US2333904A

US2333904A - Pick and pick loom

Info

Publication number: US2333904A
Application number: US422020A
Authority: US
Inventors: Richard G Turner
Original assignee: Crompton and Knowles Corp
Current assignee: Crompton and Knowles Corp
Priority date: 1941-12-08
Filing date: 1941-12-08
Publication date: 1943-11-09
Anticipated expiration: 1960-11-09

Description

Nov. 9, 1943. R a TURNER 2,333,904

PICK AND PICK LOOM Filed Dec. 8, 1941 6 sheetzs she et l INVENTOR RICHARD G. TURNER ATTORNEY Nov. 9, 1943. TURNER 2,333,904

PICK AND PICK LOOM Filed Dec. 8, 1941 6 Sheets-Sheet 2 AQ F15.

I INVENTOR 17 Run-mat: (Tn FUR NER ATTORNEY Nov. 9, 1943. R. G. TURNER PICK AND PICK LOOM Filed Dec. 8. 1941 6 Sheets-Sheet 3 FIE: E

luvcu-ron Run-man GzTumun A-r-ronmv Nov. 9, 1943. R. a. TURN ER PICK AND PICK LOOM Filed Dec. 8, 1941 6 Sheets-Sheet 4 INVINTOR RIGHARD G. TunNzn TORNIY Nov. 9, 1943.

R. e. TURNER 2,333,904

PICK AND PICK LOOM Filed Dc. s, 1941 s Sheets-Sheet 5 Fzttfl 2o,

|NVENTOR RICHARD GrTURNER NOV. 9, 1943. R, G TURNER 2,333,904

PICK AND PICK LOOM Filed Dec. 8, 1941 6 Sheets-Sheet 6 6L L GR 20 no gzl FIB; 1;;

lwvENToR filer-mm: G. TURNER Patented Nov. 9, 1943 UNITED STATES PATENT OFFICE 13 Claims.

This invention relates to improvements in automatic pick and pick filling mixing looms and it is the general object of the invention to provide such a loom in which an occasional decorative stripe can be introduced into the fabric being woven.

It has been proposed heretofore to use a multicolor weft replenishing loom for mixing Weft in a single color pick and pick fabric by the use of several shuttles which follow each other in rotation. Fabrics woven on this type of loom are of a uniform plain color in which variations in color and size are intermixed by several shuttles. It is desirable that a loom of this type be provided with mechanism to permit the occasional introduction of a pick of weft distinctive from that carried by the other shuttles.

Weft mixing pick and pick looms ordinarily operate with two shifting shuttle boxes at each end thereof and it has been customary to operate the boxes at the replenishing end in a four-pick sequence in which they are up for two picks and then down for the next two picks. The plain weft shuttles which weave the body or the greater part of the fabric are so controlled as to enter the upper of the two cells at the replenishing end at regularly recurring intervals, such for instance as every twelfth pick when three shuttles are used in rotation. Each shuttle is thus given an opportunity to be replenished without requiring an excessive reserve bunch of weft. The present invention aims to preserve this operation but control the decorative weft so that its shuttle will also have an opportunity to be replenished. It is accordingly a further object of my present invention to regulate the picking of the shuttles and the shifting of the boxes at the non-replenishing end so that the decorative weft will be picked into that cell of the boxes at the replenishing end positioned for replenishment. As set forth hereinafter I provide for moving the decorative shuttle to replenishing position whenever it is active but I do not wish necessarily to be limited to this method of procedure, inasmuch as it will be sufficient if the decorative shuttle arrives in replenishing position often enough in the course of its activity to be replenished without requiring too large a bunch of reserve weft,

The usual pick and pick weft replenishing loom operating with three shuttles also employs drop boxes having two cells at that end of the loom opposite the magazine, these boxes also shifting in the four-pick sequence but being out of step with the boxes at the magazine end by one pick. It is a further object of my present invention to add an "extra cell to the two boxes at the non-replenishing end which shall be a home box for the decorative weft and control the 'shi'ftiiigs of the three cells so that the decorative-shuttle will become "active at a time determined 'by the position of the boxes at the magazine end and when the upper box at the latter end of the loom is in active position. In order to accol'nplish this result I provide a pattern mechanism so built as to interrupt "the normal two up and two dew-n sequence the boxes at the nonrep-leni-shing end whenever the decorative shuttle is to be active for the purpose of moving the third cell into picking position.

:It is a further object of my invention to cause the aforesaid interruption to last four apicks so that normal operation of the boxes at the nonreplenishing end can be resumed in proper phase with the boxes at the magazine *end of the 106m.

The pattern may demand either a single piok'or a pair of closely adjacent decorative picks. In the first instance I allow the shuttle when first active to pass through the shed and lower all the warp when the decorative shuttle returns to its home box, later trimming the floating pick laid by the decorative shuttle on its return flight.

It is a further object of :my present invention to manipulate the shuttle boxes at the magazine end according to a definite sequence of picks, such as two up and two down, and maintain this sequence Ian-interrupted while the decorative shuttle is active. In this way I am able to use a loom either for the weaving of plain pick and pick without decorative stripes or with the shuttle having the fancy weft, being able to pass from one type of fabric to the other without disturbing the control of the shuttle boxes at the magazine end of the loom.

It is a further object of my invention to pro-- vide a m adapted for the weaving of a pick and pick fabric wherein more than one distinctive weft stripe can be introduced. In order to enable the loom to weave a fabric having one or more distinctive stripes I provide a magazine repeater and a repeater-controlling m'echanism'with mter changeable cams, and also employ a form of shuttle box construction at the non-replenishing end of the loorn and o erating mechanism therefore which will permit the use-of three plain weft shuttles which can follow each other in rotation together with a plurality of distinctive weft shuttles.

It is a further object of my present invention to provide mechanism which prevents operation of the repeater cam at the magazine when dispart of the train.

It is another object of my present invention to provide selector mechanism for the reserve bobbins in the magazine controlled by some part moving in timed relation with the shifting boxes at the end of the loom opposite the magazine for the purpose of causing the selector to register with the stack of distinctive wefts when the shuttle carrying that kind of weft is called into action. In this connection it is a more particular object of my present invention to provide a cam to be operated by the shuttle box operating chain employed in the usual Knowles loom.

