US2162290A - Revoker for weft replenishing loom - Google Patents

Description

' June 13, 1939. R TURNER 2,162,290

REVOKER FOR WEFT REPLENISHING LOOM Filed Feb. 26, 1958 2 Sheets-Sheet l Invenror R \chau'd G.Turne.\"

Attorney June 13, 1939. R G, TURNER 2,162,290

'REVOKER FOR WEFT REPLENISHING LOOM a An;

5i 0 9a 50 9 x9 6 i 72 76 J 75 0 T4 L R 78 v 77 {fl-f}.

Q 7 O H Inventor Rmhag G.Turne\- Q4 1. )g rfi Attorney Patented June 13, 1939 PATENT OFFECE 2,162,290 REVOKER FOR WEFT REPLENISHING LOOM Richard G. Turner, Worcester, Mass, assignor to Crompton & Knowles Loom Works, Worcester, Mass, a corporation of Massachusetts Application February 26, 1938, Serial No. 192,783

9 Claims.

This invention relates to improvements in revoking mechanism for weft replenishing looms and it is the general object of the invention to provide such a mechanism which shall be very i sensitive so that it shall require a very small force only derived from the shuttle for its operation. v

In the usual automatic bobbin changing loom transfer mechanism is set by a weft detector 10 when the weft of the running shuttle is substantially exhausted. The transfer mechanism includes a transferrer arm movable about a fixed center and carrying a movable latch which is normally out of the path of an operating dagger on the lay. When a transfer is called the latch is raised into the path of the dagger so that forward motion of the lay will depress the transferrer arm to effect transfer.

When the shuttle is properly boxed the called transfer will always be completed. Should the shuttle fail to be properly boxed, however, it will not be in proper position to receive the incoming bobbin and under these conditions revoking mechanism recalls the transfer by lowering the latch before it can be engaged by the dagger on the lay. Previous revoking mechanisms have derived practically all of their force required directly from the shuttle, and this force is frequently sufficient to bend the shuttle engaging part of the revoking mechanism in the direction of the length of the shuttle and thereby prevent correct revoking. As a result of this bending the previously known revokers have not always operated satisfactorily and this is due to the fact that too much pressure is required to be transmitted from the shuttle to the revoking mechanism. It is necessary to hold the shuttle feeler forming part of the revoking mechanism in a definite position and this has usually been done by a relatively strong spring which serves not only to. hold the shuttle feeler in position but also retains the latch in the path of the lay dagger.

It is an important object of my present invention to provide a revoking mechanism capable of moving the latch into the path of the lay dagger by a force transmitted through a yieldable connection and thereafter partially break the yielding connection by a positive force derived from operating parts of the loom. Of the total force required to effect a complete breakage of the yielding connection the greater part issupplied by the operating part of the loom independently of the shuttle, and the small remaining part of the force necessary to break the yielding connection completely is derived from the shuttle with little or no tendency to bend the shuttle feeler.

To illustrate -one application of my invention I have shown a system of levers employed in multicolor shuttle changing looms of the type set forth for instance in prior Patent No. 2,054,192. In that system there is a regularly moving lever driven by a cam on the bottom shaft of the loom and carrying a dog normally moving in a path lying on one side of a stationary lever. When transfer is called the dog moves into lifting relation with respect to the stationary lever to raise the latter preparatory to transfer. In the present instance the transferrer latch is connected to the stationary lever and moves upwardly with the latter and into the path of the lay dagger. The stationary lever and latch are attached to each other by a yieldable connection amply strong to lift the latch and rock the revoking mechanism into shuttle feeling position. A stop is provided to limit upward motion of the latch but the cam is so designed as to continue lifting of the normally stationary lever after upward motion of the latch has been arrested. The purpose of this additional upward motion of the stationary lever beyond that required to set the transfer is partially to break the yielding connection and move a stud carried by the stationary lever out of a notch in the connection and place said stud on a flattened area of the connections. sure between the stud and the flattened area is suflicient to hold the latch in set position, but should revocation be necessary the flattened area moves down relatively to the stud with only a slight further opening or breaking of the yield- :2

ing connection and by a small force derived from the shuttle.

