on. Means for adjusting them to any de sired position and there fixedly main aiir ing them, are provided. through the my mental gears a (Fig. upon the lower end of the two swinging supports of, e. the sail gears meshing each with a pinion a secured to a shaft upon one end of which adjacent the standard a is the worm gear. The worm gear 01 can be turned by the worm a and the hand wheel a to adjust the head to any desired inclination. This, as will be better understood when the employment of the machine with reference to the two warps is described, considerably facilitates its use, since it may be moved with readiness in an upright position through narrow loom alleys, but, when in use, the head may be swung down and over the warp roll of a loom, securing a better position for the opcrating mechanism with reference to the warp beam and the loom and with refer nce also to the position of the operator in front of the uniting machine. For ease in hair dling the base is mounted at each end upon a pair of ball bearing casters a (Fig. 2). The machine is shown in Fig. 1 as broken away and therefore considerably shortened, but its actual length will of course be adequate to hold the widest warp.

The thread ends to be united may be sup ported in any suitable way, but herein the ends of the two warps are carried and held upon separate frames or carriages B, and C Fig. 1), respectively, which are mounted to hold the threads in proper position with reference to the uniting mechanism, and, in the disclosed form of machine, are also adjustably movable within certain limits lengthwise the machine.

The carriage B comprises the side or end members b united and supported by a rod l), which is carried upon suitable roller supports 6 the latter journaled upon the swinging end supports a a. At their opposite or lower ends the said end members vvl i are united by a similar rod 6 which is sup ported for sliding n'ioven'ient in the head of the lH'rLClllIlB. At the lower end of each end member (Fig. 2) is provided a yoke or jaw 7), in which is mounted upon the adjusting screw I), the clamping jaw I), the latter adapted to receive one end of the clamping bar (Fig. 10) in which the warp threads of one warp (herein the old warp) may be clamped.

Upon the upper longitudinal carriage rod 1), and near opposite ends of the machine. are clamped the brackets 6 which have de pending clamping jaw members 5 (Fig. 2) which are adapted to receive a second bar [1 (Fig. 10) upon which will customarily be clamped the extreme ends of the old warp threads.

The fiarriage C for supporting the remaining. and what will ordinarily be the new warp, coi'istructed in substantially the same general fashion as the carriage B, but located and mounted upon the head so that its thread ends are held distended in a sub stantially parallel relation with reference to the thread ends of the other warp and in front of the latter or at the left as viewed in Fig. Further specific description of the parts comprising the carriage C is unnecessarj the corresponding parts being lettered with the same index numerals as the parts upon the carriage B. Obviously, if desired, for any reason, the position of the old and new warps might be reversed.

Successive threads in each warp, prior to their seizure by the thread-uniting mechanism, are acted upon by suitable separating and selecting devices, which act first to se lect and then to separate the individual thr ads and present them in suitable alinement to the uniting devices. For this purpose there are provide two parallel re iatable shafts r] and c extending lengthwise the machine. These are arranged adjcent to the uniting mechanism and when the respective warps are placed in position (see Fig. 10), the threads of the warp r-iounted upon the carriage B in leading from one clamping bar to the other pass over the separator shaft (Z, while the threads of the warp upon the carriage 0 pass over the separator shaft 6. These shafts are removably journaled at one end in the swinging end piece a and at the op posite end are removably splined in sleeves which are journaled upon the opposite end frame member a, the said sleeves carrying intermeshing gears cl and 6 (Fig. 1) respectively, by which the two shafts are given equal but opposite rotation.

The sleeve carrying the gear 6 has also secured thereto the bevel gear f (Figs. 1, 6 and 7), meshing with the bevel gear f upon the short inclined shaft at the lower or opposite end of which is the bevel gear f,

meshing with a similar gear f upon the end of the main drive shaft 9. The latter passes lengthwise the carriage and acts to impart periodic movement to the thread-uniting mechanism. The gear f and the drive shaft in turn are driven by the bevel gear upon one end of the inclined shaft f, to the lower or opposite end of which is secured the bevel gear 7, meshing with the gear f", which latter is mounted upon and secured to the counter-shaft h, journaled horizontally in the fixed standard ends a, a and having its axis coincident with the axis of tipping movement of the machine head, whereby the tipping adjustment of the latter does not affect the driving connection between the said counter-shaft and the described mechanism above.

Driving movement (Fig. 1) is imparted to the counter-shaft h through the sprocket wheel h secured thereon, engaging with the sprocket chain h driven by the underlying sprocket wheel 1L3. the latter secured to the clutch member 2', loosely mounted upon the main driving shaft i but adapted to be clutched thereto through the sliding clutch member '5 When the clutch is thrown in, a constant rotation is given the driving shaft and the separator shafts d and 6.

Upon each separator shaft is a slidin sleeve which is provided with selecting and separating means for suitably selecting and separating the threads preparatory to knotting the same. The selecting and separating devices being of substantially the same construction, description of one only is necessary. Referring to the device for the shaft d, (Figs. 1 and 10) the same is in the form of a sleeve having a tapering nose preferably corrugated for a portion of its length, and a separating screw (P, the latter provided with a spiral thread groove. The sleeve is provided with a feather or key fitting a seat or key-Way extending lengthwise the shaft d, so that it may be rotated by the shaft while being propelled or slid lengthwise the same. To advance the thread selecting and separating device with the threaduniting mechanism, there is provided a yoke d (Fig. 10), which enters a groove in the separating sleeve, said yoke being connected to a bracket j mounted upon the carriage of the uniting mechanism to travel therewith. This permit the sleeve to turn freely in the yoke, while advancing therewith.