With these and other objects in viewwhich will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth.

In the accompanying drawings, wherein a convenient embodiment of my invention is set forth, Fig. 1 is a front elevation of a loom having the preferred form ofmy invention applied thereto,

Fig. 2 is an enlarged side elevation of the weft replenishing mechanism and associated parts looking in the direction of arrow 2, Fig. 1,

Fig. 3 is an enlarged vertical section on line 33 01' Fig. 2, showing the repeater mechanism,

Fig. 4 is a detailed vertical section on line 4-4 of Fig. 3, i

Fig. 5 is a detailed plan view looking in the direction of arrow 5, Fig. 2,

Fig. 6 is an enlarged front elevation of the weft replenishing mechanism looking in the direction of arrow 3, Fig. 2, I

Fig. '7 is a side elevation of the lower part of the inner end of the magazine, parts being in section, looking in the direction of arrow 1, Fig. 6,

Fig. 8 is a horizontal section on an enlarged scale on line 8-8 of Fig. 6, showing the weft detector,

Fig. 9 is a detailed side elevation of the weft detector controlling cam looking in the direction of arrow 9, Fig. 8.

Fig. 10 is a detailed side elevation of the magazine controlling cam and connections looking in the direction of arrow l0, Fig. 1,

Fig. 11 is an enlarged rear elevation of certain parts shown in the upper left hand corner of Fig. 1, t

Fig. 12 is a plan view of the shuttle box operating levers and mechanism taken in the direction of arrow I2, Fig.11, I

Fig. 13 is an elevation of the selector operating cam for the preferred form of my invention looking in the direction of arrow l3, Fig. 11, Fig. 14 is a diagrammatic view showing the connections between the cam shown in Fig. 1'3 and the magazine selector,

Fig. 15 is a diagrammatic view. showing the relative positions of the shuttle boxes for twentyeight consecutive picks when a single distinctive weft shuttle is used,

Fig. 16 is a. draft of the box controlling chain as seen, fro the left of Fig. 1 toproduce the movements suggested ,in Fig. 15 and assumed to move i are used,

' upwardly in the direction of the arrow toward controlling position,

Fig. 17 is a view similar to a portion of Fig. 15 but showing a shuttle sequence for the modified form of my invention when two distinctive weft shuttles are used,

Fig. 18 is a view similar to the lower part of Fig. 16. showing that part of the box chain draft controlling the second distinctive weft shuttle,

Fig. 19 is a view similar to Fig, 13 but showing a modified form of cam for controlling the magazine selector,

Fig. 20 is a modified form of cam for the magazine repeater when two distinctive weft shuttles 1 Fig. 21 is an enlarged view similar to a portion of Fig. 3 showing the shield which disables the repeater actuating pawl when distinctive Weft is being replenished.

Referring particularly to Fig. l, the loom frame F supports a lay L having a shuttle box gang GL .at the left end thereof having in the present instance four cells III, II, l2 and I3 shiftable with respect to the lay in guides l4 and mountedon a box rod l5. The latter is connected to a box lifting chain 16 guided as indicated in Fig. land extending upwardly toward a head mechanism K. The right end of the lay is provided with a shuttle box gang GR containing in the present instance top and

bottom cells

20 and 2|, respectively, guided in a manner similar to gang GL. The right hand set of shuttle boxes is mounted on a box lifter rod 22 controlled by box lifter chain 23 which extends to the left hand end of the loom and then upwardly toward the head mechanism K.

The mechanism K which controls the positions of the gangs GL and GR, and also the warp harnesses H, comprises upper and

lower cylinders

25 and 26, respectively, part of the peripheries of which are provided with gear teeth as shown in Fig. 11. Vibrator gears 21 are located between the

cylinders

25 and 26 and each gear 21 is mounted on vibrator levers to be described hereinafter. It is customary to divide the vibrator levers and their gears into two groups one of which controls the harnesses and the other of which controls the boxes. In the present instance I provide a pattern chain 28 to control the harnesses and a box chain 29 to control the box gangs GL and GR.

The

cylinders

25 and 23 complete a' rotation each pick of the loom and. the pattern chains are advanced to present a new bar under the vibrator levers each pick of the loom. When the vibrator levers are raised the vibrator gears are caused to turn in one direction by the top cylinder 25 and when lowered the vibrator gears are turned in the opposite direction by the bottom cylinder 26. As shown in Fig. 1 the harness frames are controlled by harness jacks 30 attached by connectors 3| to harness controlling vibrator gears mounted on vibrator levers 32.

Each end of the loom is provided with a picker stick 33 operated by mechanism not shown to pick the shuttles in the actively placed shuttle boxes across the lay. In the present instance the picker sticls operate alternately, one of them having a picking stroke on even numbered picks of the loom while the other operates on odd numbered picks. Well understood mechanism may be employed to operate the picker sticks and will be actuated by the bottom shaft 34 which in the present instance completes a rotation every other pick of the loom. Shaft 34 is provided with a large gear35 meshing with a gear 36 of half size for turning the crank shaft 31, Fig. 10. The crank shaft rotates every pick of the loom and by means of connectors 38 causes the lay to reciprocate backwardly and forwardly. The picker sticks ordinarily operate when the lay is moving rearwardly and has reached approximately its mid position and the shuttle boxes of both the gangs GL and GR shift vertically with respect to the lay during a shifting interval which starts when the lay is approximately at the mid point of its forward motion and continues until the time of picking.

The right hand end of the loom is provided with a magazine M shown in Figs. 2 and 6 and having in the present instance four reserve bobbin stacks designated respectively at 40, ll, 42 and 43. Each stack is associated with a vertical slide 45 which controls the associated bobbin releasing cradle 48. There will be a cradle for each stack of bobbins and each cradle will normally be empty and in the position shown in Fig. 7 due to the fact that its associated slide is nor mally down.