In the operation of my invention the yielding connection will be completely broken at every call for transfer, the time required for the breaking when transfer is completed being comparatively long and the latter part of the breaking requiring but little force. When a transfer is revoked, however, this interval of time is shorter but the latter part of the breaking effort will still require a small force only. As shown hereinafter the yieldable connection is acted upon by three separate forces at least two of which are unequal. When the normally stationary lever rises it delivers to the yielding connection sufficient force to lift the latch and place the shuttle feeler in transfer position. The yielding connection must be strong enough to transmit this amount of force. As the lever continues to rise a greater force is applied the effect of which causes the The presinitial stage of breaking of the yielding connection. The force required for this second stage is necessarily larger than the first force. The third force is that required to complete the breaking of the connection or to effect the second stage of the breaking.

During the interval between setting for transfer and revocation or resetting of the feeler the third of the forces described must be slightly greater than that required to support the weight of the parts resting on the yielding connection. In the particular arrangement to be described therefore the first force just described is the weakest, since it need be just strong enough to lift the weight of the parts, the third force is slightly stronger than the first force or may under some conditions be of the same magnitude, while the second force described is the greatest. The significant relationship of the forces, however, as will appear hereinafter, is that the third force shall be comparatively small, being actually that force required to sustain the weight of the parts plus a small additional force to insure maintenance of the parts in their set position for transfer.

The several parts of the invention are capable of different relative settings in all of which, however, it is desirable that the first stage of yielding shall have been completed by the time the tip of the shuttle reaches the shuttle feeler during the forward beat of the lay. If the shuttle is widely misplaced its front wall will strike the shuttle feeler comparatively early in the forward motion of the lay but at such a time the shuttle would be able to transmit a relatively large force to the shuttle feeler. Because of this fact it is possible to set the parts so that the first stage of breaking of the yielding connection will not necessarily be completed when a wide part of the shuttle strikes the shuttle feeler.

With these and other objects in view which 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 an end elevation of a loom having my invention applied thereto, the lay and shuttle being shown in vertical transverse sections and the parts being in their normal position prior to setting for a transfer,

Fig. 2 is a View similar to a portion of Fig. 1 but with the latch and shuttle feeler shown set for transfer,

Fig. 3 is similar to Fig. 2 but shows the operation of the parts during a revoking operation, and

Fig. 4 is a front elevation of parts shown in Fig. 3 with the inner tip of the shuttle shown in position to strike the shuttle feeler and taken in the direction of arrow 4, Fig. 3.

Referring to the drawings, I have shown a loom frame [0 having a lay I I mounted on lay swords l2, connectors l3 and top or crank shaft [4 which has one revolution for each beat or pick of the loom. The lay reciprocates back and forth in the usual manner around the rocker shaft 15.

A shuttle box [6 receives shuttle S and there is projecting forwardly from the lay a transfer dagger I! for engagement with a transferrer latch it! normally down as shown in Fig. 1 below the fixed path in which the dagger moves. A transferrer arm 19 moves about a fixed stud 20 and is pivotally connected to the latch carrier 2i as at 22. By means of the usual spring not shown but surrounding the stud 20, the transferrer arm is held in a raised position shown in Fig. 1, but can be depressed against the action of the spring when the dagger engages the latch on the forward beat of the lay.

The magazine M is shown in the present instance as supplying two distinctive types of reserve bobbins indicated at W and W, respectively. The magazine rocks about a fixed center 23 and is attached by a connector 24 to a lever 25 rockable about a fixed stud 26. The depending rod 21 is also connected to the lever 25 and carries at the lower end a hook 28 which can be moved into or out of the path of the stud 29 on a normally stationary lever 30. The latter rocks about a relatively large fixed stud 3| in the lower part of the loom frame and has a forward arm 32 normally down but raised preparatory to transfer.

