US1372083A - Feeler-loom - Google Patents

Description

' .Torus Nomnnor, oF'HoPEDALnMAssAcHUsETTs, AssrGNoa To normanna MANUFACTUBING'COMPANY, 0F MILFORD,

T ION 0F MASSAGHUSETTS.

MASSACHUSETTS, A CORPORA- FEELEBfIaOOM.

Specication of Letters Patent.

Patented Mar. 22, 1921.

Application led May 26, 1917. Serial No. 171,128.

To all rwhom it may concern.'

Be it known that I, JoNAs NoRTTTRor, a citizen of the United States, residlng at HopedaleMin the county of Worcester and State of assachusetts, have invented certain new and useful Improvements 1n lFeeler-Looms; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will-enable others skilled in the art to which it appertains to make and use the same.

Thepresent invention, relates to ,an improvement in feeler looms and more particularly the invention relates to an im'- provement in thread extracting devices for such looms.

When the filling in the active shuttle of a feeler loom is exhausted to a predetermined extent, the filling feeler mechanism operates to initiate the weft replenishing operation, and thereupon the bobbin or filling carrier with a certain amount of filling still on it is ejected from the shuttle b the insertion of a filled bobbin therein. nasmuch as the replenishing operation takes place before the filling in the vactive `shuttle is completely exhausted, the filling thread will extend from the shed or selvage to the outgoing bobbin. It is customary to sever this filllng end relatively near the shuttle so that as the critically exhausted bobbin is forced out of the shuttle, it may draw this filling -end after it through the shuttle eye. It sometimes happens, however, that this filling end is caught between the shuttle and the front wall or the binder of the shuttle box, and consequently the bobbin drops to the bottom of its receptacle, leaving the filling end in the Shuttle box and extending through the shuttle eye. In such casesthere is a liabilit of this filling end being drawn into the s ed on the first pick ofthe shuttle after the replenishing operation. The presence of this filling end in the shed is called a double pick and is a blemish in the cloth; and accordingly various devices have heretofore been proposed for eliminating this outgoing filling end, that isto say, for preventing its being drawn into the shed and causing a double pick. Some of these proposed thread. extracting devices have performed their function before the first evacuation of the shuttle box at the replenishing side of the loom after the replenishing operation, and others have performed thelr function after the first evacuatlon of the replenishin shuttle box by the shuttle after the. rep enishing operatlon.

The object of the present invention is to lmprove the construction and organization of feeler loom thread extracting devices of the type which operate to extract the thread from the loom after the shuttle on its first pick away from the replenishing side of the loom after re lenishment has evacuated the shuttle box. o the accomplishment of this obJect and such other objects as shall herelnafter appear, the present invention consists in the improved thread extracting device described in the following specification and particularly pointed out in the appended claims.

The preferred form in which it is contemplated embodying the features of the present inventionis illustrated in the ac companying drawings, in which Figure 1 1s an end elevation of a portion of a feeler loom, showing the application of the improved thread extractlng device of the present invention thereto; Fig. 2 is a front elevation on an enlarged scale of parts of the thread extracting device; Fig. 3 is a section taken on the line 3-3 of Fig. 2; Fig. 4 is a View similar to Fig. 3, showing the parts in a different position of operation; and Fig. 5 is a side elevation ofthe upper end of theA thread hook actuating and resetting member.

The feeler loom to which the thread extracting device of the present invention is applied for the purpose of extracting the outgoing filling end from the shed or from the loom after the evacuation of the replenishing shuttle box by the shuttle on its first pick after the weft'replenishing operation, may be of any usual or'preferred const-ruction. The portion ofthe loom illustrated in the drawings comprises a frame 10, in the lower art of which is pivoted the rock shaft 11 or sustaining the lay swords 12 which support the lay 13, which is oscillated toward and from the breast beam 15. A

change shaft 16 is journaled in brackets se' v the other end of the loom through the hopper army 17 with the weft replenishing mechanism. This 'change shaft 16 and the filling feeler mechanism constitute loom controlling devices. It will be observed that in the event of the application of the present 1nvention toan automatic loom, the replenishing operations of which are initiated on the exhaustion or breakage of the filhng, the change shaft 16 would, in that case, be connected lwith the usual filling detector mechanism, But where a filling feeler mechanism is employed to control the operations of the weft replenishing mechanism, an operation of the latter is effected when the filling feeler mechanism indicates that the filling in the active shuttle has been exhausted to a predetermined extent. Thereupon, an oscillation of the change shaft 16 results, on the following beat-up of the lay, in the insertion of a fresh -supply of filling in "the shuttle. The critically exhausted bobbin having been ejected from the shuttle it falls through the usual aperture 19 in the lay down into the bobbin receptacle or can 20.

