US186322A - Improvement in ring-spinning frames - Google Patents

Description

Panenzeaun., 16, 1877.

TMP

N.PETERS. F'riOTU-LITMOGRAPHER, WASHINGTON. D. C.

l 4 Sheetf-Sheet 2.

W; E. DRAPER, l

nlNGsPINNING-FRAME.

' Patente Vfg-Q A.

E36., f5 j WQTM'Q?? Jew -4sheeps-sheet s.

W.: DRAPER. VRING SPINNING-FRAME.

Patented Jan. 415, A18:17.

N. PETERS. FHOTU-LITHOGRAPHER. WAS'HNGTN. D C4 ,UNHED 'Starts PrrrnlwrK current WILLIAM F. ADRAPER, OF HOPEDALE, MASSACHUSETTS.

IMPROVEMENT IN RINLG-SPINNING FRAMES.

Specication forming part of Letters Patent No. 186,322, dated January 16, 1877; application filed October 2, 1876.

varies `but little, and the twist per inch is nearly uniform, and consequently spinners have been able to put less twist in iillingyarns spun on the `mule than in yarns spun on frames, wherein the strain constantly y changes from the full to' the empty `bobbin,

this strain being greatest when the yarn is being wound upon the empty bobbin, where t there is less twist in the yarn to resist stretching or breaking the same.V

The twist put in` a given length of yarn spun on a ring-frame is equal to the number oi' revolutions ot' the spindle while theyarn is being delivered by the rolls, less the number oif times the yarn is wound around the bobbill, suitable allowance being made for the Y stretching ot' the yarn. A full bobbin 'is about one and one-halt' inch in diameter, and an Vempty one, as ordinarily made for filling, about tive-eighths of an inch, so that when the b obbia is full 011e 4turn of twist is lost to about four and onehalf inches, and when empty one turn to less than two inches. y l

In this my improved trame I make the bobbins about tive-sixteenths of an inch in diameter,or about one-halt' smaller, and on an ordinary frame such a bobbin would lose one turn in less than one inch.

This difference in strain or-draft of the traveler and in twist makes it necessary, in the lirst place, to put more twist into the yarn than is desired, and in the second place to use a bobbin with a comparatively large barrel, both ot'whicb are serious disadvantages; for hard-twisted filling makes hard, Wiry cloth, rough to the touch,and which, in dyeing, will not take color as well as cloth woven of softer spun yarn, and the bobbin with `large barrel, besides holding less yarn and unnecessarily increasing the Weight to be moved by the spindle and in the shuttle, makes it necessary to stop the loom ot'tener to replace shuttles, thereby losing` time and making mor-e imperfect places in the cloth than would be the case i'r the shuttle-thread were longer.

The mule spins lling slowly, requires eX- pensive help to operate it, and the cops pro- Y duced are liable to much waste in weaving.

The ordinary ring-frame, as described, puts in too much twist, and requires a large bobbin to prevent the yarn from pulling apart under the strain to which itis subjected when being wound upon the emptybobbin, and the frame cannot be run at high speed without breaking the yarn at the barrel of the bobbin, where the twist is least, and consequen tlythe yarn is Wound soft to decrease the strain thereon.

An ordinary lling-bobbin is provided at its lower end with a conical head, upon which the yarn is wound in successive layers of about the length of', andin line with, the surface of the cone, the diameter of each layer decreasing' from the diameter oi' the full tov the diameter of the empty bobbin, and vice ,t

In spinning, much the larger proportion of ends that break break nearthe bobhin. The difliculty arising from the drag 'ot' the traveler when the bobbin is empty or first beingl wound is experienced in ordinary ringframes, wherein the bobbins are wound with the warp-wind, or in successive layers, each ot larger diameter; but such ditculty has been nearly it' not quite remedied by inventions ot' George Draper, fully described in applications for Letters Patent of the United States, led September 22, 1876, wherein the action of the drawingrollers is least upon thc yarn as it is being wound upon the empty bobbin, and in patents Nos. 16,028 and 22,899, wherein all the rollers run slower when the bobbins are-empty, the spindles running at uniform speed, which results in putting more twist in the yarn when the bobbins are empty. Another application of George Draper goes yet further toward correcting these evils found in ordinary ring-spinning, and varies the speed of the front rollers with relation to the speedl of the back rollers and spindles, thereby regulating' the draft on the'yarn and varying' the twist, as fully described in such'application,

led September 22, 1876.

