US1791853A - Automatically-threading loom shuttle - Google Patents

Description

Feb. 10, 1931. STQNE 1,791,853

AUTOMATICALLY THREADING LOOM SHUTTLE Filed Nov. 9, 1929 2 Sheets-Sheet l //VVENTOFI.

M 4 B'YWA AT TORNE Y Feb. 10, 1931. M. STONE 1,791,853

- AUTOMATICALLY THREADING LOOM SHUTTLE Filed Nov. 9, 1929 2 Sheets-Sheet 2 9 v INl ENTORJ s I I} i I Patented Feb. 10, 1931 UNITED STATES P T MELVIN L. STONE, or PROVID CE, nrronE IsLANn, ASSIGNOR te ants nonrena rrou, or HOPEDALE, MASSACHUSETTS, A conronA'rio'iv or. MAINE AUTOMATIGAILLY-THREADING tooivr SHUTTLE Application filed November This invention relates automatically threading loom shuttles and isvmore parpasses through the shed.

ticularly directed to the thread tensioning means whereby tension is exerted upon the thread during weaving and as the shuttle It is now the ordinary practice to provide automatically threading loom shuttles with thread tensioning means, but in order that the woven cloth shall present no defects, it is essential that the filling thread in the .shuttle shall be equallytensioned throughout the weaving operation including the incoming filling which is sup-plied to the shuttle during replenishment. Should the incoming filling end not be tensioned in accordance Wltll the tension exertedduring' subsequent weaving t-hecloth will present adefect and oneof the objects of the present invention is to provide an automatically threading shuttle with thread tensioning members which may be moved from thread tensioning relation on replenishment of filling and be returned to their relative thread tensioning positions on completion of replenishment so that as the shuttle passes through the shed the new fillingwill be tensioned to the same degree as it is in subsequent weaving.

Filling replenishment looms are usually provided with a transferrer for supplying the shuttle with fresh filling and ejecting the fillingcarrier or bobbin previously in the shuttle, and advantage is taken-of this fact in connection with the present invention by mounting upon the transferrer a controller which, when the transferrer performs its function will cause the thread tensioning .members to be moved in non-tensioning relation and on the return or" the transferrer to idle position, permit the thread tensioning members to move relatively into thread tenisioning position. Thus on replenishment the incoming filling may be operatively related to the tensioning members and on completion of replenishment the tensioning inembers will unerringly act upon the thread to .tension it to the same degree that it is ten- .sioned during subsequent weaving.

In the tensioning devices heretofore ordinarily employed dependence is placed upon '9, 1929. Serial No. 405,327.

the swirling action. of the thread as the shuttle is picked to pass the thread into control of the tensioning members, but in ac cordance with the present invention the in,-

coming filling thread passes into control of the thread tensioning members before the shuttle is picked, and as contributing to, this once operatively related to the tensioning membersbefore the shuttle is moved from the shuttle box.

The invention and novel features thereof will best be made clear from'the following description and accompanying drawings of Fig. l is a perspective view of parts at the replenishing side of the loom and shuttle inthe replenishment box present invention; and i v Fig. 2 is a cross section through the shuttle on the line 22 of Fig. 3; and 1 Fig. 3 is a planview of the" delivery end of the shuttle showing features of the present invention; and v I Fig. 4 is'a similar view to that of Fig; 3 showing the tensioning members .in thread tensioning relation, and p Fig. 5 is a longitudinal section. on the line 5 5 of Fig. 4.