If when the shuttle is boxed at the replenishing side of the loom the outgoing filling end, that is to say, that portion of the filling which extends from the selvage to the outgoing bobbin, is not caught between the shuttle and the binder or front wall of the shuttle box, the descending bobbin will pull it through the shuttle eye clear of the loom, the usual thread parter having first operated to sever it relatively near the shuttle, and therefore no double pick can result. If however, this portion of the outgoing filling end should be caught between the shuttle and the binder or the front wall of the shuttle box, then on the first pick of the shuttle awa from the replenishing side of the loom this filling end will be drawn 'into the loom toward the cloth and, most frequently, into the. shed and thereby cause a double pick. The improved thread extracting devlce of the present invention'operates after the outgoing filling end has been drawn into the loom or into the shed by the shuttle, vto pull it therefrom.

The improved thread extracting device is shown in the illustration of its preferred embodiment as comprising a thread hook 22 .which is adapted, at the proper times, to

engage an outgoing filling end which has been drawn into the shed and extract it therefrom before the warp threads close together upon it. This thread hook 22 has on lts upper extremity a thread hook proper or filling engaging part 23. During the normal or regular weaving operation of the loom, the threadv hook 22 is arranged Substantially vertical alongside the filling replenishing end of the. loom. The lower end 24 of the thread hook serves as a pivot pin `outer end of an arm 31 secured to the rock shaft 11. A spring 32, connected with the arm 31 and with the rod 30, acts normally to force the actuator 29 toward the front of the loom, this yielding connection between the arm 31 and the rod 30 being provided so that the actuator 29 may be defiected rearwardly at the proper time, in order to actuate the thread hook. For the purpose of actuating the thread hook to cause it to swing outwardly from the loom, the actuator 29 1s provided with a cam surface 34 which is adapted, on the first backward beat of the lay after replenishment, to come into engagement with a cam projection or lug 35 projecting from a hub 36 rigidly secured to the shaft portion 24 of the thread hook. This lug 35, while the thread hook is in normal position, presses against the uper end 37 of the bracket 27, as shown in ig. 3. The cam surfacev 34 of the actuator 29 is prevented from engaging with the lug 35 durin regular weaving, and for this purpose t e actuator 29 is provided with a laterally flaring part 38 in the under side of which is a groove 39 which is normally in alinement with a downwardly projecting guide finger 40 of an actuator controller member 41 pivoted at 42 on the bracket 27. During regular weaving, the controller 41 is held in the position shown in Fig. 1, so that as the actuator 29 is caused to rise, by reason of the connections between it and the rock shaft 11, on the backward beat of the lay, the groove 39 engages the guide finger 40 and the actuator is thereby caused to rise inoperatively, so that its cam surface 34 passes the lug 35 without engaging it. The actuator controller 41 is adapted to be moved at the proper time to permit the actuator 29 to be deflected so that its cam surface 34 may come into engagement with the lug 35 to actuate the thread hook, and for th1s purpose the controller 41 is connected with an arm 43, secured to the -change shaft 16 and extending rearwardly therefrom, by means of a rod 44 which is pivotally connected at its lower end with the con- .troller and at its upper end is loosely received in a hole in a boss 45 secured to the outer end of the arm 43. A sprin 46, one end of which is secured to the ro 44 and the other end of which is secured to the boss 45, permits relative movement between the arm 43 and the rod 44, for a purpose to be presently described. The oscillatory move- Y ments of the pivoted actuator controller 41 outwardly from the loom; and on the next succeeding backward beat of the lay the actuator 29 operates to return the thread hook to its normal or inoperative position. For this latter purpose the actuator is provided with two cam projections and 51, which are arranged to successively engage, as the actuator rises, with corresponding cam lugs 52 and 53 respectively, secured to the hub 36. v v

