US2364978A - Bobbin selector mechanism for weft replenishing looms - Google Patents

Description

Dec. 12, 1944. v. H. JENNINGS BOBBIN SELECTOR MECHANISM FOR WEFT REPLENISHING LOOMS 3 Sheeis-Sheet 1 Filed 001:. 23, 1943 INVENTOR VICTOR H.JENNINGS H wg v ATTORNEY Dec. 12,1944.

V. H. JENNINGS BOBBIN SELECTOR MECHANISM FOR WEFT REPLENISHING LOOMS Filed Oct. 23, 1945 3 Sheets-Sheet 2 INVENTOR VICTOR H. JENNINGS ATTORNEY Dec. 12, 1944. v. -|-1. JENNINGS 2,364,978

BOBBIN SELECT-OR MECHANISM FOR WEFT REPLENISHING L-OOMS Filed Oct. 23, 1945 3 Sheets-Sheet 3 INVENTOR VICTOR H. JENNINGS BY awn 'ATTORNEY successive picks.

Patented Dec. 12, 1944 BOBBIN SELECTOR MECHANISM FOR REPLENISHING LOOMS Victor H. Jennings, Worcester, Mass.-, assignor to Crompton & Knowles Loom Works, Worcester, Mass, a corporation of Massachusetts Application October 23, 1943, Serial- No. -0'l-Al0 I 13 Claims.

This invention relates to improvements in weft replenishing looms and it is the general object of the invention to provide-a loom wherein each of a plurality of shuttles canbe replenished by bobbins drawn from a plurality of stacks of bobbins.

In the weaving of certain fabrics it is desirable to effect a mixing of the weft by the use of shuttles which are alternately active. By this procedure any slight variation in the color or weight of the weft will not show in the fabric, since weft of one tint by one shuttle will beclose to weft of a slightly different tint laid-byanother shuttle and there will be a resultant blending of the tints. One form of filling mixing loomemploys two shuttles which are alternateh active for two In the replenishing of shuttles in such a loom it is desirable to have as large a supply of reserve bobbins as possible.

When a four stack stationarymagazinev is used each of twopairs of stacks can provide bobbins for replenishing its-shuttle, and the bobbins for any shuttle can be drawn alternately from. the corresponding pair of stacks so thatthe latter will be depleted uniformly. Inmecha-nisms' heretofore proposed for accomplishing this result. the

the action of the spring to register with the several stacks by a force derived from the shifting shuttle boxes at the opposite end of the loom, or some part moving in timed relation with the boxes. In order that the selector may register either with the third or fourth stack it is another object of my present invention to introduce a spring or the like in the connection between the selector and the shifting shuttle boxes, this spring being stronger than the usual spring which tends to move the color slide forwardly. By employing these two springs I am able to introduce a stop for the selector for each pair of stacks and move .each stop into. and out of stopping position so stack selector ism'odified and: its control altered so that the selector occupies only two positions, one for each pair of stacks. It is: desirable, however, that the selector be of usual form so. that the magazine canbe converted from filling mix- I ing weaving to multicolor weaving wherein. the selector must be able to register with each stack. of the magazine... It is accordingly an important object of my present invention: to provide a stationary multi-stackmagazine with mechanism for drawing bobbins alternately from each pair of stacks by theuse of the usual: type of selector or color slide.

In applicationSerial No. 490,151 haveshown a loom in. which a: single pair of stacks can be used for the replenishment of one shuttle and. wherein each of two other shuttles can be replenished by a, single stack. The 100m: shown in that application is adaptedv more particularly for the weaving of such fabrics as employ a coarse decorative weft interwoven with a fine ground weft. It is another objeet ofm'y present invention to adapt a part of the structure shown in the aforementioned application for use ina filling mixing loom employing twoshuttles each having its pair of stacks of reservebobbins. Th stack selector of the usual stationary magzineis urgedforwardly to" registerwith the front stack by'a spring andis-moved-rearw-ardlyagainst that the selector will register alternately with the stacks of a pair.

