US2560476A - Attachment for spinning frames - Google Patents

Description

.Fufiy M 1953 J. HREDDLE mm. 9 9

I ATTACHMENT FOR SPINNING FRAMES Filed Dec. 29, 1948 5 Sheets-Sheet 1 3nventov$ Jere-R H. 51001.1;-

14541115? 672mm Rae-0 Gtkornegs July 10, 1951 J. H. RlDDLE ETAL ATTACHMENT FOR SPINNING FRAMES 5 Sheets-Sheet 2 Filed Dec. 29, 1948 I N VEN TORS J: 7141? ll- [P100]. 5

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ATTACHMENT FOR SPINNING FRAMES Filed Dec. 29, 1948 5 Sheets-Sheet 5 I'mnentors .7275? h. Flop/,5

Gttornegs July 10, 1951 J. H. RIDDLE ETAL 2,560,476

ATTACHMENT FOR SPINNING FRAMES Filed Dec. 29, 1948 5 'She't'S-Sheet 4 fig. .9

Jl'fl? H. 6 70am? mun? 640105 19550 IN V EN TORS July'lO, 1951 J. H. RIDDLE EI'AL. 2,560,476

ATTACHMENT FOR SPINNIIINGY FRAMES Filed Dec. 29, 1948 5 Sheets-Sheet 5 lira? l1. P/00Lf INVENTORS Patented July 10, 1951 STATES .r or-Fiea 2,560,476 ATTACHMENT FO erene mess of lliiassachusetts- Application December 29, 1948, Sg ria'l No 67,928

7 laims- 1 This invention relates to spinning frames, and more" particularly to an attachment for such frames adapted to avoid defective winding of bobbins formed on the frames.

'It is common practice in processing yarn on a spinning frame to feed a reinforcing thread so that it is wound about the yarn to strengthen it. The yarn which is fed for reinforcing in this manner is usually referred to as filling, and the reinforcing thread is known as a reinforcing thread; the strengthened yarn being characterized by a spiral disposition of the reinforcing thread about the filling yarn. Strengthened yarn of this sort is used extensively, for example, in the manufacture of blankets and blanketing.

One of the troublesome problems encountered in processing yarn in this manner is that the relatively weak filling yarn is subject to frequent breaking with the result that the stronger reinforcing thread remains trained along through themachine for Winding onto the bobbins being built. As a single operator is commonly assigned to a number of frames, this situation can continue unattended for a considerable period with consequent defective winding of the bob.- bins and resulting seconds in subsequent weaving operations if the defective bobbins are not discovered.

Prior attempts have been made to avoid the above difiiculty by providing a thread breaking means which will sever the reinforcing thread whenever the filling yarn breaks and thuspreventrwinding of the reinforcing threadalone onto the bobbins. These prior devices are somewhat. complicated in their mechanical constructionand have not been adopted generally. Oneof the fgatures of our present; invention is'that it provides avery simple mechanism which is free of mechanical complications and ispractically foolproof in its operation. This device comprisesga slotted member adapted for mounting on a spinning frameon which the filling yarnandreinforcing thread are combined by the usual twisting operation, and the slotted memberbeing arranged adjacent to the travel of the twistedfilling yarn and reinforcing thread suchthat they will not, enter the slot in this member but when the filling yarn breaks and the reinforcing thread is traveling alone, it will promptly enter the. slot and besevered and thereby prevented from .con-

tinuing to wind onto the bobbin withoutthefi-lling yarn.

This. slotted member may be either in thesform of a fixed plate mounted on the frame. guide bar at each twister. location :and having" at. leastone slot or notch formed therein and with sufficiently sharp edges to effect a shearing actionon the shit; or the slots maybe formed directly 'iinthe guide bar and this bar caused to reciprbate, 'e'n' gaging insliding contact therewith a stationary member with which it forms a shearing action for severing or cutting of the reinforcing thread as the latter is brought into contact-with the stationarymernber by the slotted reciprocating member;

described herein and shown in the accompanying drawing, the thread breaking means" is embodied in a twister frame which representsthe principal field of application, though this invention may be adapted for use on'other types of spinning frames.

Briefly described, one form of the thread breaking' means of the present invention'comprises a plate adapted for disposition ata suitabl'e'point in a spinning frame such as a twister frame" in relation to the filling yarn and associated'reinforcing thread, and formed with an edge having a configuration characterized by aplurali'tyof slits extendinginto the body of the thread breaking plate transversely with respect to'this' edge ahd'adapted to receive and grip the "reinforhing thread and thereby sever" it whenever the reinforcing thread is trained through fth'e twister frame alone u on breaking of the fillingya'rn. Another important form of .thetli'rea'd breaking means of the present invention comprises [an filfeneementfmwhichthe guise bar er the twister fr me is reciprocated and is fo rmed for entit iping .the reinforcing thread wheniit is trained when w wsi j fr' e' u o br iegp i efi in ra e n i wmweantry n eans formedlfor supporting the guide bar for eei r etion d spose o s e r n actio w th th .r i l bq ti s ui bar wh e y th reinforcing thread is severed when entrapped.