Each vertical slide 45 has a pair of vertically spaced lugs 44 and a selector slide 4! mounted for horizontal movement on the magazine has a pair of spaced actuator fingers 48 for cooperation with the lugs 44 of slide 45 registering with the selector first to raise and then lower the slides '45 for the release of a reserve bobbin from the corresponding stack.

When a bobbin has been released from any one of the stacks it rests on the supports 50 shown in Fig. 7 to be inserted into a shuttle in the upper box 20 by a transferrer arm pivoted on a stud 52 carried b the magazine frame and having a latch 53 to be raised by rod 54 into the path of a hunter 55 on gang GR.

The weft detector D comprise a side slipping finger 51, see Fig. 8, pivoted on a slide 53 mounted on the upper part of a rising and falling support 59. The latter is guided for vertical reciprocation in a block 6!] bolted to a stand 6| depending from and fixed with respect to the transfer stud 52. A rod 63 is connected to the carrier 58 and extends downwardly to be connected as at 64 to the box rod 22. As the latter rises and falls the detector moves up and down and is kept in register with the top cell 20 of the gang GR.

The block 60 carries a small shaft 55 fastened to an arm 66 which extends upwardly for engagement with a bar 07 on the slide 58. A second arm 68 fast on shaft 85 is pivoted to a rearwardly extending controller pin 69 which extends under a floating control lever I0. The latter is pivoted at the upper end of a block II from which depends a rod I2 connected to an actuator lever I3. This lever is controlled by a cam 74 fast on shaft 34 and having a dwell f 5 corresponding to one pick of the loom and having a lobe I8. During one pick the dwell I5 holds the lever '13 stationary, but during the next pick when gang GR is rising the block H descends because of a decline H in the cam. This decline causes down motion of block 'II when the lay i on substantially front center as the gang GR rises. If at this time the finger 51 engages a sufficient supply of weft in the top shuttle box 20 the slide 58 is moved forwardly to move the pin 69 from under the lever I0 and the latter can descend with the block (I without movement of the left hand end of said lever as viewed in Fig. 8. If, on the other hand, the detector has engaged a depleted supply of weft the finger 51 will slide laterally and the carrier 58 will be held in rear position by spring I8 .and pin 69 remains under lever 10. Under these conditions down motion of the block II will cause descentof rod connected to lever I0 and rock the selector 4! in a counterclockwise direction as viewed in Fig. 6, thereby lifting the vertical slide 45 which happens to be in register with the selector.

As the loom continues to operate the high part of lobe I5 causes rising of block ll to cause the right end of lever 10 to engage a fixed pin '81 on the block 60 the result of which is to lift rod 80 and thereby cause the selector to depress the previously raised slide 45 and release a bobbin from the corresponding stack. The selector has a right hand movement as viewed in Fig. 6 every other pick of the loom immediately after the time for detecting of exhaustion in the. rising ,box 20..

Downward motion of the slide 45 is utilized to set the transferrer arm for operation bythe mechanism shown in Figs. 2 and 6. A top shaft of the magazine has secured thereto a shelf 86 for cooperation withdogs 8i. There is a dog for each of the slides 45,. and when any of the latter rise its corresponding dog is moved by a spring 88 to a position over the shelf 85. :Subsequent descent of the elevated slide 45. rocks shaft 85 in a clockwise direction as viewed in Fig. 6, whereupon an arm 80 secured to shaft 85 and connected to previously described rod 254 depresses the latter to raise latch 53 to transfer position. At the same time a second arm 9I secured to shaft 85 acts through rod 92 to move the cutter C from normal forward to operating rearward position. On the forward stroke of the lay subsequent to transfer the cutter mechanism C will be moved forwardly and will act through rod 92 to reset the top shaft 85 to normal position, thereby permitting the latch 53 to fall below bunter 55 and raising shelf 85 so that it can again be depressed on the next replenishing operation of the loom.

The actuator for the rep-eater mechanism of the selector includes an arm 95 secured to shaft 85 and a descending rod 95 connected thereto and pivoted to a lever 91 moving about a fixed center 98 and carrying a pawl 09 which operates a ratchet wheel I00. For each operation of the magazine the ratchet wheel is advanced /6th of a rotation. A lever IOI on a fixed pivot I02 extends upwardly to cooperate with a collar I03 secured to the selector 41.

In order that the weft detector may be prevented from operating when the gang GR, is in low position there is provided a lock I05, see 8, for engagement with the side of the slide 58. This lock includes a spring I06 connected to an arm I01 which cooperates with a fixed cam I 08 mounted on the stand'BI. The cam N38 is so shaped that when the boxes GR are up spring I06 holds the lock against slide 58, and if the detector moves forwardly without turning due to engagement of a suflicient supply of weft lock I05 will operate to prevent return motion of the slide and detector and rod 00 will therefore be temporarily rocked forwardly outof the path of lever I0. If the detector has indicated exhaustion, the following transfer results in forward motion of a roll H0 on the transferrer arm against a lug I II on the slide 58 to move the detector out of the path of the incoming'bobbin, where it will be held by the lock. In either instance lock I05 will serve to prevent rearward motion of the detector while the gang GR is raised. TAs said gang descends cam I08 willrock the lock in a counter-clockwise direction as viewed in Fig. 8 to permit spring 18 to return the detector to normal rear position.

The matter thus far described of itself may be constructed and operated as heretofore proposed. The gang GR operates in a four-pick cycle and will rise after receiving a shuttle from the gang GL, will remain up to permit picking of a shuttle from box 2| on the next pick, and will remain up to permit box 2| to receive another shuttle from the left hand side of the loom, whereupon gang GR descends to permit picking of the shuttle in box 20 to the left end; The gang GR is therefore up for two successive picks and then down two successive picks, and during its rising motion is accompanied by the detector which is kept in register with the top box 20. If exhaustion of weft exists in rising box 20 the detector will indicate a change when the boxes GR are abouthalf shifted in their upward motion. The operations of the magazine already described then ensue and transfer occurs on the following forward beat of the lay, when boxes GR are still raised, the transferrer arm descending to insert the bobin released from the magazine into the shuttle in box 20. For a further understanding of the structure and operation of the matter thus far described reference may be had to Patent No. 1,030,748, and co-pending applications Serial Nos. 365,093, filed Nov. 9, 1940; 389,570, now Patent No. 2,291,997; and 403,326, filed July 21, 1941.

