US3074439A - Automatic double shuttle loom - Google Patents

Description

Jam 1963 c. D. PARHAM ET AL 3, 74,439

AUTOMATIC DOUBLE SHUTTLE LOOM Filed Oct. 18, 1960 9 Sheets-Sheet 2 l M @MQ a 6 m! 9 Sheets-Sheet a C. D. PARHAM ETA].

AUTOMATIC DOUBLE SHUTTLE LOOM Jan. 22, 1963 Filed Oct. 18, 1960 9 Sheets-Sheet 5 IN V EN TORS gym/Z &

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AUTOMATIC DOUBLE SHUTTLE LOOM Filed Oct. 18, 1960 9 Sheets-Sheet s INVENTORS. (fir/50211 $116018:

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AUTOMATIC DOUBLE SHUTTLE LOOM Filed Oct. 18, 1960 9 Sheets-Sheet 7 @Jsl Jan. 22, 1963 c. D. PARHAM ETAL 3,074,439 I AUTOMATIC DOUBLE SHUTTLE LOOM 9 Sheets-Sheet 8 Filed Oct. 18, 1960 JNVENTORS. mar/wflzi1igZafiiZa/mm& BY Ema; 115 172, m; if A 770/?5 x5.

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Filed st. 18, 1960, Ser. No. 63,421 4 Claims. (Cl. 139-243) This invention relates to an automatic double shuttle loom of the cross picking type wherein, upon exhaustion of the weft supply in the shuttles, the empty bobbins are automatically replaced by new filled ones. Looms of this type are ordinarily provided with but a single magazine for filled bobbins and with means by which, upon exhaustion of the weft in either the upper or lower shuttle, the empty bobbin is replaced by a filled one.

In weaving certain pile loop fabrics, a fine count weft yarn is used as a dummy pick to temporarily support the pile loops, said yarn being eventually removed after the cloth is taken from the loom. In addition, a coarse or heavier weft yarn is used in the fabric for backing. Since there may be a large disparity in the count of the weft yarn used in the bottom shed for the body of the cloth, and the finer temporary loop-supporting weft yarn in the top shed, it follows that the yardage of the yarns for the respective bobbins in the top and bottom shuttle varies in proportion, and therefore it was impractical to place the bobbins in a common supply magazine in the order of required replenishment for production of fabrics of the kind referred to. Accordingly, to weave pile fabrics on the looms as heretofore constructed, the fine or temporary loop-supporting yarn had to be replenished by hand and, notwithstanding automatic replenishment of the coarse or body weft yarn, the looms were actually only semi-automatic in operation.

Our invention has for its chief aim to obviate the necessity for hand replenishment of the fine weft in looms used in the production of loop or pile fabrics, after the manner above described. This objective is realized in practice, as hereinafter more fully set forth, through provision of an auxiliary magazine for the fine yarn bobbins in addition to that for the coarser yarn bobbins, and automatic means by which filled bobbins are released individually from the respective magazines and substituted for the exhausted bobbins in the respective shuttles without interruption in the weaving.

Other objects and attendant advantages will appear from the following detailed description of the attached drawings, wherein:

FIG. 1 is fragmentary view in side elevation of a loom embodying the shuttle replenishment mechanism of our invention;

FIG. 2 is a fragmentary View showing the loom in front end elevation or as it is seen when looking in the direction of the angled arrows 11-11 in FIG. 1;

FIGS. 3 and 4 are fragmentary views in longitudinal section taken respectively as indicated by the angled arrows IIIIII and IVIV in FIG. 2;

FIG. 5 is a fragmentary detail view in perspective as seen when looking in the direction of the angled arrow V in FIGS. 1 and 4;

FIG. 6 is a fragmentary view showing the mechanism provided for releasing the bobbins from the respective magazines;

FIG. 7 is a view corresponding to FIG. 6 showing how bobbin release is elfected;

FIG. 8 is a view showing part of the mechanism of FIG. 6 in perspective;

FIG. 9 is a fragmentary detail view in section taken as indicated by angled arrows IX-IX in FIG. 6;

FIG. 10 is a fragmentary view in perspective of a por- Efiflgfifi Patented Jan. 22., 1953 tion of the mechanism by which bobbin replacements are effected.