This application is an improvement based lupon the inventions described in the applications A B G of the said George Draper, filed as above stated, and to them reference may be had. J

In this myinvention I propose to. employ any of the inventions or devices of the said Draper or Smith for varying the speed of the rolls, using such devices, however, in connection with a spinning-frame having devices for winding bobbins with the lling-wind, the speed-changing mechanism being adapted to be changed during each complete rise or fall of the rail, one way during each rise and the other way during each fall .of the traverserail.

The speed-changing mechanism is connected with, and operated by, some moving part ofl the traverse, or other moving part of the frame, or through suitable moving devices that will cause the yarn to be coarsened or harder twisted, or both, at each rise and fall of the ring-rail, thereby making the yarn substantially equal in strength and twist at the bobbin, or increasing lits strength alittle be- 'yond actual requirements in spinning, to enable it to bear the extra strain at the barrel of the bobbin.

My invention, therefore, has reference to the combination, in a ring-spinning frame having a traverse motion to wind bobbinsl with the filling-wind, of spindles and drawingrollers with mechanism adapted to automatically change the speed of all the rollers with relation to the spindles, or to automatically change the speed ofthe front rollers, orof the back rollers, with relation to the other rolls and to the spindles during each complete rise and each complete fall of the traverse or ring rail, or lever of the filling traverse motion,

whereby, as the rail rises, there will bc -morestock or twist, orboth, put in the yarn at the roll, and when it falls there willbe less, for the purpose of equalizing the size, twist, and .strength ofthe yarn on the bobbin,the yarn being wound in layersrunning from the outside of the yarnload to the empty bobbin, and vice versa; also, in the improvement in the Vart or method of spinning, as hereinafter dethe relative speeds of the drawing-rolls with relation to the movement of the spindles, as herein set forth, of a cam to move the traverse faster inone direction than in the other, to bind the yarn,`as herein set forth.

Figure 1 in the accompanying drawings represents, in side View, sucient of a ringspin ning frame to illustrate my invention; Fig. 2, an end view; Fig. 3,'a section through one form of speed-changing gear as applied to change the speed of all the rolls with relation to the spindles at each rise and fall of the rail. Figs. 4 and 5 are portions thereof. Fig. 6 is a section of one form of speed-changi'ng gear, applied, in this instance, to increase and decrease the speed of the front rollers at each rise and fall of the ring-rail. Fig. 7 is a modification of speed-changing device to gradually change the speed of the front rolls, or all the rolls, at each traverse. Fig. 8 is a View of a modified form of another arrangement of devices to gradually change the speed ofthe front rolls, or all the rolls, lat each traverse, the view being a section taken from the inner side of the frame on lineas Fig. 9; Fig. 9, a View from the side of the frame, showing the gear shown in Fig. 8; Fig. 10,

a detail showing connection of back and.

front rollers; and Fig. 11, a bobbin. Figs. l2, 13, 14, 15, 16, and 17 represent modifications of the invention, wherein the speed of the back rollers is varied duringeach complete rise and each complete fall of the ringrail.

In an application (Gase C) ii-led September 22, 1876. and made by Geo. Draper, there is shown and described a mechanism (a fast and slow speed pinion) to vary the speed of the back rollers as the vbobbins are being wound after the manner of the warp-wind. 1n this present application the speed of the back rollers' may also be varied with relation to the front rollers and spindles, as described in such Geo. Draper application, (Case C 5) but the change of speed will be made to take place during each complete rise and each complete fall of the ring-rail, the speed of the back rollers being decreased as the yarn is being` wound from the small to the large part of the bobbin, cop, or spindle, and increased when being wound from the large to the smaller portion of the bobbin or cop. l

Fig. 12 shows in top view, and Fig. 13 in front View, one plan for changing the speed of the back roller, in connection with a ringframe forspinning filling, at each rise and falli of the ring-rail. In such guresthepulley 3e on shaft 5 derives motion through a belt, or otherdriver, `connected with the` main shaft.

