US1514253A - Spinning and doubling machine - Google Patents

Description

Nmy. 4 1924..

T. FORREST SPINNING AND DOUBLING MACHINE Filed Oct. l0 1917 3 Sheets-Sheet 1 5/1126: Q Team Faz s es,

T. FORREST SPINNING AND DOUBLING MACHINE Filed Oct. 10',

1917 3 Sheets-Sheet 2 Inward/i0? 16m. Fba resi,

6 i z 41% s.

Nov. 4 9 1924- T. FORREST SPINNING AND DOUBLING MACHINE Filed Oct. 10 1917 I .5 Sheets-Sheet 3 Invemio a: :mmmm @@z.

Patented v, 4,

t t a TOM FORREST, OF "NORTH ANDOVER, MASSACHUSETTS, ASSIGNOE, BY DIRECT LAND MESINE ASSIGNMENTS, TO DUPLEX YARN COMPANY, OF BOSTQN, ACEUSETTS,

A 003F01 T1031 OF MASSACHUSETTS.-

SZPG AND DOUBLING MACHINE.

Application filed October m, 1917. Serial ml 195,842.

To all whom a't may concern:

Be it known that I, Tom Fonnssr, a citizen.

novel mechanism for simultaneously spin-.3

ning and doubling 'the yarn as one operation.

In this connection I use the term spinning with the usualmeaning, as comprising the final drafting of the roving on the spinning frame and the imparting of the spinning twist to the individual strands;

My invention has also for its object the production of a mechanism that will, if desired permit simultaneous spinning of one roving composed of short fiber material and fiber material. "My improved machine will, after spinning the individual yarns, efiect the folding or doubling thereof to produce a two-ply thread or yarn, having also the novel characteristics hereinafter mentioned. Another object of this invention is to produce a machine thatwill make it possible to spin a given rade of material, as worsted, or other long bfer material, as distinguished from short fiber material, as cotton, into finer and smoother threads or yarns and re duce very materially both the time necessary for and the. cost of performing'the above operations.

This application is,in part, a continuation of my prior application, Serial No. 82,756.

The common practice, particularly in spinning worsteds is to pass the roving through the. several sets of drafting or drawing rolls to reduce it to the desired size for, the final drawing through the rolls upon the usual spinning frame, from which it is led directly to the bobbin, the spinning twist being put into the single strand as it is wound on.

a twisting machine. where two or more ply yarn.

a second roving composed of relatively long the same machine, the twistin bled multi-ply yarns being e ected preferably between the pot eye or guide and the The bobbins are then frequently removed to During the assing of the roving, from the delivery set 0 drawmg or drafting rolls on the spinning frame to the bobbin, the drafted roving, by the usual method, is subjected to quite a severe pull or drag whichlimits the degree of fineness to which a given grade of arncan be spun, on account ofthe' possibility' ofa single roving having too few fibers or serrations to bear the strain or s0- called drag when an unusually fine thread is desired.

Hence, in order to spin a finer thread or yarn than is now possib if of low grade fibers, and I use the words threads and yarns generically and intere from a given grade of wool,xor other material, and particularly ch'angeably herein, 1 have conceived the idea of reducing the length ofthe spun yarn subjected to the dra during the spinnin of the same, and of iringing to twisting, during the progress of t e' rovings from the drafting rolls to the single bobbin, of a plurality of spun threads or yarns, the doubling twist of the multi-ply thread or yarn running inthe same direction as the spinning twist of the vindividual yarns. By this method I practically blend the spinning operation into the doubling operation upon of the doubobbin where the yarns undergo the greatest strain.

.Forthe purpose of aiding a clear understanding of my invention, I have shown in etner an Fig. 2 is a plan. of'the same, parts being broken away, and 1 Fig. 3 is a detail of the pressure means for-the drafting rolls.

Fig. 4, a plan view of a conventional form of traverse construction for controllin the planes of'travel of the rovings through the drafting rolls andthe planes of travel applying from the front drafting rollsand y Fig. 7, a modification of the arrangement I of drafting rolls hereafter to be described.

Referring tov Figs. 1 and 2, the present embodiment of my invention comprises the usual roll stand 1,,herein supported on the beam 2, and having the usual thread guide or pot eye 3, in the thread guide board '4, carried by the bracket 5.