Since each set of warp threads are held stretched over a separating shaft when the warps are in position, the advance of each selecting and separating mechanism causes the threads of each series first to travel upon the inclined nose cl and under the resulting increased tension to be stroked by the corrugations into a position of parallelism. They are then engaged by the separating screw (i the advancing lip of which'singles out eachthr'ead arid'selects it from the re maining ones, While the continuation of the groove of the worm or screw separates the selected thread still. further and presents it at the proper time and place to the action of a thread-drawing device while it is held in proximity to and in substantial parallelism with the foremost thread of the remaining series. The selecting lip referred to is formed where the groove cuts through the slightly raised shoulder at the end of the threaded portion of the sleeve, and such raised shoulder bears against and moves across the edge of the sheet of unseparated warp threads, the lip acting to pick off the threads one by one as the rotation of the shaft (1 causes it to cut throughthe plane of the threads. The screw thread extends for a sufiicient distance to hold separate a series of the threads prior to their engagement by the thread drawing device. so that the operator is enabled to check the accu rate operation of each selecting and separating screw prior to the taking of the thread by the thread taking device.

The preferred operation of placing the two warps in the machine briefly is as follows: The extreme ends of the old warp before withdrawal through the harness are clamped upon the bar B (Fig. 10). This clamp bar consists of a light metal channel iron in which there is forced a clamping strip covered with rubber, felt or other suitable friction material.

The ends of the new warp which has been placed upon the warp beam of the loom are also clamped by a similar clamp bar 0 The uniting machine which may be sup posed to have its head adjusted to a vertical position to facilitate its transportation, is then moved to the loom and swung around with its back adjacent to the back of the loom, as indicated in Figs. 2 and 1, and the head of the machine swung down by means of the adjusting hand wheel a to overhang the back of the loom. This posi tion and relation places the machine directly back of, with its operating parts overhanging the loom, and occupying the minimum .amount of additional space.

The separator shaft 6 and the clamping strip of the bar 6 having been removed, the ends of the old warp are then placed in the machine in the general position indicated by the dotted lines (Fig. 2), the clamping bar being carried under the rod b of the carriage B over the channel iron of the clamp bar I) and up and over the separator shaft 0? and placed in the clamping jaws b. The clamping strip of the bar I) is then inserted to clamp the threads at that point. The other warp is likewise placed in the machine as shown in Fig. 2, the clamping bar 0 however, being first carried u and laid on the rests K upon brackets b". The separator shaft 1' is then replaced, the clamp bar clamped in the jaws c" and the clamping strip inserted in the bar a", so that the two groups of threads then present two substantially parallel stretches, as shown in Figs. 2 and 10, leading from the lower clamping bars up and over the separator shafts. Nhen the thread ends are innnovably clamped, the lower clamping bars are adjusted at each end by the adjusting screws I). e l l ig. to suitably and evenly tension the threads across the separator shafts.

It will be obvious that the machine may he used on the floor. away and apart from the loom, if desired, but the construction of the machine disclosed makes it particularly adapted for use as described with a con siderable saving in the time and labor of handling warps and harness in and out of the loom.

As a convenient means for imparting driving movement to the main driving shaft i, the latter is extended at car-h end (Fig. ,l through the frame member (I, which latter is formed into a hub or Fleevc r1 ineasing the shaft end. A bracket (1? is provided having the sleeve portion r17 in which is jmirnaled the hub a of the bevel gear a. To the end of the gear hub is screwed the plate a Which holds the gear upon the bracket. \Vhen the machine is in position, the sleeve of the bracket carrying the gear is slid within the hub a and there locked in place by the set screw a engaging a groove in the periphery of the sleeve. When the sleeve is inserted in the hub, a pin in the gear hub enters the split end of the shaft.

The bevel gear a engages with the driving pinion a. (Fig. 2) which is mounted. upon the shaft (L journaled in the bearings upon the bracket a. When the machine h; positioned near the loom the shaft a is connected (see Fig. 4) by the flexible cou )ling shaft a, which is driven from the evel gears a? mounted upon the bracket 0: clamped to the frame of the loom, said gears being in turn driven from a friction pulley a, which is caused to engage with the main driving belt of the loom. In the operation of the machine, the threads are first selected and separated and a pair of separated threads one from each warp are then engaged by thread placing mechanism herein in the form of a drawing needle which brings the threads side by side in operative relation to the knotter. The knotter then acts after which the free ends of the threads are severed and the united threads withdrawn from engagement with the uniting devices. This operation proceeds step by step until the entire series of threads has been united, when the entire series of umted threads may be Withdrawn from the machine. I

Herein provision 1s made to permit the knotting mechanism to act upon the individual threads of each series to be united irrespective of a diflerencc or irregularity in spacing of the hidividual threads. In the form of separating device shown it is desirable for the effective action of the selecting device that each warp thread engage the lip of the screw at substantially the same angle. In practice however commercial warps are not only irregularly spaced but the two warp sections to be joined are seldom of the same width and spacing. If one has already been in the loom it will usually be narrower and more closely spaced than the other. If both are maintained stationary therefore the advance of the knotting mechanism will causethe threads of one warp to bear a varying and increasingly different relation to the selecting device and to the operating mechanism from the threads of the other warp.

"hether this specific mode of thread separation is employed or not, or whether the alinemcnt of the threads is considered with reference to some other part of the uniting n'icchanism, it will be evident that some approximately ccrtain relation should be maintained between the warp threads and the uniting mechanism considered as a whole.

One feature of this invention is to provide means for correcting this variation in alinement arising from difference in width of the warps and to adapt or compensate the action of the knotting mechanism to the different or irregular spacing of the individual warp threads.

The adjustment of these several elements, the two warps and the uniting mechanism, for the diflerence in the width of the warps may be eifected in a variety of ways, as for example by imparting to any one of the elements any suitable movement which will correct for the difference. In the present machine, however, I preferably adjust the rate of advance of the uniting mechanism with reference to one of the warps, and preferably the narrower one with as close an approximation as is practicable and to impart in addition a slight differential movement to the carriage of the remaining warp in the opposite direction to the advance of the carriage, which movement is proportioned to correct for the difference in the widths of the two warps. The dilferential movement in the present machine may be imparted to the warp carriages, either manually or mechanically at will although either mechanical or manual movement alone might be relied upon, if desired.