A `toothed pinion on shaft 6, through an. idle-pinion, o, moves gear p on shaft q of the front roller, and drives it at a uniform motion. The front roller-shaft q (see Fig. 13) is .provided with a long pinion, m, that engagesthe teeth of toothed rings r s of a variable-speed pinion, or differential gear, adapted `to operate a pinion, t, that engages a larger pinion,

wo, on the shaft of the back roller b. This.

roller b,at its other end, is provided with a pinion, 8, that engages an idle-pinion, 9, that, in turn, engages pinion 10, and operates the intermediate rollers c.

The variation` in peed between the back and front rollers lstmade through a variablespeed pinion, which actsl as an intermediate gear between the. gears on the front and back rollers.

Fig. 14 represents this variable pinion in section.` Its stud al, secured to thestand b1, sustains the quillcl, about which are arranged the toothed rings or wheels r, s,\and t. The toothed Wheel t is fixed to the quill; the toothed ring orpinion s is looseon the quill, but its face, as` shown in Figs. 14 and 16, is provided with notches dl, (any suitable number,) to receive a piu, el, connected with, and

i so as to be moved by, a sliding collar, f1, provided with la cam-face, gl, adapted to be moved laterally, to Withdraw` the pin from the wheel s, by the action ofthe lever or arm` 11, before described, but changed in position. (SeeFig. 17.) The pin and collar are moved in the opposite direction by a spring, h1, connected therewith, as shown in the drawings.

The part 61 of the quill c1 has an opening, 62, to receive a friction-roller, 63, preferably thrown into the smaller portion of the opening 62 by a spiral or other spring, 64:, that i presses against a shoe, 69. This part 61 of the quill has also a slot, 65, through which passes the pin e.

The toothed rim o', orslow-speed pinion, is mounted upon tliisenlarged portion 61 of the quill, as shownin Fig. 15, and hasat its periphery more teeth thanhas the periphery of toothed rim or wheel s, the fast-speed pinion. In an ordinary-sized spinning-frame,` rim r will have about ninety-six teeth, and rim or wheel s about eighty-seven teeth. The exact number of teeth depends upon the difference in speed it is desired to produce between the front and back rollers, this depending upon the roving and size of the yarnto be produced, andthe amount of drag.

The teeth of rims or wheels rs are engaged by the pinion m on the front roller. When the pin el is withdrawn, as shown in Fig. 14, toothed wheels is liberated, leaving it free to turn under the action of pinion m, Without liioving any other part;` but the toothed rim fr, acted upon by the pinion m, causes the` roller 63 in thepart 61 to move forward into.-

1 decreased.

ing 62.

`rise and fall of the ring-rail. the backrolls may be varied by any of the other forms of devices shown in the said Geo. Drapers application C.

i thesmallestportionof theopening 62, in which position it wedges between the riinr and quill, and the rim then moves the quill and pinion t, that operates the back rollers.

When` the pinion t derives its motion from the toothed rim r, as when the pin el is withdrawn, the speed of the back rollers is When the pin e1 is` in engagement withl the toothed wheel s, then the quill is Adriven positively-through wheel s, andl the pinion t` drives the back` roller at its fastest speed. The hub moved through the fastest wheel s travels faster than the rim or wheel r, and consequently the cylinder or roller 63 falls into the enlarged portion of` the `open,-

When the yarn is being wound upon the smaller portion of thev bobbin or spindle the pin e1 is inengagemeut with the toothed wheel s of leastteeth, `the back rollers then moving at` their fastest speed; but at the proper time during the descent of thering-rail, the yarn` being then wound Aupon a surface increasing in` size,.the pin e1 is withdrawn, thereby permitting the toothed rim r to operate and drive the back rollers at a slower speed.

