US2000967A - Loom shuttle structure - Google Patents

Description

W y 1T3 WE. LUNDGREN 2,000,967

LOOM SHUTTLE STRUCTURE Filed April '7, 1935 3 Sheets-Sheet l A TTORNE Y.

y 1935 w. E. LUNDGREN ZMWUEW LOOM SHUTTLE STRUCTURE Filed April '7, 1933. 5 Sheets-Sheet 2 ATTORNEY. I

May W. E. LUNDGREN 2,@@,7

LOOM SHUTTLE STRUCTURE Filed April 7, 1933 s Sheets-Sheet 3 I r' f ATTORNEY.

' Patented May '14, 1935 UNITED STATES PATENT OFFICE LOOM SHUTTLE STRUCTURE William E. Lundgren, Auburn, Mass, assignor, by mesne assignments, of one-half to Sutton Tool 00., Inc., Wilkinsonville, Mass, a corporation of Massachusetts Application April 7, 1933, Serial No. 664,854

28 Claims. (Cl. 139207) This invention relates to an improved loom cured until at least the second pick after transshuttle structure of the type employed in weft fer. The present invention, by providing atransreplenishing looms, and more particularly to ferable tension, insures a constant and uniform the provision of improved means for tensioning tension for the weft thread at all times, which the weft thread in order to avoid defects and is not only positive in its operation but is fully 5 imperfections in the woven fabric. effective on the first pick after transfer.

Automatic looms may be divided into two gen- One object of the invention is the p ovision of oral classes, namely, shuttle changing looms a 100m S u e 0f t yp e p in replenishin which a shuttle is removed and anoth subing looms having transferrable bobbin and thread stituted within the 100m when the cop is practensioning members supported within the shut- 10 tically exh usted, d bgbbin changing looms tle in such a manner as to permit automatic inor replenishing looms in whi h a transfer of bsertion of said members within the shuttle or s is effected in the operating shuttle for h ejection therefrom substantially simultaneously. change of filling. In the use of shuttle changing h r je f h inv nti n is th p 13 looms a great number of complete shuttles are Vision Of an v d 100m Shuttle Structure 15 required, and the mechanism for controlling and comprising a transferrable bobbin and tension exchanging the shuttle is complicated d (1111- member cooperatively mounted withinthe shuttle bersome, besides requiring careful and exact body f transf r t r fr m the shu and s0 sizing of the shuttles. The bobbin changing or P i ned an arr n ha he n i nin l nishing looms possess many advantages over means is constantly effective when the transfer- 0 the shuttle changing looms, such as th t they rable bobbin is mounted within the shuttle for require a simpler and less expensive operating imparting a Substantially Uniform tension to the mechanism besides dispensing with the necessity threadfor providing a plurality of shuttles, but have A further Object o the invention is the P been open to the objection, especially in weaving vision of a loom shuttle of the character de- 5 silk, rayon and light cotton fabrics, that no pracs d p vid d wit ld means located dtical means has heretofore been devised for proja t pp d of the Shuttle y for viding a constant and uniform tension on the ceiving and retaining a transferrable bobbin and thread such as would be effective to tension the tensioning mem sp t ve y f m eith r side thread immediately after the transfer of a f the 0 bobbin. Another object 'of the invention is the pro- While various means have been suggested for vision of a tensioning means of the character detensioning the weft thread in such a manner as c bed which i ap of use With y to render the tension effective immediately after plenishing bobbins regardless of size or length,

the transfer of the bobbin, none of the proposed and whichis positively threaded before it goes 35 means have been entirely successful for the purinto the shuttle, thus definitely avoiding the use pose, particularly in connection with the weavof filling mils-thread mechanisms for u n ing of silk, rayon and like materials requiring a automatic threading after transfer. constant and uniform tension characterized by A further object of the invention is the procertainty of operation and effective immediately vision of a tensioning means which may be used after transfer. One reason for suchfailure maybe interchangeably with either right or left handed due to thefact that such tensioning means as have shuttles carrying regular or reverse wound fillbeen suggested for the purpose have been usually ings, and which eliminates drawn in ends, such incorporated in the shuttle, thus necessitating the as at present may be drawn into the open shed positioning of the thread end in the tension or left in the shuttle eye to cause imperfections means after transfer and requiring considerable in the weave or interfere with the new thread.

travel of the shuttle after transfer and before the Another object of the invention is the protension would become fully effective, resulting in vision of. an improved form of transferrable tenimperfections of greater or less degree in the sion means for use in replenishing looms in comweave after each transfer. In general, devices bination with a replenishable bobbin of the conof this character require that the shuttle travel ventional type wherein the tension means may a sufficient distance after transfer to bring about be employed without change in or modification a change in the direction of travel of the shuttle of the cooperating interengaging portions of the in order to thread properly, or in other words, ordinary replenishing bobbin and shuttle strucsuitable and appropriate tension cannot be setures.

