US1534071A - Roller mechanism for spinning machines - Google Patents

Description

April 2l, 1925.

R. A. MORSE Roman uscnmsm FOR SPINNING mamas Filed Feb. 27, 1923 2 sheets-sheee`f1- Fi'led Yep. 27. 1923 April 2l, 1925. 1,534,071

R. A. MORSE' ROLLER MECHANISM FOR SPINNING MACHINES 2 Sheets-Shan 2 Patented Apr. 2l, i925.

UNITED STA'IE BEGINALD A. MORSE, OF PROVIDENCE, RHODE ISLAND.

.ROLLER MECHANISM EOE SPINNING MACHINES.

Application led February 27, 1923. Serial No. 621,648.

To all whom t may concern:

Be it known that I, REGINALD A. Mossa, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Roller Mechanisms for Spinning Machines, of which the following is a specification.

The invention relates to devices for producing cotton yarn, objects of said invention being to increase the quantity of highgrade yarn produced by ring-frames and mules, to insure the uniform quality and strength of the products of such machines, and to prevent loss of material occasioned by the breaking of the yarn beyond the drawing rolls.V

In the operation of spinning devices now in practical use, the partially-formed and loosely-wrought yarn material is liable to be abnormally attenuated and weakened at varions points by the tension imposed by the differential action of the drawing rolls, and if attenuation and weakening are sufliciently f pronounced, the fibers of the yarn will be pulled apart by the bobbin. When severance thus occurs production stops and the severed ends of the yarn have to be splicedV by a skilled workman before production can be resumed. The splicing operation, which is very troublesome, leaves imperfect spots or slubs in the finished yarn, and these have to be remo-ved by experts.

This defect in the operation of spinning machines has heretofore been regarded as an unavoidable obstacle to the production of yarn having substantially the same caliber and strength throughout its entire length, it having been assumed by those who are skilled in the art of spinning that attenuation and separation of yarn fibers is due to the uneven distribution of fibers in the sliver, or to some other antecedent defect for which there is no possible mechanical remedy.

I have found that this apparently insuperable difliculty in the production of yarn may be avoided even if the roving and the sliver from which it is formed have attenuated or weakened portions, provided that conditions in the dra-wing mechanism are such as to prevent abrasion and attenuation of the loosely-formed sliver. These results I attain by preventing accumulations of such substances as lint, dust, oil and moisture in the grooves of the flutings o-r corrugations with which the lower drawing rolls are provided, thereby permitting said rolls to fully co-operate with the upper drawing rolls in feeding the yarn through the drawing mechanism, without, at the same time, removing or displacing any of the fibers from the body of the sliver. The deposits in these grooves are always of a viscous na ture, and, as I have ascertained, become adherent to fibers of the yarn which they detain and partially separate from the yarn as it passes onward through the drawing mechanism. It will be understood that the twisted yarn formed beyond the drawing rolls is normally under about all of the tension it can withstand, and that it may not be able to bear the strain if the allotted fibers have been displaced.

The cleaning device is, preferably, a roller covered with a. fabric, such as mohair plush, having a deep and resilient pile, the filaments of which are sufficiently stiff to penetrate the spaces between the flutings and dislodge any foreign matter that accumulates in the grooves of a lower roll.

The yielding character of the mohair plush enables the roller to produce suctio-n sufficient to remove loosened foreign matter from the grooves of the roll, while the filaments of the fabric receive and dissipate charges of static electricity which tend to accumulate on the drawing mechanism and other parts of the machine.

Referring to the drawings:

Figure l is a vertical sectional view show ing my device applied to pairs of a set of drawing rolls;

Figure 2 is a plan view with certain parts broken away;

Figure 3 is a perspective view of an attachment embodying my invention, and

Figures a and 5 are, respectively, enlarged end and plan views of the roller.

l is the frame of the drawing-roll mechanism, and 2 is cross bar to which my device may be attached. This frame is provided with three pairs of drawing rolls which, as is usual, are so related to the driving mechanism that the drawing action of the second pair of rolls is less than the drawing action of the third pair of rolls, 3, 1l and 5 being, respectively the upper drawing rolls, and G, 7 and 8 being, respectively, the lower drawing rolls. 9 is a guide for the yarn l() which is shown as extending longitudinally between the iippe1..and the lower rolls of the drawing mechanism.