' In the aforesaid application I have shown a rocking leverfor one pair of stacks to control the position of a stop and have also set forth a system of levers between the box motion and the selector which tends to give the latter a, disproportionately largedisplacement with respect to the displacement of. the shifting shuttle boxes. In my present invention I provide a shifting lever for each pair of stacks and arrange the leverage between the box motion and the selector so that the latter tends either to register with the front stack or theback stack but can be arrested in its movement to these two positions by'stops which register the selector with either the second or the third. stack. Theselector can therefore register witheach stack, a condition which simplifies conversion to the usual four color automatic loom.

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

Inthe accompanying drawings, wherein a convenient embodiment of my invention is set forth,

Fig.v 1: is aside elevation. showing a multi-color weft replenishing mechanism. as viewed from the center of the loom and having my invention applied thereto,

Fig. 2 is a vertical section on line 2-2 of Fig. 1,

Fig. 3 is an. enlarged side elevation of the front pair of vertical bobbin releasers and the control mechanism therefor. shown in position to effect delivery of a bobbin from the front stack,

Fig. 4 is a view similar to Fig. 3 but showing the rear pair of bobbin releasers and their control mechanism in position to efiect delivery of a bobbin: from the. last or rearmost stack,

Fig. 521s a diagrammatic view showing the connection betweenthe shifting shuttle: boxes at the end of the loom opposite the magazine and the stack selector,

Fig. 6 is a diagonal section on line 6-5 of Fig. 3,

Figs. 7 to 10 are diagrammatic views showing the selector, stops and releasers in different positions,

Fig. 11 is a vertical section on line' lI-l I, Fig. 3, and

Fig. 12 is a view similar to part of Fig. 1 but showing a modified form of connection between the shuttle box connector and the stack selector lever.

A loom of the type to which my invention more particularly relates has a lay provided with a gang G of two shuttle boxes A and B at the left side and a single shuttle box C at the right side. The gang is controlled by the usual box shifting mechanism not shown so that either box can register with the lay Id. The gang will ordinarily shift every second pick of the loom so that box A is active for two consecutive picks, box B is active for the next pair of picks, box A is again active for two consecutive picks, etc. A connector I I extends from the gang G and is trained around sheaves l2 and I3 and then extending upwardly at the magazine end for attachment to lever l5 pivoted at IE on the magazine designated generally at M. A spring H has the upper end thereof anchored with respect to the magazine and has the lower end connected to a rearwardly extending arm l8 of lever l5. The lever has an upwardly extending arm l9 having driving relation with a collar 20 forming part of a selector designated generally at 2i and including a rod 22 carrying the collar and slidable in front and back bearings 23 and 24, respectively, on the magazine.

The arms I8 and I9 are so proportioned that the shifting of the gang G will move arm l9 and the selector 2! from one extreme longitudinal position thereof to itsother extreme position, the selector being moved by'spring IT to its extreme front position shown in Fig. 1 when gang G is down and box A is active. When gang G shifts upwardly and box B is active, arm [9 will be rocked rearwardly to move the selector to its rearmost position.

The magazine in the present instance has four bobbin stacks arranged from front to back and indicated in Fig. 1 at 25, 26, 27 and 28. These stacks are provided with reserve bobbins all of which may be of the same general type, or if preferred, the front pair of stacks can be provided with one type of weft and the rear pair with another type of weft. Each stack is associated with a vertically slidable bobbin releaser, these releasers being shown at 30, 3|, 32 and 33. Each releaser has a lifting lug 35 and a depressing lug 36 and the selector is provided with front and back fingers 31 and 38, respectively, cooperating with the releasers of the front and back pairs of stacks, respectively. As the selector 2| shifts its fingers will register with one or another of the releasers under control of mechanism to be described.

In addition to the longitudinal movement already described the selector also has a rocking movement imparted to it by a floating lever mounted on the upper end of a vertically reciprocating rod 4|. This lever is under control of the weft detector D and is connected to the selector by a rod 42. When a shuttle is at the magazine end of the loom its weft will be'contacted by the detector D, and if sufficient weft for continued weaving is present a controller pin 43 will be moved forwardly out of thepath of lever 40 depleted of weft the detector will permit controller pin 43 to remain in the path of lever 40 and as the rod 4| descends it will cause down motion of rod 42 and a consequent rocking of the selector in a counter-clockwise direction as viewed in Fig. 2 to raise its fingers 31 and 38. Whichever releaser happens to be in register with the selector will therefore be raised and there will be a corresponding rocking of the associated bobbin cradle 45 to advance a bobbin from the corresponding stack toward transfer position.