A further object of the invention is the provision of a simple and eflicient form of tension means adapted for use with replenishable bobbins of the conventional type and capable of application thereto or employment therewith without interference with the use of the bobbins alone in shuttles provided with the usual built in tension means as well as without requiring any modification of the usual methods and means employed for winding the weft thread upon the spindles of the replenishable bobbins.

Another object of the invention is the provison of a loom shuttle of the type employed in replenishing looms of a transferrable bobbin automatically insertible within or ejectible from the shuttle and a novel tensioning means operatively associated with said transferrable bobbin when in its operative position within the shuttle body.

Other objects and advantages of the invention relate to various improved details of construction and novel arrangements of the parts as will be more fully set forth in the detailed description to follow.

Referring to the drawings:-

Fig. l is a top plan view of a loom shuttle of the type employed in replenishing looms illustrating one form of bobbin and one form of tension means in cooperative relation within the shuttle,

Fig. 2 is a perspective view, partially in section, showing the construction and arrangement of the operating parts of the tension member when the parts are in their thread tensioning positions,

Fig. 3 is a perspective view of the supporting shaft and thread tensioning means carried thereby,

Fig. 4 is a longitudinal sectional view through the tension member illustrating the positions of the tensioning elements as a thread is about to be drawn therethrough,

Fig. 5 is a side elevational view of the tension member and holder,

Fig. 6 is a transverse sectional view through the tension member and holder, illustrating in full lines the tensioning elements in their thread receiving positions, and showing in dotted lines the tensioning positions of the tensioning elements,

Fig. '7 is a top plan view of a loom shuttle of the character described, illustrating a modified form and arrangement of transferrable bobbin and tension member when mounted within the shuttle,

Fig. 8 is a plan view, partially in section, showing the transferrable bobbin and tension member illustrated in Fig. 7, together with the manner of supporting the tension member from the transferrable bobbin,

Fig. 9 is a transverse sectional view, illustrating parts of the tension member, and taken substantially along the line 99 of Fig. 8, and,

Fig. '10 is a transverse sectional view, taken substantially along the line ll0 of Fig. '7.

In the embodiment of the invention illustrated in Fig. 1 of the drawings there is shown an automatic 100m shuttle I of the weft replenishing type provided with a pair of yielding holding jaws 2 and 3 located adjacent opposite ends of the shuttle body and each provided upon its inner face with a series of grooves or notches 4 adapted to receive ribs carried by the base of the bobbin or by the tension member respectively for supporting the bobbin and tension member in cooperative relation with each other within the shuttle body in such a manner as to permit the automatic insertion of the bobbin and tension member within the shuttle or the automatic ejection of these members therefrom. A transferrable bobbin 5 is mounted within the shuttle body and provided with a base 6 having a plurality of circumferential ribs I formed thereon for engagement with the recesses 4 formed in cooperating jaw members 2. A bobbin spindle 8 is carried by the base 6 for the reception of the weft thread 9 after the usual manner. A thread tension member I0 is provided which comprises a casing II, which in the present instance is of substantially cylindrical form, and is provided with a plurality of external ribs I2 corresponding to the circumferential ribs 1 carried by the base 6 of the bobbin and similarly adapted to engage the recesses 4 formed in cooperating jaw members 3.

The casing ll of the thread tension member ID is provided with an end wall l3, which may be formed integral with or secured to the main portion of the casing, and which is provided with a thread opening 14 located substantially centrally thereof. The opposite end of the casing may be internally threaded, as indicated at l5, for receiving and holding an exteriorly threaded end plate 16 provided with a thread opening I1 located substantially centrally thereof and preferably in axial alinement with the thread opening l4 when the parts are in assembled position.