Referring now more particularly to means by which this is accomplished: The two warp carriages, as before stated, having limited movement lengthwise the machine, carry each an appropriately toothed rack, which herein is formed in the under side of the lower carriage rods 5 0 (Fig. 7). Upon the swinging end frame member a are journaled worms 1, 1, adapted to engage respectively the rack teeth upon the carriages C and B, the worms being provided with attached driving gears Z and Z respec tively.

While these pinions might be constantly driven during the operation of the machine, to give a continued differential movement to each carriage, the same are herein driven, one to the exclusion of the other, through the small gear Z which is mounted (Fig. 6) upon the arm 1", whereby it may be swung into or out of engagement with either one of the two pinio-ns. The arm l is journaled for swinging movement upon the rod Z and has an attached arm 2', the latter at its lower end providing a journal support for the shaft 1*, fixedly secured to one end of the hand rod Z which extends lengthwise the machine, and at its opposite end is also mvingingly supported upon the rod Z piv otcd on the rod 1, so that by merely raising or lowering the hand red, the pinion Z is thrown. into driving mesh with the upper or lower of the two gears Z and 1*, respectively. A spring-pressed pin Z in the frame hearing against the projection Z upon the side of the arm Z retains the rod in either assigned position up or down.

The compensating pinion Z is mechanically driven through driving mechanism which also operates the lead screw for the advance of the uniting mechanism. This driving mechanism is provided with means for manually adjusting its speed in proportion to the slay of the warp, so that where the number of threads per inch is greater in one case than another, the advance of the uniting carriage, as well as the movement of the warp carriage may be lessened.

For this purpose (Fig. 1) the countershaft h is extended to overlie the friction disk m, the latter journaled in the bracket m, fixedly secured to the machine frame and having frictional engagement (Figs. 1 and 5) with a friction roll m on the end of the counter-shaft. The latter is mounted to have sliding movement lengthwise the shaft h, which at this point is tubular, but is driven by the pin m which passes through a longitudinal opening in the tubular shaft and is connected to the interior adjusting rod 772. The latter at its outer end has threaded engagement with the rotary sleeve m which can be turned by the crank handle to effect adjustment of the friction roll toward or from the center of the friction disk, thereby providing a variation in the driving speed.

Movement is transmitted, through the bevel pinion m" secured to the friction disk, to the bevel gear m the latter secured to the sleeve m, which is concentric with but rotatable about the shaft h. From the sleeve m" driving movement is imparted (Figs. 1 and 2) through the pinion m and intermeshing gear m to the bevel gears on and the inclined shaft m, at the upper end of which is the bevel gear m engaging with a driven gear m upon the end of the knotter lead screw m A constant rotary movement of the lead screw is thereby occasioned, dependent in rate upon the position of the friction roll m The adjustment of the latter is readily effected by the hand wheel and can be accurately gaged by reference to the overlying fixed scale m", (Fig. 1) which may be suitably graduated, with reference to the spacing of the warp threads, so that the operator can readily move the friction roll to the position corresponding to the required speed.

Referring now to the means for communicating movement from the lead screw to the warp-carriage-adjusting mechanism, the former is provided (Figs. 6%) at the end opposite its attachment to the bevel gear m with a can! a, which, once for each rotation of the lead screw, engages with the end of a pivoted arm 12/, causing depression of the rod n which is adjustably secured to the opposite end of the said arm. The rod n is normally elevated by the spring a which presses the arm 12' toward the. cam n, and is jointed at its lower end to the swinging pawl arm n, fixedly attached to the pin u the latter being journaled in the end of the swingin supporting arm a, and having attached at its opposite end the pawl n. Downward movement of the rod 11 swings the nose of the pawl into engagement with the edge of the knurled or finely toothed disk a which is pinned or otherwise secured to the stud which carries the shiftable compensating pinion P. The first depression of the rod n swings the pawl arm n down and away from its adjustable stop screw n until the pawl nose engages the disk. Movement of the swinging supporting arm a", which is journaled upon the disk shaft, is opposed by the friction created by the springpressed plate a, so that the pawl arm swings with greater freedom than the supporting arm. hen the pawl gri s the disk, however, further movement of the cam swings the pawl arm. supporting arm and paw] as a unit, causing movement of the toothed disk and the compensating pinion Z; As the cam 11 drops away from the arm n, retraction of the rod is caused by the tension sprin a, providing first a release of the pawl and then a return of both the supporting arm and the pawl arm to the position shown in Fig. 9, with the latter against the stop screw n. By adjusting the stop screw n or the position of the point of at tachment of the rod n to the lever n the movement given to the warp carriage may be varied to any desired extent within certain limits.

It will be observed that excepting when the cam is acting through the pawl to move the worm and the warp carriage, the pawl. is disengaged from its toothed disk and the carriage is free to be positioned by hand, if desired. There is here provided means for manually positioning either warp carriage, the same comprisin the sprocket chain connection 0 (Fig. l which connects the sprocket wheel 0' upon the hand rod shaft Z with the sprocket wheel upon the shaft carrying the pinion Z". By this means, the manual turning of the hand rod will give a. slight compensating movement to that carriage with which the compensating pinion is in engagement. By moving the hand rod up or down, this compensating movement may be impressed upon either warp carriage at will.

In practice, the slay of the narrower warp being known, the advance of the uniting mechanism and the degree of differential movement will readily be adjusted within all the limits of preciseness which ractical conditions permit through means 0 the variable speed friction drive. Irregularities in the spacin of the war threads, however, frequently occur, for which a fixed adjustment of the driving mechanism cannot provide. A judicious use of the hand compensating movement by the operator with reference to accidental or irregular spacing of the warp threads in the practical operation of the machine, is frequently of advantage.

The warp separatilw and selecting device itself is also adapted to supplement the above described mechanism in correcting or compensating more or less for localized irregularities or spacing in the individual threads f warp. Since the warps may be adjusted to crowd the leading unseparated threads thereof toward and against the leading end of the thread selecting screw, the threads engaging first the inclined nose thereof are brought into an approximately parallel relation under an increasin tension. This tends to bring them in a c osely arranged evenly faced fiat, stretched sheet when they reach the cylindrical portion of the sleeve and before they encounter the selectin lip.