The shuttle will then be picked to the opposite side of the loom and the gang G will shift to effect a longitudinal movement of the selector 2| so that it will be out of register with the previously raised releaser. Upon return of the depleted shuttle to activity, however, the selector will register with the elevated releaser and lever 40 will be given an up motion due to rising of rod 4| and act through rod 42 to rock the selectorin a clockwise direction as viewed in Fig. 2 to depress its fingers 31 and 38. The previously raised slide is therefore depressed and the corresponding cradle 45 is rocked in the reverse direction to deliver the previously received bobbin so that it can move to transfer position under a transferrer arm part of which is shown at 46.

The upper part of the magazine is provided with a second shaft which rocks in bearings 51 on the magazine frame and has secured thereto a shelf 52. Each releaser is provided with a dog 55 normally in the idle position indicated in Fig. 2 when the releaser is down. When a releaser is raised, however, a spring 56 on the releaser moves the dog outwardly from its releaser and over the shelf 52, and as the releaser descends the shelf is lowered to rock shaft 50 in a clockwise direction as viewed in Fig. 2, thereby moving the shuttle feeler 5'! rearwardly to transfer position and effecting up movement of a transferrer latch 58 to transfer position in the path of a hunter 59 on the lay by means of a connector 60 under control of shaft 50. When a raisedreleaser is depressed its dog resumes normal idle position so as rod 4! descends. If, however, the shuttle is 7 that it will not interfere with the subsequent upward movement of shelf 55 which occurs as the advancing lay L moves the shuttle feeler 51 forwardly about its stationary pivot Bl to reset the top shaft 5 0 by a force transmitted through rod 62. It is customary in mechanisms of this type to employ a spring plunger 65 to cooperate with a wedge 66 on each releaser.

The matter thus far described, except the control of the selector by the gang G, operates in the usual manner, indication of exhaustion by the detector D raising the selector fingers 31 and 38, and the periodic upward movement of rod 4| lowering the fingers at regularly recurring two-pick intervals as soon as the gang G has completed its shift. The rocking of the selector effects reciprocation of the releasers, while the longitudinal shifting of the selector determines which releaser shall be moved.

My present invention relates to means by which the front pair of stacks 25 and 26 can be caused to supply bobbins for replenishing shuttle S in box A, while bobbins derived from stacks 21 and 28 can be used to replenish shuttle S in box B. Each pair of stacks is provided with a mechanism. which causes an alternation in the reciprocation of the associated pair of releasers and since the alternating mechanisms are similar only one of them will be described in detail.

u As shown in Figs. 1 and 3, releaser 30 is provided with an upward extension 10 having a head TI and a second dog I2 pivoted to the extension at 1:3 and under control of a compression, spring I4 which tends to. move the dog outwardly or to the right. A plateI5 secured to the magazine has a lug I6 which engages and holds the dog I2 idle when the releaser 30 is down.

The releaser 3| is similarly providedwith an upward extension 80 having a head BI provided with a dog 82 pivoted at 83 and acted on by a spring 84 similar to spring 14. Spring 84 tends to move the dog 82 to the left from its idle position when the releaser 3| is raised. When releaser3l is down the dog 82 will engage a second lug 85 on plate I5 and be held in idle position.

Plate I5 has a frontiwall 86 on which a lever 81 is pivoted to the plate at 88. The forward or right end of lever 81 as viewed in Fig. 3 is provided with a stud 89 for engagement with dog I2, while the rear end of the lever is provided with another stud 90 for cooperation with the dog 82. A spring 9| acts frictionally as indicated in Fig. 6 to hold the lever 81 in any position to which it may be moved. The studs 80 and 90 lie beyond the idle position of their respective dogs I2 and 82 and therefore can move upwardly without interference by the dogs.

A rod 95 is slotted at its upper end as at 96 to receive a controller or stud 91 on lever 81 to the right of pivot 88, as shown in Fig. 3. The lower end of rod 95 is secured to an inverted U-shaped stop I having two depending arms I.0I which straddle rod 22, see Fig. 11. The selector is made with a front hub I04 corresponding to finger 31 and a rear hub I04 corresponding to finger 38, see Fig. '7. When down the stop I00 is adapted for engagement with the hub I04 of finger 31, or some other appropriate part moving with the selector 2|, but when the stop I00 is up the selector can move to its frontmost position under the stop and register with releaser 30.