A selector mechanism designated at 0 moves in timed relation with the shifting shuttle boxes at the opposite end of the loom not shown herein but well understood, and the selector is connected by a rod 33 to a rocking frame 34 through which the hook 28 extends and by which the hook is guided. When in one position the frame 34 will locate the book as indicated in Fig. 1 for depression by the stud 29 when the stationary lever rocks in a clockwise direction, but when in its other position corresponding to a different setting of the shifting boxes at the other end of the loom, the hook will be moved rearwardly from the position shown in Fig. 1 to be out of the path of the stud 29. In this latter position the magazine M will remain as shown in Fig. 1 with the front reserve weft W under the transferrer arm, but when the hook is under stud 29, rocking of stationary lever will cause rocking the magazine through the connections described to place the rear reserve bobbin W under the transferrer. For a further description of the magazine reference may be had to my co-pending application Serial No. 129,245. It is considered sufiicient for present purposes to state that when the drop shuttle boxes shift the controller C will also shift as well as the hook and the magazine will shift on transferring beats if weft W is called for by the transfer.

The bottom shaft 35 of the loom has secured thereto a track cam 36 which completes a revolution in two beats of the loom. This cam drives a roll 31 on the rear arm of a regularly moving lifting lever 38 pivoted on stud 3| and carrying at its forward end a dog 39. The latter normally clears a shelf 40 on the stationary lever 33, but when a transfer is called the dog is moved to a position under the shelf by one or the other of the setting elements 4| as lever 33 rises. Thereafter as the lever 38 rocks to lift the dog the stationary lever will also be raised to cause upward motion of the forward end 32.

The color selector mechanism C and the parts associated therewith may be substantially as shown in the aforesaid patent, and is controlled by a solenoid 42 connected by wires 43 and 44 to a battery or other source of electric power 45 and an electric feeler 46. The latter is mounted by links 41 pivoted to a stationary part of the loom indicated at 48. The weft detector forms no part of my present invention and may be of any desired form and acts to detect condition of Weft on alternate forward beats of the loom when the shuttle is present on the detecting side of the loom. When substantial exhaustion occurs the solenoid 42 is actuated'and the dog controlled as already described.

The shipper handle 50 is fastened to the shipper rod 5i and is shown in Fig, 1 in the driving position. A stud 52 moving with the shipper handle is positioned for engagement with a hook 53 pivoted at 54 to the transfer latch l8. The relation of the parts just described is such that when the shipper handle is moved to the left or forwardly as shown in Fig. l the latch can be raised because of the distance between the hook 53 and the stud 52, but when the loom is stopped by rocking of the shipper handle in a right hand direction the stud 52 moves down near enough to the hook 53 to prevent the latch from moving into the path of the lay dagger. This part of the mechanism may be similar to that described in my prior Patent No. 2,065,772 and has for its purpose the prevention of operation of the replenishing features when the loom is being turned over by hand.

The parts thus far described, except as mentioned hereinafter, may be as constructed heretofore and of themselves, and except as combined with other parts to be described, form no part of my present invention.

In carrying my present invention into effect I provide a stand 60 held to the loomside by a bolt 6i and having two adjusting screws 62 to engage a surface of the loomside so that the angular position of the bracket may be varied by adjustment ofthe screws 62. The bracket 69 carries a stud 63 on which is mounted a carrier lever 64 having a horn 55 to which is secured the shuttle feeler 66 which I preferably form as a rod having an enlarged rear head 61 for direct engagement with the shuttle S and held in angularly adjusted position on arm 65.