FIG. 11 is a fragmentary view in horizontal section taken as indicated by the angled arrow XI-XI in FIG. 1 and drawn to a larger scale;

FIG. 12 is a fragmentary view in vertical section taken as indicated by the angled arrows XIIXII in FIG. 11, with portions broken out; and

FIG. 13 shows a wiring diagram of the electrical facilities provided for initiating bobbin replacements in the shuttles of the loom.

With more detailed reference, first more particularly to FIGS. 1-4 of these illustrations, the loom selected for convenience of exemplifying our invention has a framework 15 in the lower part of which is journaled a transversely extending shaft 16 adapted to be driven from a suitable source of power, not shown. Through intermeshing spur gears 17 and 18, respectively at opposite sides of the loom, rotary motion is communicated from the shaft 16 to a second transverse shaft 19 supported in bearings, such as the one indicated at 20, atop the framework 15. Afiixed to the shaft 19 at each side of the loom is an elliptical gear 22 provided with a crank pin 23 which is connected, through a link 25, to the corresponding supporting sword 26 for the lay 27. The two swords 26 are secured at their bottom ends to a transverse rock shaft 28 suitably supported in bearings 29 in the lower frontal part of the framework 15. Mounted on the lay 27 respectively at opposite ends are boxes 30 having vertically spaced compartments 31 and 32 for reception of upper and lower shuttles 33 and 34. During the weaving, the shuttles 33 and 3 4 are thrown crosswise of the lay 27 from opposite sides of the loom by picker sticks, whereof one is shown at 35, fulcrumed on studs 36 projecting laterally from upward arms 37 fast on the rock shaft 28. Each picker stick 35 is actuated, through a bell crank lever 39, from a horizontally arranged treadle arm 10 fulcrumed at 41 on the framework 15, each such treadle arm being iased upwardly by a spring 42 for maintenance of a shoe 43 thereon in operative relation to picker rollers 44 on a double-armed member 45 affixed to the main shaft 16. Stationarily supported upon a crosswise frame member on knife bar 49 at the replenishing side of the loom is a gravity feed magazine 50 which we utilize for filled bobbins B Wound with a heavy weft yarn, said magazine comprising two vertical channels 51 and 52 which serve as guides for the opposite ends of filled bobbins B, and of which the lower end or outlet portions 53, 54 are sloped downwardly and inwardly of the front of the loom. Disposed crosswise between the channels 51 and 52 adjacent the lower ends thereof is a cradle 55 by means of which the bobbins B are releasable, one at a time, from the magazine. As best shown in FIG. 5, the cradle 55 comprises a horizontal shaft 56 whereof the opposite ends are rotatively supported in bearings 57 and 58 respectively bolted to the channels 51 and 52 and a pair of discs 59 and 60 which are afiixed to said shaft within cut- outs 61 and 62 in the lower flanges of the sloped bottom portions of said channels, said discs having rounded notches of radii corresponding respectively to those of the opposite end portions of the bobbins. Cradle 55 is normally restrained in the position in which it is shown in FIG. 3 by a finger 63 at one end of the shaft 56 maintained in engagement with a fixed stop 65 on the channel by the pull of a spring 66 upon an armed projection 67 at the correspond ing end of said shaft. Insofar as described up to this point, the loom is substantially identical with that disclosed in US. Patent 2,111,526 granted to W. F. Bird et al. on March 15, 1938. Fixedly sustained in spaced relation from the magazine 56 by a cross bar 68 is a second gravity feed magazine 70 which is similarly composed of two vertically arranged channels 71 and 72 for guidance of bobbins B wound with a pile loop-supporting yarn thinner or different from that on the bobbins B in the first described magazine. As shown, the buttom end portions 73 and 74 of the channels 71 and 72 of the second magazine 70 slope downwardly and toward the declining bottom end portions 53 and 54 of the magazine 50 and terminate short of the latter. Like the first magazine 50, the second magazine 70 is provided adjacent its outlet end with a similar cradle 75 by which the bobbins B are releaseable one at a time, said cradle comprising a cross shaft 76 rotatively supported in bearings on the channels, and notched discs 77 and 78 on said shaft respectively occupying cut-outs in the bottom flanges of the lower sloped portions of said channels. Upon release of a bobbin from the supply in either of the magazines as later explained, it comes to rest in the lower ,end of the magazine 54} where it is temporarily arrested by stop fingers 83 and 89, see FIGS. 1 and 4. The finger S3 is pendent from a shaft 85 rotatively supported in a bracket 86 on the cross bar 68. By means of a torsion spring 87 influential upon the shaft 85, the finger 83 is yieldingly urged toward the bottom discharge end of the magazine 50, and is restrained normally in the position in which it is shown in FIG. 4 by a stop 88 on said shaft. The stop finger 89, on the other hand, is secured to a shaft 90 rotatable in the bottom end of the channel 72 of the magazine 7 and is urged toward the bottom end of the magazine 50 by a tension spring 91 acting upon a second finger 92 upon said shaft. Normally, the stop finger, 89 is restrained in the illustrated position of FIG.