lThe fast and slow speed pinion (described` in Figs. 12 to 16) may be thrown into and out of operation. at the proper time by the lever 11, to operate the collar in Figs. 12 to 16, it

being extended substantially in a vertical direction from the shaft w3, (see Fig. 17,) worked at the proper time through lever 14 and the traverse-lever 15, (fully shown in Fig. 2, and hereinbefore described) or by other suitable moving part of the machine or shaft adapted to operate the arm 11, to lock and unlock the gear at the proper times during each complete The speed of The drawing, Figs. 1 and 2, shows two formsV or plans of my invention. In the rst plan the speed of all the rollers is changed with relai tion to the 4speed of the spindles at each complete rise and each complete fall of theringrail or traverse, and in thesecondthe speedv of the front roller` is changed with relatiouto the speed ofthe back rollers and spindles at each complete rise and each complete fall of the rin g-rail. or traverse.

In this application I `designate parts like those in the George Draper applications by like letters. The first plan will be first described. v

The frame of the machine, the ring-rail g, and devices t' j, for lifting it, bolsterrail` f, spindles e, bearings and drawing-rollers b c d, are all of usual construction. rIhe spindledriving drum lc, operated in any usual way,

has upon it a broad-toothed gear, a2, that en- `on the shaft 20, provided with a traversecam,

c3, that, operating against the pin 18 of the Ltraverse-lever 15, pivoted at 41, operatessuch 4 leases lever, and it, through its connections dz j e2, liftsand lowers the ring-rail at each revolution of the cam. This cam c3 is preferably shaped as an irregular heart-calm7 so as to permit the rail to fall faster than it rises, so that, as the rail falls, the winding of the yarn will be somewhat elongated to bind thecop, as is well understood.

The rack 16 upon the traverse-lever is moved by the screw 17, operated in any usual way, the movement of the rack upon the lever shortening the connection cl2, and causing the ring-rail to be lifted each time a little higher,

and permitting it to descend each time not4 quite so low, but without altering the length of the traverse, as is the well-understood practice in'winding bobbins with the filling-v wind. This broad gear a2 also engages the teeth of the fast and slow speed gear s r, substantially such a gear as is shown in Figs. 9,

10,11 ofGeorge Drapers application, (Case 0,)

filed September 22, 1876, wherein the coilstruction of the fast and slow speed pinion is 'fully described, and also in Fig. 3 of thisrpresent application.

This gear may be described as follows: A quill, 6l, sustained in a bearing,f2, has attached to it a toothed wheel, t, that is to be moved at different velocities by means of either the fast or slow speed pinions s r, driven by the toothed gear a2, connected with the drum-shaft. The slow-speed pinion r, having the most teeth, is made as a ring litted to an enlarged portion of hub 61, the hub being provided with a recess, 62,' to receive a frictionroller, 63, pressed forward into the smallest portion of such recess by a shoe, 69, acted upon by a spring, 64. The fast-speed pinion s, having the least teeth, is also arranged upon this quill, and has several notches, d1, to receive a pin, el, connected with a sliding collar, f1, mounted upon the quill. The pin el extends through a slot, 65,-in the quill 6l,

anda suitable spring (herein shown as h1) acts to move the collar and pin, so that the pin engages the fast-speed pinion s.

When the pin e1 is withdrawn, as shown in Fig. 3, toothed wheel s is liberated, leaving it free to turn under the action of toothed gears a2, without moving any other part; but the toothed rim W', acted upon by the toothed gear a2, causes the roller 63, carried by the quill 61, to move forward into the smallest portion of the opening 62, in which position it wedges between the rim r and quill, and the rim thenv moves the quill and pinion t, that, through gear q2 h2, (see dotted lines, Fig. 2,) operates the gear i2 upon the'shaft ol' the front roller d. p

When the pinion t derives its motion from the toothed rim'r, as when the pin el is withdrawn, the speed oi' the rollers will bethe slowest. When the p'in e1 is in engagement with the'fast-speed pinion or toothed wheel s, then the quill will be driven positively through Wheel s, and the pinion t will drive the roll` ers at their fastest speed. The hub, moved through the fastest wheel s, will travel faster pinion, m2, upon the back roller, (see dotted lines, Fig. 2,) and the back roller, at its other end, will be provided with a pinion, 8, to engage an intermediate, 9, to operate a pinion, 10, upon the shaft of the middle. roller c. In this lirst plan, the front roller may be geared, in any way common to ordinary ring-frames, with the back roller, and with the middle roller c.