The replenishing shuttle box usual construction through which the'ejected filling carrier or bobbin may pass during reprovided with the endthe thread is positively depress'edon re-V plenishment of filling so that it becomes at 1 maybe of i 1 Q. and associated wlth the replenishing shuttle box is a transterrer 3 which may be of usual construction and op- 7 and frontward of the bobbin chamber the shuttle has at-hreading block 8 whereby the shuttle becom s automatically threaded after replenishment as the shuttle is picked first ing box it will be completely threaded asin one direction and then in the opposite direction; The threading block 8 may be of any of the well known usual types and is secured in the shuttle by the transversely extending bolt 9 which also may be as heretofore employed, the construction being such that the'incoming filling a' will pass into the longitudinal thread passage 10 on the first pick of the shuttle following replenishment .and as the shuttlereturnsto the replenishusual. v V v r a As hereinbefore suggested it is essential that the incoming filling shall be tensioned on the first pick of the shuttle following replenishment and means are Consequently employed to move the thread tensioning members relatively out of the thread tensioning position as the transferrer supplies fresh filling to the shuttle and on completion of replenishment the threaded tensioning members take control of the incoming thread and apply the same tension thereto on the first pick of the shuttle as in subsequent weaving. The tensioning members may be variously contrived in the scope of'thepresent invention but as herein shown the two tensioning members 11 and 12 consist of plate-like elements mounted upon the securing bolt 9 through the medium of spring arms 13 and 1a which extend between the wood of the shuttle as at 15 and the outer side walls of the threading block as more clearly indicated by dotted lines in Figs. 3 and l. The spring arms 13 and 14 preferably extend forward of the bolt 9 which passes through each'of them and thus *afford extended bearings for the-front end portions of sucharms;

The tensioning members 11 and 12 have thread engaging elements 16 'whiclnin the present instance of the invention, extend upwardly from'the tensioning members and 12 so that when the tensioning members'ar'e in thread tensioning position as indicated by Fig/1 the thread engaging elements 16 will cause the thread to take a certain course about the upwardly extending thread engaging elements and thereby impart to the'thread a slip grip friction.

' From the construction thus far described it will be apparentthat the thread tensioning ,members are mounted for yielding movement relatively into and out of thread tensioning position, and normally held in such position and moved to such position by the spring arms 13 and 14; V

The transferrer 3 has .as usual the arm 1'. extending therefrom for thesupport of a bobbin engaging tip 1nember18 so that on replenishment-of filling both the'head and tip portions of bobbin are moved by the transferrer' into the bobbin chamber. I g r In accordance with the present invention the thread tensioning members are to be moved relatively from thread tensioning relat-ion on replenishment of filling and in the present instance of the invention the transferrer has connected thereto a controller which travels with the .transferrer on replenishment of filling to move the tensioning lation to the thread tensioning members that on operative movement of the trans ferrer the controller head willengage por-' tions of the thread tensioning members and move them relatively from thread tensioning position. 7

In order 7 that the controller may have yielding movement in case of obstruction a spring 25 is interposed between the head 24: of the controllerand the bearing 22, as indicat'edinFig. 1 and a pin 26 extends through thebearing22 and a vertical slot 27 formed in the controller to maintainthe head 2& of

the controller in its proper rotative relation with the thread tensioning members. The upper portion 'of the controller may be threaded as at 28 and its downwardmovement under the impulse of the spring 25 may be limited by adjusting nuts 29.

As shown the thread tensioning members are provided with portions 30 which preferably converge downwar-dly in the path of movement of the head 24:.of the controller with the result that as thecontroller moves downwardly with the transferrer it will move the thread tensioning members relatively from their thread tensioning relation.

' The head 24 of the controller is preferably formed as a wedge the sides of which also converge downwardly as indicated at 31 Fig. 2, the result being that as the controller moves downwardly with the transferrer the movement of the thread tensioning members from their thread tensioning position is effected with a somewhat more gradual movement'than would otherwise be the. case.

In filling replenishing looms it is the commonpractice to secure the end of the incom- 'ing filling toa fixed point, sometimes on the hopper or magazine so that as the fresh supply of filling is transferred to the shuttle'the incoming filling a will extend from the fresh filling carrier longitudinally along the thread passage of the shuttle and in most instances will be located between the nontensioning position of the thread tensioning members on replenishment. It is preferable, however, to insure that the incoming that as the controller moves with the trans-' ferrer on replenishment of filling iti will straddle or engage the incoming filling aand by afurther downward movement of the controller will positively carry or depress the incoming filling between the tensioning members, so that upon movement of the controller and transferrer to idle'positi-on and a consequent movement of the-thread tensioning members to thread tensioning position the incoming filling will be placed in control of the tensioning members as indicated in Fig. 4.

