US1463401A - Machine for and method of uniting threads or cords - Google Patents

Description

July 31, 1923. 1 1,463,401

. W. H. PEARSON ET AL MACHINE FOR AND METHOD OF UNITING THREADS OR CORDS Filed April 12, 1921 6 Sheets-Sheet l July 31, 1923. 1,463,401

w. H. PEARSON ET AL MACHINE FOR AND l VIETHOD OF UNITING THREADS OR CORDS Filed April 12. 1921 6 Sheets-Sheet. 2

July 3l, 1923. 1,463,401 w. H. PEARSON ET AL v MACHINE FOR AND METHob OF UNI'TING THREADS OR corms Filed Anr il 12. 1-921 6 sheets-sheet 5 July 31, 1923.

w. H. PEARSON ET AL MACHINE FOR AND METHOD .OF UNITING THREADS OR CORDS Filed April'l2, 1921 e sheets-sheet 4 i 71 I I m W Snow wot WM July'31, 1923. 1,463,401

w. H. PEARSON ETYALI momma: FOR AND METHOD OF UNIT-ING THREADS on 003205 Filed goril 12, 1921 s Sheets-Sheet 5 nveuto'w July 31, 1923.

w. H. PEARSON ET AL MACHINE FOR AND METHOD OF UNITING THREADS 0R CORDS Filed April 12, 1921 6 Sheets-Sheet 6 4 nbentqz Patented July 31, 1923.

UNITED STATES PATENT v or F l-1c 3 WILLIAM H. PEARSON AND TIMOTHY 'J. KELLY, E PASSAIC, NEW JERSEY, Ass snons T0 BRIGHTON MILLS, A ooRroRAmoN on NEW JERSEY.

MACHINE FOR AND METHOD OF UNITING THREADS OR CORDS.

To all whom it may concern:

Be it known that we, 'WILLIAM H. PEAR- SON and TIMOTHY J. KELLY, citizens of the United States, residing at Psassaic, in the county of Passaic and State of New Jersey,

have made certain new and useful Improvements in Machines for and Methods of Uniting Threads or Cords, .of which the following is a specification.

The invention relates to a novel mechanism for uniting threads or yarns in weaving or other textile or cord age work while avoiding forming :a knot therein which involves the entire thread or yarn and maintaining or reestablishing at said juncture :or place of union the amount or degree of twist which is normal or standard for the remainder of the thread or yarn.

Objects and advantages of the invention will be set forth in part hereinafter and in part will be obvious herefrom, or may be learned by practice with the invention, the same being realized and attained by means of the instrumentalities and combinations pointed out in the appended claims.

The invention consists in the novel parts, constructions, arrangements, combinations and improvements herein shown and described. l

The acco'mpanyin drawings, referred to herein and constituting a part hereof, illustnate one embodiment of the invention, and together with the description, serve to explain .the principles of the invention.

Of the drawings Fig. 1 is a top plan of a machine or mechanism embodying the invention;

Fig. 2 is a side elevation looking at Fig. 1 from the bottom of the sheet; V Fig. 3 is an enlarged, fragmentary detail of one of the thread holding clamps shown at the right-hand end of Fig. 1;

Fig. 4 is an enlarged detached, end elevation of the head of the winding reel Shown at the upper central part of Fig. 1;

Fig. 5 is a vertical, transverse section, taken on line -5-5 of Fig. 1, looking in the direction of the arrows; Fig. 6 is a vertical, transverse section, so taken on line 6+6 of Fig. 1, looking in the direction of the arrows;

Fig. .7 is a vertical, transverse section Application filed April 12, 1921. Serial No. 460,725.

taken on the line 77 of Fig.1, nonem the direction of the arrows;

Figs. 8 and 9 are fragmentary top plan's,

similar to Fig. 1, but somewhat diagram-- matic, showing steps in the uniting of the threads;

Fig. 10 is afragmentary detail, largely in section, of a different form of control for the twisting mechanism;

Fig. 11 is a fragmentary top planfof a workman operated drive for the machine;