Lever 6 3 has an arm 68 which is pivotally connected as at 69 to a rod head 10 adjustable on the upper end of a setting rod 1!. The lower end of rod ll is adjustably connected to another rod head "12 from which depends a finger 13. This finger has a notch M in the lower end thereof above which is a flattened area 15 leading to a recessed inclined part 16. The bottom of finger i3 is connected by a light tension spring '11 to the lower end of a second finger l8 also connected to the spring Tl and pivoted at its upper end as at 19 to the rod head. The two fingers are'movable a way from each other against the action of spring ll and are normally urged to move toward each other by said spring. A stud ill] mounted on the forward end 32 of lever 30 is designed to cooperate with the two fingers and is normally located in the pocket 14 where it is held when the two fingers are drawn toward each other as set forth in full lines in Fig. 2. The two fingers, spring ll and stud 8 constitute a yielding connection designated generally at Y between lever end 32 and rod H and is an important part of my invention as will be pointed out later.

Extending upwardly from the arm 68 is a latch lifter adjustable vertically in the arm 68 as indicated in Fig. 2 by a check nut 86. The upper end of the latch lifter is curved forwardly and is located under the latch 48 at all times. An adjustable stop screw 81 held in fixed structure as indicated in Fig. 2 may be used to limit upward motion of the latch 18, while a light tension spring 88 connected to the latch and also to a part of the shipper handle tends to assist gravity in lowering the latch.

The arm 64 has a small finger 90 which moves between and is limited by front and back adjustable stopping screws 9i and 92, respectively, carried in the stand 60, thus limiting the motion of the shuttle feeler and latch lifter. A stud 93 on the lay is placed to engage the arm 94 on lever 64 when the latter is in rear position for a resetting purpose to be described.

The cam 36 shown in Fig. 1 has inclines and declines as suggested in that figure for giving the lever arm 32 its vertical motions and the cam is so set that an incline 95 is effective to lift the lever'32 to set the loom for transfer as will be described hereinafter at some time subsequent to the determination at the other end of the loom that a depleted shuttle previously having given an indication of exhaustion is about to be returned to the replenishing side. The incline merges with a dwell 96 which maintains the lever 38 in raised position sufficiently long to permit engagement of the dagger I! with the latch I8. I prefer to keep the rod H in raised position by the cam throughout the entire transferring operation and during resetting of the lever 55 by stud 93 on the lay.

In operation, the parts will be normally in the position shown in Fig. 1, running of the loom effecting a rise of the dog 39 every other beat along a path which clears the shelf 4!]. As the color of weft being woven changes there will be a shift of the rocking frame 34 and the color control mechanism C as already described. I wish it to be understood, however, that although I have illustrated my invention in connection with'a multicolor loom, it is nevertheless applicable to plain or single color magazines such as those used for mixing filling, and my invention is in no way restricted to all of the structure shown in the lower part of Fig. 1 or to the multicolor magazine.

So long as sufficient weft for continued weaving remains in the running shuttle the parts will re main as shown in Fig. 1, but when exhaustion occurs in the active shuttle the weft detector 46 acting through the solenoid 42 will set one or another of the elements 4| in a position to control the dog 39 and at the proper time as described in my prior Patent No. 2,054,174 the dog will be pushed over to a position under the shelf 40. The cam will then lift arm 32 and stud 80 will act through the yieldable connection Y to lift rod H and rock lever 64 about its axis 63. This lever 64 is normally limited in its left hand motion by stop screw 92. As the lever turns in a right hand direction as viewed in Fig. l two important changes take place, first, the latch will be raised from the normally down position of Fig. 1 to the up position shown in Fig. 2, and second, the head 6'! of the shuttle feeler will move from its normal forward position in front of the path of the shuttle as suggested in Fig. 1 to a rear position where it can engage the shuttle S if the latter is misplaced.

When the latch and the shuttle feeler have been moved to transfer position, screw 9! prevents further motion of lever 65, but arm 32 continues to lift stud 8 and cause it to spread fingers l3 and 18 against the action of spring 11. This spreading requires more force than that necessary to rock lever 65. Continued up motion of stud 80 places it above the notch and between the surface !5 and finger 18 as shown in full lines in Fig. 3. These latter parts hold the stud 80 tightly enough to maintain the latch and shuttle feeler in transfer position. The cam 36 is so designed as to arrest upward motion of the stud 80 before the latter reaches the recessed or inclined part 16 of the finger l3, dwell 96 ac- 5 complishing this result. When in the position shown in Fig. 3 very little force is required to produce relative motion between the stud 8!! and the fingers which frictionally engage it.