Re erring now more particularly to the uniting mechanism, which. in the machine illustrated I have embodied in the form of knotting means, the same is mounted upon the carriage P (Figs. 11, 12 and 13), which is adapted to slide upon suitable guide-ways P extending between the two swinging frame members. This carriage is provided with a split nut p adapted to be opened or closed by the lever arm 19 and thereby engaged with or disengaged from the lead screw m During the operation of the machine, while the carriage is continuously advancing, a suitable placing member acting transversely the threads seizes the two foremost selected and separated threads of the parallel warps which are in the general relation with reference to the knotting mechanism shown in Fig. 10, and places the same in the hooked end of the knotter. The knotter then turns to form the loop, separates to receive the strand which is laid in by the placing member, the end is severed, the loop stripped from the knotter over the held severed end by means of a stripper arm, which latter then acts to hold the knotted end while the knot is further tightened by a tensioning member acting below the same. As soon as the knot is tightened, suitable stripping de vices act to cast aside both the two severed ends and the double united end to prevent in terferenee with the subsequent action of the knotter upon the two succeeding threads.

Referring more particularly to the detail of construction, there is provided a placing member or thread guide 9, here in the form of a drawing needle with an appropriately formed hooked eye, which needle is given a compound movement by the following mechanism: The needle is mounted to recip rocate longitudinally in supporting arms 9' which are secured to the slide q', adapted to slide transversely to the axis of the needle. This slide is reoiprocated by the bell crank lever 9 which is moved b the actuating arm 9, jointed to the upright pivoted lever 9 which latter has at its lower end a pin 9", engaging the face of an appropriately faced cam W. This cam, like the other operating cams for the knotting mechanism, is keyed to the splined driving shaft g so as to be turned thereby while slidable lengtlr wise the same with the knotter carriage. Combined with the lateral movement of the needle, longitudinal reciprocatory movement is imparted thereto by the swinging arm 9", pivoted at q", and jointed to the actuating lever 9 the latter being in turn jointed to the upright arm g, which is actuated in turn by the underlying cam g.

The knotting device may be of any suitable construction, but herein comprises (Fig. 19) the knot-forming member r (Fig. 19) in the form of a hook, secured to the rotary sleeve r, mounted in bearings upon the carriage, said sleeve and hook being journaled for rotary movement only. The rear end of the sleeve has keyed thereto the small pinion 1, which is adapted to engage with the segmental gear 7* (Fig. 12) pivoted at r upon the carriage and having a depending arm provided with a pin 7* adapted to engage with the appropriately formed groove of a cylinder cam r rotation of the latter thereby effecting a reciprocatory rotative movement of the knotter .sleeve and loop-forming hook 9". Combined with the loop-forming hook r is the separating member 1, also in the form of a hook, and normally retracted to register with the looping hook but connected within the sleeve to a stem W. The latter is adapted to be pressed forward against the compression spring 9" by the forward move ment of the plunger rod 1", this causing the separation of the two hooks. The plunger rod 1" at the appropriate time is pressed forward by the movement of the pin 9" carried upon the inclined arm r (Fig. 12) of the pivoted lever 1, the latter actuated by the cam 7 The separating hook 7 while having a separating movement relative to the loop hook 'r', is caused to turn therewith through the pin r Working in the longitudinal slot 1*. \Vhile I have termed the members 7 and r hooks, this will be understood as having reference to any members constructed for like functions though of quite different formation or shape. The hooks 1', r constitute a rotatable tying bill.

At the beginning of the knotting oper ation the needle or thread guide 9 moves from the position which is represented in Fig. 17 to a position shown in full lines in Fig. 14, with its sides a ainst the two foremost, parallelly arranged warp threads represented at m, m. The needle is then caused to retract in the path shown in dotted lines and into the position also shown in dotted lines, by which movement it is caused to seize the two foremost threads and lay them into the bight of the knotter hook or rotatable tying bill, the ends of the threads slipping through the friction clamp in which they are held to provide the needed slack without however being pulled free therefrom.

The next stage in the operation is indicated in Fig. 15, where the knotter hook or rotatable tying bill has undergone half a revolution, the needle moved slightly to the left, and an underlying tension rod 8 swung outwardly to put a slight yielding tenslon on the two strands where they underlie the knotter. The tension rod 8 is mounted in a socket arm 8, pivoted at and jointed to the actuating rod 8, which latter in turn is journaled to the upright, cam-actuated lever 8 the tension being placed on the thread by the spring a con nected to the rod 8 and acting to swing the rod outward when the actuating cam permlts.

As the knotting device or tying bill completes its revolution (Fig. 16) the separating hook is caused to advance and the needle or thread guide q is caused to move forwardly and laterally to assist in laying the overlying strands into the separation between the two hooks of the tylng bill.

Thus the said thread guide I] functions to move or place the threads in position for action thereon by the open tying bill. At the same time the tension rod .9 is retracted to relieve the tension. on the underlying strands, so that as the separating hook retracts, as it does as soon as the strands are inserted, the loop formed is comparatively slack. The separating hook in retracting holds clasped the inserted strands and in that position (shown in Fig. 17) the strands are severed close to the hook by a severing device t.

The latter may be of any suitable construction but preferably has a rotary movement and is constructed to give the strands a drawing out. In the disclosed embodiment of my invention the severing device comprises the sickle-shaped blade. t (best shown in Fig. 18), secured to the clld of the rotary spindle 1* and adapted at the appropriate time, as shown in Figs. 17 and 15%, to sweep across the end of the knotter and sever with a drawing cut the overlying strands. which are then held taut by the needle and the knotter hooks. The spindle If is journaled parallel with the knotter and carries at its rear end the small gear H, which meshes with the pinion 15 upon the end of the knotter sleeve 9", so that as the latter is respectively rotated the blade swingingly reciprocates in the general direction of the threads, across the end of the knotter but without effect until the right time, when the threads are appropriately positioned by the needle.