Instead of changing the speed of the rollers during the time that the bobbins are being lilled, as is-the ease when bobbins are wound with the warp-wind, I change the speed during each complete risel and fall ot" the ringrail. When the traverse-lever descends the ring-rail rises, and vice versa.

In the drawings, Figs. 1 and 2, the traverselever is shown at its lowest position, and in such position the ring-raill would occupy that position of elevation in which the traverselever at that stroke would place it, this depending upon the length of the connection.

In the drawing I have not attempted to place the ring-rail in its exact position, as any person skilled in the art will fully understand the correct position for such rail.

The collar fl is operated to withdraw the pin el from the fast-speed pinion by means of an arm, 11, adapted to be moved into a position to engage the collar and pinion r, enterj ing, for instance, between the collar and pinion r, or between it and the part 67 of the quill 6l, as in Fig. 3. This arm 11 projects from a shaft, w3, having a short arm, r3, to which is connected the lever 14, provided with a suitable projection, t3, to rest upon the traverse-lever 15, (or it may be upon any other moving or running part of, or in connection with, the frame vsuitably timed with the traverse,) the traverse-lever or other moving part raising the lever 14, a suitable spring, a2, lowering it. When the traverse-lever l is at its lowest position', as'shown in the drawings, the

-is in its elevated position for the empty bobbin or smallest part of the cone to'receive yarn, and the slow speed of the set of rolls then results in increasing the twist.l The arm 11 is stopped in its descent by the collar or quill 61. The pin t3, Figs. 1 and 2, on the lever 14, does not rest upon the traverse-lever 15 when the latter is in its lowest position and the ring-rail is in its highest position. As the traverse-lever rises and the ring-rail falls, the

When the slow-- `laisserai: 5

traverse-lever meets-` the pin t3 on V,the lever 14 and lif'ts the arm 11, permitting the pin e1 to engage the fast-speed pinion, and then the speed of the set of rollers is increased to decrease the twist in the yarn, the latter then being wound upon the larger portions of the cone. The change of speed is eiected when the ring-rail moves down about one-third .or one-half the distance of its traverse, and the fast speed of theset of rollers continues until, in again rising, the ring-rail reaches a point half or twothirdsup, when the slow-speed pinion is again permitted to operate the set of rollers. A

It is obvious that the time at which this `change of speed takes place may be varied by changing the position of the pin t3 upon the lever, such `pin being 'preferably made adjunstable in any well-known way. i

In the second plan of this my invention `(see the left-hand side of Fig. 2 and front of Fig. 1) the fast and` slow speed-pinion, or speedchanging gear, is placed in connection with the shaft `of the front roller, substantially as shown in Fig. 12 of the application (Oase C) of the said George Draper.

The operation of the fast andslow speed gearingin this plan may be fully understood fromthe sectional Fig. 6. In this second plan the speed of the front roller is to be varied (in this instance increased) with relation to 4the speedof the back rollers andspindlesat each downward movement of the `ring-rail, and decreased at each upward movement thereof, instead of once during the winding of the bobbins, as when the bobbins arewound after the manner of the warp-wind. In Fig. 6 the fast and slow speed pinions r s are placed outsidethe frame. Pulley 3 is provided with a pinion, 6, having a broad face capable of engaging the teeth of rim r and wheel s, as inthe case of pinion a2,.beforede scribed.

Toothed wheel s in this modification `has a said George Drapers application, (Gase C.)