- 3 through engagement with a stud 93 on the channel 72 of the magazine 70.

For transferring the released bobbin from the bottom of the magazine 50 to one or the other of the shuttles there is shown a means generally similar to that disclosed in the Bird et al. patent hereinbefore referred to and includes a lever 95, said lever being free on and reaching upwardly from a shaft 96 journaled in fixed bearings 97 on the rail 49, and to which, at the distal end, is yieldingly pivoted a grooved hammer projection 98. Fast on the shaft 96 is a tri-arm 99 whereof the two extremities 99a and 99b extend above the shaft. A compression spring whereof one end is buttressed against the extremity 99a, is disposed to cooperate With the lug 1% on the lever 95 to provide a yielding connection between said lever and said tri-arm. Pivoted medially to the pendent extremity of the tri-arm 95 is a counterweighted dagger 191 which is subject to a finger spring S so as to be normally maintained in the position in,which it is shown in FIG. 3. Depending upon which of the two shuttles is to be replenished, the dagger 101 is adapted to be engaged by one or the other of the two hunters 102 and 103 adjustably fixed in the front end of a slide bar 104, constrained to reciprocation horizontally at one side of the loom, said bar being connected by a link 1615 to a crank stud 166 on an elliptical gear 107, in mesh with the elliptical gear 22 hereinbefore referred to. Supported at one end in the framework 15 at one side of the loom and at the other end in a fixed bearing 110 pendent from the knife rail 49, is a tranverse rock shaft 111, see FIGS. 2, 3, and 10. Afiixed to one end of a sleeve 112 free on the shaft 111 is an arm 113 which carries a roller 113b adapted to cooperate with a pendent cam projection 161a on the dagger 101, the hub of said arm having a lateral projection 113a in engagement with a similar projection 114a of a collar 114 fast on said shaft. To the opposite end of the sleeve 112 is secured an upstanding finger 115 whereof the end is notched as at 115a so as to be engageable by a counterweighted latch 116 fulcrumed at 117 upon a small bracket 118 secured to the bottom of the knife rail 49. The roller 113 at the bottom end of a pendent projection 116a of the latch 116 is arranged to the actuated, as later explained, by a bunterstud 120 on the lay 27. Normally, the latch 116 is maintained in the position in which it is shown in FIG. 3 by engagement of a lug 116b thereon with the bracket 118. Free on the sleeve 112 adjacent the finger is a collar 121 which is rotatably urged in clockwise direction by a torsion spring 122 for maintenance of a tongue 121a thereon in engagement with a tongue 115i; on finger 115.