The end wall I 3 of the casing, as well as the end plate I6 are preferably provided with two or more openings I 8 radially positioned with reference to the axis of the casing and which may be spaced from each other circumferentially of the casing axis, and which serve to prevent the accumulation of lint, flight or fine dust within the casing and its deposit upon and interference'with the operation of the tensioning elements located within the casing. An arcuate opening 19 is provided in the main wall of the casing, which may be located substantially midway between the end walls, and which affords access to the tensioning elements to position them for receiving the thread. A shaft 20 is provided with an exteriorly threaded end portion 21 adapted to be received within an internally threaded opening formed in the end plate I6 of the casing. The shaft 20 serves to support a pair of tensioning elements 22 and 23, each of which comprises a sleevelike portion 24 slidably and rotatably positioned upon the shaft 20 and having arms 25 and 26 extending outwardly therefrom, substantially radially thereof, and each terminating in a thread carrying loop 21. The tensioning elements 22 and 23 may be maintained in spaced relationship with each other on the shaft 20 and held under tension by means of a spiral spring 28 carried by the shaft 20 and located between the tensioning elements, the spring being provided with free end portions 29 each engaging the radial arm 25 of one tensioning element to normally maintain the arms of one tensioning element angularly displaced from the arms of the other tensioning element with reference to the shaft 20 as an axis. The arms 25 of the tensioning elements which are engaged by the free ends of the spring 28 are each bent, as at 3|], to offset its thread carrying loop 21 in a direction parallel with the axis of the shaft 20 sufficiently so that the loop 21 carried by each arm 25 will move in'a plane located intermediate the planes of movement of the loops 21 carried by the arms of the other tensioning element as the tensioning elements are turned on the shaft 20. A spacing collar 3| is mounted upon the inner end of the shaft 2|] and serves to space the tensioning element 23 from the end wall l3 of the casing.

In assembling the parts of the tension member ill, the threaded end portion 2i of the shaft 2% is partially threaded within the internally threaded opening formed in the end plate Hi. The tensioning elements22 and 23, together with the spiral spring 28 and spacing collar 3|, are positioned upon the shaft 20 after the manner shown in Fig. 3 of the drawings. The end plate i6 is then turned within the internally threaded end iii of the casing until it occupies substantially a position shown in Fig. 2 of the drawings, and the shaft 20 is located adjacent to and substantially midway of the arcuate opening H9. The shaft 20 is then further threaded within the opening in the end plate It until its inner end is forced against the inner face of the end wall I3 sufficiently to bind the end plate i6 against movement.

In that form of the invention illustrated in Fig. 1 of the drawings, the weft end 9 carried by the bobbin is passed through the loops 21 carried by the radial arms 25 and 26 prior to the transfer of the bobbin, and the bobbin and tension member III are inserted within and ejected from the shuttle simultaneously. The method of and means for threading the weft end into the tension member are more particularly shown in Figs. 4 to 6 of the drawings.

A holder member 33 may be secured to any suitable portion of the frame 34 of a loom by means of a screw or other suitable fastening means 85 so that the holder member may be conveniently located for the attendant to thread the weft end 9 of the bobbin through the tension member before depositing the bobbin and its associated tension member in one of the loom magazine sections for transfer to a shuttle. The holder member 33 is provided with oppositely positioned curved arms 36 which are of suitable size and shape to adapt them to receive and support a tension member ID after the manner shown in Figs. 5 and 6 of the drawings.

A pair of oppositely positioned pressure plates 311 are carried by the holder and located between the curved arms 36, being so arranged as to be adapted to enter the arcuate opening H! in the tension member upon opposite sides of the shaft and engage the adjacent arms of the tensioning element 22 and 23 to rotate the tensioning elements on the shaft 20 so as to bring all of the loops 2! into alinement with each other.

and with the alined'openings l4 and I1 formed in the ends of the casing, as shown in Figs. 4 to 6 of the drawings. A threader member 38 having a hook 39 at one ,end thereof may be passed through the alined openings [4 and I1 and the several loops 21 to draw the weft end into threaded relation with the loops of the tensioning elements.

Upon the removal of the tension member ID from the holder after the completion of the threading operation the arms 25 are released by withdrawal of the pressure plates 31 and resume their normal position, as indicated in dotted lines on Fig. 6 of the drawings. The bobbin and its associated tension member are then in readiness for insertion into an appropriate magazine section or rotary carrier for transfer to the shuttle with the weft end carried by the bobbin subject to immediate and positive tension by the tension member upon transfer of the bobbin and tension member to the shuttle.