Following immediately the severing of the thread ends the knotter contines to turn for about half a revolution into some such position as shown in Fig. 18 and at the same time the swinging loop-stripping arm It moves in. as shown in Fig. 17 and in elevation in Fig. 18. to strip the loop from the knotter and slip the same over the smrcred but clasped end. The stripper arm (Fig. 11) is pivoted at it upon the carriage and jointed to the actuating rod n which latter is retracted by the spring 11 but. normally pushed forward by the upright cam-actuated lever 10* to maintain the tension arm outward. The extrei'ne end of the stripper arm has a small hook u which catches the underlying strands of the thread as it swings in and draws them taut to strip the loop off the knotter and over the severed end, the knotter or rotatable tying bill at that time having its bill depending or pointing in the general direction in which the threads are held as shown in Fig. 18. The accuracy and precision of the stripping action is assisted by the inwardly and downwardly inclined guide plate 7), which, as the stripper draws the strands inwardly, tends to direct them and aline them beneath the knotter, so that a certain and efiicient stripping of the loop is better assured and at the same time the threads are substantially clamped by the to operating action of the stripper arm u and the guide plate '0.

As the loop is stripped over the end, the latter being clasped between the knotter hooks tends to draw the knot tight, but further and final movement of the stripper arm pulls the free end from the knotter.

To still further tighten the knot, which it will be observed is now formed close to the severed ends, the outer face oi the carriage plate against which the stripper arm swings is beveled or shaped (see Fig. 19) to corre spend to the inner face of the stripper arm, so that as the latter completes its movement it holds the knotted end between its inner face and the outer face of the carriage plate. At the same time the underlying tension rod 5' gives a sharp, quick, outward stroke to pull the underlying strands and, further to tighten the knot.

The stripper arm then moves out again to the position shown in Fig. 14, the tension arm back to the position there shown, the knotter also returning to its initial position. The needle. then moves laterally from the position shown in Fig. 17 to that in Fig. H to repeat the knotting operation.

The knotted ends and the severed ends, however, at completion of the operation are stripped or displaced to clear the way for the next action of the knotting mechanism. The severed end of the old warp, which is held by the clamping rod 3), and hangs down over the separating screw d, is cast backward by a mechanically operated swinging displacing arm in (Figs. 11 and 12) which is secured to the end of a short shaft in, journaled upon the carriage parallel to the needle and knotter. The opposite or rear end of this shaft has the pin 2.0 which is jointed to the upright lever ":0 pivoted upon a carriage to, and pressed against the face of the actuating cam w by the spring w". The arm w has quite a range of upward movement between the clamp b and the separator rod and its actuating cam permits the spring to give it a quick, sharp throw upwardly just after the knot has been formed and the end severed, to strip the short severed end from the separating screw and throw it over and back of the clamping rod.

While the displacement of this severed end is effected mechanically, other means might be employed For the stripping or displacement of the knotted end and the remaining short severed end, I have shown other than mechanical means, herein pneumatic. Referring to Fig. 11, there is provided the nozzle at, which is properly shaped and positioned to direct an air blast upon the severed end of the remaining warp when the knot has been tied and strip or displace the same from the separator shaft 6. Underlying the nozzle :8 is a second air nozzle m, which at the same time when the knot has been tied and the loop stripper arm withdrawn, directs an air blast against the knotted strands to blow them down and away from the kuotting mechanism.

For the production of the two air blasts, at the proper time the two nozzles are connected to a common air conduit leading to the air chamber m", which is provided with a valved orifice and a valve w controlling the same. The air chamber is provided with air through the conduit w, which (Fig. 2) is connected by the flexible pipe coupling m (Fig. 2) with the air pipe as at the end of the machine. The latter leads from a receiver w in which a constant air pressure of suitable amount is maintained through connections m with the air pump m the latter be ing driven from the driving gear w upon the main driving shaft 2".

At the appropriate time the air pressure, which is constantly maintained in the receiver :0 is momentarily admitted to the conduit and the two nozzles through a short, quick movenu-nt ol the valve :0, which is effected through the alve-actuatral rod an, controlled by the PlVOtOtl arm a? and the actuating cam in.

The air receiver w is provided with a re lief valve m, which is adapted to relieve the pressure therein when it reaches a predetermined amount. The relief valve therefore in connection with the pump provides means for maintaining a substantially constant pressure in the receiver.

The construction of the knottcr shown is especially simple and. convenient, since the two hook-shaped members while normally confined within the rotary sleeve, may be readily withdrawn as a unit therefrom by merely unscrewing the tl'neaded cap shown in F 19.

Vhile I have shown and described one form of my invention, it will be understood that the same is not limited to the details herein disclosed, or to the specific means herein described for securing adaptability of the action of the knotting mechanism to the irregular or different s acing of the Warp threads, or to the speci c adaptation herein made of various features of the invention, but that extensive modifications may be made therein without. departing from the spirit of my invention.

Claims:

1. A warp-uniting machine having means for supporting a pair of warps, warp-uniting mechanism, means for causing progressive relative movement between the warps and said uniting mechanism, means for causing relative compensating adjustment between the uniting mechanism and a warp support, and means for throwing in or out of operation said adjustment causing means with reference to either warp support.

2. A warp-uniting machine having warp:

' reference to the threads of either warp, and

means whereby the motive means may be placed in operative relation to either warp carriage.

3. A warp-uniting machine having warpuniting means, means for supporting a pair of warps, motive means for adjusting the relative position of the uniting means with reference to the threads of either warp, and means whereby said motive means may be thrown into engagement with reference to one warp support and out of engagement with. reference to the other.

&. A warp-uniting machine having warpuuiting means, means for supporting a pair of warps, compensating mechanism for adjusting the position of either warp support relatively to the uniting means, a shiftable gear for applying said mechanism to the adjustment of either warp support, and means whereby said gear may be shifted.

5. A warpuniting mechanism having means for supporting a pair of warps, warp thread adjusting mechanism, means for me chanically operating said mechanism, means also for manually operating the same, and means for placing said mechanism in operative relation with reference to either warp support.

b. An organized machine for tying warp threads having in combination devices for supporting two warp sections, thread tying mechanism, two sets of warp thread engaging devices adapted to act progressively to engage with the threads of the respective warps and present successive pairs of threads one from each warp to the tying mechanism, and instrumentalities to com pensatingly adjust the relation of the thread engaging devices to the foremost unjoined threads.