Fig. 12 is a vertical section taken on line 12-12 of Fig. 11; Fig. 13 is a fragmentary view, partly in section and partly in vertical elevationof "a combined splicing and winding mechanism; Fig. 14. is a fragmentary elevation, looking at Fig. 13 from the left; Fig. 15 is an enlarged, fragmentary de tail on line 151'5 of Fig. 13;

Fig. 16 is a fragmentary detail of one form of device for lifting and supporting a reel or spool;

Fig. 17 is a sectlon on line 171 7 of -Fig. 1-6; and

Fig. 18 is a detached detail of one form v l of spool lifting device. a

In the weaving of many kinds of fabrics, and in other textile or cordage work, is advantageous or essential that the ends of two threads or yarns be firmly. and positively united without knots or like protu berances or'irregularities and that the threads.

or yarns at the place of such union or juncture be maintained of substantially-the nor- Y mal or standard size and strength of the rc-.

mainder of the thread or cord by reestabl is'liing at the place of union the nor'i-nalbr standard amount or degree of twist.

The presentinvention provides a novel mechanism for effecting the above-described function or operation in a positive, exact, easy and expeditious manner, and provides a novel meansfor and method of, effecting the same. l

Referring broadly to'the present preferred embodiment of the invention, there are provided devices for holding each of two threads or yarns to be united at two definitely spaced-apart oints, and, cooperating therewith, devices for uniformly and com;

ple e y l llt istillg the strands q mp s ng ends being then spliced or united by a small knot, and for so treating each such corresponding pair of strands at predetermined or equidistantly spaced-apart points along the untwisted part, without changing the length of the untwisted part. Cooperating therewith are means for exactly and posi tively restoring the normal or standard amount or degree of twist, by unwinding the aforesaid portion of one of the threads wherein the untwisting has been stored. All these functions are effected without any useless and harmful twisting or untwisting of other portions of the thread, cord, or like material.

Other features of the invention will be first described in connection with the following detailed description of the present pre ferred embodiment; and it will be under stood that so far as concerns certain aspects of the invention, the features already described may be utilized apart from each. other, or in other relations or combinations without departing from the invention.

The invention finds one of its chief and most valuable commercial applications in the manufacture of fabric for cord tires for motor vehicles for uniting, preparatory to weaving, the ends of the relatively heavy cords which constitute the warp of such tire fabrics, and the terms thread or yarn used herein will be understood. to include the cords used in such tire fabrics.

Referring now to the details of the embodiment of the invention illustrated by way of example in the accompanying drawings, a machine is provided with a base 1, and preferably with an understructure whereby it may be readily moved from place to place to operate upon reeled or spooled threads and yarn in working position, as for example upon creels, the threads or cords from which are being supplied to a beamer or loom. Such understructure, as shown, comprises legs 2, cross-pieces S and wheels or casters 4, although such structure may be of any deired form.

Referring now in detail to the mechanism mounted upon the general base 1, two thread clamps 10 and 11 are provided, these clamps being conveniently, though not necessarily, paired together in their mounting, one of the clamps engaging the end of one of the threads to be united and the other clamp engaging the other thread beyond the point at which it is to be united to the first-mentioned thread As so preferably embodied, these clamps are supported on a base 12, which is mounted on the frame 1, and has projecting upwardly therefrom standards 13 and 14, in the upper ends of which there is mounted a clamp-supporting rod 15. The clamp 10 comprises a fixed aw 16, and a cooperating springpressed jaw 17 which is slidable along the rod 15. The clamp 11 comprises a stationary jaw 18 and a cooperating spring-pressed jaw 19, which is slidably mounted on the rod 15. A helical spring 20 is coiled in compression about the rod 15, and yieldingly presses the jaws 17 and 19, respectively, against the corresponding cooperating j aws. These clamping jaws and two cooperating clamp ing jaws or like devices to be later described, delimit a desired or predetermined length of two cords or threads wherein the strands are untwisted, cut separately at different points, the strands of the tWo threads are tied together, and the whole retwisted.