The roll stand carries at its forward end, and suitably mounted therein, on one shaft 6, the lower, steel, fluted drafting rolls 7,- 8. Above the same and supported by brackets 9 on the stand 1, on a single shaft 10, arev upper, front drafting rolls 11, 12, which may also be of metal and preferably leather covered, an upper and lowerroll, constituting a pair, the two pairs comprising what I term for convenience, a set.

In order to obtain the required pressure on the upper front rolls, I provide Fig. 1 the usual horn 13 which may be upwardly and forwardly extended from the front end of the roll stand or other convenient support.

This horn is notched or apertured to receive the lower upturned end of a hook 14, the upper end being received-by a saddle 15 resting on and over the shaft 10. The hook 14 is threaded at its upperend and provided with a wing nut 16 and a coil spring 17, by means of which a yielding pressure of de sired degree is maintained on the rolls 11, 12.

Back of the lower front rolls, Figs. 1-2, and at a suitable point on the roll stand 1, are positioned what may be called the lower forward carrying rolls or bosses 18, 19 of steel on a shaft'19 having reduced ends 20,

and Fig. 2 upper forward carrying rolls 21, 22, of wood, having gudgeons 2323 received in bearings 24, spaced from the rolls 18, 19, sufficiently to permit the rovings to be carried freely by them.

Adjacent these rolls, and mounted in similar but movable roll carriers or bearings 26, 27 are Figs. 1-2, what I term intermediate similar lower carrying rolls 28, 29, as of steel with reduced ends, 30 and Fig. 2, upper intermediate wooden rolls 31, 32 having gudgeons 3333, spaced sufficiently from the rolls 28, 29, to permit the rovings to be carried by them. The carriers 26, 27 for these rolls have each a depending arm 34 which extends through a slot 35 in the top of the roll stand 1, the lower arm ends bein turned up to receive each, one end of ashaft 36 carrying on each end apinion 37 in mesh with a rack 38 on the lower face of the stand 1.

The shaft 36, by means of a crank on one end, not shown, may be rotated to move the Fig. 6, an end elevation from the right} 'vention disclosed herein,

carriers 26, 27 toward or from the forward carrying rolls 21, 22, as may be required for the particular work in han Adjacent the carriers 26, 27 Fig.2 and properly positioned with respect thereto is one novel feature of my invention, viz, a set rolls 42, 43, respectively fluted, with reduced ends 44, all Fig. 1, in a carrier 45v similar to the carrier 27, with an arm 46 and pinion 47 on shaft 47 also in mesh with the rack 38. This carrier also has a pressure rod 49 threaded at its upper end to receive a wing nut 50and spring 51 by means of which, and a saddle 52, the upper rolls 38, 39, are given the proper pressure upon the rolls 42, 43.

The pressure roll 39 and drafting 1'011'38, I

are of the same diameter and contact with the lower rolls 42, 43,'while the carrying roll 40 is of less diameter and does not contact with roll 43.

Near the rear, or upper end of the roll stand is a second novel feature of my invention, the set of rear, combined long-fiberdrafting, pressure and carrying rolls, or bosses, comprising the upper carrying roll 54, pressure roll 55 and drafting roll 56 on the same shaft 57, and below and on one shaft 58, the two fluted lower steel drafting and pressure rolls or bosses 59, 60. As in the case of the rolls 38 39, 40, the pressure roll 55, and drafting roll 56, are of the same diameter and contact with the rolls 59, 60, While the carrying roll54 is of less diameter and does not contact with roll 59. I have heretofore referred to the drafting rolls-as being preferably made of steel for the rea-.

son that such is the practice at the present time, but obviously the material of which they aremade has no bearing upon my inand the rolls may be made of any suitable pelrlform the functions required of drafting ro s.