In carrying my invention into effect I utilize a set of shuttles carrying the same kind of weft and use an additional shuttle carrying distinctive weft. The set carrying the plain weft will weave the greater part of the fabric while the shuttle G will be used at occasional intervals to lay a decorative stripe. I have illustrated my invention in connection with three shuttles I, 2 and 3 all carrying the same general kind of plain weft, and a fourth shuttle G carrying weft distlnctive as to color, for instance, from the other shuttles. During the weaving of the plain part of the fabric the gangs GL and GR will operate in usual manner, that is, each will be on a fourpick cycle to be up for two picks and then down for two picks, but the shiftings of the two gangs will be out of step with each other by one pick. This procedure continues so long as plain weft is to be woven but when a decorative stripe is called for by the pattern, there will be an interruption in the movement of the gang GL and the latter will shift to place cell l2 holding shuttle G in active position. In order that the shiftings of the shuttle boxes may be understood reference may be had to Fig. 15 wherein 'a series of successive box positions are shown as they occur during the weaving of the fabric. In this figure the positions of the boxes correspond to the top center position of the lay, or that position at which the box shiftings have been completed and the loom is about to start a picking operation. Although four cells have been shown in gang GL, I use only three of them, the bottom cell being empty when only one distinctive weft is employed. The positions of the boxes at top center for successive picks of the loom are represented in Roman numerals.

Considering first the gang GR,

boxes

20 and 2|v start the sequence down in position I, are then up for positions II andIII, then down for positions IV and V, etc. This operatlonof the gang GR. continues without interruption for reception of any of the shuttles I, Zand 3, as we shuttles follow each other in rotation, each shuttle being active for but one pick at a time and being immediately succeeded by another shuttle which is also active for but one pick so that none of these shuttles is active for two successive picks It will be seen from Fig. 15 that twelve'picks are required for a complete rotation of the shut?- tles, and during this twelve pick sequence; each shuttle lays four picks of weft, and enters the top box 20 in gang GR once. Each shuttle therefore has an opportunity during the twelve pick sequence to be detected and replenished as it enters box 20 in its order.

Inasmuch as shuttle G will eventually become depleted of Weft it must also be given an opportunity to be detected and replenished and must be picked into cell 20. the gang GL operates will therefore be interrupted on a pick when a plain weft shuttle would be picked from gang GL into the box 20, and at the interruption the cells. In and II willboth be inactive and above the shuttle race and cell l2 containing shuttle G will be active. This interruption can occur at four-pick intervals, and shuttle G temporarily takes the placeof one of the shuttles which would have been picked from gang GL into box 20.

As shown in Fig. 15 an interruption has been indicated in position XIII. In this position shuttle I would have been picked to the right, but ang GL is manipulated so that shuttle G becomes active. When this last named shuttle reaches the right hand side of the loom it will be lifted to inactive position and be given an opportunity to be detected as indicated in position XIV. In position XV shuttle G is still in inactive position and canbe, replenished if it has given indication of exhaustion on th previous pick. In position XVIshuttle G returns to the left end of the loom and enters its home box I 2, after which gang GL drops to low position as shown in position XVII and the weaving of plain pick and pick fabric isresumed by restoration of the normal shiftings of gang GL. A second interruption is indicated in position XXV eight picks after the end of the first interruption and is completed at pick XXVIII, whereupon normal weaving is resumed on pick XXIX.

The period of interruption involves four picks during all of which the gang GL is held temporarily in highest position but the gang GR continues its normal shiftings, and gang GL is restored to its normal sequence on a pick which-is in step with its last pick before the interruption, and on a pick which i out of step by one pick with the shiftings of gang GR.

The box chain 29 is built as shown'inFig. 16 to effect the previously described shlftings of gangs GL and GR through vibrator gears and their connections and now to be described.

As shown more particularly in Figs. 11 and12 I control the shuttle boxes of the loom by four The sequence in whichvibrator levers I20, I2], I22 and I23 which are conveniently located at the rear part of the head motion K. Each of. these levers will carry one of the previously described vibrator gears, and leading from two of the latter are connectors I25 and I26 connected respectively to levers I2? and I28 pivoted as at I29 to a fixed part of the head motion. Two long connectors I30 and I3! attached to the other vibrator gears are connected respectively to levers I32 and I33 pivoted as at [34 to the head frame. Each of the levers I32 and I33 has at its lower end. a sprocket wheel I35. Previously described box chain I6 is connect'ed to lever I21 and extends around the sprocket at the bottom of lever I32 and then leads to the right as viewed in Fig. 11 to pass around a guide sprocket I38 and thence down to and around a part of a large sprocket wheel I40 rotatable on stud I4I fastened to the loom frame. From sprocket I40 chain I6 leads as shown in Fig. l to connections to the gang GL.

The front lever I28 is connected to chain 23 which passes around the sheave at the bottom of lever I33 and thence passes over av sheave I43 and extends down around part of a second sheave I 44 rotatable freely on stud I4 I. This last named chain then connects as indicated in Fig. 1 to the boxes GR at the right end of the loom.

The draft of the pattern chain which controls the vibrator levers for the box motion, as indicated in Fig. 16, shows the box indications for twenty-eight consecutive picks corresponding to the sequence shown in Fig. 15. In Fig. 16 represents a low roll or sinker on the pattern chain 28 and X indicates a large roll. The vertical columns are divided into two pairs, the pair at the right giving indication for gang GR as controlled by the front vibrator levers I20 and I2I while the pair of columns at the left control the boxes GL through vibrator levers I22 and I23.

As shown in Fig. 16 the right pair of columns has its left spaces all occupied by 0, but the right spaces alternate in pairs in the sequence X-X, OO. All twenty-eight picks of the right hand pair of columns in Fig. 16 will be built according to this four-pick sequence and the gang GR is thus controlled to have the tour-pick sequence of movements already described.