For the purpose of varying the delimited length of thread or cord, the mechanism just described is mounted to be movable to and fro on the base 1, and may be fixed in any such desired or predetermined position. As embodied, slots 22 and 23 are formed in the base 1, (Figs. 1 and 7) and pins or rivets 24-. and 25 extend through these slots. At their upper ends, these pins are fixed to a cross-bar 26 above the base 1, and at their lower ends to a cross-barQ? below the base plate 1. A set screw 29 is threaded into the cross-bar 2 6 and binds on the plate 12'to hold the mechanism in a desired position, to which position it has been slid along the base 1.

At the opposite end of said delimited length of the two threads or cords which are to be united, other suitable thread holding or clamping devices are provided. As embodied, a clamp 34 is provided for the free end of one of the threads, that is, to mark the delimited length at such free end. This clamp is provided with a stationary jaw 35, mounted upon a shaft 36, and with a spring pressed jaw 37, mounted upon but movable along the shaft, and cooperating with the jaw 35. A helical spring 38 is coiled around shaft 36 in compression between the jaw 37 and a collar 39 fixed on the shaft. Shaft 36 is journaled in a bearing 40, carried on the machine frame, or on a housing 41, which may conveniently be employed to enclose certain of the mechanism which is later d scribed. I

The mechanism for holding the corresponding end of the delimited length of the other thread or cord comprises a orum 41-2 fixed on a shaft 43, which shaft is likewise journaled in the housing 41. Drum 42 is provided with flanges 44 and 45, between which the thread may be wound upon the drum, later described herein. The flange 44; is provided with a slot 46 into which the form, a pinion 48 is fixed on shaft 36, and

a pinion 49 is fixed on shaft 43. Intermeshing with both of these pinions is a gear wheel 50, fixed on a shaft 51, which shaft is journaled in the housing 41. A motor 52 may be utilized for driving the mechanism, and as shown the pinion 49 is fixed directly on the motor shaft, or the shaft 43 may be regarded as a continuation of the motor shaft.

Means are provided for controlling the extent of rotation or number of revolutions of the drum 42 and clamp 34, so as to entirely untwist the strand in the delimited length of the two threads or cords and to stop the untwisting action at that point, and in conjunction therewith, means for restoring positively the same amount of twist to the strands after those of the two cords'have' been tied together. In the embodied form of such means, the shaft 51 is screw-threaded as shownat 54, and a screw-threaded nut 55 travels on the shaft. The nut 55 also travels on a longitudinally movable rod 56, which is slidably mounted in bearings 57 and 58. The power circuit for motor 52 is provided with a pull-switch or socket 59, of any suitable construction and manner of operation having a cord or chain 60, which is connected to a bent end 61 of the rod 56. A hand lever 63 is pivoted within or on the housing 41 at 64, the lower end of the hand lever being connected to the switch cord at 65. A stop 53 is adjustably carried on rod 56, with which the traveling nut 55 engages to throw off switch 59. A cable 66 passes from'the switch to the motor 52, and the power circuit is indicated diagrammatically at 67.

In accordance with one feature of the invention, the retwist is imparted to the united strands of the two threads or cords by unwinding the thread from the drum'42, and in connection therewith,-means are provided for taking up or rewindine; the thread unwound from drum 42. In the embodied form thereof,aspool or reel holder 7 5 is provided, having a shaft 76 and a seat'7j7 for the reel. The shaft 7 6 is journaled in an extension 7 8 from the housing 41, and fixed on shaft 76 is a pulley 79. A belt 80 runs over this pulley and also over a pulley 81, fixed on shaft 43. One of the reels carrying one of the cords'or threads to be united is mounted on the. reel holder 75- The drive is a friction drive'which'willapay off the thread as it is wound on drum42wand will take iti up again as it is unwound from the drum. A double pole hand switch is shown for reversing motor 52, thereby manually controlling the winding movement in both. di-

rections if desired, and such a switch is shown at 82 in Fig. 1. 'VVhen this switch is used, the switch 59 and the automatic'con- H 75 trolling mechanism therefor can be dispensed with. i

Means are provided for instantaneously lo eating the separated points at which the re spective strands of the two cords or threads are to be severed, and, as embodied, a pluralityof pins, 84 are placed in selected holes 85 in the base 1. The pins 84 may also be I used in tying the knots in the strands of" the cords or threads.