7. A warpuniting machine having warpuniting means, a plurality of warp supports, shiftable means for adjusting the position of said uniting means relatively to either of said warp supports, and manually operable means for shifting said adjusting means and also for operating thesame.

8. A warp-uniting machine having warpuniting means, compensating means, manually operable means adapted, when moved in one direction, to place said compensating means in operative relation to one warp, when moved in the opposite direction, to place the same in operative relation with reference to the other warp and, when turned, to actuate said compensating means.

9. A warp-uniting mechanism having warp-uniting means, means for supporting a pair of warps, compensating means, driving means, and rotatable manually operable means adapted when turned to actuate said compensating means, when moved laterally to change the operative relation of said compensating means and the warp supports and when shifted axially to control the said driving means. i

10. A warp-uniting machine having an upright support, a swinging head thereon and warp-uniting mechanism upon said head.

11. A warp-uniting machine having a support, warp-uniting mechanism thereon, and means permitting the adjustment of said mechanism to an upright position to facilitate movement of the machine and permitting also its adjustment to a laterally displaced position to overhang a loom.

12. A warp-uniting machine having a base or supporting member and warp supporting parts upon said supporting member, said parts being laterally adjustable with reference to the base whereby they may be sustained above the same for facility in moving the machine or moved over or toward a loom for facility in operation.

13. A warp-uniting machine having a supporting member, a warp holding means, warp-uniting means, and means for adjusting said holding means and uniting means upon the supporting member, said adjusting means including a worm and a worm gear.

14. A warp-uniting machine having a base, a head adj ustably mounted thereon for swinging movement, warp-holding means and warp-uniting means upon the head and driving means for the same upon the base.

15. A warp-uniting machine having warpuniting means and means, including a flexible driving member, adapted for connection with a driven member upon an adjacent loom for driving the warp-uniting means.

16. A warp-uniting machine havin warpuniting means, a driving shaft extending from either end thereof, and a driving coupling adapted to be placed upon either of said shaft ends and to be coupled about an adjacent driven element.

17. A warp-uniting machine having warpuniting means, means for causing relative movement between the uniting means and warp threads to permit the progressively advancing action of the former upon the latter, and variable speed transmission means to adjust the rate of movement according to the spacing of the warp threads.

18. A warp-uniting machine having warpuniting means, means for causing relative movement between the uniting means and the warp threads, variable speed transmission means, a gage, and means to adjust said transmission means with reference to the gage and according to the spacing of the warp threads.

19. A machine for operating upon warp threads having an operating mechanism, means for causing progressive relative movement between the operating mechanism and the warp, means for causing a compensatii'ig movement between the operating mcchanisi'n and the warp from one end thereof to the other, and means for ad justing the rate of said movements to correspond to the spacing of the warp threads 20. A warp uniting machine having warp uniting means, means for causing relative movement between the uniting means and the warp threads to permit progressively advancing action of the former upon the latter, and variable speed transmission means for adjusting the relative movement according to the. spacing of the warp threads, said means comprising a friction roll, a friction disk, and means for adjusting the roll to contact with the disk at different radial distance from its center.

21. A machine for operating upon warp th reads having operating mechanism, means for causing progressive relative movement between the operating mechanism and the warp from one end thereof to the other, and means for adjusting the rate of movement to correspond to the spacing of the threads.

22. A knot tying mechanism having a knotter provided with a rotary looping hook, a hook rotatable therewith but separable therefrom, means to hold the strands while the loop is formed and thereafter to lay the strands between the looping hook and separating hook, and means thereafter to sever the strands between the knotter and the holding means.

23. A knot tying mechanism having a knotter, rotary strand severing means moving in the general direction of the threads during engagement of the latter by the knot ter, and means for moving the threads into the path of the severing means after the formation of the loop by the knotter.

M. A knot-tying mechanism havim means for holding distended two sets of warp threads, knotting means and means for positioning a pair of threads for engagement with the knotting means, said positioning means being movable during the tying of the knot with reference to the knotting means.

25. Means for knotting together separate threads comprising in combination means to support two distinct and separate threads each at a plurality of separated points in parallel relation, a rotatable tying bill, means for opening and closing said tying bill, and means for effecting the moving of two separate and distinct threads into the path of the open tying bill.

26. A threadtying mechanism comprising a rotary looping book, a separating hook adapted to rotate therewith but separable therefrom, positioning means adapted to lay a thread into the rotary loopin r hook for the formation of a loop and by urther movement to assist in the laying of the thread between the separating hook and the looping hook preparatory to the stripping of the loop.

27. A warp uniting machine having means for holding distended two sets of warp threads, knot tying means, a drawing needle for selecting a thread from each warp and drawing the selected pair into engagement with the knot tying means, and means for moving said needle with reference to the knot tying means during the tying of the knot to assist in forming the latter.

28. An organized warp uniting machine having in combination thread uniting mechanism, the latter including a rotary tying member, devices for holding two unleased warp sections, independent thread separating means for engaging and separating the threads of the two warp sections, and a common thread engaging de vice for engaging and taking two separated threads, one from each warp.

29. A knotting mechanism having devices to hold a pair of threads in operative relation to a tying bill, a tying bill mounted to turn about an axis, mechanism to open said bill, a thread guide plate located transversely of the threads, a hooked stripping member with mechanism to impart to the same a knot-stripping movement across and in close proximity to the thread guide plate and from the opposite side of the threads against the threads to draw the latter by a wiping action across the edge of the plate, and means to hold clamped the thread portions which extend beyond the plate on the opposite side thereof from the stripper.