The mechanism which we have devised for actuating the cradles of the two magazines 5t and 70 derives its motion from the lay sword shaft 28 and includes an upright arm 125 (FIGS. 1, 6, 7 and 8) alfixed to said shaft. Pivoted intermediate its ends to the-top end of the arm 125 is a lever 126. By means of a horizontal link 127 the lower extremity of the lever 126 is connected to the pendent arm of a bell crank 128 fulcrumed on a stud projection 129 of a bracket 130 suitably affixed to the framework 15. The bell crank 128 is subject to the pull of the spring 131 and its horizontal arm is connected by an upwardly extending link rod 132 to an arm 133 (FIG. 10) fast upon the shaft 111. The cradle actuating mechanism further includes a lever 135 which is clamped to the sleeve 112 adjacent the finger 115. As shown, the lever 135 carries a pin 136 which is engaged in the slot 137a of a link 137 pivotally suspended from the end of a short arm 138 aflixed to one end of a rock shaft 1411 supported in spaced bearings 141 and 142 (FIGS. 3, 5, and 10) on the knife rail 49. Fast on the shaft 149 between the bearings 141 and 142 is a notched arm 145 whereto is connected one end of a cord or cable 146 which is retroverted about an idle roller 147 and whereof the opposite end is connected to a hook arm 148 on the shaft 56 of the cradle 55. Theshaft 140 is normally held in position rotatively as in FIG. 5 by a stop arm 149 thereon subject to a toggle spring 150. A finger 151 (FIGS. 6, 7 and 8) clamped tothe link rod 132 overreaches the lateral lug projection 152a of the collar 152 at the lower end of a rod 153 which is suspended from the horizontal arm of the small bell crank 155 fulcrumed on a small bracket 156 (FIG. 4) atop the knife rail 49 and subject to the pull of a tension spring 157. The vertical arm of the small bell crank 155 is connected, in turn, by a link rod 158 to a small arm 159 at one end of the shaft 76 of the cradle 75. It is to be noted from FIG. 8 that the rod 153 is constrained to lateral swinging movement in a forked guide 160 suitably aflixed tothe framework 15. Journaled in spaced bearings 161, 162 also afiixed to the framework 15, is a horizontal shaft 163 having adjacent one end thereof an upstanding finger 165 which is adapted to engage the rod 153 from behind and thereby bring the lug 152a of the collar 152 beneath the finger 151 on the link rod 132, as later on explained.

By means which we have provided to select filled bobbins from one of the other magazines 5%, 79 for transfer of the selected bobbins to the proper shuttles 33, 34 is as follows: Mounted at different elevations on the bracket 130 are solenoids and 171, see FIGS. 1, 6, 7, 8, 9 and 13. The armature of the solenoid 170 is connected to one extremity of a tri-arm 172, the extremity 172a of which is connected to a normally retracted bolt 173 guided for endwise sliding movement in bracket 13%} into the path of the lever 126. The extremity 17% of the tri-arm 172 is weighted and connected by a link 174 to an arm 175 on the shaft 163'. The armature of the solenoid 171 is similarly connected to a counterweighed tri-arm 176 whereof the extremity 176a is connected to another normally retracted bolt 177 likewise guided for endwise sliding movement in the bracket 139, at a level below the bolt 173 and likewise adapted to be thrust into the path of the 'lever126. As shown in FIG. 13, the coils of the armatures of the solenoids 170, 171 are in circuit respectively with spring biased electrodes 1%, 181 and 182, 133 slidable in guides 184, 185 and 186, 137 in a bracket 188 (FIGS. 11 and 12) on the knife rail 49 respectively at the levels of the upper and lower shuttle compartments 31, 32 of one of the shuttle boxes 30, and adapted to make contact with metallic ferrules 189 and 1% on the bobbins B and B in the shuttles 33, 34 when the weft supply on said bobbins runs out. The electric current used to energize the solenoids 170 and 171 may be supplied from any suitable source such as a battery indicated at 191 in FIG. 13.