The invention is described more in detail,- below in connection with the accompanying ,drawing..=in.which:

Fig. 1 is a fragmentaryfront elevation .ofa twister frame illustrating the .operativedispositionofthe thread breakingplates ontheguide ar;

Big. 2 is a. corresponding side elevation;

liig. -3 is an enlarged front detail ofv this form of .the thread. breaking means;

Fig. 4' isa corresponding. plan detail;

.aFig. 5; is; a perspective. detail of. the. relative d-is.- positionof this formpf the. thread breaking 3 means and the filling yarn and associated reinforcing thread trained through the frame;

Fig. 6 is a corresponding perspective detail illustrating the operation of this form of the thread breaking means in severing the reinforcing thread when the filling yarn breaks;

Figs. '7 and 8 are respective front and bottom plan views illustrating an arrangement of this form of the thread breaking means disposed on the guide plate of the twister frame;

Fig. 9 is a fragmentary front elevation of a twister frame illustrating the operative disposition of the reciprocating guide bar form of the thread breaking means of the present invention;

Fig. 10 is a perspective detail of the relative disposition of the reciprocating guide bar form of the thread breaking means and the filling yarn and associated reinforcing thread trained through the frame; and,

- Fig. 11 is a corresponding perspective detail illustrating the operation of the reciprocating guide bar form of the thread breaking means in severing the reinforcing thread when the filling yarn breaks.

- Referring at first to Figs. 1 and 2 of the drawing, the disposition and arrangement of the thread breaking plates ill of the preseent invention are shown in relation to a usual type of twister frame in which a yarn package H is dis- I through a pair of drawing rolls [5, and is angled over a guide bar l6 to a twister head [1. Beyond the twister head H, the filling yarn I2 is extended through a second pair of drawing rolls l8, and through a guide plate [9 to a ring and traveller mechanism for winding onto the bobbins 2i being built.

The reinforcing threads l3 are taken off of the packages l4 over a guide rod 22 and are looped around a second guide rod 23 so as to be spiraled onto the filling yarn l2 by the action of the twister head l1 on the length of filling yarn extending from the first pair of drawing rolls l5. And the reinforcing threads 13 are carried forward in this manner with the filling yarn I2 to be built into the bobbins 2| being formed on the frame, as illustrated.

- Now when the filling yarn l2 breaks, as frequently happens during normal operation of the twister frame, if the break occurs below the second pair of drawing rolls IS, the broken end will be taken up on the clearer roll 24; or if the break occurs above these rolls the filling yarn will accumulate at some other point on the machine as it is fed by the first pair of drawing rolls l5. In any event, the stronger reinforin thread I3 will remain trained through the frame, as mentioned above, and will be wound onto the bobbins 2| alone as operation of the frame continues, unless this result is prevented.

It has been noted above that detection of this situation by an operator tending several frames may be delayed for a considerable period so that the possibility of winding defective bobbins is continually present. To remedy this difficulty, the thread breaking plate I!) of the present invention is disposed on the twister frame, appropriately in association with the guide bar IG- as shown in Figs. 1 and 2, to sever the reinforcing thread [3 Whenever it is trained through the frame alone upon breaking of the filling yarn l2.

The form and arrangement of the thread breaking plate It is illustrated more in detail in Figs. 3 and i of the drawing. As shown, the thread breaking plate IEI comprises a relatively thin strip of metal, suitably a strip of spring steel or the like, formed for attachment to the guide bar It as by screws 25. As mentioned above, the filling yarn l2 and associated reinforcing thread [3 are angled over the guide bar It as they are lead to the twister head I1, and the thread breaking plate it] is mounted on the guide bar 16 so that the plate i0 is spaced from the filling yarn l2 and associated reinforcing thread [3 when they are trained together through the machine.

When the filling yarn l2 breaks leaving the reinforcing thread 13 extended over the guide bar it alone, the disposition of the reinforcing thread l3 from the package M causes the reinforcing thread l3 to shift to the right on guide bar l6 (compare Fig. l), and a slot 26 is formed in the top of guide bar It to receive the reinforcing thread I3 when it shifts in this manner. The slot 26 is angled slightly, as indicated in the drawing, to correspond with the angled disposition of the reinforcing thread I3 as it shifts. This slot 26 communicates with an aperture 21 in the body of guide bar It, so that when the reinforcing thread I3 is received in slot 26 it is directed into the aperture 21 and accordingly comes into contact with the thread breaking plate Ill.