The conditions indicated in Fig. 3 as just described exist during forward beat of the lay and before the latter reaches a position where the shuttle feeler can determine whether transfer should occur or be revoked. As the lay approaches the temporarily placed shuttle feeler two conditions with respect to the shuttle can exist, either the shuttle is properly placed for transfer, or it is widely enough misplaced to require revocation of transfer.

If the transfer is normal due to proper boxing of the shuttle, forward motion of the lay will cause engagement of the latch by the dagger and the transferrer arm will be depressed to effect transfer. During the latter part of the forward beat of the lay and subsequent to engagement of the latch by the dagger, the stud 93 will engage arm 94 and rock lever 60 to the left from the full to the dotted line or normal position shown in Fig. 3. This depresses rod 'II and moves the two fingers l3 and I8 downwardly so that the stud 80 lies between them and opposite the inclined or recessed portion 16 of the finger 13. In this position the stud 86 is completely disconnected from connection Y. Dwell 96 of the cam holds stud 80 up long enough to permit this disconnecting to occur.

The transfer is now complete and the shuttle feeler has been moved to its foremost position, limited by stop screw 92, and it is still necessary to reset the yielding connection at the lower end of rod H. This is caused by a decline 00 on the cam 36 which permits lowering of the lever end 32 and stud 80 under the action of a relatively heavy tension spring I0! interposed between a fixed part of the loom and the normally stationary lever 30, see Fig. 1. The rod H is prevented from moving downwardly with the stud 80 during resetting by stop screw 92 and as stud 80 descends it again spreads the fingers and then enters the notch 14, whereupon the parts are reset and ready for another operation. Stop screw I02 may be used if desired to hold lever 30 in normal position and relieve those parts of the mechanism above stud 80 from the action of relatively strong spring llll.

If for any reason the shuttle fails to be completely boxed it will be necessary to revoke the transfer. On such a beat of the loom all the operations previously described for setting the mechanism for transfer will take place in their usual manner, the stud 80 being as shown in Fig. 3 when the dagger approaches the latch and there is a normal expectancy of transfer. Due to misplacement of the shuttle, however, some part of the latter such as the point as indicated in Fig. 4 will engage the shuttle feeler head 61 at a time in the cycle of the operations prior to that at which stud 93 would normally engage lever 60. As the lay continues to advance after engagement of the shuttle with the shuttle feeler the latter will move forwardly to rock lever 68 in a counterclockwise direction from the full toward the dotted line position of Fig. 3 and thus lower the latch lifter 85 and permit spring 88 to move the latch l8 downwardly out of the path of the lay dagger IT.

The only force which resists rocking of lever 60 under these conditions is that created by a frictional contact between the stud 80 and the two arms 13 and 18. This is a small force which is derived from the'shuttle and transmitted to the feeler head 61 without damage to the shuttle or likelihood that the feeler will be pushed off the shuttle tip. The surface 15 will ordinarily be substantially parallel to the adjacent surface of finger 18 when the parts are as shown in full lines in Fig. 3. If a slightly greater resisting force is desired the surface 15 can be inclined upwardly and toward the finger 18 to define a wedge to be opened by the stud 80 by relative upward motion of the latter with respect to the fingers.

The connection between stud 80 and rod 'H is again broken completely although the breaking is completed earlier than in the case of a normal transfer. The subsequent resetting will be the same as already described and the parts restored to normal position so that another effort can be made by the loom to replenish the shuttle. The parts 15, 78 and 80 are so proportioned as to remain in the position shown in Fig. 3 immediately subsequent to setting of the magazine for transfer and this relationship of the yielding connection will not be disturbed by spring 88 which is too light to cause relative downward motion of fingers 13 and 18 with respect to the stud 80.