The left hand pair of columns in Fig. 16 has that part thereof which corresponds to the normal or plain pick and pick weaving constructed in a manner similar to the right hand pair, but in addition provides. for an interruption of the sequence of movements of box GL when the distinctive Weft shuttle is to become active. Thus, the first twelve picks reading from the top down in the left pair of columns will be the same as the right pair but out of step therewith by one pick. During these first twelve picks the normal sequence of box movements will be as already described in connection with 15. Beginning at pick No. I3, however. there are four consecutive bars in the pattern chain Nos. I3 t I0, the left pair of rolls of which are the same to cause the interruption corresponding to positions XIII to XVI in Fig. 15. Beginning at pick No. I! the normal four-pick cvcle is reestablished and continues to pick No. 25, on which pick there is the second interruption which causes the shuttle boxes GL to have the positions XXV to XXVIII, Fig. 15.

The box chain operates in well-known manner to control the four vibrator levers and their connectorsand produces a sequenc of movements shown in Fig. 15. So long as normal weaving proceeds according to a four-pick cycle in gang GL, as represented by picks Nos. I to I2 and Nos. H to 24, in Fig. 13, the large sprocket wheel I will oscillate between two positions, but when the sequence of GL is interrupted to render cell I2 active sprocket I40 is given a third angular position which is used to control the selector 4'! by mechanism now to be described.

A cam I mounted on stud I4I, see Fig. 13, is held adjustably by bolt and slot connection I5l to sprocket I40 and cooperates with a lever I52 on a fixed pivot I53. A connecto I54 leads from lever I52 to another lever I55 pivoted on the head and in turn is connected by a rod I56 to a straight lever I51 pivoted onan arch of the loom frame. Rod I58 extends from lever I51 to chain I59 at the magazine end of the loom. So long as the top boxes I0 and II of the gang GL are active the oscillation of sprocket I 40 will be in that part of its angular motion which prevents cooperation between cam I50 and lever I52. When the normal sequenceof GL is interrupted the additional motion given to chain I6 for lifting box I2 to active position will move the sprocket far enough to cause cam I50 to rock lever I52 and exert a pull to the left on chain I59 as viewed in Fig. 2.

As shown in Fig. 2 chain I59 is attached to a lever mechanism I60 pivoted as at I6 I to a fixed support. Extending to the right from mechanism I60 is a connector I62 attached to the selector controlling lever IOI already described. When box IZ in gang GL is active lever IOI is pulled to its extreme left hand position to effect registry between the selector 41 and the vertical slide of the rearmost stack of bobbins 43. At other times the slackness oi the connection I59 will permit the selector to register with stacks 40, 4| or 42, dependent upon the position of a control cam I65.

As shown in Figs. 2, 3 and 4 cam I05 rotates with the ratchet wheel I00 and moves lever IOI successively to the left for three transfers, and then for the next three transfers permits spring I6I to move lever I 0| in the reverse direction toward the front of the magazine, causing lever I-0I to pass through the three positions indicated in Fig. 4. In this way the cam efiects a distribution in the selection of plain weft bobbins from stacks 40, 4! and. 42, and cam I50 is free to move lever IIII to its rearmost position regardless of the angular position of the cam I65.

The repeater mechanism just described including the cam I65 and the means for its operation, and its control of the selector 41, may be similar to the structure set forthin my 00- pending application Serial No. 389,570. The cam I65 shown in Fig. 4 causes a dwell in the operation of the selector in three different positions, but I do not wish to be limited to the cam of the type shown in Fig. 4.

It is believed that the operation of the mechanism will be understood from the description already given. Gang GR will be raised for two picks and then lowered for the next two picks and will continue operating in it four-pick cycle throughout loom operation. Because of this continued operation of gang GR I am not necessarily limited to a pattern chain for its control.

.The gang GL will also operate normally in a fourpick cycle in which box I0 will be active for two picks to be followed by two picks of activity on the part of box II so long as plain weft is being woven. When a stripe of decorative weft is called by the pattern chain 29 gang GL will have its normal sequence interrupted to place box I2 in theshuttle in the cell will be replenished on the next forward beat of the'lay, or the second pick during which cell 20 is inactive. The replenishment occurs whenever exhaustion is indicated in cell 20 whether the latter contains a plain weft shuttle or the distinctive weft shuttle. That shift of gang 'GL which places the decorativ shuttle in action also causes'rocking of the large sprocket I40 sufficient to move the selector 41 to rearmost position where it is in registry with the stack of reserve bobbins corresponding to the distinctive weft shuttle.

On the last pick of the interruption, that is, on pick No. I6, as indicated in Fig. '16, the distinctive weft shuttle is picked back to the gang GL, but in order that it may not be incorporated into the fabric being woven the harness chain 281s built so that all the harness frames will be down and shuttle G will pass over the warp threads and enter box I2 without leaving a pick in the warp shed.

If the pattern will permit two decorative stripes separated by a pair of plain wefts, the harnesses will not be leveled and the distinctive weft shuttle will pass through the shed on its return motion to the gang GL.

In the foregoing description only one distinctive weft shuttle has been mentioned, but it is possible to extend my invention touse with more than one shuttle, as in the modification shown to 28 with gang GL positioned to render a second distinctive weft'shuttle R active. In'Fig. l7 gang GL will be inits highest possible position with cells I0, II and I2 inactive and with cell I3 in picking position. The only difference between positions XXV to XXVIII in Fig. 1'1 and the corresponding positions shown inFig. 15 is that the bottom cell I3 has been raised "to picking position so that a second distinctiveweft shuttle R can be manipulated as was shuttle G in the four-pick sequence indicated at positions XIII to XVI, Fig. 15. At the end of the sequence shown in Fig. 1'7 gang G will return to the position shown in XXIX in Fig. 15 and normal plain weft weaving will be resumed.