When drafting long staple material, Fig. 2, as long the roving a, it is drafted from roll 56 to roll 12, the roll 40 being smaller in diameter that the roll 38*, )ermitting the roving a, to pass under it an upon the roll 43, the rolls 40, 43, acting as carriers. The shaft 41, however, is provided with the pressure roll 39 g referred to, to engage the lower roll 43 and retain the rolls in proper position. If one wishes to'use with the roving a of long fiber material, a roving composed of short fiber material and, to simultaneously draft a roving of short fiber material, as short fiber wool, however, the distance between material that will" fiber wool, represented herein by one pair of the front drafting rolls and their 54 and lower roll 59 beneath it.

cooperating drafting rolls must be shortened, for instance, a short fiber drafting roll 38*, already referred to may be used intermediate the rear carrying roll 54 and front drafting roll 11, the short fiber drafting roll thereby becoming, in effect, the rear drafting roll, and means provided for carrying the roving freely to the short fiber roll.

In the use of the words long and short with reference to the length of the fibers, it will be understood that they are merely relative terms and have no specific commercial significance.

To that-end, Fig. 2, I have constructed roll 54, as stated, of smaller diameter than 56, permitting thereby the roving b of short fibers to pass freely between the upper roll The roll 38* is of proper size to engage roll 42 and act as a draftingroll, and when the roving b of short fiber material reaches it the roving will be drafted between rolls 38 and 11.

In Fig. 2, the line b, as stated, represents the roving of short stable fibers, running freely beneath roll 54 and being drafted from the roll 38 to 11; while the roving of long staple fibers is represented by the line a, which runs freely beneath roll and is drafted between rolls 56 and 12. In such I case the rear drafting rolls 38 and 56 would be of non-uniform distances from the front rolls.

The two rovings therefore may be spun in any desired manner with any desired ratch (or spacing of drafting rolls) and vdraft, by means of the rack and pinion adjustment. Of course, if it is desired to draft two rovings of fibers of equal length in the usual manner, the top rear carrying roll 54, pressure roll 55, and drafting roll 56, and top intermediate drafting roll 38% pressure roll 39, and carrier 40 are removed. Upper drafting rolls 56*, Fig. 7 similar to 56, are substituted for rolls 54, 55, 56, and conventional carrying rolls 31, 32. similar to 31, 32', maybe substituted for rolls 38 39 and 40. lhe back drafting rolls and carrying rolls, as required, are then spaced from the front drafting rolls according to the length of fibers to be spun.

in the foregoing description I have referred, for convenience, to the separate bosses on, the same shaft as separate rolls,

even when they are fixed on the shaft.

Referring to Figs. 1' and 2, the rovings a and 7) are shown as being fed from the forward or delivery set of these rolls 7-, 8, to a single guide 3, or obviously two guides side by side might be used intermediate the vertical planes of the roving a, b, on the rolls 7, 8, from which they are carried to and wound on the bobbin '61.

To form. a multi-ply yarn with the characteristics hefeafter described, the yarns a,

b, are doubled at or near the guide 3. Obviously, by bringing together and twisting the yarns a, b, at the guide3, the strain usually imposed on each yarn by the ordinary method of spinning between the guide 3 and the bobbin 61, is borne by a multi-ply yarn, and the strain on the individual yarns being thus reduced, each may be individually spun finer, with a resulting finer product when twisted with the other yarn. This novel. construction therefore permits the spinning of a finer yarn from a given fiber than is now possible. may be provided with any suitable device for determining the planes of the line of travel of the rovings between the rolls and the angularity of the planes of travel of the rovings from the front drafting rolls to the guide, such-as a traverse, and in Figs. 4, 5' and 6, I have illustrated one conventional form of such construction.

The lower rear roll 60, Figs. 4, 5, is provided near its longitudinal center with a worm 61 in; mesh with a worm gear 61 on the shaft 63 onthe ribbed support 64 of the frame 1. The rear end of the shaft63, Fig. 4, carries a cam 65 which rotates between and in contact with two rolls 66, mounted inbrackets 67 on the traverse 62. Upwardly The spinning frame roll 60 rotates, it will, through the connections described, cause rotationof the cam 65 and this, in turn, will impartreciprocating motion to the traverse 62 by means of the rolls 66.