Assuming the parts to be in the position shown in Fig. 3 with the right end of lever 81 and stud 89 raised, the rod 95 will hold the stop I00 in high position and the selector will register with releaser 30 as shown in Fig. 7 when shuttle box A and the shuttle S are active. If welt exhaustion is indicated in shuttle S upon its arrival at the magazine end of the loom releaser 30 will be raised and the dog 12 will be moved by spring I4 to its active position over stud 89 as shown in dotted lines in Fig. 3. Upon descent of releaser 30 the dog I2 will engage stud 89 and rock lever 81 in a clockwise direction as viewed in Fig. 3 to the position shown in Fig. 1, therebyraising stud 90 for cooperation with dog 82 at a subsequent replenishing operation of the loom and also lowering rod 95 so that the stop I00 can move by gravity to stopping position when able to do so.

Shuttle S will then be picked to the opposite side of the loom and gang G will shift, whereupon the selector will move rearwardly and stop I00 will fall to its low position between bearing 23 and the selector to the position shown in Fig. 8. Upon return of shuttle S to action the selector 2| will be moved forwardly by spring I! but will be arrested by stop I00 to register with releaser 3I. At the next replenishment of shuttle S, therefore, the dog 02 will engage stud 90 as releaser 3I descends in the same manner as that already described for the parts associated with the releaser 30, and lever 81 will be given a reverse rockingmovement and return to the position shown in Fig. 3. Rod and stop I00 are now out of stopping position and are back to the position shown in Fig. 7. At, a later return to activity of shuttle S, spring II will move the releaser 2I to its, extreme forward position in register with releaser 30.

In this way the successive releases of bobbins from the front pair of stacks draw bobbins alternately from the stacks 25 and 26 and the latter are uniformly depleted.

The mechanism for controlling the rear position of selector 2I and associated with the rear pair of stacks 21 and 28 is very similar to that already described, and is shown in Fig. 4.

Each of the releasers 32 and 33' is provided with an upward extension H0 and a dog III. A sec-.

and plate II2 similar to plate I5 is fastened to the magazine and cooperates with the dogs IIIi tokeep them in idle position when the releasers, 32 and 33 are down. A lever II5 similar to lever 87 is pivoted on the plate H2 and has front and back lugs II 6. and III, respectively, for cooperation with their corresponding-dogs. A rod I20 similar to rod is connected to lever H5, in this case however, to the left of the lever pivot. H8. The lower end of the rod I20 is provided with a stop I2I similar to stop I00 but reversed as to its setting and has arms I22 to straddle the shaft 22. 4

Assuming that the left end of lever I I5 and its lug II! are in high position to. raise stop I2I out of the path of selector 2I, and assuming further that shuttle S is active so that the connector II has rocked the lever I5 to its extreme left hand position as shown in Fig. 9, they selector will register'with releaser 33. If the shuttle S is depleted on arrival at the magazine end of the loom, releaser 33 rises and its dog III will overhang lug 1, as shown in full lines, Fig. 4. Downward movement of releaser 33 will rock lever II5 from the full to the dotted line position of Fig. 4 to raise lug H6 and also permit stop I2I to fall to stopping position when it is able to do so. Shuttle S is then picked to the opposite side of the loom, shuttle S is again active and selector 2| moves forwardly to permit stop I2I to fall from the position of Fig. 9 to the position of Fig. 10- between the selector and bearing 24.

.When shuttle S is again active the upward shift of gang G will exert a pull on connector II tending to move the selector to its rearmost position, but since stop I2I is in position to engage rear hub I04 it causes the selector to register with releaser 32, and provision must tion of Fig. 9 to the open position of Fig. 10 as the gang G continues to rise after selector 2| has engaged stop I2I.

When shuttle S again needs replenishing releaser 32 will be raised and upon subsequent depression its dog III will engage lug Ilfi to rock lever II5 back to the full line position-of Fig. 4, thereby raising the stop I2I. return to action of shuttle S after stop l2l has been raised the selector 2I will move to its rearmost position without stretching spring Obviously spring I30 is stronger than spring I].