The manner ofoperation of the hereinbefore-described mechanism is substantially as The thread'or cord w reel a has its end placed in the spring clamp 34, and the thread is then placed at the other end of the predetermined delimited length in the clamp 11. The thread y from the spool or reel Y) has its end placed in the spring clamp 10, and the thread is placed, at the other end of the predetermined delimited length, in one of the' slots 46' in flange 44 of the. drum 42. Thejdelimited lengths of the threads 00 and 'y are thus'held at both ends;

The'lever 63 is thrown by hand, turning the currenton to motor 52, and'the spring clamp 34 and the drum 42 are'rotated in the same direction, the cord or thread y winding on the drum 42 one convolution for each r0- tation of'untwisting'motion imparted to the delimited'length ofthe threads 00 andy. As the untwisting movement of the mechanism begins and. proceeds'the'n'ut 55 travels along the screw thread 54, and slides along the rod 56 until it strikes the adjustable stop 53. VVhen'the nut engages the stop 53, the rod 56 is slid endwise, and switch 59 is actuated and thereby throws off the current and stops the motor 52, when the strands of the'ndelimited portions 00 and y of the threads or cords a and 7) have been'com-p'letely untwisted. The stop 53 may be set by calculation or by experiment to stop-the inechanismjust when thestrands are completely untwisted.

The slot 46, as already statedyclampsthe thread and prevents the untwisting going beyond that point Also as the threads begirl to wind on the drum 42 immediately at I the flange 44, there is no opportunity forr'e-l I verse twist in the thread.

The untwisted strands are then severally cutoff in pairs,"thatis, one strand from each of the cords orl threads, substantiallyzi-n a line with the respective indicating posts 84,

that one strand from one threadand a 5 corresponding strand from the other thread the retwisting being supplied by the descent of the weight when the foot lever is released. Referring to the embodiment of said mechanism in detail, there is provided on the shaft 51 of the gear wheel a pin-ion 105, and meshing therewith is, a gear wheel 106, fixed on a shaft 107, which shaft is ournaled in bearings 108 and 109, mounted on the machine frame. Fixed on shaft 107 is a drum 110, about which is wound a cord 111, to one end of which is attached a weight 112, the other end of the cord being attached at 113 to a foot lever 114. I Foot lever 114 is pivotally mounted on the machine frame at 115, and a stop 116 may be provided to limit its upward travel.

Means may be provided for controlling the foot lever both to regulate the amount of the Lin-twisting and retwisting action, and for controlling the lever without the necessity of the workman keeping his foot upon it. As embodied, a detent lever 118 is pivoted at -1-19 on the machine frame and is yieldingl y held to engaging position by a spring 120.

-- A pin 121 serves to limit the movement of the detent lever. A pin 122 is provided on the pedal lever 114, which is adapted to engage with a plurality of notches 123 in the detent lever 118. In operation, the workman steps onlever 114 and depresses it to the required extent to effect theuntwisting of the strands, and when this is completed, lever 114 will be held in that position by the proper notch 123 in: detent' lever 118. When it is desired to effect the rewinding, the workman steps on the detent lever 118, releasing lever 114, and the descending weight 112 will drive the mechanism during the retwisting operation.

In Figs. 13 and 14 a combined thread or .cord splicing and winding machine is shown, and in the embodied form the winding mechanism has a plurality of WlIlCllIlg devices arranged side by side in the machine, the splicing mechanism being movable to and fro along the winding mechanismto bring it successively into convenient operative relation with any desired winding de vice.

So far as concerns many features of the invention, the winding mechanism may be of any desired or convenient form, and as shown herein the reels or spools are arranged horizontallyand one above another, the thread or cord being wound from an upper reel or spool to another located below it.

Referring now to the details of the illustrated form of winding mechanism, this is shown in endview in Fig. 13 as of double construction, that is with one set of. windingmechanisms facing to the right (shown in elevation) and another set of winding mechanisms, facing to the left, (shown partly in elevation and partly in section),

.all being mounted upon one machine frame.