The actuator 29 does not moveA the thread hook to the full extent of its outward movement from the loom, nor does it move the thread hook to the full extent of its return or resetting movement toward the loom. The actuator 29 simply initiates the outward movement of the thread hook and the resetting -movement thereof. The outward movement of the thread hook 23 is completed by a spring 54, and the return movement of the thread hook is completed by the same spring. This spring 54 1s secured at its lower end to the bracket 27, and at its upper end to a curved piece 55 which is pivotally connected at its upper end with an arm 56 projecting outwardly from the hub 36. This arm -36 is so arran ed that when the thread hook is in` norma position, the line of pull exerted upon the pivotal connection 57 between the arm 56 and the piece 55 is to the rear of the shaft portion 24 of the thread hook, as shown in Fig. 3, and when the hook has been moved outwardly from the loom, the ull of the spring is on the front side of tde shaft portion 24, as shown in Fig. 4. A stand 59 having a notched end 60 is provided for the purpose of limiting the downward movement of the thread hook.

The operation of the threa-d extractlng device is as follows: While the loom is ,running normally, that is to say, durlng regular Weaving, the thread hook 22 occuples its position alongside the loom frame, as shown in Fig. 1, and -the thread hook actuator 29 -moves constantly upwardly and downwardly, its cam surface 34 being held from engagement with the 1u 35 by the guidefinger -40 of the control er 41. But when the filling feelermechanism indicates that the filling 1n the active shuttle hasbeen exhausted to a predetermined extent, the change shaft 16 is turned in a counterclockwise direction, and the arm 43 is |15 raised. The turning of the change shaft 16 and the conse uent raising of the arm 43 take` place on t e backward beat of the lay, andthe timing of the movements of the various parts is such that before the arm 43 can actuate the controller 41`and swing the guide finger 40 to the left, the actuator 29 has risen, so that the roove 39 engages with the guide finger 40. s the arm 43 rises, the loose connection between it and the rod44 permits it to rise without imparting any motion to the rod 44, the controller 41, therefore, remains in normal position, and the cam surface 34 on the actuator 29 is kept from engagement with the lug 35. By the time the lay has reached its rear center, the shuttle has been picked to the replenishing side of the loom, and' then the lay beats forward on the replenishing beat-up. As

the-lay beats forward, the actuator 29 is dis-v engaged from the guide finger 40, and thereupon the spring 46 acts to lift the rod 44 and oscillate the controller 41, swinging the guide finger 40 to the left; It will be observed at this point that the tension of the spring 46 is so adjusted that during regular weaving it acts as an expansion spring to force the rod 44 downwardly; but when the arm 43 has been raised, the s ring 46 acts as a contraction spring to pullpthe rod 44 upwardly. The position of the actuator 29 and its controller at this time is indicated in dot and dash lines in Fig. 2. The relenishing operation takes place .while the ay is substantially on its front center, and upon the completion of the replenishing operation the lay beats backward. Coincldent with the backward movement of the lay the actuator 29 rises and the cam surface 62 formed on the side of the projection 38 comes into engagement with the corre-4 spondin cam surface 63 formed on the mner si e of the guide finger, so that as the actuator 29 continues to rise, it is deflected to the right into alinement with the lug 35,

as shown in dot and dash lines in Fig. 2,`

the pivotal connection between the ro and the arm 31 permitting this deflecting movement of the actuator.A Then as the acvtuator completes its rising movements, its

cam surface 34 strikes the lug 35 and oscillates the shaft 24 until the outer end of the arm 56 is swung to the front of the shaft 24, and thereupon the spring 54 acts to complete the outward and downward movement of the thread hook.l The movements of the various parts have been described as taking place during the backward beat of the lay after the replenishing operation. It will be observed, however, that the thread hook actuation is not initiated until the llO- lay is substantially on its rear center. The

actuation of the thread hook 'is so timed that the shuttle has had opportunity to evacuate the re lenishing shuttle box before the thread hoo moves outwardly from the ting movement.

loom. Of course if no outgoing filling end was caught between the shuttle and the binder or front wall of the shuttle box, the

thread hook moved outwardly without en-l gaging the filling end, becauselthe latter had been pulled down through the shuttle eye by the bobbin in the usual manner. But if the outgoing filling end was caught in the shuttle' box, t then the outward movement of the thread hook caused itV to be engaged and pulled out ofthe shed and from the loom.