' Fig. 18 shows the modification in the chain draft which will be necessary to move box I3 in the gang GL to active position. In this figure it is assumed that the first twenty-four bars of the 'chain, not indicated, are as indicated in Fig. 16,

the picks numbered 25 to 28 in Fig. '18 corresponding to the same numbered picks in Fig. 16. InFig. 18 the left hand pair of columns have all their spaces occupied by X indicating that the pattern chain will be made with two high rolls for these four picks to keep the vibrator levers I20 and I2I in high position duringthe four picks of interruption.

When two distinctive weft shuttles are be used the three plain weft shuttles will be replenished from the front pair of stacks 40; and H in the magazine, therear stacks 42 and 43 being reservedfor the distinctive weft, and It will be necessary to change the cam on sprocket wheel I40 and also the cam on the magazine; repeater for the color selector 41; s

As shown in Fig. 19 sprocket wheel I40 has secured thereto a cam I10 having alow dwell I1I corresponding to that'shown in contact with lever 52in Fig. 13, has an intermediate dwell I12 for shuttle G and stack 42, and has also a high dwell I13 for shuttle R and stack 43.. 0am

I10 will be so located on sprocket I40 that the latter can rock when the top pair of cells I0 and II. of gang GL are active without actuating lever I52. When cell I2 in gang GL is active intermediate dwell I12 will move lever I52 in a counter-clockwise direction to an-intermediate position to move chain I59 to the left as viewed in Fig. 2 to an Intermediate position. and when cell I3 of gang GL is active sprocket I40 will be turned sufliciently to causes. high dwell I13 to give lever I52 a further rocking movement to its extreme position, the effect of which is to move chain I58 to the limit of its left hand motion as viewed in Fig.2.

Cam I65 of the preferred form is replaced by cam I15 having three low dwells I18 alternated with high dwells I11.

Cam I-15 will be secured to the ratchet wheel I00 and will serve to shift the selector 41 alternately into registry first with stack 40 and then stack 4I to distribute between these two stacks selections of plain bobbins'for replenishment of the three plain weft shuttles I, 2 and 3. As in the preferred form chain I58 can be pulled away from cam I15 at any proper time inthe shuttle sequence to move the selector into registry with either

stack

42 or 43, depending upon whether shuttle G or shuttle R is active.

To prevent disturbance of the order in which plain weft bobbins are drawn from their. stacks -I provide a shield for the actuatorpawl of the repeater mechanism. This shield operates to prevent turning the repeater ratchet whenever a transfer occurs involving a bobbin from the stack or stacks corresponding to the distinctive weft.

By the use of this shield the bobbins in the plain 'Lever I has a guard or shield I82 which can be positioned for engagement with the pawl 88. The lever I80 is attached to lever IOI ofthe selector mechanism by means of a connector I83 the 'right'end of which as viewed in Fig. 21 can enter either a forward hole I84 or a 'rear hole I85 in lever I80. When a single shuttle of distinctive weft is used the connector I83 will enter the rear hole I85 and cause the shield I82 to disable the pawl when the selector moves to its rearmost position. When two distinctive weft shuttles are employed the connector I83 enters hole I84 to cause the shield I82 to disable the pawl when the selector is registered with either of the rear bobbin stacks 42 or 43. The shield illustratedin Fig. 21 may be similar to that set forth in my I co-pending application Serial No. 389,570 and its position is controlled by the cam on sprocket is used hole I85 will receive the connector I83, but when cam I for two distinctive weft shuttles is used hole I84 will receive the connector From the foregoing it will be seen that I have provided a filling mixing pick and pick weft replenishing loom in which a decorative stripe can be introduced by controlling the shifting of the gang GL in such a way as to pickthe distinctive weft shuttle into the top box of the gang GR on the pick immediately preceding movement of cell 20 to inactive position. It will be seen that this feature is provided by interrupting the normal shiftings of the gang GLin definite timed relation with respect to the shiftings of the gang GR, and that because of the control already described it is possible to replenish the fancy weft shuttle as well as the shuttle carrying plain weft. It will further be seen that the sprocket I40 controls the movements of cam I59 for the purpose of moving the selector 4'! into registry with the rearmost stack of reserve bobbins corresponding to the distinctive weft shuttle when the latter becomes active. It will further be seen that my invention is capable of use with more than one distinctive weft shuttle, the pattern chain, and the cams on the magazine repeater and sprocket wheel I40 being changed to agree with the number of distinctive weft shuttles to be used. It will further be seen that I have provided a shield for the repeater actuating pawl the position of which is controlled by the cam on sprocket wheel I40, the position of which in turn is determined by the longitudinal location of the box lifter chain for gang GL Having thus described my invention it will be seen that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

1. In a weft replenishing pick and pick loom operating with a plurality of plain weft shuttles which normally follow each other in rotation at one pick intervals, the loom having also a distinctive weft shuttle, a magazine having a group of reserve plain weftscorresponding to the wefts of said plurality of plain Weft shuttles and having also a group of distinctive wefts corresponding to said distinctive Weft shuttle, a lay, a pair of shuttle boxes on said lay at the magazine end of the loom operating in successive four-pick cycles during the first two picks of each of which one box thereof is inactive and then active during the next two picks, means to replenish any exhausted shuttle in said one box when the latter is inactive with a reserve bobbin drawn from the group of reserve bobbins corresponding to the ex hausted shuttle, a gang of three shuttle boxes on the lay at the opposite end of the loom operating normally in a four-pick cycle in which a pair of boxes in said gang are alternately active each for two successive picks, the third box of said gang being a normally inactive home box for the distinctive weft shuttle, means to interrupt the normal operation of said gang to move the third shuttle box thereof to active position on a pick immediately prior to the first two picks when said one box of said pair of shuttle boxes is to become inactive, and means to pick shut tle in a box in said gang in active position into said one box of said pair.