As appears from Fig. 14,- a plurality ofv sets of winding mechanisms or devices are arranged side by side in the machine frame,v and a description of 'a single set ormechanism will be suflicient for all.- Meunt'edon a frame piece 90 area pair of upwardly and outwardly extendingarms 91- and92, having their outer ends recessed, as shown at 93 and 94, respectively, to support a rod 95 upon which a reel or spool 96' is mounted loosely so that the thread may be unwound therefrom. Directly below the mechanism just described, as embodied, a pair of arms-97 and 98 extend from a sleeve 99, Which-sleeve is mounted to swing loosely on a rod or shaft 100, supported on the machine frame. The arms 97 and 98 are formed ati-their outer ends to hold a rod upon which the windin spool is mounted to rotate freely, there being movable to receive and discharge the spools. As embodied, this spool-supporting rod 101 is mounted in arecess in the end of the arm 97 and a pm 102 passes through the end of the arm and the rod, the-rod being thus pivoted to swing outwardly, so that the spool or reel may be readily placed there'- on and removed therefrom. y 1

The arm 98 is cutaway at its outer end (Figs. 13 and 16) to form a seat for the rod 101, and a hook 104 is pivoted at 109 on the arm 98, and is adapted to swing; don/1 1'- wardly to hold the spool supportingrodlol in position and to be swung: upwardly to release the rod, so that the rod may be swung outwardly for the purpose of changing' spools as described. M

The winding is effected in the presentembodiment by means. of friction wheels or discs 106-, which are located just beneath a reel or spool 107, mounted uponthe ro-d 1 01, when in operative position. The wheel 106 contacts with the, spool 0r reel 107, or.

with the cord or thread thereon, torotat'e the spool and effect the winding operation. The wheel .106 is fixed on a.shaft 105,journaled in the machine frame, the shaft being driven by any suitable driving means Means are provided in the embodied form for lifting the spool'or reel 107- clear of the winding wheel 106 and maintaining it ,in

this elevated or ino erativ'e aosijtion durin C the changing of spools or reels. As em bodied. referring first to Figs. 18,14 and 15, a bracket 110 extends downwardly (Fig.

15) from the support 111 for the rod or shaft 100, and journaled in this bracket is a shaft 112,-to which is fixed a hand-lever 113. Fixed or integral withjshaft 112is;a cam .114, positioned beneath; the arm 98.

When hand lever 11?) isfdrawn downwardly and to the left from the position shown at the left hand side of Fig. 13-, the. corresponding arms, 97 and 98 are swung upwardly, lifting, the spool or. reel away from the winding wheel 106 to convenient position for changing the spools, and by moving the hand lever 113 in the opposite direction the spool is again brought down on the winding wheel.

A weighted arm 115 is preferably employed to press the spool against winding wheel 106 to insure effective winding contact or friction, as shown at the left in Fig. 13. The arm 115 may also be utilized, as shown at the upper right hand side in Fig. 13, to hold the spool and spool holding arms in inoperative or idle position. For this purpose, the arm 115 will be swung backwardly beyond shaft and will maintain the reel or spool 107 in elevated position until the entire deviceis swung outwardly and downwardly and arm is again brought beyond shaft 100.

In Figs. 13 (left-hand side), 16 and 17 a different form of mechanism is shown for lifting the spool and its supporting arms for changing the spool or reel. In this form, a wedge or wedged-shaped cam is mounted to slide longitudinally in a guideway 121 in the frame piece 122. A handle 123 projects downwardly or outwardly from the wedge 120. Both the inclination of the cam 120 and of the guideway 121 may be utilized to effect the lifting of the spool. When the handle 123 is pulled to the left in Fig. 16 the spool or reel 107 will be lifted .to the inoperative position, that is, to stop the winding and to permit the spools to be changed, and when the handle 123 is pushed to the right in Fig. 16, the arms 97 and 98 are dropped down and the spool 107 is brought into winding relation with the Winding or driving wheel 106.

In Fig. 14 the right-hand reel or spool 107 is shown in the raised or non-windin position, being retained in that position by its weighted arm 115. The two spools 107 to the left thereof are shown in winding position, that is, in position to be driven by the corresponding winding reels 106.