In the form of loom shuttle shown in Fig. 1

of the drawings, the provision of yielding jaws 2 and 3 located adjacent to opposite ends of the shuttle results in the provision of a double ended shuttle wherein the tension member ill and bobbin 5 may be interchangeably supported in either end of the shuttle in such a manner to permit their automatic insertion within or ejection therefrom. This interchangeable feature of the shuttle structure, by providing means for reversibly positioning the bobbin and tension member in operative relation with each other within the shuttle, permits the transfer of the bobbin and shuttle being effected upon either side of the loom, selectively or in combination, as may be desired.

It will be seen that the tension member W, as shown in Figs. 1 to 6 of the drawings, is not only adapted for transfer but also provides a positive tensionupon the thread at all times which is not dependent upon any condition of transfer to be rendered effective. While the tension member H] has been shown as having a casing of cylindrical form as being well adapted for the purpose it will be understood that the casing may be given any one of a variety of shapes which may be found desirable in use, and that, if desired, both end walls of the casing'may be removably secured thereto in any suitable or desired manner to facilitate assembling of the parts or provide access thereto for threading the loops or for making adjustments of the parts. It will be apparent that the improved tension member eliminates the use of the usual shuttle eye entirely and is much more readily positioned within a shuttle or removed therefrom than the usual shuttle eye, besides being capable of automatic transfer with the bobbin.

In that form of the invention shown in Figs. 7 to 10 of the drawings, a weft replenishing loom shuttle 40 is provided adjacent to one end thereof with yielding jaw members 4|, each having the interior surface thereof provided with recesses 42 for receiving circular ribs 43 carried by the base portion 44 of a bobbin 45. The shuttle 40 is also provided with a heel plate 46 as is usual in devices of this character. A cylindrical shell or cage 41 is provided at one end with split resilient portions 48 having grooves 49 arranged therein and adapted to receive portions of a rib 50 carried by the base 44 of the bobbin for releasably holding the cylindrical shell firmly in position upon the bobbin. shell 41 may have portions thereof cut away to permit access to the spindle portion of the bobbin by any form of feeler mechanism or may be formed of any desired skeleton construction throughout the major portion of its extent. A tension member 5| is mounted within that end portion of the cylindrical shell 4'! most remote from the base 44 of the bobbin and comprises end walls 52 provided with centrally positioned alined thread openings 53 and an internal recess 54. Tensioning elements, similar to those previously described, and their cooperating parts The cylindrical are suitably mounted upon a shaft 55 located within the recess 54 to tension the thread 56 after a manner similar to that shown in Figs.

2 and 3 of the drawings, the tension elements being accessible for the purpose of passing the thread end 56 through the loops thereof by means of an opening 51 formed in the wall of the cylindrical shell 47.

In this form of the invention the bobbin and tension member are so connected as to form in effect a single unitary structure for the purposes of transfer, that is, the bobbin is adapted for insertion within or ejection from the shuttle after the manner usually employed in replenishing loom structures, and carries with it at all times in constantly effective cooperative association the tension means or member 5|. The weft thread 56 carried by the bobbin may be threaded within the tension means or member 5| after a manner similar to that shown in Figs. 4 to 6 inclusive, and this may be accomplished at the same time that the cylindrical shell 41 is attached to the bobbin.

In this form of the invention it will be understood that various means may be employed for connecting the tension member 5| with the bobbin 45, and that any suitable and desired means may be employed for this purpose without departing from the spirit and intent of the present invention, it being necessary only that the tension member be releasably secured to the bobbin so as to occupy such position as to maintain a proper operative relation with the bobbin and be capable of transfer therewith by insertion within or ejection from a shuttle body.

In the provision of means for tensioning the weft thread as it comes from the shuttle it is desirable that the thread be supplied under a substantially uniform tension at all times regardless of the speed of travel of the shuttle. The mode of propelling shuttles in looms is such as to cause some variation in the speed of travel, that is, the sudden and violent impulse applied to the shuttle tends to produce a quick movement of the shuttle in starting and the speed of the shuttle is abruptly decreased upon reaching the opposite side of the loom. It is accordingly desirable to produce a tension means capable of varying the tension applied to the thread in such a manner that these variations will conform with the changes in shuttle speed.