As the rocking of the traverse 62 shifts ;the rovings a, 5, back and forth in the usual manner longitudinally of rolls 54-, 56 and changes'the angularity of the feeding of the rovings, it will be evident that this shifting results in making each yarn a, 6, between the rolls 11, 12, and the guide alternately the long and short one of the two, as it is spun, according to the position of the traverse and the yarnsbetween the drafting rolls and the guide 3. As shown, F ig.-2, the yarn a, is the short yarn of the two, and the yarn b. is the long one.

Obviously the traverse action can, if desired, be modified by properly controlling the action of the same, or even. suspended temporarily, as by removing one of the rolls 66 from contact with the cam65 or by adjusting its position relative thereto so that the harder spun end of a section of one yarn will be folded with the harder spun end ofa section of another yarn in the completed or multi-ply yarn; or so that the sections may be omitted or spaced farther apart in either shown in Fig. 2, will be twisted to: a greater extent between the roll 12, and the guide 3,

than the long yarn b, if the fibers composing the two yarns are of substantially the same twisted to a greater extent while it is the short yarn than the yarn a, at that time the long one; this greater or harder twist being a progressive condition varying in degree as each yarn gradually becomes first the long and then the short one of the two: I

This shifting or changing of the angularity of the feeding of the rovings and yarns simultaneously with the spinning action, obviously produces in the individual yarns, as they are spun, alternate lengths or sections of what are oppositely, progressively, hard and soft twisted material; that is, the section of a given yarn while it is the shorter one of the two, will be twisted harder at first and then progressively softer as it becomes first of equal length with, and then longer than its mate, while the following section of the-same. yarn will be twisted progressively softer while it is the longer of the two yarns and progressively harder during the time that it is gradually'becoming the shorter of the two yarns. j

It. will also be evident, that the bringing together-at or near the guide 3 of the two oppositely, progressively, hard and soft twisted yarns, will result in the hard twisted end of one section of one yarn being folded with thesoft twisted end of the corresponding section of the other yarn; while the soft twisted end of one section of the first yarn will also be folded and twisted with the hard twisted end of the corresponding section of the other yarn, producing a-two-ply yarn of substantially uniform size, and relatively finer than any two-ply yarn that can now be-produced by the common methods of and machines for spinning. I am therefore able, by my novel method and machine for spinning to spin a plurality of rovings into substantially complete threads oryarns, and

i then twist or double the individual rovings previously spun and twisted, both the spin-1 ning twist and the twisting twist being effected in the same direction, and producing.

a multi-ply yarn or thread assoft as a thread or yarn now produced by tlrelcommonmethods and machines. 7

If yarns of substantially unequal length of fibers are used, the yarn having the longer fibers naturally takes more twist than its It therefore follows that although yarn will have alternately progressive sections of hard and soft spun yarn, and willbefolded with the oppositeyarn so that the folded sections have opposite progressions,

yet with yarns of substantially unequal fibers the point of extreme softness of twist in a .the drafting rolls, and no sections of progressively hard and soft twisted yarn, the guide 3 is an important element.

Obviously,-in order to obtain the full effect in each yarn of the traverse action that is, the

controlling of. the angularity of the planes along which the yarns are fed to the guide3,

it is necessary that the two yarns be re- "strained in some manner so that they cannot ,follow freely the traverse action back and .forth.

rolls, approximately three inches'apart, and

between the planes of travel of the two rovings between the, rolls. v The guide being fixed between these planes of travel, it prevents the doubled yarn from moving laterally with the traverse to any appreciable extent, and thereby ensures the individual, undoubled yarns partaking'of the motion ofthe traverse to produce theresult desired. Obviously, if the doubled yarns were not restrained as by the guide 3, they, too, would partake of the motion of the traverse to such/an extent that each of the undoubled yarns would be always substantially of the as v same length between the doubling pointand ing action would be effects lt is, moreover, desirable for the strength of the yarns that each, be spun until it is substantially a com le'ted yarn before it is doubled with the ot er yarn or yarns. To accomplish this object, that is, control the angularity of the planes of travel of the rovings afterthey leave the drafting rolls, the doubling point of the yarns must be retained at a suflicient distance from the drafting rolls to permit the necessary separate twisting of the individual yarns, as already stat, ed. Obvioiisly, the nearer the doubling point of the two arms of the fork. of yarn approaches the bight line of the drafting rolls, the greater the amount of twist that is imparted to each yarn or each arm of the fork.