The quill c2 in Fig. 6 is connected positively i with the extended shaft of the front roller d,

it being provided with an opening, 62, a roller, 63, and a slot,65, for pin el, the rim lr moving thereon, all as shown in Fig. 3. When yarn is being wound uponthe'barrel of the bobbin 0r` cop-tube, the pin el is Withdrawn, and the slow-speed pinion or -rim r then drives the front roller at its slowest `speed-the toothed wheel s, alsomoved by the pinion 6, through its sleeve 71 and pinion 72, movingthe back rollers. When the speed of the front rollers is to be increased with relation to the speed of the spindles and back` rollers, the pin e1 is moved so as to engage the fast-speedfwheel s, and then the front roll is moved through the y medium of the pinion s, and at a faster speed y than when moved by rim or pinion r. In this case, however. the fast-speed pinion yet continuesio move the back rollers at the speed at which they were moved when the front rollers were moved by the rim r. When the slow-speed pinion operates the front roller, the yarn to be wound upon the barrel of the bobbin is coarsened and the twist is increased,

to compensate for the action of the drag of .the traveler and the loss of twist, as before explained. When the rin g-rail descends about one-third or one-halfits traverse, the traverselever, operating upon the lever 14, as before described, will move the shaft a2, and theA stance, from a band, o2, on a pulley, 1, of shaft 4. A ring-spinningi'rame embodying this `my invention,adapted to spin filling, will perform,

substantially, fifty per cent. more Work than aA mule, because in `my frame ,the motions are continuous; and as I am enabled to wind the yarn very firmly, there is little if any copwaste in weaving, which, in some mills, amounts to about two dollars per annum for each loom operated. As compared with other or ordinary ring-spinning frames,this frame will bear higher speed and put a larger amount of yarn upon the bobbin, and, what is. of great importance,fit will spin filling with less twist, producing a soft, slack-twisted yarn, in my opinion equal to that spun upon a mule.

In Fig. 7 I showen arrangement of speedchanging gearing to change the speed gradually as the traverse-lever rises and falls. In such ligure the shaft 4 of the drivingdrumis provided with a cone, p2, that is connected with a reverse-cone, q2, on a shaft, r2, provided with a pinion, s2, by means of a belt, t2. This belt is guided and moved by a suitable beltshifter,I u2, `connected with lever 14 by an` elbow-lever, 122, the lever `14 being, in this instance, connected positively with `the traverselever 15 by means of a pin, t3, on the lever-,14-

entering an opening inthe lever 15or vice versa, so that the lever 15 will move the leverA 14 andbelt-shifter positively as the traverserollers of the set of drawing-rollers in any ordinary way. This plan varies the speed ot all the rolls; butin case it is desired to drive the front roll alone at "arying speed, the pinion s2 may be geared by intermediates with'a pinion fast on the front-roll shaft, and a sleeve provided with pinions, and mounted on 4the front-roller shaft, may be operated at a uniform speed to drive the back rolls.

In using speed-changing devices for the drawingrollers in a frame adapted to the filling-wind, and wherein the speed is changed during each complete rise and each complete fall of the ring-rail or traverse, it will Ybe ob-' served that it is unnecessary to reset thel speed-changing devices when the traverserack is turned back 0r reset to commence new bobbins, for, in a frame embodying my invention, thespeed-changing devices, once operating correctly, are always in operative relation with the movement ofthe traverse.

The fast and slow speed pinions may be operated from any moving part of the traverse besides the traverse-lever.

1n the pla-ns Yso far described, the speedchanging devices for varying the speed of the rolls have been adapted to be changed as to position through the action of the traverselever; but I do not desire to limit this invention to varying the speed of the rollers by the particular fast and slow speed pinions described, or the cones, for I may use a form of compound gear substantially as represented in Fig. 9 of George Drapers said application, (Case B,) or I may use an eccentric gear properly connected by gearing with the front rollers. In this last plan the change ot' speed would be continuons, taking place at each rising and falling movement of the traverse; but the speed-changing devices need not necl essarily have any connection with any part of gear.