In the foregoing description I have set forth two springs for controlling the position of the in the box motion connector.

Upon the next.

to connect the springs and the shuttle box control to the selector in such a, way that the relative strength of the spring is immaterial. Thus, in Fig. 12 I have shown a lever I35 the upper end of which is similar to lever I5, but having an arm I36 adapted for cooperation with a modified form of attachment with the box connector. Arm I35 carries a swivel I21 freely rotatable on the arm and a rod I38 is slidable vertically through the swivel. The upper end of rod I38 is provided with an adjusting nut I40 between which and the swivel is located a compression spring I 4I.

Below and normally engaging the swivel is a collar I42 secured to the rod and receiving the upward thrust of a, second compression spring I43 the lower end of which exerts its pressure against a fixed bracket I44. The lower end of the rod may have threaded thereto a head I45 attached to a connector I46 which extends directly to the box motion control and except for spring I30 is similar to connector II.

In this modified form of selector control slackening of the tension of connector I46 will permit spring I43 to expand and rock the lever I35 to its extreme right hand position and register the selector with the first stack. If the front stop is down expansion of spring I43 will be arrested and the selector will register with the second stack. When the selector is to cooperate with the releasers of the back pair of stacks the connector I46 will be pulled by the box motion and exert a downward pull on the nut I40, thereby exerting a force on a spring I4I which tends to turn the lever I35 in a counterclockwise direction as viewed in Fig. 12. If the rear stop is up spring I4I will undergo little if any compression and the selector will register with the rearmost releaser, but if the rear stop is down spring I4I will be subjected to additional compression when the selector strikes the stop as the connector I46 continues to move downwardly.

It will be obvious from Fig. 12 that each of the springs I4I and I43 performs its positioning function independently of the other and that they may therefore be of the same or different strengths. As is the case in the spring arrangement first described, however, one spring tends to move the selector into registry with the releasers of the first stack when the connector from the box motion is slackened, and the other spring tends to move the selector into register with the releasers of the rear pair of stacks when the box motion connector is tensioned. Both springs in both arrangements undergo deformation when opposed by a stop.

From the foregoing it will be seen that I have provided a weit replenishing loom wherein each of two shuttles which are alternately active can be replenished from a pair of stacks of reserve bobbins by the use of a selector 2| of usual form, thereby permitting conversion of the loom to the regular automatic operation wherein four different colors can be used in the magazine. It will also be seen that I have provided a stop for each end of selector 2I, the front stop I being alternately in and out of stopping position to cause alternate drawing of bobbins from the front pair of stacks for the replenishment of shuttle S, and stop IZI being similarly in and out of stopping position at the back of the selector to permit replenishment of shuttle S by bobbins drawn alternately from the rear pair of stacks. It will further be seen that I employ the usual rod 22, a, customary part of the selector 2| to serve as a guide for the stops I00 and I2I. The two control units for the front and back pairs of stacks are similar except for the location of the rods which control the selector stops. Also, it will be seen that the relatively strong spring I30 overpowers the spring I1, but in turn is overpowered by the force derived from the shuttle boxes when the rear stop I2I is in stopping position to register the selector 2I with releaser 32. The selector is therefore moved by two yielding forces one tending to move it forwardly and the other tending to move it rearwardly and these forces accommodate themselves to the conditions set up by the stops I00 and I2I.

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: I

1. Ina weft replenishing loom operating with two shuttles which are alternately active and having control mechanism movable to determine which shuttle shall be active, the loom having a pair of stacks of reserve bobbins for each shuttle and a bobbin releaser for each stack, a releaser selector movable to four positions in each of which said selector registers with one of said releasers, two actuators for the selector both under control of said control mechanism and alternately operative to position said selector, depending upon the position of said control mechanism, one actuator acting to move the selector in one direction toward registry with the releasers of one pair of stacks and the other actuator acting to move the selector in the opposite direction toward registry with the releasers of the other pair of stacks, and means cooperating with each actuator when the latter is operative to cause said selector to register first with one releaser and then with the other releaser of the associated pair of stacks.