2. In a weft replenishing pick and pick loom operating with a plurality of shuttles a group of which'all carry ground weft of the same kind which normally follow each other in rotation at one pick intervals and one of which carries distinctive weft different from the ground weft, a lay, a pair of shuttle boxes on one end of the lay operating in successive four-pick sequences to place the top shuttle box in inactive position for the first two picks of any sequence and in active position for the last two picks of the sequence, means to replenish any shuttle when exhausted and in the top box during the first two picks of a sequence with reserve Weft of the kind carried by the exhausted shuttle, a gang of shuttle box cells on the other end of the lay cer tain cells of which cooperate with the ground weft shuttles and one of which is a home box for said distinctive weft shuttle, means operative normally to shift said gang with respect to the lay to move said certain cells to cooperate with said plain weft shuttles in a given order during weaving of ground weft with the home box nor mally in an inactive position, and means to interrupt the normal shifting of said gang to move said home box to active position on a pick immediately preceding the first pick of a four-pick sequence of'movements of said pair of boxes.

3. In a weft replenishing pick and pick loom operating with a plurality of shuttles a group of which all carry plain weft of the same kind which normally follow each other in rotation at one pick intervals and one of which carries distinctive weft, a lay, a pair of shuttle boxes on one end of the lay operating in successive fourpick sequences to place the top shuttle box in inactive position for the first two picks of any sequence and in active position for the last two picks of the sequence, means to replenish any shuttle when exhausted and in the top box during the first two picks of a sequence, a gang of shuttle boxes on the other end of the lay having certain boxes for cooperating with said plain weft shuttles and having a home box for the distinctive weft shuttle, a pattern chain for said gang of shuttle boxes, box shifting mechanism for said gang controlled by the chain, said chain constructed to cause said box shifting mechanism normally to move the gang to place the boxes cooperating with the plain weft shuttles in active position in predetermined normal order during the weaving of plain weft and maintain said home box normally inactive, and said chain having a portion thereof to interrupt the normal movements of the gang and move the home box for the distinctive weft shuttle to active position on a pick immediately preceding the startof a four-pick sequence of movements of said pair of boxes.

4. In a Weft replenishing pick and pick loom having a lay with picking mechanism at each end thereof and operating with a set of plain weft shuttle all carrying weft of substantially the same type which normally follow each other in rotation at one pick intervals and operating also with a shuttle having distinctive weft, a pair of shifting shuttle boxes on the lay at one end thereof shifting in successivefour-pick sequences each of which starts with two picks in which the top shuttle box is inactiveandends with two picks in which the top shuttle box is active, means to replenish any exhausted shuttle in the top shuttle box of said pair during the first two picks of a sequence with weft corresponding to the weft of the exhausted shuttle in said top box, a gang of shuttle boxes on the lay at the opposite end of the loom including a plurality of box cells to cooperate with said plain weft shuttles and includingalso a home box for said distinctive weft shuttle, a pattern chain for said gang of shuttle boxes, shuttle box operating mechanism for saidgang controlled by the pattern chain, said chain having a portion thereof built i to cause the box operating mechanism normally to move the cells which cooperate with the plain weft shuttles to active position in a given normal order during the weaving of plain weft and maintain said home box normally inactive, and said pattern chain having a portion to interrupt the normal movements of said gang and cause the the gang thereafter picking said distinctive weft shuttle into the top box at the magazine end.

5. In a weft replenishing pick and pick loom having a lay with picking mechanism at each end thereof and operating with a set of plain weft shuttles all carrying weft of substantially the same type which normally follow each other in rotation at one pick intervals and operating also with a shuttle having distinctive Weft, a pair of shifting shuttle boxes on the lay at one end thereof shifting in successive four-pick sequences each of which starts with two picks in which the top shuttle box of said pair is inactive and ends with two picks in which said top shuttle box is "active, 'means to replenish any exhausted shuttle in thetop shuttle box during the first two picks of a sequence with weft corresponding to the weft of the exhausted shuttle in said top box, a gang of shuttle boxes on the other end of the lay including a group of cells to cooperate with the 7 plain weft shuttles, the sum of said group of cells -anism normally to move said group of cells of the gang to active position in a given normal order during the weaving of plain weft, said portion of the chain being followed by another portion which interrupts the normal movements of the gang and moves said home shuttle box to active position on a pick of the loom corresponding I to the last pick of a four-pick sequence of said pair of boxes when distinctive Weft is to be woven.

6. In a weft replenishing pick and pick loom having a lay with picking mechanism at each end thereof and operating with a set of plain weft shuttles all carrying weft of substantially the same type which normally follow each other in rotation at one pick intervals and operating also with a shuttle having distinctive weft, a pair of shifting shuttle boxes on one end of the lay shifting in successive four-pick sequences each of which starts with two picks in which the top shuttle box is inactive and ends with two picks in which the top shuttle box is active, means to replenish any exhausted shuttle in the top shuttle box during the first two picks of a sequence with weft corresponding to' the weft of the exhausted shuttle in said top box, a gang of shuttle boxes on the other end of the lay including a group of cells to cooperate with the plain weft shuttles and including also a home box for said distinctive weft shuttle, mechanism normally operative to place the cells of said group in active position one at a time and in given normal order and in timed relation with the sequence of the boxes at the magazine end when plain weft is to be woven to cause said plain weft shuttles normally to follow each other in rotation at one pick intervals and maintain said home box in inactive position during the shiftings of said group while plain weft is being woven, said mechanism effective to interrupt the normal shiftings of said group and move said home box to active position at a timein the loom operation 'suclrthat the shuttle in said home box will be picked into the top box in said pair immediately prior to the start of a four-pick cycle of movements of said pair of shuttle boxes.

