US2046376A - Flyer - Google Patents

Description

July 7, 1936- P. A. GWALTNEY ET Al. 2,046,376

- FLYER Filed Oct. 29, 1935 \snu PH: LIP A. @WALT/vn* WILL/mwl G. REYNo/ DS [wem-aes @www Patented July 7, 1936 UNITED STATES FLYER Philip A. Gwaltney, McColl, S. C., and William G Reynolds, Charlotte, N. C. Y

Application october 29, 1935, serial No. 47,246

a claims. (C1. 11s- 57) This invention relates to improvements in flyers for roving frames and relates especially to means for compacting the roving as it passes through the presser foot so thatrthe short fibers will be rendered parallel to each other as well as parallel to the longer fibers.

In the process of drawing the slivers in roving frames the purpose is to gradually reduce the sliver or roving in size and at the same time render all of the fibers parallel to each other to increase their strength when they are twisted or spun. In drawing frames, the long fibers are engaged by the rolls and are straightened out due to the front rollers travelling much faster than the middle rollers, and the Vmiddle rollers rotating at a greater number of revolutions per minute than the back rollers. This causes a proper placing of the longer bers, but the short staple occurring along with the long staple is not rendered parallel as the rollers do not get the proper bite thereon. By passing the sliver through a constricted eye on the presser foot this condenses the fibers and causes a parallelization of the short staple also. By having the small hole and condensing the sliver as it passes therethrough, air currents are prohibited from passing through this hole. Heretofore, there has been a large hole and no condensing of the sliver, thus resulting in a stream of air being forced through this hole to disrupt the fibers, and esspecially the short fibers.

This improved presser foot is designed for use on any type of flyer frame and when used on twisters the improved presser foot, especially in a wet twist operation, will cause the projecting short fibers to be pressed flat and while in such condition will be laid onto the yarn package.

Some of the objects of the invention having been stated, other objects will appear as the description proceeds, when taken in connection Y with the accompanying drawing, in which:-

Figure 1 is a transverse vertical sectional view taken along through a portion of a roving frame Figure 'l is an isometric view of the roving strand guide mechanism detached from the flyer. I Referring more specifically to the drawing, the numeral I0 denotes a portion of a roving frame which has mounted on the upper portion thereof a plurality of roll stands Il, only one of which is shown, having lowerl rolls I2 and upper rolls I3 rotatably mounted therein. Between these rolls is adapted to pass a strand of roving which roving is constantly reduced inrsize as it progresses from the carding machine'through various drawing operations. From the rolls I2 and I3 the roving passes through the hole I5 in the upper portion of flyer I6 and` then outwardly through hole I1, around the topportion of the flyer and again downwardly through the interior of leg I8 of the flyer I 6. Another leg I9 is ldisposed on the opposite side of the pivot point of flyer I3 in order to counter-balance the flyer about its point of rotation. The flyer I6 has a pin 20 penetrating the upper end thereof which is adapted to fit in slot 2| in the upper end of spindle 22. It will be noted that the upper end of spindle 22 is slightly tapered and is adapted to fit into cavity 23 in flyer IB.

The lower end of spindle 22 has a beveled gear 25 fixedly secured on the lower end thereof which gear is adapted to mesh with a larger bevel gear 26 xedly secured on longitudinally disposed When shaft 21 is rotated, it is evident that rotation will be imparted to shaft 22 and to the flyer I 6. The intermediate portion of shaft 22 is rotatably mounted in bracket 28 and tubular member 29 which is integral with bracket 28, said bracket being secured lto traverse rail 30 by any suitable means such as bolts 3|.

-Rotatably mounted on tubular member 29 is a bevel gear 35 which gear meshes with a larger gear 36 mounted on longitudinally disposed shaft 31. The upper end of the hub portion of gear-35 has a rim 39 integral therewith upon which is adapted to rest the base of a bobbin. or quill 4Il. It will be noted that the rim 39 has an upwardly projecting member 42 integral therewith which is adapted to t into a slot in the lower end of quill 45 in order to cause the quill to rotate along with the gear 35. In the operation of the machine both the flyer I6 and the quill 40 rotate in the same direction but the bobbin 40 rotates at a. higher rate of speed than the flyer I6 inv order that the yarn may be wound onto the bobbin.

Loosely mounted around theupper central portion of leg I8 is the upper portion of presser 44.

Presser 44 has a circular portion 45 on the upper end thereof which surrounds the leg I8 and the lower portion of presser 44 also has a circular por; tion 46 surrounding the!V lower portion of leg I8. Integral with the lo-wer end of presser 44 presser foot 41 which has a plate 41a, on the free. end

thereof,V said plate having a centrally disposed VVhole 48 cut therein through which the roving strand I4 passes. After the strand I4 leaves Vthe Y lower endV of leg I 8 it is wrapped twice around the 'presser foot 41 and is then placed-in hole 48 through the slot or passageway 58 'cut in the =upper Vsurface of 'plate 41a.. Theplate 41a has a slight groove 5I cut on the interior surface of the plate adj acont the package of yarn in order to guide the it Vleaves the eyelet ora strand in a measure after hole48.

By observing Figuresv 4 "and'fjitg is: that the hole 48 is larger at the point of entranceof the yarn than it is at the point of `exit ofthe-yarn, and" p Y also set at an acute angleito the sides of plate 41a. Since the yarn, which passes through this holei sufficiently, large to` lllthe entire f hole,y this converginggand'condensing-featurefhas atendency to :cause :the-bers .in.-v fthestrand of v-rov'ing' or yarntof be :compacted and'V also to. bestraightened out inf parallel relation toieachother. Were it Ynot Y Y for the', fact that .this holeg-is constructed-.in 'this Y manner-'1and;off-suchfafpredetermined sizegasgwill fit` ther-size. of: thestrand of yarn.V drawn there# through,l there would-A beV no converging feature neither would theretbeV al tendencyito: compact'the strands, and holdthem in-v parallel relation` to each other. Insteadfthere- -is al tendency when azlarge eyelet`v is used; that fis.:- wherev the eyelet isfzvery muchrlargerth'anthe strand. drawn therethrough,V for the fiberszto fuzz'upg., Dueto therapidityat which thestr'a'nd passesfthroughzthehole,in conkan acute angle `to" vpresser foot.-

ventional presser foots,v the currents of air will Ycause the flbers'to flow outwardly on the outside I of the strand as the air is drawn through the large 1 hole'48 and therefore defeat the principal object of the` drawing out process which sftoY cause the fibers to bestraightened out in parallel relation to each other. By Yhaving a, funnel-shaped hole' V which is fllled by the strand passing therethrough Y the airis not permitted to enter the hole in 'thevi presser foot ,andV thereftn'eV the disruptingfactor' ofthe air passing through said hole is eliminated@ In the drawing and specication therehas been Set forth a preferred embodiment of the invention fWeclaimr, i

1.' An'improved flyer for flyer frames compris-Y ing. aa'presservfoot'fhavingj a; funnel-shaped' eye thereinthrough which is passed a strand normally f largerthanthe smallest portion kof the eye.

2. Apresser'foot for flyers having-.a hole there-VY through which is :funnel-shaped and disposedY at the=-planefoccupied byY the d 3. That .method fof spinning which `comprises Windinga strand onto a'package and converging 'and condensing the strand as'it is wound ontorthe package by [passing` it Vthrough a` funnel-shaped passagewaywhoserestrictedportion is smaller thanr-the normal.v thickness of thestrand.

PHILIP A.GWAL'I'NEY.V WILLIAM G. REYNOLDS.

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