In the present embodiment, the thread or cord splicing or uniting machine 125 is shown mounted to slide to and fro along in front of a plurality of the winding mechanisms, thereby being brought into convenient operative relation with any desired one of the winding mechanisms, and for this purpose, supporting and guiding bars 126 and 127 are disposed longitudinally along the frame of the machine. Bars 1261 and 1262 are employed to impose proper tension upon the thread as it is wound upon the spool 107. A reciprocating thread guide 128 is also usually employed to lay the thread evenly along the spool as it is wound thereon.

In this embodiment, the splicing or uniting machine 125 is mounted upon and so as to slide along the guide bars 126 and 127,

whereby it may be used tosplice the threads or cords therefor, and may be slid in front of any one of the Winding devices, and may be used to splice the threads or cords therefor, and may then be slid in front of another of the winding device for this purpose, and so on to and fro from one winding device to the other as may be required in the work.

In the present form, the base 130 of the splicing machine is extended, and the guide bars 126 and 127 are so positioned that the base 130 rests upon bar 126 and beneath bar 127; thereby forming the desired slidable support for the splicing machine. The splicing machine shown in Fig. 13 is of somewhat different form or appearance from that shown in Fig. 1 (the particular features of which are set forth in a copending application, Ser. No. 488,178 filed July 28, 1921, but the machine of Fig. 1 could be mounted in the same manner by extending the base 1 thereof as shown at 13]. and omitting the legs upon which the machine is mounted as shown in Fig. 2. I

The mechanism renders the work of wind" ing much more easy and expeditious and enables an operative to serve a larger number of winding mechanisms. It leaves the op erative free to watch the winding mechanisms and to have both hands free for the work of splicing or uniting the threads or cords. The splicer may by a simple move ment of the hand be positioned with respect to any particular winding mechanism. The splicing mechanism need not be supported by the operative nor does it require floor space nor to be moved about the floor from place to place.

In Fig. 18, and at the right in Fig. 13, a damping or braking device is shown for preventing the spool of thread 107 coasting or spinning as it is lifted from the friction driving roll 106. In connection therewith is shown a somewhat different form of the spool lifting cam, although the spool brake could be applied to any of the spool raising devices. In this form of the spool raiser, a sliding cam is slidably support ed in a channeled guideway 141, supported on a bracket 142 fixed to the frame. This cam 140 engages beneath the arm 98 in the same manner as cam 120, already described. A rod 143 extends outwardly whereby the cam 140 may be slid to and fro to let the spool down on to the driving roll 106 or to lift it therefrom. A leaf spring 144 is fixed to cam 140 and extends outwardly into frictio-nal contact with the spool 107 and acts as a brake to prevent spinning or coasting of the spool when it is off the friction wheel 106.

The invention in its broader aspects is not limited to the specific mechanisms shown and described but departures may be made therefrom within the scope of the accom panying claims without departing from the principles of the invention and without sacrificing its chief advantages.

What we claim is 1. A mechanism for uniting threads or cords including in combination means for delimiting two equal lengths in the ends of two. threads, means for untwisting the strands of said lengths, and simultaneously winding another portion of the thread and by the unwinding of said portion to restore the twist to the untwisted strands.

2. A mechanism for uniting threads or cords including in combination means for delimiting two equal lengths in the ends of two threads, means for untwisting the strands of said lengths, and simultaneously winding another portion of the thread and by the unwinding of said portion to restore the twist tothe untwisted strands and means for effecting said unwinding.

3. A mechanism. for uniting threads or cords including in combination means for delimiting two equal lengths in the ends of two threads, means for untwisting the strands of said lengths, and simultaneously winding another portion of the thread and by the unwinding of said portion to restore the twist to the untwisted strands and means operating automatically for effecting said unwinding. i

4. A mechanism for uniting threads or cords including in combination means for delimiting in side by side relation two lengths in the ends of two threads, and means for untwisti-ng the strands of the delimited portion of the threads and simultaneously winding an adjacent portion of one thread, the unwinding of said wound port'ion of the thread restoring the normal twist to the untwisted portions after the corresponding strands of the two threads have been reunited.