30. Knot tying mechanism comp-rising in combination means separately to support two distinct and separate threads each at a. plurality of separated points and in a spaced relation with respect to each other, a knot tying device having a rotary tying bill, devices to take said two threads from their defined position of spaced relationship and to bring them together in operative relation to said tying bill, mechanism to open said bill, a thread guide plate located transversely of the threads, am hooked stripping member mounted to turn on an axis and having mechanism to impart to the same a knot-stripping turning movement to move the same across and in close proximity to the thread guide plate and from the opposite side of the threads against the threads to draw the latter by wiping action against the edge of the plate, and means to hold clamped the thread portions which extend beyond the plate on the opposite side thereof from the stripper.

31. A knot tying mechanism having a knotter for forming a loop in a thread strand, means for positioning said strand with reference to the knotter, means for tensioning the strand during the formation of the loop, while slackening the tension after the formation thereof to assist the stripping of the loop from the knotter.

32. A warp-uniting machine having means for holding distended a series of warp threads, knotting means, means for positioning a pair of threads with reference to the knotting means, and additional means for tensioning said threads during the knottying operation.

38. A warp-unitin machine having means for holding disten ed a series of warp threads, knotting means, means for posltioning a pair of threads with reference to the knotting means, and a variable tensioning device for ohan ing the tension upon the threads during t e knot tying operation.

34. In a knot-tying mechanism, in combination, thread holding means, a rotatable tying bill rotatable about an axis transverse to the general direction in which the threads are held, a thread guide, a stripping means located between said bill and said guide and means for moving said stripping means against the threads to strip the knot from the bill when the latter reaches a position pointing approximately in the general direction in which the threads lie, thereby to wipe the knotted ends into the space between said stripping means and said guide.

35. In a knot tying mechanism, the combination with a knotter having rotary separable loop-forming members, of positioning means for positioning a pair of threads with reference thereto, thread tensionin means ada )ted to tension the threads during formation of the loop but to slacken the tension on the formation thereof.

36. In a knot tying mechanism, the combination with a knotter having rotary separable loop-forming members adapted to separate to receive and hold the strands between them after the formation of the loop, tensioning means to tension the strands during the formation of the loop but to slack the tension on the loop after the strand has been seized between the separable members.

37. In a knottying mechanism, the combination with loop-forming means, means to seize the thread andhold the same after formation of the loop pre aratory to the striping of the loop over t is held thread, means or tensioning the thread to assist in forming the loop, while slackening the tension on the loop on the seizure of the thread.

38. A knot tying mechanism having knottying means comprising means for forming a loo in a pair of threads, means to seize the t read and hold the same after formation of the loop and preparatory to the stripping of the loop over the held threads, means for tensioning the threads to assist in forming the loop, while slackening the tension on the loop on the seizure of the threads, and means for severing the threads adjacent the held ends.

39. A knot-tying mechanism having loopforming means, means for seizing the thread and holding the same after the formation of the loop preparatory to the stripping of the loop over the held thread, means for posi tioning the thread for engagement by the loop-forming means, and means for severing the held thread between the holding means and positioning means after the formation of the loop.

40. A knot-tying mechanism having loopforming means, means for seizing the thread and holding the same after the formation of the loop preparatory to the stripping of the loop over the held thread, means for holding the threads with reference to the loop-forming means, means for stripping the loop over the held thread end, and means for drawing the thread strand while the formed knot is held by the stripping means to tighten the knot.

41. A knot-tying mechanism comprising a rotatable tying-bill arranged to be opened and closed, mechanism to open and close the tying-bill, a thread guide and a stripper pivoted to turn about an axis and move across the path of the threads engaged by the tying-bill to engage the threads beyond the knot and wipe them against the guide at one side of the axis of the tying bill and into the intervening space thereby stripping the knot by the resultant pull on the threads.

42. A warp-uniting machine having means for holding distended two sets of warp threads, knot-tying means, means for positioning a pair of threads with reference to the knot-tying means, movable knot strip ping means and stationary guiding means cooperating therewith.

48. A knot tying mechanism comprising a rotatable tying bill having means to open and close, guide means to position the thread ends to be engaged by the tying bill in the initial formation of the loop, means to turn the tying bill, means to open the same, means to move said guide means to place the thread ends between the parts of the open tying bill, means to sever the thread ends close to the end of the tying bill and means to tension the thread ends.

44. A knot-tying mechanism having thread-holding means, knot-forming means, a swinging knot stripper, and a swinging tension bar cooperating therewith.

45. A knot tying mechanism comprising a rotatable tying bill having jaws to open and close, guide means to position the thread ends to be engaged b the tying bill in the initial formation of e loop, means to turn the tying bill, means to open the jaws of the tying bill, means to move said guide means to place the thread ends between the jaws of the open tying bill, means to sever the thread ends close to the jaws of the tying bill, means still further to turn the tying bill, a stripper, and means to move the same at about the same time as the last mentioned turning movement of the tying bill, to strip the loop over the ends held by the tying bill.

-16. In a knot-tying mechanism the combination with knot-tying means, of pneu matic stripping means for displacing the thread ends.

47. In a kn0ttying mechanism, bin-ation with knot-tying means, severing means, and pneumatic means displacing the severed ends.

48. In a warp-uniting machine, the combination with means for holding in close proximity the threads of two warps, threaduniting mechanism, of thread severing means, and pneumatic means for displacing the severed ends.

490111 a knot tying mechanism, the coinbination with thread uniting means, of pneumatic means for displacing the united ends.

50. In a knot tyin mechanism, the combination with threa -tying means, of sev erin means, pneumatic means for displacing netted ends, and pneumatic means also for displacing severed ends.

51. In a knot t ing mechanism, the combination with t read-uniting means, of thread-severing means, pneumatic means for displacing one severed end, and mechanical means for displacing the other sev ered end.

52. A machine for operating upon warp threads having driving means for giving a relative traversing movement between the operating means and the warp from one end thereof to the other and variable speed transmission means for adjusting the rate of movement of said driving means with reference to the spacing of the warp threads.

53. A Warp uniting machine having thread uniting means, thread severing means, pneumatic the comof thread for strlpping means cooperat ing therewith, and pressure-creating means for supplying pressure to the pneumatic stripping means mounted upon the machine and driven therewith.