Operation Normally, the lever 126 is swung bodily back and forth with the lay 27 without affecting the instrumentalities interposed between it and the cradles 55 and 75 of the magazines 5% and 7G. Assume that the weft supply in the upper shuttle 33 has become substantially exhausted and that, upon the next beat of the lay 27, the electrodes 18% and 131 contact the metallic ferrule 189 on said bobbin, as a result, the solenoid 170 is energized and the bolt 173 thrust forward to intercept the arm 126 as in PEG. 6, the bell crank 128 being thereby moved counter-clockwise about its fulcrum 129. At the same time, by energization of the solenoid 179, the tri-arm 172 is moved clockwise as in FIG. 9 and a similar movement is imparted, through the links 174 and 175, to the shaft 163, the finger 1fi5 thereon thus urging the rod 153 sidewise so that the lug 152a of the collar 152 thereon is brought beneath the finger 151 on the link rod 132. By arrest of the lever 126, as just explained, and the movement of the arm 125, the link rod 132 is pulled downward due to its connection to the bell crank 128, with the result that the rod 153 is depressed as in FIG. 6 upon engagement of the finger 151 with the lug 152a of the collar 152. Due to the slot in the link 137, the arm 138 on shaft 146 is not affected at this time. As the rod 153 is depressed, the bell crank 155 is moved clockwise to the position in FIG. 6 and, through the horizontal link and arm 159, the cradle 75 is turned through a partial rotation to release the bobbin B from the magazine 70. The bobbin B so released rolls down the inclined lower portions of the magazine 70 and onto the bottom inclines of the magazine 50 where it is arrested by the stop fingers 83 and 89 as in FIG. 3. During the downward movement of the link rod 132, the arm 133 is moved counterclockwise as viewed in FIGS. 1 and 1t) and the pin 136 at the end of the arm is moved down in the slot of the link 137 without, however, affecting the shaft 149 at this time. By actuation of the arm 133 however, the shaft 111 is turned through a partial rotation counterclockwise in H63. 1 and 10 incident to which, through the collar 114-, the arm 113 and the sleeve 112 are correspondingly moved. By attendant cooperation of the roller 11% of the arm 113 with the cam 191a of the dagger 1%1, said dagger is moved about its fulcrum and the end thereof brought to the level of the bunter 192 on the slide bar 104. By the same rotary shift of sleeve 112 the finger 115 is turned and the notch 115a in the end thereof is caught by the hook of the latch 116 to temporarily hold the shaft so turned against the torsional effect of the spring 122. Accordingly, during the next beat stroke of the lay 27, the dagger 101 is engaged by the hunter 162 on the slide bar 164 with the result that, through the arm 99, the shaft 6 is turned clockwise in FIG. 3, and the arm 95 is actuated so that, through the hammer 98, the bobbin B released as above explained, is transferred from the magazine 5% into the upper shuttle 51, the exhausted bobbin being, at the same time, displaced from said shuttle and discharged down through an opening 27a (FIGS. 3 and 4) in the lay 27.