It will be seen that the tension mechanism shown herein is capable of effecting a variation in the applied tension which changes substantially with the speed of the shuttle in such a manner that the ultimate tension upon the thread as delivered from the shuttle may be substantially uniform. This is accomplished by means of the tensioning elements 22 and 23, which under the influence of the spring 28 are resiliently held in such position that the arms 25 and 26 of the tensioning element 22 may be located at a relatively wide angle with respect to the arms 25 and 26 carried by the tensioning element 23, while the position of the thread within the hooks 21 is such that a pull upon the thread tends to 'decrease the angle of divergence of these arms. As the speed of the shuttle suddenly increases the drag of the thread upon the loops 2'! tends to draw the arms 25 and 26 of the tensioning element 22 and'the arms 25 and 26 of the tensioning element 23 more closely together angularly of their supporting shaft, and thus bring the loops 2'! carried by these arms more nearly into alinement with each other. As the loops 2'! are brought'more nearly into alinement with each other the drag exerted upon the thread by the friction of the loops diminishes. On the other hand, when the speed of the shuttle decreases, the spring 28 tends to move the tensioning elements 22 and 23 in opposite directions, thus increasing the divergence of the arms 25 and 26 carried thereby and increasing the drag upon or tension applied to the thread. This results in effecting an increase of the tension applied to the thread upon a decrease in the speed of the shuttle, and a corresponding decrease in tension upon an increase in the shuttle speed. By employing a spring 28 of suitable strength, the increase and decrease of the applied tension may be so adjusted that the ultimate tension on the delivered thread will be substantially uniform regardless of the speed of travel of the shuttle. This feature insures a greater uniformity in the formed fabric and an improved quality in the weave. The provision of the tensioning arms 25 and 26 also serves to provide a slight take up of the thread when the shuttle stops at the end of each throw, which helps to neutralize the effect of tight thread caused by the rebound of i a shuttle.

In the use of replenishing looms as operated at the present time, the right hand threaded bobbins and left hand threaded bobbins for regular and reverse wound fillings require right and left handed shuttle eyes respectively. The form of tension means shown herein is capable of use interchangeably and without modification with either right or left hand threaded bobbins carrying regular or reverse wound filling and is equally effective for its purpose in either case, as well as being capable of use with any form of transferrable bobbins regardless of their size or length within the limits required by the shuttle' opening. a

In each form of the invention the improved tension means, being positively threaded before insertion into the shuttle body, avoids the necessity for using filling mis-thread mechanisms for the purpose of insuring automatic threading after transfer, eliminates drawn in ends such as may be drawn into the open shed or deposited in the shuttle eye to cause imperfections in the fabric or interfere with the passage of thread through the shuttle eye since the tension member is ejected with the used bobbin, and insures a proper and uniform tensioning of the weft thread on the first pick after transfer.

It will be readily understood that the combination of a replenishable bobbinwith an associated transferrable tension means of the type shown and described provides a combination capable of use without material change in or modification of existing bobbin and shuttle structures. In each form of the invention the interengaging portions of the bobbins and shuttles remain unchanged and cooperate in the usual manner for supporting the bobbins in thread delivery position and to permit their transfer in a replenishing operation.

In each form of the invention as shown herein only one type of shuttle is required for right or left wound bobbins, and each form of my invention allows the insertion of the replenishable bobbin with its delivery end towards the cloth at the time of transfer to prevent drawn in" ends whenever such operation is deemed desirable.

It will be noted that the invention involves the use of a replenishable bobbin in each of the embodiments shown and described, upon which the weft thread is wound directly for either right or left hand delivery, and the base of the replenishable bobbin is provided with means for detachable engagement with the usual or any suitable type of releasable holding means carried by the shuttle, when the base of the replenishable bobbin is inserted therein, such as the resilient holding jaws carried by the shuttle shown 1 2,000,967 in the drawings. In that form of the invention wherein the tension member is carried by the replenishable bobbin it is .detachably secured thereto outwardly of the ribs 43 in such a manner as not to interfere with the transfer of the bobbin or the engagementof the ribs with or their disengagement from the resilient jaws. This form of the inventionis such also as to permit the removal and replacement of the tension holding member 41 so that the weft thread may be wound on the bobbin spindle in the usual manner.