It will be seen therefore that engagement of the shuttle with head 61 serves to prevent transfer by means of a force derived from the shuttle just sufiicient to move the stud 80 from the full to the dotted line position shown in Fig. 3. This force is quite small as compared with similar forces found in previous revoking mechanisms and is the reason why the revoking mechanism described herein is so much more sensitive than those previously used.

From the foregoing it will be seen that I have provided force transmitting mechanism for setting a train of mechanism for transfer including a yieldable connection which breaks the train in two successive stages the first of which requires a considerable force derived from cam 36 and the second part of which requires only a very small force derived from the shuttle. It will also be seen that the breaking of this train is complete whether the transfer be carried out normally or whether it is interrupted by a revocation, the only difference being that the completion of the breaking occurs earlier when a transfer is revoked. It will also be seen that mechanism is provided for resetting the train of mechanism subsequent to a normal or revoking transfer. In actual practice I have found that looms equipped with the form of revoking mechanism set forth hereinbefore will operate satisfactorily to prevent transfer by a very slight misplacement of the shuttle, so slight in fact as to render the previous forms of revoking mechanism ineffective.

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 loom having a lay and operating with a shuttle, means to hold a reserve bobbin for transfer into the shuttle, transfer mechanism to insert the reserve bobbin in the shuttle, a lay engaging latch forming part of the transferring mechanism and normally out of the path of the lay, a shuttle feeler normally out of the path of the shuttle, an actuator having a given motion, a yieldable connection between the actuator and the latch and shuttle feeler yieldable in two stages one of which requires a large force and the other of which requires a small force only, said actuator transmitting a force without yielding of the yielding connection to set the latch and shuttle feeler for transfer during the first part of said given motion, said actuator thereafter continuing to move to effect a first stage of yielding of the yielding connector by the application of a relatively large force, and the shuttle feeler movable by a misplaced shuttle to effect a second stage of yielding of the yielding connection by transmission thereto of a relatively small force to effect movement of the latch away from transfer position.

2. In a weft replenishing loom having a lay and operating with a shuttle, means to hold a reserve bobbin for transfer into the shuttle, transfer mechanism for the reserve bobbin including a latch normally in non-transferring position, a shuttle feeler normally in non-transferring position, positioning mechanism to cause the latch and shuttle feeler to move together toward and away from transfer position, yielding actuating means for the positioning mechanism yieldable in two stages the first of which requires a relatively large force and the second of which re" quires a relatively small force, said yielding actuating means acting to move the positioning mechanism to transfer position without yielding, said yielding connection yielding under the relatively large force subsequent to the setting of the latch and shuttle feeler for transfer, and said yielding connection yielding to the relatively small force by pressure derived from a misplaced shuttle and transmitted through the shuttle feeler to the yielding means to effect movement of the latch away from transfer position.

3. In a weft replenishing loom having a lay and operating with a shuttle, means to hold a reserve bobbin for transfer into the shuttle, transfer mechanism to insert the reserve bobbin in the shuttle, a lay engaging latch forming part of the transfer mechanism and normally out of the path of the lay, a shuttle feeler normally out of the path of the shuttle, setting means to set the latch for engagement with the lay and move the shuttle feeler into the path of the shuttle preparatory to a transferring operation, an actuator for the setting means moving in a given path on transferring beats of the loom, means defining a yieldable connection between the actuator and the setting mechanism, said yieldable connection to yield in two stages the first ofwhich requires a relatively large force derived from the actuator during the first part of the movement of the latter and the second stage requiring relatively small force to be derived from a misplaced shuttle acting through the shuttle feeler, means to cause the first stage of yielding after the latch and shuttle feeler are set for transfer, the shuttle if misplaced transmitting a relatively small force through the shuttle feeler to the yielding connection to cause the second stage of yielding, and means to cause resetting of the yieldable connection to normal condition subsequent to a transferring operation of the loom.

