US1576030A - Automatically-threading shuttle for looms - Google Patents

Description

m 0 T m W N. W. BRANNON AUTOMATICALLY THREADING SHUTTLE FOR LOOMS Filed Oct. 30, 1925 March 9 1926.

I ,JTTORNEY Patented Mar. 9, 1926.

1,576,030 UNITED STATES PATENT OFFI E;-

NEM WILLIAM BRANNON, or snnnasourn CAROLINA, AssIeNoI 'ro DBAPER oon- PORATION, or I-IOPEDALE, MASSACHUSETTS, A CORPORATION or MAINE.

AUTOMATICALLY-THREADING SHUTTLE FOR LOOMS.

Application filed October 30, 1925. Serial No. 65,880.

To all whom it may concern Be it known that I, NEM WILLIAM BRAN- NON, a citizen of the United States, and a resident of Greer, in the county of Grreenville and State of South Carolina, have invented an Improvement in Automatically- Threading Shuttles for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to automatically threading shuttles and is more especially directed to the tension means for exerting proper tension on thethread during weaving.

It has heretofore been common to provide various means of shuttle-tensions to insure laying the 'fillingstraightin the shed, and some of such tension devices have been made adjustable so that the tension on the thread may be varied from time to time in accordance with the character of the thread in use. In such cases, however, theadjus'tability of the tension device has not been readily accomplished and usually some tools or adjusting devices have been necessary in order to vary the tension exerted by the tension device.

One of the objects of, the present invention is to provide a shuttle of the automatically replenishing type with atension device which may be readily. manipulated by the weaver to vary the tension either more or less without necessitating either removal of the tension device itself or the employment of any tools for the purpose.

In the illustrated form of the invention the shuttle is shown as provided with a threading block of the open type, such, for instance, as shown and described in the-Eda on the occurrence of aloop or overthrow,

and while the advantages of the present invent-ion are well manifested in connection with such character of shuttle and threading block, it is to be understood that applicant may employ the present invention in connection with other types of automatically threading shuttles.

The tension device of the present invention consists of a tension pad which as shown invention detached;

has a laterally flaring opening .for the entrance of the thread as it swirls or balloons on the first pick following replenishment and thereafter exerts tension upon the is provided which also has a lateral opening and an arm extending over oneof the jaws of the pad and formed-of a pliable, substantially non-elastic material or metal,

which may be bent in different positions andwhen bent will retain its bent-form to there by vary the opening, through which the thread passes during weaving andconsei quently the tension exerted upon the thread.

-The invention and new combination of parts will best be made clear from the. following description and the accompanying drawings of one good form thereof.

In the drawings: I 1 I Fig. 1 is a perspective View of the threading end of a loom shuttle provided withthe present invention;

Fig. I threading end of the shuttle shown in Fig. 1;

Fig. 3 is an enlarged *detached detail showing the tension device of the present Fig. 4 is an elevation of the tension device lookingin the direction longitudinal- 1y of the shuttle and showing the tension pad with the jaw opening contracted for exeirting increased tension upon the thread;

Fig-5 is a view similar to that of Fig. 4 showing the jaw opening of the pad. enlargedto exert less tension upon the thread.

The loom shuttle 1 may be of usual character and formed of wood for the proper'support of the filling earrier2 on which the filling or thread 3 is wound, and as iscom mon in filling replenishing shuttles the lower wall of thev shuttle is cut away to provide an opening 4 for the discharge of the filling carrier. I

Frontward of the bobbin chamber the shuttle is provided witha threading block receiving chamber in whiche is secured the threading block 5 having a longitudinally extending thread passagefi, and laterallyof 'thread during weaving as the thread draws 2 is a longitudinal section ofthe the longitudinally extending thread passage thesh'uttle isi'provided with the usual side delivery eye 7.

Frontward shuttle wood is cut away as at'8to .provide a leader 'for the thread that it may pass into control of the threading bloch on vthe first pick following replenishment.

The threading block *5 is-secured in the shuttle body-by the usual crossbolt 9 and as showninthe pres'ent instanceythe pin'lO extends downwardly from the threading blook and i s received in an openingrin the shuttle "body; {lhese pa rts may construction and as more particulat'ly shown "and described in the Stimpson patent, to which reference has hereinbefore been jmade. The longitudinally extendi ng threzulpassagie 6, when'ot the open top character-pas indicated, has a thread casting device 11 which 'lnay he formed as afscroll of substantially the same general character as that which is "more fully {shown and '-clescr'ibe'cl in the sump-sen patent, and if desired; the thread ing block 5-may be" f(.irmed of cast ironhav: *ing a rust-prooflcovering. a

y The tension device, in accord ance Twith the present invention, is preferably located in the longitudinally extending Pthread tutlinally extending thread passage When the shuttle is threadedythe thread 'drawsl'beftween the upper j aw '14 and thelow 'er aw '15 of the pad'with theresult 'that if the'upper and lower jaws are brought closer together and retained m such positlo'n, the 'tenslon 1 fon-the t'liread Will be greater than if they are further: apart, a condition indicated in nr s. wand r i r The? tension pad 12 may!bejsuitably shaped in aeco'fiance-with the conditions of use,"hut

as 'he'rein shown it is substantially of block 'g'form anu thelaterally ezttending jaw 141mg its'outer surface be'velljedor inclined as at *16, in order "to more effectively direct the thread into control of the tension de'vice, as the 1 thread "balloons from the -bobbin"on the first pick following re lenishment.