In Figs. 8 andl 9, a2 represents the gear on the cylinder or drum-shaft. The back rollers at one side of the frame are driven from this gear through gear l? and its attached pinion 1b, it engaging an intermediate, 2a, that engages a gear, 3, loose on the front-roller shaft. The gear 3* has a pinion, et, that gears Figs. 8 and 9 show one plan of varyingA teenies into an intermediate, 5a, provided with a pinion, 6a, that engages a gear, 7, on the back-roller shaft. The back roller, at the opposite side of' the frame, is driven from intermediate 2iJb through intermediate 2b, that engages intermediate 3b, loose on the shaft of the front roller, a pinion, 4b, on 3b engaging an intermediate, 5b, provided with a pinion, 6b, that engages a pinion, 7b, on the back roller. i

The front roller derives its variable speed from the gear a2. The gear a2 engages an intermediate, a4, having a pinion, which engages an intermediate, b4, having a long` pinion, which engages the gear c4 on the shaft that carries the traverse cam, and also an intermediate, d4, thatv engages with the eccentric gear e, having an attached large gear, f4,

which` engages a pinion on intermediate g4, that operates intermediate h4, that engages a gear, i4, on the front-roller shaft at one side the frame. The front roller at the other side of the frame is operated from f4 through a pinion on intermediate g5, that engages an intermediate, h5, connected with the front-roller gear 5, so as to moveV it in the proper direction. shape the shape of the Aheart-cam c3, Fig. 2. The intermediate d4, that engages the eccentric gear c4 and the pinion on f4, is supported on a movable arm, x4, connecting the center of the pinion with the center of d4.

The speed of the front rollers may be varied through a belt-shifting arrangement, as shown in Fig. 7, and then the back rollers may be driven at uniform speed, as described in Figs. 8 and 9. With the devices for operating the front rolls, as in Figs. 8 and 9, to vary the speed of all the rolls, the back rolls might be driven from the front rolls, as described in my first plan in Figs.. 1 and 2.

My improved frame operates to spin and wind the yarn by a method essentially diierent from that practiced in any other machine known to me. These same plans can be employed to spin directly upon the spindles without the use of bobbins, and I do not limit the invention to the use of a bobbin of any particular shape. Y

This invention, so far described, has been considered with reference to spinning filling 5 but it is obvious that the same devices may be employed with great advantage for the production of warp-yarns, they being Wound upon the bobbins with the lling-Wind.

In winding warp or weft upon bobbins or -1 'plied toward the upper end of the bobbin,

thereby saving power and wear 'of spindles, and enabling the spindles to bear higher speed than were the bobbins wound after the manner of the warp-wind.

The eccentric gear approximates in ilfflhe change of speed in all forms of my invention takes place during the time that each layer of yarn extending from the surface or outer portion of the yarn-load to the empty bobbin, or vice versa, is being laid.

This invention may be embodied in a spinning-machine wherein the bobbins and spindles are raised and lowered by the traverse.

l. In a ringspinning frame, provided with a traverse mechanism to wind the yarn in cone-shaped layers from the outside of the yarn'load to the empty bobbin or spindle, the combination of spindles and drawing rollers 'with mechanism adapted-to automatically vary the speed of part of the rollers of the set with relation to the others and the spindles,

or of all the rollers with relation to the spindles, during each complete rise and each com'- plete fall of the traverse-rail, the whole being n constructed to operate substantially as and for the purpose described.

2. The improvement herein described in the .art or method of spinning on ring-spinning frames, consisting in automatically varying the speeds of the rollers with relation to each other and the spindles during each complete rising` and falling movement of the traverserail, to equalize the size of and twist in the yarn7 substantially as set forth.

3. In a ring-spinning frame, the combination, with speed-changing mechanism :adapted to automatically vary the speed of the rollers with relation to each other and to the spindles, to equalize the size of and twist in the yarn, as described, at each rise and fall of the ringrail or traverse7 of a cam to move the ring-rail or traverse faster in one direction than in the other, to bind the yarn, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WM. F. DRAPER.

Witnesses:

GEO. W. GREGORY, S. B. KIDDER.

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