The thread breaking plate I0 is arranged with a configurated edge disposed for contact by the reinforcing thread It, the configuration of this edge being characterized by a plurality of slits 28 extending into the body of the thread breaking plate In and oriented transversely with respect to the edge. The slits 28 are preferably formed by shearing the thread breaking plate so that the portions defined by the slits are displaced with respect to each other and with respect to the body of the thread breaking plate in, as illustrated in Figs. 3 and 4. This arrangement conditions the slits 28 with spaced edges at their open ends and a tapered throat, so that they are adapted to receive a reinforcing thread directed into contact with the edge of the thread breaking plate I0 and grip the reinforcing thread as it works into the tapered throat, and thus effect severing of the reinforcing thread.

This action of the thread breaking plate I!) is illustrated in Figs. 5 and 6 of the drawing. In Fig. 5 the disposition of the filling yarn l2 and associated reinforcing thread l3 when trained through the frame together is shown in relation to the thread breaking plate It]. Under these circumstances, the filling yarn l2 and reinforcing thread l3 are spaced from the thread breaking plate It by the guide bar I6, as noted above. Upon breaking of the filling yarn l2, however, the reinforcing thread I3 will shift as described above until it reaches the slot 26 and is thereby directed into the aperture 21 and into contact with the edge of the thread breaking plate l0. When this happens, the reinforcing thread I 3 will find one of the slits 28 and enter it to be gripped and broken as illustrated in Fig. 6.

The action of the thread breaking plate I!) is thus automatic, and the particular bobbin 2| involved will continue to rotate without winding yarn until the operator tending the twister frame reaches this point and repairs the break in the filling yarn i2. As a result, defective winding of the bobbins 2| because of broken filling yarn is entirely avoided.

The above described arrangement of the thread 1 5 breaking plate In on the guide bar I6 "has been 'found "to be advantageous and convenient because the thread breaking 'plate Hlis easily installed at "this point and is in full view so that breaks in the filling yarn are easily detected. 'I t shouldbe noted, however, that the thread breaking plate I0 may be mounted at any other suitable point on the twister frame, if desired. For example, a suitable alternative arrangement of the thread breaking plate Ill on the guide'plate I9 is illustra'ted in "Figs. '7 and 8 of the drawing. According to this arrangement, the thread breaking plate ID is mounted on the bottom or the guide-plate I9, as by screws 29, so that the'edg'e -config'iirated by the slits 2-8 is disposed for contact with a filling yarn and asscciat'ed'reinforcing thread extended through the guide plate. When the filling yarn and reinforcing thread are associated, the diameter of the resulting strand is too large to fit into any of the slits 28 and the strand will accordingly-ride 'over the edge 'of the thread breaking plate I0. Upon breaking of the filling yarn, however, the remaining reinforcing thread will find one of the slits 28- and be received and gripped in this slit, and thereby severed, in the same manner as described above. The thread breaking plate It! may likewise be disposed at'any other'suitable point-in the'twister frames'ystem as may be convenient-or necessary in particular circumstances.

The reciprocating guide bar form of the thread breaking means of the present invention is shown in Fig. 9 of the drawing. This form comprises'an arrangement for reciprocating the guide bar I6 which is formed with a slot 30 for entrapping the reinforcing thread I3, as described further below. Studs 3I, which are disposed for shearing action with the slotted portions of guide bar I6, are attached to the twister frame, as by lock nuts 32, for supporting the guide bar I6 for reciprocation. The studs 3I have heads 33 formed with grooves 34 for supporting the reciprocating guide bar I6 horizontally on the frame, and the edges of these grooves 34 cooperate with the edges of the slots 30 to effect the above mentioned shearing action. The guide bar I6 is reciprocated by a rocker arm 35, which is mounted on a rock shaft 36 actuated from a crank plate 31, or cam or the like, and connected to one end of the guide bar I6 by a pivoted connecting link member 38 which is arranged with a screw adjustment as at 39 for positioning the reciprocating traverse of the guide bar I6 with respect to the studs 3|.

The form and arrangement of a stud 3| and a portion of the reciprocating guide bar I 6 and their association on the frame before and after the filling yarn I2 breaks and the reinforcing thread I3 is severed are illustrated in detail in Figs. and 11 of the drawing. The slot 30, like the slot 26 described above in another embodiment, is angled slightly, as indicated in the drawing, to correpond with the angled disposition of the reinforcing thread I3 as it shifts, as described further below.

As shown in Fig. 10, the filling yarn I2 and the associated reinforcing thread I3, when they are angled over the reciprocating guide bar I6, are positioned from the slot 3!] and from the stud 3|.