The padholder may he variously contrived, but one of the essential "features thereof is that it' be formed of a pliable or ductile material, such as lead, for instance,

of the threading block 5 the be of usual which may be bent into difierent positions and *when iso bent retain its 5 bent position.

comprises a base portion 17 which may rest upon or in a groove fforlned'in'the bottom wall 01" the threadingblock "receiving cha1nber, as'indicatedin 2, and such base portion 17 is provided with a downwardly extending fiuger 18 that projects into a cutaway or rabbeted portion 19 formed inthe shuttle wood and preferably ln the "recess which receives" the'holt -lO of the threading block. Thebase portion 17 is-fo'tsuificient length to "enablethe pad "holder portion proper ofthe holder to be lOCtltBLllJGt-WQGH the threading block. ;-and bobbin chamber an d, as herein shown, the pad holder has upwvardly' projecting portiIOns QO, 21H and 22 wl'iich'engage the lower or base portion of thepad,-and the upwardly projecting portion 23 preferably formed at the side ofthe :p'ad remote from the: moutlr or opening 13, and such upwardly projecting portion 23 has an arm 24 which overlies i the upper jaw 1% of th'e pad the construction being such that the arm 24L which is fOl'lllGClO'f pliable "and substantially non-elasticmaterial as deretain its=bentipositionto define the sizeor character of the thread engaging openlng of'the pad. As-"shownin Fig; h the armfi l has been bent: downwardly, with the result "that theiupperzjaw 1450f the-pad has been moved towards the lower jaw 15 an'd the mouth 13 of the: pad 11 been corresponding 1y contracted to "exert considerable f tension upon the thread d whieln as above stated, passes between the Jaws of the pad.

In Fig." 5 =th'e l opposite condition has been brought "about th at is, the arm or plate 24 rwerlying the upper jaw I4: of the pad has been bent upwardly, as compared "with the position ofg'parts in Fig. 4, with the result separated and the mouth 13 0f=the opening has been correspendingly "enlarged to there-,

by'vary the tension upon the thrlead.

WVhen t-hewweaver rwi hes to 'increase the mtension upon thethread :inu'se, hesimply f presses i downwardly upon the plate or .arm 124: of the} pad i holder, and such pressure: may be conveniently exerted by the finger of the wearer. On the "other hand, should the weaver- 'desire to decrease the tension on the thread, he has only to lift 01' bend the" arm or plate 24 upwardly, as indicated inFig. 5, it= bein' understood that the pliable and 1 substantially! nonel astic character orithe arm or plate 2% permits such ready bending by the finger of the weaver, land, whenbent, the arm retains the position tto which it'has been moved;

- FroIn the *constlruction describedyit will be clearly apparent that the pad being Thepad holder as shown inthe drawings formed of resilient material, such, for instance, as rubber or felt, and the pad holder or essential feature thereof, that is, the overlying arm or plate 21-, being torn'ied of substantially non-resilient material which may be bent into desired shape, and retain the bent term, the weaver can at once adjust the tension of the pad to suit the condition or character of the yarn in use without delay and without the use of special tools.

What is claimed is:

1. An automatically threading loom shuttle having a threading block provided with an open top threadpassage and a side delivery eye, a tension pad having a thread receiving opening with a flaring mouth, and a tension pad holder having a part enclosing one of the jaws of the flaring mouth of the tension pad formed of a pliable substantially inelastic metal that may be bent into different positions and retain its bent form to vary the size of the thread receiving opening and the tension exerted upon the thread during weaving.

2. An automatically threading loom shuttle having a threading block provided with a longitudinally cxtendingthread passage, a side delivery eye, a thread tension device having a pad with a mouth flaring laterally of the thread passage and an arm overlying the upper j aw of the flaring mouth and formed of pliable substantially inelastic material that may be bent up or down and retain its bent position to vary the tension exerted upon the thread during weaving.

3. An automatically threading loom shuttle having a threading block with a longitudinally extending thread passage and side delivery eye, a tension device comprising a tension pad having a lateral opening for receiving the thread, and a pad holder also having a lateral opening, and one arm overlying one jaw of the tension pad opening and secured to the shuttle body.

4. In an automatically threading shuttle for looms, the combination of the shuttle body having a threading block provided therethrough.

with a longitudinally extending thread passage and a side delivery eye, and a tension device comprising a friction pad havin a thread receiving opening and a pad hol er formed of a pliable substantially inelastic metal which may be bent into difierent pad holding positions and retain its bent form to var the size of the thread-receiving opening in the pad and the consequent amount of tension exerted on the thread passing 5. An automatically threading loom shuttle having a threading block and a side de livery eye, a thread tensioning pad having an opening through which the thread passes during weaving, and a pad holder formed of pliable substantially inelastic material having a bendable portion bearing upon the pad at one side of the opening for varying the size of said opening and the consequent tension exerted upon the thread.

6. An automatically threading loom shuttle having a threading block and a side delivery eye, a thread tensioning pad having an opening through which the thread passes during weaving and located between the threading block and bobbin chamber, and a pad holder formed of pliable substantially inelastic material having a bendable portion bearing upon the pad at one side of the opening for varying the size of said opening and the consequent tension exerted upon the thread.

7 An automatically threading loom shuttle having a threading block and side delivery eye, and a thread tension device comprising a rubber pad having jaws for receiving the thread, and a pad holder secured to the shuttle body and having apart overlying a jaw of the rubber pad formed of pliable substantially nonelastio metal that may be bent in the shuttle and retain its bent form to vary the tension exerted upon the thread during weaving.

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

NEM WILLIAM BRANNON.

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