5. A mechanism for uniting threads or cords including in combination means for delimiting. in side by side relation two lengths in the ends of two threads, and means for untwisting the strands of the delimited portion of the threads and simultaneously winding an adjacent portion of one thread, the unwinding of said wound portion of the thread restoring the normal twist to the untwisted portions after the corresponding strands of the two threads have been reunited and means for determining the extent. of the untwisting and twistmg. g

6. A mechanism for uniting threads: or cords including in combination means, for delimiting in side by side relation two lengths in the ends of two threads, and means for untwisting the strandsof the delimited portion ofthe threads and simultaneously winding an adjacent portion of one thread, the unwinding of said wound portion of the thread restoring the normal twist to the untwisted portions after the corresponding strands of the two threads have been reunited and means operatingflautomatically for determining the extent of the untwisting and twisting.

7. A mechanism for uniting tlireadsor cords including in combination meaiisrto'r delimiting two equal lengtl is in the. ends of two threads, means for untwisting the strands of said lengths,and simultaneously winding another portion of the thread and said delimited lengths. a

9. A mechanism for uniting threads or delimiting two equal lengths in the endsaof two threads, means for untwisting the have been reunited and means for varying .95 cords including in combination means for:

strandsof said lengths, and meanscont-rolled by said untwisting means for restoring the twist to said thread after the untwisted strands of the two threads havebeen united and a plurality of distance; indicating de= vices. for different strands spaced along. said delimited lengtlito indicate points of. Severance and tying of the strands. r

10. A'mechanism for uniting, cords: including! in combination means for delimiting two equal lengths in the. ends; of two threads, means for untwisting, the

th ds. o

strands of said "lengths, and a reversible I rotational device which is rotated in one direction as the strands arev untwisted and is later rotated, in the oppositedirection to restore the twist to the united strands and a plurality of distanceindicating devices for diflerent strands spaced along said delimitedelen-gth to im" dicate pointsof severance and tying of the strands.

11. A mechanism for ui i-itin-g threads: or

cords including in combination means for delimiting in side by ,side relation two.

lengths in the ends of two. threads, and

means for untwisting'the strands Oft1 1 -d -Q-.

limited portion of the threads and simultaneously winding; an adjacent portion. of

one thread,- thennwinclingo-f said wound. portion oil the thread. restoring the normal twist to the untwisted portlons atter the corresponding strands of the two threads tance indicating devices for different strands spaced along said delimited length to indicate points of severance and tying of the strands.

12. A mechanism for uniting three-cs 0r cords including in combination a drum having a thread clamping device, a thread clamp for the same thread spaced away from the drum, tWoclamps for another thread, one

substantially in alinement with the drum and the other in substantial alinement with said other clamp tor the drum thread.

13. A mechanism "for uniting threads or cords including in combination a drum having a thread clamping device, a thread clamp, for the same thread spaced away from the drum,two clamps for another thread, one substantially in alinement with the drum and the other in sub tantial alinement with said other clamp for the drum thread and a plurality of distance indicating derices for different strandsspaced alon said delimited length to indicate points or SQ?- erance and tying of the strands,

14. A mechanism for uniting threads or cords including in con'ibination a drum having a thread clamping device, a thread clamp for the same thread spaced av from the drum, two clamps for another thread, one substantially in alinement with the drum and the other insubstantial aline' ment with said other clamp for the drum thread and means for determining the nun ber of rotations of the drum.

15. A mechanism for unith cords including in combination a drum having a thread clamping device, a thread clamp for the same thread spaced away from the drum, two clamps for another thread, one substantially in alinement with the drum and the other in substantial alinement with said other clamp :tor the drun thread and means operating automatically for determining the numberot rotationsof the drum.

16. A mechanism for uniting threads or cOrdsincluding in combination a drum having a thread clamping device, a thread clamp for the same thread spaced away from the drum, two clampsfor another thread, one substantially in alinement with the drum and the other in substantial alinement with said other clamp for the drum thread and means for varying the distance between the clamps. 17.A mechanism for uniting threads or cords including in combination a drum having a thread clamping device, a thread clamp for the same thread spaced away from the drum, two clamps for another thread, one substantially in alinementwith the drum and the other in substantial alinement with sald other clamp for the drum thread and means for varying the number of rotations of the drum.