f In this case also, the angularity of the planes of travel of the rovings to the guide is partly controlled by the traverse action.

progressive twist-f Accordingly, it will be noted that the i itisdoubled with the opposite yarn. It Hwill be clear that thisseparate spinning of each-yarn could not be eitected'if the rovings were fed between the drafting rolls very near each other as, particularly if wool, they wouldrun together during the spinning action and would be doubled much nearer the drafting rolls than is the case according to my improved method.

lhe usual twisted multi-ply thread or yarn, made according to the common practice, must be twisted, when folded, in the opposite direction to the spinning twist, to keep it soft and pliable, because it twisted in the same direction as the individual threads were spun, (with the large amount of twist necessary to sustain the thread when traveling the distance to and being wound on the bobb n as a single thread) it would be hard to handle, and unsuitable for ordinary warp use; but the thread produced by 'my improved process, as stated, is soft and pliable although twisted in the same direction each time, and may be used 1n any case where such yarn is desired because of the lesser strain naturally imposed on the short length of single yarn which allows for a less amohnt of twist.

Another important advantage results from the use of my improved machine, and that is the production of a smoother thread. In spinning, the loose fibers of that part of each roving that is free, i. e., between the rolls 11, 12, and the bobbin, tend to fly outwardly, forming a thread with a rough surface or heard. ()bviously the fibers will be thrown out to a much greater extent under the usual method of spinning where the single roving is carried from the feed rolls 11,512, to the spindle,'owing to the greater distance between the two, than in the case where the single rovings are doubled at or near the guide, thereby shortening the length of the free threads from which the fibers may be" thrown out, to the distance between the rolls 11, 12, and the guide 3.

After reaching the "guide, the several yarns being twisted about each other, each acts to prevent the throwing out of the loose fibers or heard from the other, as now happens, and the result is that the yarns brought together and twisted by my improved machine, have a very much smoother surface than yarns first spun and then again twisted in the opposite direction by the present method and spinning and doubling machines. The fact that by my novel machine the spinning-twist and the twisting-twist are edected in the same direction, facilitates this result, because, as now practiced, the spinning-twist in the thread is taken out to some extent by the effecting of the twisting-twist in the opposite direction, thus permitting the fibers to be loosened and thrown out somewhat during the secondtwisting or doubling.

By my improved machine the step of doubling and twisting, as a separate step in the. production of multi-ply threads is entirely eliminated, because such operatiohis efi'ected simultaneously as one operation with the initial spinning. It will be evident that my improved machine results in a very large reduction in the cost of the socalled spinning operation, owing to the fact that the number of spindles is cut down 50%, together with all the parts necessary for the operation of the same, including the tension .tape band, etc., tin separators are not needed, and the. labor, including dofling, is reduced by 50%. The number of delivery rollers is not reduced, nor is their output. On the contrary, the speed of the spindles may be reduced, saving wear and tear, and the speed of the delivery rollers increased because the output of the latter may be increased with the de-. crease in speed of the spindles, and the degree of twisting efi'ected. I

Furthermore, after spinning and twisting the thread by the common machines, it is subsequently wound from one or more bobbins on to a lar e spool or container known as a package, cw ich is too largeto be used economically on a spinning frame, because its use would necessitate placing the spools mil so far apart as to reduce materially the number of them that could be used in a'given floor space. p

By my improved spinning and twisting machine, more room is naturally provided on the machine for each bobbin, thus leaving room for the use of an enlarged bobbin or package on which the spun and twisted yarn can be initially wound, thus materially reducing the cost of 'subsequent winding operations.

By means of my improved spinning and doubling machine I am able also to practice economy in the formation of a multi -ply yarn by the use'o'f both lon material where such a combination is desirahis. in fact, the multiply yarn comprising both long and short fiber material that is spun and doubled on my novel machine, is a flit) and short fiber are 1y 's an. and doubled asdescribed herein or in t e'common manner.

While machlnes have been devised which attempt to simultaneously impart a spinning twist to individual threads and subsequently a twistin thereto in the opposite direction,

in them on acontainer, all as one operation.

y invention is not limited to the particular embodiment thereof illustrated and detill scribed, but its scope is ratherdetermined by the claims.