Upon exhaustion of the yarn supply on the bobbin in the lower shuttle 32 and attendant contact of the electrodes 182 and 183 with the metallic ferrule 19! on said bobbin when in the shuttle box, the circuit through the coil of the solenoid 171 is established, causing the lower slide bolt 177 to be thrust forward to the broken line position of FIG. 9 into the path of the lever 126. The lever 126 is thereby intercepted as in FIG. 7 with impartation this time, through the parts 127 and 128, of a greater downward movement to the link 132 and impartation, in turn, of a greater rotative shift to the shaft 111 and the arm 133. A definite partial clockwise turn is thus communicated, through the slotted link 137 and arm 138, to the shaft 140 so that the notched arm exerts a pull on the cord or cable 146 (FIGS. 4 and 5) to actuate the cradle 55 for release of a bobbin B from the magazine 5% said bobbin rolling down the inclines at the bottom of said magazine until arrested by the fingers 83 and 89. Transfer of the released bobbin to the lower shuttle 32 is effected in the same way as hereinbefore described in connection with the transfer of a fresh bobbin into the upper shuttle, except that in this instance, a greater rotative shift is imparted to the shaft 111 and hence to the arm 113 whereby the dagger 101 is positioned so that the end thereof is brought to the level of the lower hunter 1% on the slide bar 104, which bunter extends to a greater distance forwardly of said bar than the hunter 102. Accordingly, a greater swing is imparted to the transfer arm 95 as necessary, for transfer of the bobbin released from the magazine 5% as above into the lower shuttle 32.

While the preferred embodiment of this invention has been described in some detail, it will be obvious to one skilled in the art that various modifications may be made without departing from the invention as hereinafter claimed.

Having thus described our invention, we claim:

1. In a double shuttle loom operative on the crosspicking principle, first and second supply magazines for filled bobbins to be substituted individually in the lower and upper shuttles upon depletion of the individual bobbins in said shuttles, automatic release mechanism for releasing the bobbins one at a time from the respec tive magazines including individually associated rockable cradles; an upright oscillating arm fast on the shaft to which the swords of the lay are afiixed; an upstanding lever intermediately pivoted to the end of the oscillating arm; an arm connected to the cradle of the first magazine; a link pendent from the arm on the cradle of the first magazine and having a finger thereon intermediate its ends; an arm connected to the cradle of the second magazine; a rod pendent from the arm on the cradle of the second magazine and having a collar at the bottom end thereof normally displaced laterally from beneath the finger on the first mentioned link; a bell crank fulcrumed on a fixed bracket with its horizontal extremity connected to the bottom end of the link rod and with its pendent extremity connected to the bottom end of the arm on the cradle of the first magazine; a transverse shaft with a finger thereon engageable with the said rod; normally retracted slide bolts respectively at different levels in the bracket; spring urged contacts for engaging a ferrule on the lower shuttle upon depletion of the weft thereon; a solenoid in circuit with said contacts and operative upon closing said circuit to project the lower slide bolt into the path of the lever and thereby intercept said lever to effect operation of the main magazine cradle for release of a bobbin therefrom in readiness for transfer to the lower shuttle; spring urged contacts for engaging the ferrule on the bobbin in the upper shuttle upon depletion of the weft thereon, a second solenoid in circuit with the last mentioned contacts and operative upon closing the circuit to project the upper slide bolt into the path of the lever to intercept said lever and for actuating the cross shaft so that, by the finger thereon, the rod is moved laterally to bring the collar on the rod beneath the finger on the link for actuation of the cradle of the second magazine and release of a fresh bobbin therefrom in readiness for transfer to the upper shuttle; and transfer means automatically operable to transfer the bobbins so individually released into the respective shuttles.

2. A double shuttle loom according to claim 1, further including ieldable means common to the two magazines for temporarily arresting the individually released shuttles, wherein the transfer mechanism includes a transferer, and automatic means for imparting movements of different extents to the transfer to dislodge the individually released bobbins from the temporary arresting means and deposit them into the corresponding shuttles with incidental displacement of the depleted bobbins from said shuttles.

3. In a double shuttle loom operative on the cross picking principle having a lay with its swords affixed to a rock shaft, first and second supply magazines respectively for filled bobbins to be substituted individually for the individual bobbins in the respective shuttles upon depletion of the bobbins in said shuttles; separate detectors for detecting depletion of the bobbins in the respective shuttles; separate means for releasing individual bobbins at different times from the respective magazines includin an oscillating arm on the rock shaft; separate detectors for detecting exhaust of the weft on the bobbins in the respective shuttles; normally idle linkages adapted to be set by means controlled by the respective detectors for motivation by the arm aforesaid to actuate the separate release means at different times; and transfer means for transferring the bobbins individually released as aforesaid into the respective shuttles at different times with attendant displacement of the individually depleted bobbins from the respective shuttles.