18, A mechanism for uniting threads or cords including in combination means for delimiting a length in a thread, means for untwisting the strands in the delimited length and for winding the thread adjacent to the delimited length to prevent undesired twisting action therein.

19, A mechanism for uniting cords including in combination means for delimiting a length in a thread, means for untwisting the strands in the delimited length and for winding the thread adjacent to the delimited length to prevent uncle-- sired twisting action therein and for sub sequently unwinding the wound thread to retwist the delimited length to the correct degree or amount.

20. A mechanism for uniting threads or cords including in combination spaced apart strand nntwisting and twisting devices holding two cords '1 substantially parallel relation and a, plurality of spaced-apart markers located at predetermined points therebet-rveen to indicate points oi severance oi the strands in pairs, one strand of each pair from each core,

The method of uniting two threads without a knot which comprises delimiting two equal lengths in the ends of the two t T eads, untwisting the strands in the dela ited lengths, sinmltaneously winding a portion or one thread adjacent the delimited part, cutting the corresponding sets of strands of the twothreads at different points along the delimited lengths and tying the strands of each set together, and unwinding the wound. portion of the thread to impart the normal or standard twist of the thread to the untwisted and united part of the two threads.

29, The method of uniting two threads without a knot which comprises delimiting two equal lengths in the ends of the two thre ds, untwisting the strands in the delimited lengths, simultaneously winding a portion. of one thread adjacent the delimited part to prevent harmful untwisting of the thread outside said delimited portion, uniting the untwisted strands and retwisting them to the standard or normal twist of the thread.

23. The method oi uniting two threads without a knot which comprises delimiting two equallengths in the ends of the two threads, untwis ing the strands in the delimited lengths, preventing untwisting of the thread outside the delimited length, storing a record of the amount of the untwisting, uniting the untwisted strands of the two threads, and retwisting them to the standard or normal amount of'the thread from said record.

2a. A mechanism for uniting threads or cords including in combination means for delimiting lengths of two cords and means for untwisting the strands of the delimited lengths for uniting them and for retwisting the strands after'uniting and for preventing twisting of a thread beyond said delimited len th. r

A mechanism for uniting threads or cords including in combination means side by side for delimiting lengths in two cords, means for untwisting the strands for uniting them and. for retwisting them after uniting, means for winding a portion of one of said cords as its adjacent portion is untwisted and a plurality of markers arranged diagonally and longitudinally between the two delimited lengths for indicating separated points of severance for respective pairs of strands, one from each cord, so that the various pairs of strands may be united at difi'erent points and the united strands be of uniform length.

26. A mechanism for uniting threads or cords including in combination means for delimiting lengths of two cords, means for untwisting the strands of the delimited lengths for uniting them and retwisting the united strands, and means for winding a thread proportionally to the untwisting of the strands, and means for supplying slack from a spool to said winding means and for taking up the slack during the rewinding.

27. A mechanism for uniting threads or cords including in combination meansv for,

delimiting lengths in the ends of two threads, means for untwisting the strands of said lengths, and simultaneously winding another portion of the thread and by the unwinding of said portion to restore the'twist to the untwisted strands.

28. A mechanism for uniting threads. or cords including in combination means for delimiting two equal lengths in the ends of two threads, means for untwisting the strands of said length and preventing twist in other .parts of the threads and means for restoring the twist after the strands ofthe two threads are united in pairs.

29. The method of uniting two threads without a knot which comprises delimiting equal lengths in the ends of the two threads,

untwisting the strands in the delimited lengths, storing a record in the thread of the amount of the untwisting by winding it the same amount in the opposite direction,

uniting the untwisted strands of the two threads, and retwisting them to the standard or normal amount of the thread from said record.

In testimony whereof, we have signed our names to this specification.

WILLIAM H. PEARSON.

TIMOTHY J. KELLY.

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