Claims:

1. A spinning and doubling machine comprising two or more pairs of drafting rolls, a traverse and a bobbin between two vertical planes across the axes of any two pairs of rolls.

2. A machine for simultaneously spinning a plurality of yarns separately to substantial completion and twisting them together in thesame direction as the spinning twist comprising front drafting rolls, cooperating drafting rolls at non-uniform distances from the front rolls, a guide between the planes of travel of the rovings on the rolls and substantially at the meeting point of the rovings. to fix the angularity of the planes of travel of the yarns, a traverse to move the rovings laterally on the rolls to cause 'each roving to become alternately lon er and shorter than its mate between the gui e and the front rolls.

' 3. A machine for producing a separable, multi-ply yarn, each ply having progressively hard and soft spun sections therein, comprising drafting rolls, a guide within'the planes of travel of the rovings on the rolls,

and a traverse to determine the angularity of the planes of travel of the rovings and cause eachto become alternately the longer and shorter of" the two, relative to the guide.

A spinning and doubling machine comprising front drafting rolls and cooperatingjdrafting rolls at non-uniform distances from thefront rolls, means to control thev angularity of the planes of travel of the rev ings, and bObblll ifOl" simultaneously spinning and doubling rovings-of different length fibers.

5., A spinning and doubling machine comprising front drafting rolls, a set of cooperatmg intermediate drafting, pressure and carrying rolls, the lower rolls of this set being of the same diameter, and a set of rear misses carrying rolls, thelower rolls of this set being of the same diameter, and a set of rear combined drafting, pressure and. carrying rolls, the lower rolls being of the same diameter, the drafting and carrying rolls being of different diameters, and a common guide for all the drafting rolls.

A spinning and doubling machine comprising means for drafting a'roving of long fibers and separate means for drafting simultaneously a roving of relatively shorter fibers, a common guide therefor, and a common spindle for imparting the spinning twistand the doubling twist to the yarn in the same direction, and means for feeding a plurality of rovings simultaneously and at different angles to the guide.

8. A spinning and doubling machine comprising front drafting rolls, a setof intermediate rolls comprisinga pair of drafting rolls and a pair of combined pressure and,

carrying rolls, and a set of'rearrolls comprising a pair of drafting rolls and a pair of combined pressure and carrying rolls, a pot-eye between the front drafting rolls, and abobbin, whereby a roving of fibers of given length maybe drafted between the front ditional pairs being at non-uniform distances from the said set;

v 10. Spinning and doubling mechanism comprising in combination a plurality of pairs of drafting. rolls, adjustable in pairs to draft simultaneously rovings-of different length fibers, and a guide between the paths of travel of the rovings. 11. A. spinning and doubling machine comprising a plurality of pairsof drafting rolls, each pair comprising an upper and a lower roll, a plurality of pairs of drafting rolls in the rearof the former pairs and in operative alignment therewith, and means forpositioning the rear pairs at relatively difierent distances respectively from and in independently operative relation to the cooperating front pairs. v

12' Spinning and doubling mechanism comprising a traverse and a plurality of pairs of drafting rolls at non-uniform distances from each other and so positioned as to distance one from another as to permit simultaneous drafting of rovings of different length fibers.

13. spinning and doublingmachine comprising a plurality of pairs of drsft= ran unease ing rolls in substantially axial'alignment, a pot-eye in a plane between the adjacent ends of two pairs, and a traverse for changing the angularity of feed of the rovings whereby 14. A spinning and doubling machine comprising a set of drafting rolls, a pot-eye located in a plane between adjacent ends of said rolls, and a traverse whereby the rovings may be moved simultaneouslylaterally relative to the pot-eye to cause each roving to become alternately longer "and shorter than its mate andthereby produce in each roving a succession of progressively hard and soft spun sections, and the rovings subsequently folded and twisted together in the same direction as the spinning twist,

15. A spinning and doubling machine comprising a set of drafting rolls. a guide.

in a plane between the adjacent ends ofsaid rolls, and a traverse for feeding the revings to a common guide while imparting a spinning twist thereto in a regularly progressive and alternately increasing and diminishing degree and doubling the spun rovings in the same direction as the spinning twist.