In view of the above it will be understood that the invention contemplates the use of a replenishable bobbin of a type capable of being held within a shuttle body through engagement of the bobbin base with suitable holding means carried by the shuttle body of such a character as to allow automatic insertion or ejection of the bobbin itself into or out of the holding means. It is to be understood therefore, that whenever the term replenishable bobbin is employed in the specification and claims it is used to designate a bobbin structure having apart thereof directly engageable with holding means carried by the shuttle to permit automatic transfer of the bobbin to and from the shuttle through the direct insertion or ejection of the engageable part of the bobbin with the holding means of the shuttle, and a bobbin structure having a spindle portion upon which the weft thread is wound directly;

It will be seen that my improved tension member is capable of ready application to the usual replenishing loom shuttle by the provision of suitable gripping jaws or holding means in the shuttle, or in that form of the invention shown in Figs. '7 to 10, by merely removing or eliminating the shuttle eye, and when employed it not only pos-. sesses the various advantages set forth over the constructions now in use, but is capable of producing all of the operations now carried out in automatic looms.

While I have shown and described resilient holding jaws of a conventional type located adjacent to opposite ends of the shuttle body for releasably holding the transferrable bobbin and tension device in that form of the invention shown in Figs. 1 to 6, inclusive, and similar holding jaws located adjacent to one end of the shuttle body for releasably supporting a combined transferrable bobbin and tension-device of the character shown in Figs. '7 to 10 of the drawings, it is to be understood that any suitable or desired means other than the resilient holding jaws shown and described may be employed for supporting the transferrable bobbin or tension device or the combined transferrable bobbin and tension device without departing from the spirit and intent of the present invention.

In Figs. '7 to 10 of the drawings there is shown and described a certain specific form and arrangement of parts for detachably supporting the tension device from the bobbin for the purpose of illustrating one-form which the invention may assume in practice. It is to be understood. however, that other forms and arrangements of means may be employed for this purpose and that the invention is not to be limited to the specific form and arrangement ofthese parts, as shown except as the same may be specifically set forth in the appended claims, which claims are to be broadly construed in the light of my invention.

What I claim is:-

1. In a loom shuttle of the type employed in replenishing looms, a resilient bobbin holding means, a bobbin directly supported by said holding means for automatic insertion within or ejection from said shuttle, a cage removably secured to said bobbin, and a tension member carried by said cage and mounted in operative relation with said bobbin.

2. The combination with a loom shuttle body of the type employed in replenishing looms hava vertical bobbin receiving opening, of a transferrable ring bobbin, a ring supporting tensioning member, and resilient holding jaws carried by said loom shuttle body and located within said opening for supporting said bobbin and tensioning member in spaced relation with each other and for receiving or releasing said bobbin and tensioning member upon their insertion within or ejection from the shuttle body.

3. A loom shuttle of the type employed in replenishing looms having a vertical longitudinal opening and provided with correspondingly shaped holding members located within and adjacent to opposite ends of the opening, and separate transferrable ring bobbin and tensioning members supported by the holding means located at opposite ends of the longitudinal opening, said bobbin and tensioning members being reversibly engageable with the oppositely positioned holding means upon the insertion of said bobbin and tensioning members within the shuttle body.

4. The combination with a loom shuttle of the type employed in replenishing looms having a longitudinal opening extending vertically therethrough and provided with separate holdin means located within and adjacent to opposite ends of the opening, of separate transferrable ring bobbin and ring tensioning members supported by said separate holding means and adapted for automatic insertion within or ejection from their respective holding means substantially simultaneously through vertical movementof said mem-' bers relative to said loom shuttle.

5. In a loom shuttle of the type employed in replenishing looms provided with an opening extending vertically therethrough, the combination with opposed resilient holding means for receiving and holding the base of a ring bobbin so as to permit the automatic insertion or ejection of the bobbin to or from said opposed resilient holding means, a transferrable ring bobbin, holding means carried by said shuttle for receiving and holding a ring carrying tension member in spaced relation with the bobbin, and a ring carrying thread tensioning member automatically insertible within or ejectible from engagement with said last named holding means.

6. In a loom shuttle of the type employed in replenishing looms and having a bobbin receiving opening extending vertically therethrough provided with resilient opposed bobbin holding means, the combination of a transferrable bobbin having a spindle portion and a base provided with means for detachable engagement with said holding means, a tension holding member detachably secured to the bobbin outwardly of said detachable engaging means and projecting beyond the spindle portion of the bobbin for supporting a tension member, and a tension member carried by said tension supporting holder and located in spaced relation with thespindle.