4. In a Weft replenishing loom having a lay and operating with a shuttle, means to hold a reserve bobbin for transfer into the shuttle, transfer mechanism to insert the reserve bobbin in the shuttle, a lay engaging latch forming part of the transferring mechanism and normally out of the path of the lay, a shuttle feeler normally out of the path of the shuttle, setting means to set the latch for engagement with the lay and move the shuttle feeler into the path of the shuttle preparatory to a transferring operation, an actuator for the setting means moving in a given path on transferring beats of the loom, means defining a yieldable connection between the actuator and the setting means, said yieldable connection offering two successive different resistances to yielding the first of which is relatively high and yields to a force derived from the actuator during the first part of the move ment of the latter and the second resistance being relatively small and yielding to a force derived from a misplaced shuttle and transmitted through the shuttle feeler, means to overcome the first resistance after the latch and shuttle feeler are set for transfer, the shuttle if misplaced transmitting a relatively small force through the shuttle feeler to overcome the second resistance, and means to cause resetting of the yieldable connection to normal condition subsequent to a transferring operation of the loom by a force derived from said member.

5. In a weft replenishing loom having a lay and operating with a shuttle, means to hold a reserve bobbin for a transfer into the shuttle, transfer mechanism to insert the reserve bobbin in the shuttle, a lay engaging latch forming part of the transferring mechanism and normally out of the path of the lay, a shuttle feeler normally out of the path of the shuttle, setting means to set the latch and shuttle feeler for transfer, an actuator for the setting means having a given setting motion on transferring beats of the loom to cause the setting means to set the latch for engagement with the lay and move the shuttle feeler to shuttle feeling position preparatory to a transferring operation of the loom during the first part of said given motion, said connections including a yielding device, stop means to arrest motion of the setting means after the latch and shuttle feeler are set for transfer, the latter part of said predetermined motion of the actuator causing the yielding device to yield in two stages, the first of which requires a relatively large force derived from said actuator and the second stage of which requires a relatively small force to be derived from a misplaced shuttle and transmitted through the shuttle feeler and setting means while said actuator is at the end of its predetermined motion, and means to reset the yielding device subsequent to a transferring operation of the loom.

6. In a weft replenishing loom having a lay and operating with a shuttle, means to hold a reserve bobbin for transfer into the shuttle, transfer mechanism to insert the reserve bobbin in the shuttle, a lay engaging latch forming part of the transferring mechanism and normally out of the path of the lay, a shuttle feeler normally out of the path of the shuttle, setting means normally in non-transferring position connected to the latch and shuttle feeler and movable to transfer position to set the latch for engagement with the lay and set the shuttle feeler in engagement with a misplaced shuttle preparatory to a transferring operation of the loom, means to cause the latch to move out of engaging position with respect to the lay when the setting mechanism moves from transferring to non-transferring position, an actuator for the setting means moving in a given path preparatory to a transferring operation of the loom, a yielding connection between the actuator and the setting means, a stop to limit motion of the setting means when the latter reaches transfer position, the actuator continuing to move after the setting means has reached transferring position to cause a first stage of yielding of said yielding connection by a force derived from the actuator, the shuttle feeler when engaged by a misplaced shuttle causing a second stage of yielding by said yielding connection by a force less than that derived from the actuator, and means to reset the yielding connection subsequent to a transferring operation of the loom.