16. A spinning and doubling machine comprising a set of drafting rolls, a single pot-eye in a plane between the adjacent ends of said rolls, and a traverse'for feeding a plurality of rovings directly and separately to and along planes of travel at unequal distances from the single pot-eye and simultaneously spinning each roving to a substantially complete thread as it is fed toward the pot-eye, subsequently folding the rovings near the pot-eye and tying down the free fibres of one roving while spinning the other roving about them.

17. In spinning and doubling mechanism,

the front drafting rolls 7, 11, 8, 12, a pair of intermediate drafting rolls 38, 42, cooperating with one pair of the front rolls, intermediate combined pressure and carrying rolls 39, 4f), 43: rear drafting rolls 56, 60, cooperating with a second pair of the front rolls. and combined pressure and carrying rolls 54, 55, 59. at a; greater distance from the front drafting rolls'i. 11, 8, 12, the guide 3, succeeding said rolls and the traverse 62 to feed a plurality of rovings along first parallel, and then angularly changing planes to the drafting rolls and the guide 3.

18. Spinning and doubling mechanism comprising the front drafting rolls 7, 11, 8, 12, reardrafting rolls cooperating therewith, intermediate drafting rolls also cooperating therewith, the guide '3 succeeding said rolls, the roving traverse 62 to feed the rovings intermittently along diftwist to the rovings.

of the planes of travel of the rovings to the guide, whereby rovin s 'of different length fibers may be simu taneously spun and doubled.

19. Spinning and doubling mechanism comprising a plurality of pairs of drafting rolls adjustable in pairs to draft simultaneously rovings of different length fibers, a guide so positioned respecting the drafting rolls as to'determine the angularity of feed of the rov'ings' and effect the simultaneous imparting of the spinning and doubling 20. A spinning and doubling machine comprising means for drafting a roving of longfibers. means for drafting simultaneously a roving of relatively shorter fibers, a

common guide, and means for controlling the angulari ty of the planes of travel of the rovings to the guide, and a common spindle for simultaneously spinning and doubling rovings of difierent length fibers.

21. A spinning and doubling machine comprising'means for drafting a roving of ling fibers, means for drafting simultaneously a roving of relatively shorter fibers, a common guide, and means in front of the drafting rolls for controlling the angularity of the planes of travel of the rovings to the guide, and a common spindle for simultaneously spinning and doubling rovings of difi'erent length fibers.

22. A spinning and doubling machine comprising means for drafting a roving of long fibers, means for drafting simultaneously a roving of relatively shorter fibers, a common guide, and means in the rear of the drafting rolls for controlling the angularity of the planes of travel of the rovings to ,the guide, and a' common spindle for simultaneously spinning and doubling rovings of different length fibers.

23. In a spinning and doubling machine, a shaft having a plurality of complete rolls or bosses thereon, the diameters being of different measurement to permit the passage of certain rovings past the rolls or bosses of lesser measurement.

24. A spinning and doubling machine comprising one or more sets of drafting rolls, the pairs of the respective sets being at non-uniform distances from each other, a roving traverse, and a guide between two vertical planes across the axis of one of said sets of rolls. v I

25. A spinning and doubling machine comprising two end-wise abutting pairs of drafting rolls, a guide in a-plane between the outer ends of the airs, and a traverse to feed the rovings a ong changing paths to the guide.

26. A spinning and doubling machine comprising a plurality of pairs of front drafting rolls, a coon guide therefor,

ferent pathsan d' determine the angularity I 5 comprising means for drafting a roving of long fibers, m'eansfor draftmg simultaneously a roving of relatively shorter .fibers, and a common guide for both of'said drafted rovings s 28. A spinning and doubling machine comprising means for drafting a roving 0f 4 long fibers, means; for drafting simultaneously a roving of relatively shorterfibers,

and a commonbobbin to receive both of said drafted rovings. v

29. A spinning and doubling machine comprising means for drafting a roving of long fibers, means for drafting simultaneously a roving of relatively shorter fibers,

and a common guide and bobbin for the said drafted rovings.

In testimony whereof, I have signed my nameto this specification.

TOM FORREST.

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