In the-present instance of the invention both of the thread tensioningmembers are mounted for movement horizontally from thread tensioning position to open a passageway between the thread engaging element 16 for the incomingfilling thread, and to pre vent the incoming filling thread from'passing downwardly below the thread tensioning members, each of said members is provided with thread supporting fingers 33 disposed opposite to recesses 34: in the companion thread tensioning member, and such fingers and recesses are proportioned such that they provide a support for the incoming filling thread in allpositions of the thread tensioning members.

The thread engaging elements 16, which as hereinbefore stated projected upwardly from the tensioning members 11 and 12 in staggered relation, are preferably provided with in-turned end portions 35, with the result that once the incoming filling hasbeen positioned for the action of the thread engaging elements, and the tensioning members have been moved into tensioning relation, all escape of the filling from between the thread engaging elements is avoided.

When the transferrer is actuated to transfer a fresh supply of filling to the shuttle While the'latter is in the replenishing shuttle box, the controller, which 'IHOVQS with the transferrer separates the thread tensioning members for the'reception of the incoming filling between the thread engaging elements, and the thread depressor acts todepress the thread and insure that it shallberelated to the thread tensionin'g -members such that when the controller moves to its idle position with the transferrer the incoming thread will be subjected to tension as the shuttlel is picked and passes through the shed and such tension will remain the same during subse- I quent weaving.

' What is claimed is; e 1. An automatically threading loom shuttle having a bobbin chamber and side delivery movement into and out of thread'tensioning relation, 'a transferrer for supplyingwthe shuttle with fresh filling thread, means carried by the transferrer for moving the ten- 7 sioning members relatively from'threadten- .sioningrelation by downward movement of the transferrer duringreplenishment of fillng, and permitting return of the. tensioning eye, thread tensioning members mountedrfor members relatively to thread tensioning relation' as" the transferrer moves to idle position that the" incoining filling maybe tensioned as the shuttle-passes through the shed 'on the first pick ofthe shuttle following replenishment of filling; I

'2. An automatically threading loom shuttle having a bobbin chamber and side'delivery eye, thread tensioning members mounted for movenientinto and out of thread 'tensioning relation, a transferrer for supplying the shutto the 'tr'ai sferrer for moving thetension'ing members relatively from thread tensioning relation during replenishment of filling, a

thread positionerpfor moving the incoming filling'thread into position for the action of tle with fresh filling thread, means connected thetensioning members,- and permitting rev turn of the tensioningme nbers relatively to thread tensioning relation as the transferrer and said connectedmeans move to their idle i may be tension'ed on the first pick of the shuttle folposition that the incoming-filling lowing'replenishment of filling.

3. An automatically threading loom shuttle having a bobbin chamber and side delivery eye, thread tensioning members between the bobbin chamber and side delivery eye for applying tension to the thread as the shuttle passes through the shed, a ti'ansferrer for supplying the shuttle with fresh filling thread, a controller mounted on the trans- -ferrer for moving the tensioning members relatively-from thread tensioning relation by the downward movement of the transferrer that the incoming filling thread may be laid in operative relation with the tensioning members, and permitting return of the tensioniiig members to tensioning position as the controller moves separately with the trans ferrer to idle position that theincoming filling may be tensioned as the shuttle passes through the shed on the first pick following replenishment of filling. I

4. An automatically threading loom shuttle having a bobbin chamber; and side delivery eye, threadtensioning members between the applying tension to the thread as the shuttle passes through the shed,- a transferrer for bobbin chamber and side delivery eye for 1 supplying the: shuttle with fresh filling thread, an. arm extending from the transferrer towards the outer end of the shuttle box, a controller mounted on the arm for moving the tensioning members relatively from thread tensioning relation as the transferrer replenishes the filling that the incoming filling thread may belaid in operative relation with the tensioning members and permitting return of the tensioning members to tensioning relation as the controller moves upwardly to idle position, and means for engaging anddepressing the incoming fillinginto operative relation with the tensioning members while the tensioning members are in nontensioning relation.