'7. In a weft replenishing loom having a lay and operating with a shuttle, means to hold a reserve bobbin for transfer into the shuttle, transfer mechanism to insert the reserve bobbin in the shuttle, a lay engaging latch forming part of the transferring mechanism and normally out of the path of the lay, a shuttle feeler normally out of the path of the shuttle, setting means normally in non-transferring position and connected to the latch and shuttle feeler and moving the latch to engaging position with the lay and the shuttle feeler in position to engage a misplaced shuttle when said setting mechanism moves from. nontransferring to transferring position, an actuator having a working stroke in one direction and a return stroke in the opposite direction, a yielding connection between the actuator and the setting means to move the latter from nontransferring to transferring position by a force derived from the first part of the working stroke of said actuator, said connection capable of yielding first under a large force only and thereafter yielding under a small force, a stop to prevent further motion of the setting mechanism after the latter reaches transfer position, the latter part of the working stroke of the actuator occurring after the setting means has engaged the stop means to cause an initial yielding of said yielding connection under a relatively high resistance which is overcome by a relatively large force derived from the actuator during the latter part of the working stroke thereof, the shuttle feeler when engaging a misplaced shuttle moving the setting means and latch to non-transferring position against the low resistance of said yielding connection by a relatively small force derived from the shuttle, and a second stop to maintain the setting means in non-transferring position, the actuator on the return stroke thereof cooperating with the second stop after the setting means reaches non-transferring position to establish normal driving connection between the actuator and setting means.

8. In a weft replenishing loom having a lay and operating with a shuttle, means to hold a reserve bobbin for transfer into the shuttle, transfer mechanism to insert the reserve bobbin in the shuttle, a lay engaging latch forming part of the transferring mechanism and normally out of the path of the lay, a shuttle feeler normally out of the path of the shuttle, setting means normally in non-transferring position and connected to the latch and shuttle feeler and movable to transferring position to set the latch for engagement by the lay and set the shuttle feeler for engagement by a misplaced shuttle preparatory to a transferring operation of the loom, means to cause the latch to move out of transferring position when the shuttle feeler moves the setting means from transferring to non-transferring position, stop means to limit motion of the setting means toward transfer position and toward non-transferring position, an actuator having a working stroke in one direction and a return stroke in the opposite direction, and a yieldable connection between the actuator and the setting means, said yieldable connection to yield in two stages the first of which requires a relatively large force and the second of which requires a relatively small force, motion of the first part of the working stroke of the actuator transmitting a force less than said relatively large force through the yielding connection to move the setting means from non-transferring to transferring position, the latter part of the working stroke of said actuator after the setting means has been stopped in transfer position causing the first stage of yielding of said yielding connection, and a misplaced shuttle engaging the shuttle feeler when the latter is set for transfer to transmit a relatively small force through the setting means to return the latter to non-transferring position and effect the second stage of yielding of said yielding connection, the return stroke of said actuator effective subsequent to return of the setting means to non-transferring position to exert said relatively small force on the yielding connection to reestablish normal driving connections between said actuator and the yielding connections. l

9. In a weft replenishing loom having a lay and operating with a shuttle, means to hold a reserve bobbin in position for transfer, transferring mechanism to insert the reserve bobbin into the shuttle, a latch forming part of the transferring mechanism and normally out of the path of the lay and movable into said path to actuate the transferring mechanism, a shuttle feeler normally out of shuttle detecting position, setting means to move with the latch and shuttle feeler and capable of moving the latch and shuttle feeler from non-transferring position to transferring position with the latch in said path of the lay and the shuttle feeler in shuttle detecting position, an actuator having a given motion and actuating the setting means to cause the latter to move the latch and shuttle feeler to transfer position, and a yielding connection between the actuator and setting means, the actuator capable of assuming three positions relatively to the setting means by reason of the yielding of said yielding connection, the actuator during the first part of said given motion thereof moving the setting mechanism to cause the latch and shuttle feeler to move to transfer position without yielding of said yielding connection and while said actuator sustains the first of said positions with respect to the setting means, said yielding connection thereafter yielding under a relatively large force during the latter part of said given motion of the actuator after the latch and shuttle feeler have moved to transfer position to cause the actuator and setting means to assume the second of said positions, the actuator being at the end of said given motion when the parts are in said second position, and the shuttle feeler thereafter effective when engaging a misplaced shuttle to move the setting means by a small force derived from the shuttle relatively to the actuator to said third position and cause the setting means to move the latch out of the path of the lay to prevent transfer.

RICHARD G. TURNER.

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