7. A loom shuttle of the type employed in replenishing looms having an elongated opening extending therethrough and provided with resilient clam ing jaws located within the opening and adjacent to the opposite ends thereof, and thread carrying and tensioning members each having ring portions interchangeably engageable with the holding means located at opposite ends of the opening and supportable thereby in cooperative relation with each other and for automatic insertion within or ejection from the shuttle.

8. In combination, a loom shuttle of the type employed in replenishing looms having a bobbin receiving opening and provided with opposed resilient bobbin holding means positioned upon opposite sides of the longitudinal center line of the opening, a transferrable ring bobbin, a transferrable tension member, and means independent of the bobbin holding means for receiving and supporting the tension member in operative relation with said bobbin.

9. A loom shuttle of the type employed in replenishing looms provided with an elongated opening extending therethrough, spaced holding means carried by said shuttle and having gripping portions located upon opposite sides of the opening, a transferrable bobbin, and transferrable tension member each having portions'engageable with either, of said gripping portions interchangeably for supporting the bobbin and tension member in operative relation with each other within the shuttle opening.

10. In a loom shuttle, a tension member comprising a casing having opposed end walls provided with aligned openings and openings radially positioned with respect to said thread openings, and pivotally supported tension arms within said casing mounted for movement transversely of the axis of said aligned thread openings.

11. In a device of the character described, a thread tensioning member comprising a casing, a shaft mounted within the casing, sets of resiliently controlled tension arms carried by said shaft and spaced from each other longitudinally of the shaft, thread guiding means carried by said arms and mounted for movement in areshaped paths around said shaft as a center, and means carried by the shaft normally urging one set of tension arms into angularly displaced relation with the other set of tension arms relative to said shaft.

12. In a replenishable loom shuttle, opposed tension member holding jaws carried by said shuttle, and a self-contained transferrable tension member provided with means engageable with or disengageable from said holding jaws for transfer to or from said shuttle.

13. A self-contained transferrable tension member for loom shuttles comprising a casing having a continuous imperforate side wall and perforate opposed end walls, and pivotally mounted arms spaced from each other longitudinally of the casing and located within the casing for applying tension to a weft thread passed through certain of the perforations formed in the opposed end walls.

14. In a tension device for loom shuttles, a plurality of tension sleeves spaced from each other and pivotally mounted for movement about a common axis, thread guiding members carried by said sleeves and movable into staggered relation with each other or into positions of alignment with each other respectively to impart tension to a thread passed through said thread guiding members, and means located between said spaced sleeves for resiliently controlling the movement of said thread guiding members.

15. In a loom shuttle of the type employed in replenishing looms, a transferrable ring bobbin,

a ring tension member, opposed spring means carried by said shuttle for supporting said bobbin and tension member each in operative relation with the other, and resilient arms carried by said tension member and movable in planes located transversely of the longitudinal axis of said bobbin for applying tension to the weft thread.

16. A transferrable tension device for replenishable loom shuttles comprising a casing provided with side and end walls, said end walls having aligned thread openings, means carried by said side wall for transferrably engaging supporting means within a replenishable shuttle, and tension means positioned within said casing for applying tension to a weft thread passed through said aligned openings.

1'7. In a loom shuttle of the type employed in replenishing looms, a transferrable bobbin, a thread tensioning member transferrable to said shuttle independently of said bobbin, and means carried by said shuttle for receiving and holding the thread tensioning member so as to permit the automatic insertion or ejection of the thread tensioning member into or out of the shuttle.

18. In a loom shuttle provided with resilient holding jaws and constructed for the insertion of a transferrable ring bobbin into co-operative engagement with the holding jaws from one side of the shuttle and the ejection of said bobbin from engagement with said holding jaws at the opposite side of the shuttle in a replenishing operation, a transferrable ring bobbin, a transferrable thread tension member, and means carried by the shuttle for supporting the tension member within the shuttle independently of the bobbin to permit its insertion within the shuttle or its ejection therefrom in a replenishing operation.