7. In a weft replenishing pick and pick loom having a lay with picking mechanism at each end thereof and operating with a set of plain weft shuttles all carrying weft of substantially the same type which normally follow each other in rotation at one pick intervals and operating also with a shuttle having distinctive weft, a pair of shifting shuttle boxes on the lay at the magazine end thereof shifting in successive four-pick sequences each of which starts with two picks'in which the top shuttle box is inactive and ends with two picks in which the top shuttle box is active, means to replenish any exhausted shuttle in the top' shuttle box during the first two picks of a sequence with weft corresponding to the weft of the exhausted shuttle in said top box, said pair of boxes moving in said four-pick sequence of movements throughout the weaving of a complete pattern repeat, a gang of shuttle boxes on the other end of the 100m including a group of cells to cooperate with the plain weft shuttles and including a home box for the distinctive weft shuttle, and shuttle box gang operating'mechanism effective during the weaving of a plain part of the pattern repeat to move the cells of said group in a normal sequence and one at a time to active position, said mechanism effective during the same pattern repeat to interrupt the normal movements of said group and move said home box to active position on that pick of the loom corresponding to the last pick ofa fourpick sequence of said pair of shuttle boxes to cause the distinctive weft shuttle to be picked into the top box of said pair of boxes immediately before said top box is to be inactive for the first two picks of a four-pick sequence. a

8. In a weft replenishing pick and pick loom having a lay and picking mechanism at each end thereof and operating with three plainrweft shuttles which normally follow each other in rotation at one pick intervals and a distinctive weft shuttle, top and bottom shuttle boxes at one end of the lay moving in successive four-pick sequences during the first two picks of each of which the top shuttle box is inactive and during the second two picks of each of which the top a including a pair of cells to cooperate with the plain weft shuttles, said gang having also a home box for the distinctive weft shuttle, and operating mechanism for said gang of shuttle boxes effective to give said gang a normal order of shifting during the weaving of plain weft to place one of said cells of the pair in active position for two picks and the other cell of said pair in ac tive position for the next two picks to cause said three shuttles to follow each other at one-pick intervals and in rotation, said mechanism operative to interrupt the normal shiftings of said gang to place the home box of said distinctive weft shuttle in picking position on that pick of the loom immediately preceding the start of a four-pick sequence of said pair of shuttle boxes to cause said distinctive weft to be picked into the top box of said top and bottom shuttle boxes immediately before said top box is to become inactive for two picks.

9. In a weft replenishing pick and pick loom having a lay and picking mechanism at each end thereof and operating with three plain weft shuttles which normally follow each other in rotation at one pickintervals and a distinctive weft shuttle, a pair of shuttle boxes at each end of the lay, mechanism normally operative to shift each of said pairs in a four-pick sequence, the sequences being out of step by one pick, the top box at one end of the lay to be inactive for two picks and then active for the next two picks of every fourpick cycle thereof, said picking mechanism and boxes causing said three shuttles to follow each other at one-pick intervals and in rotation to weave plain weft, means at the replenishing end of the loom to replenish any shuttle in said top box when exhausted with reserve weft corresponding to the weft thereof during the first two picks of a four-pick cycle when said top box at said one end of the lay is inactive, and a normally inactive third box moving with the two boxes on the lay at the end thereof opposite the replenishing end of the loom serving as a home box for said distinctive weft shuttle, and mechanism to operate said third box and the pair of K boxes moving therewith effective to interrupt the normal movements of said pair of boxes moving with the home box and place the latter in picking position on that pick of the loom prior to the start of a four-pick cycle of the two boxes at the replenishing end of the loom to cause the distinctive weft shuttle to be picked into the top box at the replenishing end immediately prior to the two picks during which said top box is inactive.

10. In a weft replenishing loom having a group of stacks of reserve bobbins all of the same kind and a stack of distinctive reserve bobbins, a selector for the stacks, means to control the selector and cause the same to register with the stacks of the group one at a time, a gang of shuttle boxes including a group of boxes to cooperate with shuttles corresponding to the weft in the group of stacks and having also a home box for a shuttle corresponding to the distinctive weft stack, positioning mechanism for the gang of shuttle boxes capable of moving any box to active position, a member movable by the positioning mechanism to different positions corresponding to the positions of the gang of shuttle boxes, and connections between said member and the selector, said connections being inoperatively related to said member when any box in said group of boxes is active and said means controls said selector, and said member constructed to move the connections and cause the selector to move away from said means and into register with said distinctive stack when said home box is active.

11. In a weft replenishing loom having a group of stacks of reserve bobbins all of the same kind and a stack of distinctive reserve bobbins, a selector for the stacks, means to control the selector and cause the same to register with the stacks of the group one at a time, a gang of shuttle boxes including a group of boxes to cooperate with shuttles having weft corresponding to the weft in the group of stacks and having also a home box for a shuttle having weft corresponding to the weft of said distinctive stack, positioning mechanism for the gang of shuttle boxes including a chain capable of moving any box to active position, a sprocket meshing with the chain and movable to different angular positions corresponding to the positions of said gang of boxes, a cam on said. sprocket movable therewith, and connections between the cam and the selector, said connections being inoperatively related with respect to the cam when any box in said group of boxes is active and said control means controls said selector, and the cam moving said connections to cause the selector to move out or" control with said control means and register with said distinctive stack when said home box is active.

the weft in the group of stacks and having also a home box for a shuttle having weft corresponding to the distinctive weft stack, positioning mechanism for the gang of shuttle boxes capable of moving any box to active position, a member connected to and moved by said positioning mechanism to positions corresponding to the different positions of all the boxes of said gang, and connections between said member and the selector to be operated by said member, said member and connections so constructed that when the member moves to positions corresponding to active positions of the boxes in said group and the control means controls said selector the connections remain substantially stationary but when said member moves to a position corresponding to the active position of said home box said connections are'actuated to move the selector into register with said distinctive stack.

13. In a weft replenishing loom having a group of stacks of plain weft reserve bobbins all of the same kind and a group of distinctive weft reserve bobbins, a selector for the stacks, means to move the selector into register with the stacks of the group one at a time, a gang of shuttle boxes including a group of boxes to cooperate with shuttles having weft corresponding to the weft in the group of stacks and having also a home box for a shuttle having weft corresponding to the distinctive weft stack, positioning mechanism for the gang of shuttle boxes capable of moving any box to active position, a cam having high and low areas, a lever to cooperate with the cam, connections between the cam and the positioning mechanism for the boxes to cause the low area of the cam to register with said lever when any box in said group is active and move the high area of the cam into register with the lever when said home box is active, and connections between the lever and the selector to move the latter into register with said distinctive'stack when the high area of said cam is in register with said lever. v

RICHARD G. TURNER.