4. In a double shuttle loom operative on the cross picking principle, having a lay with its swords aifixed to a rock shaft, and a pair of shuttle boxes in superimposition respectively at each side of the loom: weft exhaust detectors, one associated With each shuttle box at one side of the loom; a first supply magazine and a second supply magazine, respectively for bobbins wound with different kinds of yarn, supported above the shuttle boxes at the replenishing side of the loom, said magazines having a common outlet; an oscillating arm on the aforesaid rock shaft; bobbin release means individually associated with the respective magazines; means at the common outlet of the two magazines for temporarily restraining bobbins released individually from the respective magazines at different times; normally idle linkages for actuating the respective release means; means controlled by the respective detectors upon depletion of the weft in the respective shuttles for setting the linkages aforesaid for actuation from the oscillating arm to actuate the respective release means at different times; and transfer means for transferring the bobbins individually released from the magazine as aforesaid into the respective shuttles with attendant displacement of the depleted individual bobbins from the shuttles.

References fiiteti in the fiie of this patent UNITED STATES PATENTS Belgium Feb. 14,

U ITED STATES PATENT OFFICE CERTIFICATE, OF CORRECTION Patent No, 3 O74A39 January 22, 1963 Charles De Parham et a1.

It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

Column 3, lin"e""."3 for "bu'tto'm"" re'a'd""-- bottom line 6, after"downwardly insert; above" ==g column: '7', line 8, for transferread 'trans'fer'er"",

Signed an'd"""s'eal'e'd"'this 16th"day-0f July 1963,

SEAL) Lttest:

ERNEST W. SWIDER DAVID L- LADD Xttesting Officer Commissioner of Patents

Claims (1)

1. 3. IN A DOUBLE SHUTTLE LOOM OPERATIVE ON THE CROSS PICKING PRINCIPLE HAVING A LAY WITH ITS SWORDS AFFIXED TO A ROCK SHAFT, FIRST AND SECOND SUPPLY MAGAZINES RESPECTIVELY FOR FILLED BOBBINS TO BE SUBSTITUTED INDIVIDUALLY FOR THE INDIVIDUAL BOBBINS IN THE RESPECTIVE SHUTTLES UPON DEPLETION OF THE BOBBINS IN SAID SHUTTLES; SEPARATE DETECTORS FOR DETECTING DEPLETION OF THE BOBBINS IN THE RESPECTIVE SHUTTLES; SEPARATE MEANS FOR RELEASING INDIVIDUAL BOBBINS AT DIFFERENT TIMES FROM THE RESPECTIVE MAGAZINES INCLUDING AN OSCILLATING ARM ON THE ROCK SHAFT; SEPARATE DETECTORS FOR DETECTING EXHAUST OF THE WEFT ON THE BOBBINS IN THE RESPECTIVE SHUTTLES; NORMALLY IDLE LINKAGES ADAPTED TO BE SET BY MEANS CONTROLLED BY THE RESPECTIVE DETECTORS FOR MOTIVATION BY THE ARM AFORESAID TO ACTUATE THE SEPARATE RELEASE MEANS AT DIFFERENT TIMES; AND TRANSFER MEANS FOR TRANSFERRING THE BOBBINS INDIVIDUALLY RELEASED AS AFORESAID INTO THE RESPECTIVE SHUTTLES AT DIFFERENT TIMES WITH ATTENDANT DISPLACEMENT OF THE INDIVIDUALLY DEPLETED BOBBINS FROM THE RESPECTIVE SHUTTLES.

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