19. In a loom shuttle of the type employed in replenishing looms, opposed sets of resilient holding jaws carried by the shuttle adjacent to the opposite ends thereof, a transferrable ring bob- .bin, a transferrable ring tension member, cooperating means carried by said jaws, tension member and bobbin for supporting the bobbin and tension member in the shuttle to permit their automatic insertion within or ejection from the shuttle in a replenishing operation.

20. A loom shuttle of the type employed in replenishing looms having an elongated opening extending entirely through the shuttle body and provided with opposed holding jaws located within and adjacent to opposite ends of the opening, a transferrable ring bobbin and tension member mounted within the opening and located in spaced relation with each other for simultaneous insertion within or ejection from the shuttle in a replenishing operation, and co-operating means carried by said holding jaws and bobbin respectively for maintaining said bobbin and tension member in co-operative relation within the shuttle opening.

21. The combination with a loom shuttle of the type employed in replenishing looms having a bobbin receiving opening and provided with means for replenishably supporting a transferrable bobbin, a transferrable bobbin provided with a base having means for detachable engagement with said holding means and adapted for insertion within or ejection from the shuttle opening in a replenishing operation, a take-up tension member associated with said bobbin for transfer to or from said shuttle, and means for supporting said tension member in aligned relation with said bobbin within the bobbin receiving opening of the shuttle.

22 The combination with a loom shuttle of the type employed in replenishing looms having a bobbin receiving opening and provided with means for replenishably supporting a transferrable bobbin, a transferrable bobbin of the fixed spindle type provided with a base having means for detachable engagement with said supporting means and adapted for insertion within or ejection from the shuttle opening in a replenishing operation, a tension member associated with and spaced outwardly from the spindle portion of said bobbin for transfer to or fromsaid shuttle, and means for supporting said tension member in co-operative aligned relation with said bobbin within the bobbin receiving opening of the shuttle.

23. In a loom shuttle of the type employed in replenishing looms, a transferrable bobbin of the fixed spindle type, means carried by said shuttle and bobbin respectively for supporting the bobbin within the shuttle so as to permit the automatic insertion or ejection of the bobbin to or from the shuttle in a replenishing operation, a take-up tension means associated with said bobbin for transfer to or from the shuttle, and means for supporting said tension member in longitudinally aligned spaced relation with said bobbin within the shuttle.

24. The combination with a loom shuttle of the type employed in replenishing looms having a bobbin receiving opening and provided with means for replenishably supporting a transferrable bobbin, a transferrable bobbin of the fixed spindle type'provided with a base having means for detachable engagement with said supporting means and adapted for insertion within or ejection from said shuttle opening in a replenishing operation, and a take-up tension member associated with said bobbin for transfer therewith to ber located within the casing and mounted in substantial parallelism with and ofiset from the longitudinal axis of the bobbin, and resiliently controlled opposed tension members supported by said shaft member for movement about said shaft member in planes located at substantially right angles to the path of direct travel of the thread as it passes through said thread receiving openings from the bobbin to the weave to impart tension to the thread.

26. In a loom shuttle structure, a thread tensioning device comprising a casing having thread receiving openings formed in opposed walls thereof and spaced from each other longitudinal of the shuttle, a shaft member located within the casing and mounted in substantial parallelism with the longitudinal axis of the shuttle, oppositely positioned tension arms carried by said shaft and movable towards and from a common path which is substantially coincident with a line joining said thread receiving openings, and threadguiding means carried by said tension arms for guiding and tensioning the thread as it passes through said casing.

27. In a loom shuttle structure, a thread tensioning device comprising a casing provided with opposed thread guiding openings and having a plurality of opposed tension arms pivotally supported within the casing for movement about a common center, and thread guiding loops carried by said arms alternately positioned longitudinally of the shuttle and movable in planes located at substantially right angles with the longitudinal axis of the shuttle and towards and from the line connecting said thread guiding openings for guiding and tensioning a weft thread in its passage to the weave.

28. The combination with a loom shuttle of the type employed in replenishing looms having a bobbin receiving opening and provided with. means for replenishably supporting a transferrable bobbin, a transferrable bobbin provided with a base having means for detachable engagement with said supporting means and adapted for insertion within or ejection from the shuttle opening in a replenishing operation, and a tension member associated with said bobbin for transfer therewith to or from said shuttle while maintained in longitudinally aligned outwardly spaced relation with said bobbin.

WILLIAM E. LUNDGREN.

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