54. A knot tying mechanism having pneumatic thread-stripping means for displacing the thread ends and valved means for suitably timing the action of said stripping means.

55. A warp uniting pneumatic thread-strippmg means, for displacing the thread ends, pressure creating means upon the machine and driven there with, an air receiver connected to said strip machine having means and said pressure-creating means maintaining a substanping means, and tially constant pressure in said receiver.

56. In a warp-tying machine the combination with a traveling carriage bearing knot ting mechanism, of means for independently supporting the warps to be tied, and means for positively moving each of said warp supports relatively to the knotting mechanism and differentially with reference to each other.

57. lhe combination with warp tying means, of threadplacing means, means for supporting a pair of warps, means for separating the threads thereof prior to the action thereon of said thread-placing means, and means for giving compensating adjustment to the position of the w'anp-tying means relatively to the warp.

58. In a warp-uniting machine the combination of warp-uniting means, of iI'lQtlliS roi'nprising a rotary knotter for causing relative movement between the same and the warp threads to permit progressively ad vancing action of the former upon the latter, thread-drawing means for positioning the threads relatively to the knotter, thread separating devices for separating the same prior to the action of the drawing means and means for causing relative compensating adjustment between the knotter and the warp threads.

59. In a warp-uniting machine the combi nation of warp-uniting means, of means comprising a rotary knotter for causing rela tive movement between the same and the warp threads to permit progressively advancing action of the former upon the latter, threaddrawing means for positioning the threads relatively to the knotter, threadseparating devices for separating the same prior to the action of the drawing means and means for causing relative compensating adjustment between the threads of the two warps.

60. A warp-uniting machine having warp uniting means, means for supporting a pair of warps, means for causing the travel of said warp-uniting means along the threads of said warps, and means for manually adjusting one of said warps while the other remains stationary.

61. The combination with means for supporting two threads at two points in their lengths, of means located between said supporting means for forming a knot, and a stripping member mounted to turn on an axis also located between said supporting means, means cooperating with said stripping member to clamp the knotted threads and mechanism to move said stripping member to engage the threads beyond the knot and clamp the same and remove the knotted ends from said knot forming means by the resultant pull on the threads,

i so

62. An organized knot tying mechanism comprising in combination means to support two distinct and separate threads each at a plurality of separated points, the threads being in a general parallel but spaced relation with respect to each other, a knot tying device having a rotatable tying-bill with mechanism to open and close the same, means to take said threads from their de fined position of spaced parallel relationship and to position them together in operative relation to the rotatable bill to be taken by the open bill during the rotation thereof and means to operate said tying-device to tie said threads into a knot.

63. In a warp-tying machine, in combination, means for supporting two warps; a carriage; a thread selecting means and a tying mechanism mounted on said carriage; and means for imparting a feed movement to one of said warp-supporting means with relation to the thread-selecting means.

64. In a warp-tying machine, in combination, means for supporting two warps; a carriage; thread selecting means and a tying mechanism mounted on said carriage; means for advancing said carriage with relation to one of said warp-supporting means; and means for moving the other warp-supporting means with relation to the carriage.

65. In a warp-tying machine, in combination, means for supporting two warps; a thread selecting means, a tying mechanism; means for actuating said selector mechanism and said tying mechanism, and for advancing them with relation to one of said warps; and means for moving the warp-supporting means for the other warp with relation to the thread-selecting means.

66. In a warp-tying machine, in combination, means for supporting two warps; a warp tying mechanism; means for advancing said warp tying mechanism with relation to one of said warps; means for actuat ing the warp tying mechanism; and means for moving the other of said warps with relation to the warp-tying mechanism.

67. In a warp-tying machine, in combination, means for supporting a warp; means for taking a thread from said warp; means for tying together said thread and a thread from another warp; and means for moving said warp-supporting means with relation to said tying means.

68. In a wa -tying machine, in combination, means or supporting two warps; means for tying together two threads, one from each of said warps; and means for moving one of said warps with relation to said tying means.

69. In a warp-tying machine, in combination, a bed; a pair of warp clamps upon said bed; a warp carriage supported adJacent to said bed, and provided with a pair of warp clamps; and a warp-tying mechanism arranged to travel. upon said bed between said clamps.

70. In a warp-tying machine, in combination, means for supporting two warps in substantially parallel planes, the threads of each warp lying in the same plane; means for taking a thread from each of said warps; means for severing said threads; means for bringing said threads together, side by side, at a. uniting means; and means for uniting said threads.

71. In a mechanism for joining together the ends of two warps, in combination, means for selecting a thread from each of said warps; means for separating said se lected threads from their adjacent warp threads; means for uniting said selected threads by tying; and means for presenting the selected threads to said uniting means to be united.

72. In a warp tying machine the combination with means for supporting a pair of warps, of tying mechanism, severing means and pneumatic means for displacing the severed strands clipped from the knot.

73. In a warp tying machine, the combination with means for supporting a pair of warps, of tying mechanism, severing mechanism, driving means for the machine, and pneumatic means for displacing the strands severed from the knotted ends, said pneumatic means being also driven by said machine driving means.

74. An organized machine to separate threads singly from each of two warps each of which has its component threads normally irregularly spaced in an unleased sheet and to tie together selected threads from each warp, said machine embodying in combination warp holding means to hold crosswise sections of two such warps, a retary knotter, a support therefor, feeding mechanism to cause a relative traverse between said support and said warp holding A means lengthwise of the latter and crosswise the two warps, devices associated with said knotter and adapted during said traverse successively and progressively to select threads singly from each of the warps and then to present the selected threads to the knotter, and instrumentalities adapted to adjust to the spacing of the warp threads the action of the associated thread-selecting and conveying devices and knotter in their said relative traverse; thereby to insure the progressive and successive selection of pairs of threads, one from each warp, and the progressive presentation of such selected threads to the knotter and to compensate for the varying spacing of the threads of each warp and for the variance of the two warps in total widths thereof.

75. An organized machine for tying the ends of warp threads comprising in combination a plurality of warp supports for

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