2. In a weft replenishing loom operating with two alternately active shuttle boxes each movable by control mechanism to active position and the loom having a pair of stacks of reserve bobbins for each shuttle box, a bobbin releaser for each stack, a selector common to said releasers and movable to four positions to register with said releasers, one at a time, means under control of said control mechanism to move the selector toward registry with th releasers of one pair of stacks when one shuttle box is active, a controller for the selector cooperating with said means and associated with said one pair of stacks causing the selector to register alternately with the releasers of said one pair of stacks for successive operations of the releasers of said one pair of stacks, a second controller for the selector corresponding to the releasers of the other pair of stacks, and other means under control of said control mechanism overpowering the first means when the other shuttle box is active and cooperating with said second controller to cause the selector to register alternately with the releasers of said other pair of stacks for successive operations of the releasers of said other pair of stacks.

3. In a weft replenishing loom operating with two alternately active shuttles controlled by a mechanism to determine which shuttle shall be active, the loom having a pair of stacks of reserve bobbins for each shuttle box, a bobbin releaser for each stack, a selector common to said releasers and movable to'tour positions to register with said releasers, one, at a time, a controller associated with one of said pairs of stacks to determine the position of the selector relatively to the releasers of said one pair of stacks, asecond controller associated with the other pair-of stacks :for determining the position of the selector relatively to the releasers of said other pair of stack-s, means controlled by said control mechanism and cooperating with the first controller to register the selector with one or the other of the releasers of said one pair of stacks depending upon the position of said first controller when one shuttle is active, and other means also controlled by said control mechanism and cooperating with the second controller to register the selector with one or the other of the releasers of said other pair of stacks depending upon the position of said second controller when the other shuttle is active, each controller being operated by the corresponding releasers and caused by successive movements of the latter to cooperate with the associated means and register the selector alternately with the releasers of the corresponding pair of stacks.

a. In a weft replenishing loom operating with a pair of alternately active shuttles and mechanism determining which shuttle shall be active, the loom having a :pair of stacks of reserve bobbins for each shuttle box, a bobbin releaser for each stack, a selector common to the releasers and movable to four positions to register with said releasers, one at a time-two controllers for the selector, one associated with each pair of stacks and each controller operated by the releasers of the corresponding pair of stacks, a o

spring operatively connected to said mechanism and said selector and cooperating with the con troller of one pair of stacks to cause said selector to register alternately with the releasers of said one pair of stacks for successive operations of the releasers of said one pair when one shuttle is active, and a second spring stronger than the first spring operatively connected to said mechanism and said selector and cooperating with the controller of the other pair of stacks to register said selector alternately with the releasers of said other pair of stacks for successive operations of the releasers of said other pair of stacks when the other shuttl is active.

5. In a weft replenishing loom operating with two shuttles and control mechanism to determine which shuttle shall be active and having a pair of stacks of reserve bobbins for each shuttle box, a bobbin releaser for each stack, a selector movable to fourpositions to register with said releasers, one at a time, two resilient means operatively connected to the control mechanism operatively connected to the selector and alternately operative to position said selector, depending upon which shuttle is active, one of said resilient means moving the selector toward registry with the releasers of one pair of stacks and the other resilient means moving the selector toward registry with the releasers of the other pair of stacks, and a controller for each pair of stacks,

each controller cooperating with the associated resilient means to cause alternate operations of the releasers of: the corresponding pair of releasers for successive replenishments of the corresponding shuttle.

6. In a weft replenishing loom operating with two alternately active shuttles and control mechanism to determine which shuttle shall be active, the loom having a pair of stacks of reserve bobbins for each shuttle box, a bobbin releaser for each stack, a releaser selector common to the releasers and movable to four position to register with all the releasers, one at a time, means controlled by said control mechanism to move the selector into register with one of the releasers of one pair of stacks when one shuttle is active, other means also controlled by said. control mechanism to move the selector into register with one releaser of the other pair of-stacks when the other shuttle is active, and a movable selector stop for each pair of stacks which when in stopping position cooperates with the corresponding means to register the selector with the other releaser of the corresponding pair of stacks.