While thelay was beating backward after replenishment, the change shaft 16 and the arm 43 were returning to normal position, but inasmuch as during these movements the controller 41 was held locked by the actuator 29, in the position shown in dot and dash lines in Fig. 2, the arm 43 moved downwardly relatively to the rod 44 without causing an actuation of the latter. The lay now beats forward, and the actuator 29 descends, the spring 32 forcing it outwardly, so that by the time the cam face 62 passes below the cam face 63 on the guide finger 40, the actuator is restored to its normal position with its groove 39 in alinement with the position normally occupied by the guide finger. The disengagement of the cam face 62 from the cam face 63 permits the spring 46, now under compression, to force the rod 44 downwardly, thereby oscillating the controller 41 and restoring the guide finger 40 to its normal position. The actuator 2 9 and its controller 41 are now in normal position, so that-on the next backward beat of the lay, that is to say, the second backward beat of the lay after replenishment, the groove 39 again engages,

the guide finger 40 as the actuator 29 rises. As theactuator 29 rises on this second backward beat of the lay after replenishment, the cam projection 50 first comes into engagement with its corresponding cam lug 52 secured to the shaft 24, and causes the shaft to be oscillated to begin its return or reset- Then as the actuator continues to rise, the cam projection 51 comes into engagement with its corresponding cam lug 53, and the shaft 24 is thereby oscil` lated far enough so that the spring 54 can -complete the resetting of the thread hook.

Having thus described the invention, what is claimed is 1. A thread extracting device for looms having, in combination, a thread hook arranged to swing outwardly from the loom, means for'actnating thethread hook on the first backward beat of the lay after replenishment, and means for resetting the thread hook on the second backward beat of the lay after replenishment. v

2. A thread extracting device for looms having, in combination, a thread hook, a shaft for supporting the thread hook, pro- Lampes jections on the shaft, an actuator connected with the lay rock shaft having parts normally disconnected from but adapted on weft replenishment to coperate with the projections to actuate the thread' hook and to reset it, and a controller connected with the change shaft of the loom for controlling the action of the actuator.

`3. A thread extracting device for looms having, in combination, a thread hook, an oscillatory shaft upon which the thread hook is mounted, and means connected with the lay rock shaft to actuate the oscillatory shaft to impart a thread extracting movement to the thread hook on one backward beat of the lay and to impart a resetting movement to the thread hook on `the next backward beat of the lay.

4. A thread extracting device for looms having, in combination, a thread hook, a shaft on which the thread hook is mounted, an arm -projecting outwardly from the shaft, a spring connected therewith, and

means for actuating the shaft to shift the position of the arm so that the spring may complete the action of moving the threa hook. i

5. A thread extracting device for looms having, in combination, a thread hook mounted to swing outwardly away from the loom, a spring connectedl therewith, and means connected with the lay rock shaft for initiating the outward.' swing. of the thread hook and the resettino' movement of the thread hook, said spring acting to complete the outward swing of the thread hook and the resetting thereof.

6. A thread extracting device for looms having, in combination, a pivotally mounten thread hook, an actuator therefor connected with the lay rock shaft and arranged to have a constant reciprocatory motion during regular weaving, and means to prevent the actuation of the thread hook by thc actuator during regular weavin and to permit the actuation of the threa hook by the actuator on the rst backward beat of the lay following replenishment.

7.- A thread extracting device for looms having, in combination, a thread hook, an oscillatory shaft on which the thread hook is mounted, cam projections on the shaft, an actuator for engaging the cam projections to initiate the thread extracting operation of the thread hook and the resetting thereof, and a spring connected with the shaft to complete the thread extracting operation and the resetting movement of the thread hook.

8. A thread extracting device having, in combination, a thread hook, a shaft on which the thread hook is mounted, cam projections on the shaft, a thread hook actuator having parts coperating with the cam projections on the shaft to actuate the thread 1,s'72,osa l .6.

hook, connections between the'actuator and neetions between the `controller and the the lay rock shaft whereby the actuator is change shaft permitting the thread hook to v caused to have a constant reciprocatory be actuated on the rst backward beat of 10 movement, a controller for preventing the the lay after replenishment and to be reset `5 actuation of the thread hook during reguon the second backward beat of the lay lar weavn and for permitting the actuaafter replenishment. tion thereo on weft replenishment, and con-v JONAS NORTHRQP.

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