The improvement constituting the present invention, is, preferably, an attachment which may be applied to standardized spin ning machines, although,as will be-clearly understood, any other form of device which is capable ot' attaining the results .effect-tr` ated by my device as herein revealed, is within` the scope of the invention, the* essentialfelement of which is av device, 'preferably air'oller 11, operating to keep desired lower drawing rolls'clean. to thereby prevent? fibers of the yarn trom-adhering to their surfaces which, being `providedwith line Vflutes or oorrugations 12, receive and reta-inuparticles vof the 4iibers which are forced `into the spaces `between liutcs or corrugations by the pressure oi' the upper drawing rolls. These spaces'rcceive also-.particles of dust and lint which becomesaturatedvwith oil and moisture, so that the accumulationsI within saidspaces are lrendered viscous enough to catchand detach libereA from the passing yarn and' leave it weak kin those spots-where the `displacement of iibers occurs.

The drawing rollsot a spinningmachine have different peripheral speeds, the-object being toI stretch the sliver and thereby cause the iibers oiisaicl sliver to be'drawn 'into parallelism. It' thisv arrangeinent et the tibers isnot maintained, the product will be lacking in the Irequired tensile strength and willbe liable to break when thel pull ofthe bobbin puts it under tension. lt is, for-'this reason, essential that the deposits in the grooves of the lowerdrawing rollswhich catch the passing fibers of the sliver,'should beremoved. llt present, they will undo the work performedy by the drawingrolls,-and leave the `fibers in various undesired posh tions.

The roller llis made orp wood or other suitable substance, and isiprovided with ,t layer of some materialwhich is capable of keeping the Vgrooves between the 'flutes .or corrugations free trom toreignimatters,the material whichl l 4have successfully einployed in actual practice being ai piled fabric oi' mohair whose filaments are .suiiiciently stift and resilient to enter andl effectively cleansaid groovesl without suffering permanent distort-ion. The nature of the surface of the roller is, however, i1nmaterial, provided it is-ot such character as'to eiiectually perform the work of maintaining the dra-wing rolls 1in such. condition that the sliver may .pass '.theinuwithout zbeing ini-- paired or broken.`

This roller` l1 is. .provided with trunnions 13 resting in oblique open bearings 14 oi a yoke;lfwhichaisdisposed below the level ot the lower rolls 6, 7 and 8 in such position that the rollervllawillgbe in contact with the rolls G and 7, or such other drawing rolls in any particular;machineas mayarequire its cooperation. illhe 'yokelf 15` 5 is finounted in a bloclnS:havingtarslot 19lifor itsxrecep tionthei'ta`il .part .2050i said yoke being ,plv oted fat 21. .Tlieitblock. )18:carries aeaveal; springzQQawhosefneei end 23;ibears against the .-tail end joiiithe 'yokexzso as.;;to "lift its fronts end and gently@ press v"the .f roller" 1l against L the 4'flower drawing trolls i The block, 18;, is::providedfavith1a .inotcheito areceive .Y the cross f bar f. 2 ofathcz, iframe 1, and thenpperfendof said iblockwhas a-fset screw for: gsecuring; @said blockyirlnly :to i said cressribar.

I; :havemadegjtheI rolled-calling. .device ydetachable V.in1orderfthat. :it-.mayJ ibe applied to standardized machines without requiring alterations in` their; .nieehanismafV although,

as will be.understeod.spinning `machines y.

containing inseparable moll-cleaning. means are within the scope of :my: invention. y

' Havingthusdescribed my invention what l claimfis: V

l. Lgspinning machine ,having in-co1n1 bination pairs of, drawing rolls, and a roller having thereon aflayer ofnnohair.;` lush. for cleaning` thegrooves ofy ai'lower ro Lof said pairzoi rolls.

. 2. u'isrfanA articlevofimanufacture, a cleafnf ing, device. for-.spin1ing imachines including a cleaning roller v for i the:V groovesy ofi a` lower drawingroll, a yoke;` a block supporting said yoke and a springfbearingon-Said yoke, `said yoke being lpivotallyk mounted insa-idblock. 3a Means for 4.-keep-inga longitudinallygrooved. drawing` i roll slaan, comprising 1 a member havinga a-surzfacelield against the surface of the. drawing roll, thecontactng surfacesfbeing .caused to travel Aat substantially the-,same speed, the; su-rtaccaof, the cleaning member being. coveredwith `projecting resilient filaments ofsu-ilicient length and stiilnessta enter. ,thegrooves of the drawing roll tothe bottomsithereot'.

In testimony whereof I aitix my signature.

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