The slot 3!] is formed with a width smaller than '6 alone, the disposition of thereinforcingthread1:3 from the pa'ckage I4 causes the reinforcing thread I3 to shift to the right on the guide bar IS, the shifting of the reinforcing thread I3 and thereciprocation of'the'guide bar I6 coacting todirect the reinforcing thread I3 into the angled slot 30. The guide bar I6 is reciprocated constantlyduring the operation of the twister frame by the crank plate actuated'rocker arm 35 so that the reinforcing thread I3, after passing into the angled slot 30, is entrapped in the slot 30andis directed-by the horizontal movement of the. guide bar 1-6 in 'thegrooves 34 against'the cooperating edges of'the groove 36 and the edges of the slot 3 0, thereby severing the reinforcing thread I3. by a shearing action as shown in Fig. 11 of -'.the drawing. 1

'--Like-the acti0nof thethread breaking plate I0, the action of the reciprocating'guide'bar form :of the thread breaking means is automatic, and the particular bobbin 2I involved will continue rotate without winding any material thereon until attended to by the operator. Thus, defective winding of the bobbins resulting'from' brokenfilling yarn is eliminated.

We'claim:

1. 'In a spinning frame in which a filling yarn and reinforcing thread are twisted together, lead over a guide bar, and wound onto a bobbin, the improvement comprising a reciprocating slotted member over which the twisted filling yarn and reinforcing thread travel, the slot in said'mem-v ber having an insufficient width to accommodate the combined filling yarn and reinforcing thread, but having sufiicient width to accommodate said reinforcing thread alone when the filling yarn breaks, and a fixed cooperating member with which said reciprocating member is associated in sliding contact and which will effect shearing of said reinforcing thread in said slot when the reciprocating member brings the reinforcing thread in contact with this fixed member.

2. A spinning frame as defined in claim 1 and in which said slotted reciprocating member is the guide bar on the spinning frame and is slotted adjacent to each individual twister location.

3. An attachment for spinning frames of the type in which a reinforcing thread is fed for association with filling yarn, comprising means formed for entrapping the reinforcing thread when said reinforcing thread is trained through the spinning frame alone upon breaking of said filling yarn, stationary means formed for supporting said entrapping means and disposed for shearing action with said entrapping means, and means for reciprocating said entrapping means for shearing action with said stationary means so that the reinforcing thread is severed when entrapped.

4. An attachment for spinning frames of the type in which a reinforcing thread is fed for association with filling yarn, comprising a reciprocating guide bar slotted for entrapping the reinforcing thread when said reinforcing thread is trained through the spinning frame alone upon breaking of said filling yarn, stationary means formed for supporting said guide bar and disposed for shearing action with the slotted portion of said guide bar, and means for reciprocating said guide bar for shearing action with said stationary means so that the reinforcing thread is severed when entrapped.

5. An attachment for spinning frames of the type in which a, reinforcing thread is fed for association with filling yarn, comprising a reciproeating guide bar formed with a slot positioned to entrap the reinforcing thread when said reinforcing thread is trained through the spinning frame alone upon breaking of the filling yarn. a stud having a grooved head for supporting said guide bar horizontally on the frame, and means for reciprocating said guide bar so that the entrapped reinforcing thread is directed against the edges formed by the grooved head of the stud thereby severing the reinforcing thread by a shearing action.

6. In a spinning frame, the combination with means for. feeding a plurality of reinforcing threads for association with strands of filling yarn and jmeans for building the associated strands .ioffilling yarn and reinforcing threads into bobbins, of thread breaking means for preventing defective winding of said bobbins, said thread breaking means comprising a guide bar mountedfor reciprocation on said spinning frame and formed with slots positioned to entrap the reinforcing threads when said reinforcing threads are; trained through the spinning frame alone upon breaking of said strands of filling yarn, stud members having grooved heads supporting said guide bar for reciprocation on the frame, means for reciprocating said guide bar, and means for positioning said guide bar with respect to said stud members whereby an entrapped reinforcing thread is severed by the shearing action of the grooved head of a stud member with the slotted portion of said guide bar. 1

7. In a spinning frame, the combination with means for feeding a reinforcing thread for association with a filling yarn and means for building the associated filling yarn and reinforcing thread into bobbins, of thread breaking means comprising a guide bar mounted for reciprocation on said spinning frame and formed for entrapping the reinforcing thread when said reinforcing thread is trained through the spinning frame alone upon breaking of said filling yarn, stationary means supporting said guide bar for reciprocation on said spinning frame and disposed for shearing action with the entrapping portion of said guide bar, and means for reciprocating said guide bar for shearing action with said stationary means so that the reinforcing thread is severed when entrapped.

JETER H. RIDDLE. WALTER GARVIS REED.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS

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