5. An automatically threading loom shuttle having thread tensioning members to apply tension on the thread as the shuttle passes through the shed, a transferrer for supply-' tion with the transferrer that the incomingthread may be engaged by the tensioning members. 7

, 6. An automatically threading loom shuttle having thread tensioning members, a transferrer for supplying the shuttle with fresh filling, a controller mounted on the transferrer for downward movementtherewith to move the tensioning members from thread tensioning relation as the transferrer supplies the shuttle with fresh filling, and permitting return of the tensioning members to thread tensioning relation as the controller moves to idle position and a thread depressor carried by the controller for depressing the incoming filling into operative relation with the tensioning members.

7. An automatically threading loom shuttle having thread tensioning members mounted for movement relatively into and out of thread tensionin relation, a transferrer for supplying the snnttle with fresh filling, a controller mounted on the transferrer and having a part that enters between the tensioning members to separate them as the transferrer replenishes the filling that the incoming thread may pass between the separated tensioning members, and permitting the tensioning members to move into thread tensioning relation as the controller is withdrawn from between the tensioning members on completion of replenishment of filling.

8. An automatically threading loom shuttle having thread tensioning members mounted for movement relatively into and out of may pass between the separated tensioning members, and permitting return of the tensioning members into thread tensioning relation as the controller is withdrawn from between the tensioning members on completion of replenishment of filling.

An automatically threading loom shuttle having thread tensioning members mounted for movement into and out of thread tensioning relation, a transferrer, a controller connected for movement with the transferrer and having a wedge portion to, separate the tensioning members asthe transferrer replenishes the filling and provided with a thread depressor to depress the incoming filling thread between the separated tensioning members, and permitting return, of the tensionin members into thread tensioning relation as the wedge is withdrawn from be tween the tensioning members.

' 10. An automatically threading loom shuttle having cooperating thread tensioning members relatively movable in. a substantially horizontal plane into and out ofthread tensioning position, a transferrer, a con troller mounted on the transfer rer for relatively moving the tensioning members into non-tensioning relation as the transferrer replenishes the filling and having a thread de pressorto push the incoming filling into cooperating relation. with the non-tensioning positioned tensioning members, and permitting return of the tensioning members into tensioning position upon the incoming filling thread when the controller is moved upwardly with the transferrer that the incoming filling may be tensioned as the shuttle passes through the shed on the first pick of the shuttle following replenishment;

11. An automatically threading loom shuttle having thread tensioning members provided with thread engaging elements and mounted for relative movement into and out of thread tensioning position, thread. supporting fingers extending from the tensioning members in overlapping horizontal relation adapted to support the thread in all relative positions of the tensioning members, a transferrer, a controller connected for clownward movement with the transfer-reifor moving the tensioning members relatively from thread tensioning relation on replenishment of filling and. permit the incoming thread to pass into operative relation with the thread engaging elements, and permitting return of the tensioning members into thread tensioning position on the incoming thread as the controller again moves upwardly to idle position that the incoming thread may be tensioned as the shuttle passes through the shed on the first pick of the shuttle following replenishment. I v

12. An automatically threading loom shuttle having thread tensioning members mounted for movement into and out of thread-tensioning relation, a transferrer, a controller. connected for movement with the transferrer to effect relative movement ofthe tensioning members .into non-tensioning position on replenishment of filling and permitting relative V movement of the tensioning members into thread tensioning relation on completion of filling replenishment that the incoming fillmg may be tensioned as the shuttle passes through the sheclon the first pick following replenishment, and 'an incoming thread depressor for placing the incoming thread in operative relation with the tensioning mem here when they are in non-tensioning position.

In'testimony whereof I have signed my name to this specification.

MELVIN L. STONE.

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