7. In a weft replenishing loom operating with twoalternately active shuttles and control mechanism to determine which shuttle shall be active, the loom having a pair of stacks of reserve bobbins for each shuttle and a bobbin releaser for each stack and-operating with a releaser selector common to the releasers and-movable to four positions to register with all the releasers, one at a time, means controlled by said control mechanism to move the selector into register with one releaser of one pair of stacks when one shuttle is active, other means also controlled by said control mechanism to move the selector into register with one releaser of the other pair of stacks when the other shuttle is active, and a pair of selector stops, one for eachpair of stacks, said one releaser of each pair of stacks operative to move the corresponding stop into stopping position relatively to said selector, each stop when in stopping position cooperating With thecorrespondi-ng means to register the selector with the other releaser of the corresponding pair of stacks.

8. In a weft replenishing loom operating with two alternately active shuttles and control mechanism to determine which shuttle shall be active, the loom having a pair of stacks of reserve bobbins for each shuttle box and a bobbin releaser for each stack and operating with a releaser selector common to the releasers and movable to four positions to register with all the releasers,

one at a time, means under control of said controlmechanism to move the selector into register with one releaser of one pair of stacks when one shuttle is active, other means also under control of said control mechanism to move the selector into re ister with one releaser of the other pair of stacks when the other shuttle is active, a selector stop for each pair of stacks, and a controlling for each stop to effect movement of the latter into stopping position when the selector moves toward the other stop and cooperate with the corresponding means to register the selector with the other releaser of the corresponding pair of stacks.

9. In a weft replenishing loom operating with two alternately active shuttle boxes controlled by mechanism moving to determine which shuttle shall be active, the loom having a pair of stacks of reserve bobbins for each shuttle and a bobbin releaser for each stack and a releaser selector movable along a given path to register with the releasers, one at a time, two means controlled by said control mechanism effective to move said selector along said path in opposite directions, one means for one direction when one shuttle box is active and the other means for the opposite direction when the other shuttle box is active, said mechanism by the position thereof determining which means shall be effective to move said solector, a pair of selector stops, one for each pair of stacks and one at each end of said, path, each stop moving alternately into and out of said path for successive replenishments of the associated shuttle by bobbins drawn from the corresponding pair of stacks and cooperating with the corresponding means to register said selector first with one and then the other releaser of the corresponding pair of stacks.

10. In a bobbin stack selector stop controller unit for a weft replenishing mechanism operating with a stack selector and a pair of bobbin releasers each having an operating dog, said unit comprising a body for attachment to the mechanism and having a lever pivoted on said body for engagement with the dogs of said releasers and connected to the stop.

In a weit replenishing mechanism having two pairs of stacks of reserve bobbins and a bobbin releaser for each stack and operating with a releaser selector movable to four positions in each of which said selector registers with one of said releasers, two stops for the selector, one corresponding to each pair of stacks and each stop moving alternately into stopping and non-stopping position, actuator means for the selector which when moving in one direction moves the selector toward registry with the releasers of one pair of stacks and when moving in the opposite direction moving the selector toward registry with the releasers of the other pair of stacks, said means cooperating with each stop and, depending upon whether the latter is in stopping or nonstopping position, registering the selector with one or the other of the releasers of the corresponding pair of stacks.

12. In a weft replenishing mechanism having two pairs of stacks of reserve bobbins and a bobbin releaser for each stack and operating with a releaser selector movable to four positions in each of which said selector registers with one of said releasers, two stops for the selector, one corresponding to each pair of stacks and each stop moving alternately into stopping and non-stopping position, actuator means for the selector including two springs, said actuator when moving in one direction acting through one spring to move the selector toward registry with the releasers 01 one pair of stacks and when moving in the other direction acting through the other spring to move the selector toward registry with the releasers of the other pair of stacks, each spring cooperating with the corresponding stop and depending upon whether the latter is in stopping or non-stopping position, registering the selector with one or the other of the releasers of the corresponding pair of stacks.

13. A stop to control the registry of a laterally shiftable reserve bobbin stack selector relatively to bobbin stacks in a multi-stack weft replenishing loom by being either in or out of stopping position relatively to the selector, the latter including a shaft and the loom having a controller movable toward and away from the shaft, said stop comprising a rod having a slot at one end thereof to receive the controller and having a head connected to the other end of the rod for movement against the selector when the controller moves in said slot toward the shaft and into stopping position relatively to the selector when the latter shifts away from the head, said head being so made as to straddle the shaft for guidance thereby in said movement.

VICTOR H. JENNINGS.

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