US2568446A

US2568446A - Method and means for intermittently treating sized yarn

Info

Publication number: US2568446A
Application number: US770584A
Authority: US
Inventors: Ira L Griffin
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-08-26
Filing date: 1947-08-26
Publication date: 1951-09-18
Anticipated expiration: 1968-09-18

Description

Sept. 18, 1951 L. GRIFFIN 2,563,446

METHOD AND MEANS FOR INTERMITTENTLY TREATING SIZED YARN Filed Aug. 26, 1947 6 Sheet s-Sheet l a 4 Nb; 2 a a Swa 8 m fi h m W 8 3 E R R E W 5 Q t E R h I IRA L.GRIFF|N A Trap/v: r.

Sept. 18, 1951 6 Sheets-Sheet 2 Filed Aug. 26, 1947 m QE INVENTORI Arm/awry.

Sept. 18, 1951 GRIFFIN METHOD AND MEANS FOR INTERMITTENTLY TREATING SIZED YARN 6 Sheets-Sheet 5 Filed Aug. 26, 1947 INVENTORI RA L. GRIF IN A TTORNEY.

Sept. 18, 1951 I. L. GRIFFIN METHOD AND MEANS FOR INTERMITTENTLY TREATING SIZED YARN 6 Sheets-Sheet 4 Filed Aug. 26, 1947 N QE L INVENTORI A TIDE/YE).

L. GRIFFIN METHOD AND MEANS FOR INTERMIT 2,568,446 TENTLY Sept. 18, 1951 l.

TREATING SIZED YARN Filed Aug. 26, 1947 6 Sheets-Sheet 5 OTGE A T TOR/YE 7.

Sept. 18, 1951 R N 2,568,446

METHOD AND MEANS FOR INTERMITTENTLY TREATING SIZED YARN 6 Sheets-Sheet 6 Filed Aug. 26, 1947 NTQE Patented Sept. 18, 1951 METHOD AND MEANS FOR INTERMIT- TENTLY TREATING SIZED YARN Ira L. Griffin, Charlotte, N. 0.

Application August 26, 1947, Serial No. 770,584

24 Claims.

1 This invention relates to apparatus and method for treatingyarn while the same is being sized and is an improvement over and above my prior Patent No. 2,074,745, of March 23, 1937.

In my former patent a treating liquid such as a suitable lubricant was sprayed onto the web of sized yarn after itleft the size box and before it reached the drying cylinders of a sizing machine. This application of the lubricant was substantially continuous-and I have found by experimentation that it is not necessary to apply the lubricant continuously but better results can be obtained by intermittent application of the treating solution or liquid such as a lubricant.

It is another object of this invention toprovide means for intermittently causing contact between a treating liquid applying means and a sheet of yarn traveling from a size box to the drying cylinders in a sizing machine for applying a treating a liquid thereto and which liquid is in turn deposited on the surface of the drying cylinder and is eventually applied to all portions of the web of yarn even though originally applied at intermittent intervals, say about an inch apart on the web of yarn.

By use of the intermittent application of the treating solution I find that a very great saving is effected in the amount of liquid applied to the yarn and better results are obtained than in my aforesaid patent. By applying the liquid to the yarn at spaced intervals, the liquid, is in turn, deposited on the cylinder and produces a film of liquid which then covers the complete sheet of yarns which have been sized and are being dryed on the drying drums of the sizing machine.

By the use of this apparatus and method, I find that it is so efiicient that practically all of the softeners can be left out of the sizing solution and only enough fat is necessary in the sizing solution to prevent foaming in the size box or to act as a control to regulate absorption of humidity by the yarn in the weave room. I find that good results can be obtained in applying the liquid to the sheet of sized yarn before it is dried by running the slasher at the rate of say about 40 yards per minute in the sizing of No. 12 yarn with about 2500 ends in the warp sheet and using only about 2 quarts of the liquid or treating solution man 8 hour operation. In such an instance the sheet of yarrr would not be separated but if it were separated into two different sheds the amount of liquid picked up would be somewhat smaller.

I have also found that it is not necessary to dilute the treating liquid, such as oil, with water and I find a good treating solution to be a mixture of thin mineral oil like No. 10 motor oil and sulphonated mahogany mineral oil products. By the application of this mixture as will hereinafter be explained, the oil in the oil pan will not be diluted by the water but is brought up on the oil applying roll as a very thin film. The principal action is that as the oil from the pan is brought up and applied to the sheet of warp it tends to form into a jelly-like emulsion when contacted with the sheet of wet sized yarn inthe whipping action of its vibration and this particular type of oil forms a jelly-like emulsion in the presence of small amounts of water. The oil absorbs water from the wet sized yarn and as a result of this vibrating, as will be hereinafter explained, small amounts of the emulsified oil will be picked up by the yarn leaving small mounds of this emulsion on the oil applying roll as it continues to turn thus giving stipple eifect to the roll and thus prevents the warp from actually contacting the oil applying roll itself. The top surface of the lubricant applying roll may, if desired, be driven in a direction opposite to the direction of travel of the yarn.

Some oi. the objects of the invention havin been stated, other objects will appear as the description proceeds when taken in connection with the accompanying drawings, in which Figure 1 is a side elevation of a sizing apparatus such as a slasher and showing my invention applied thereto;

Figure 2 is a top plan view of portions of Figure Figure 3 is an enlarged detail view of the righthand portion of Figure l and showing the sheet of yarn out of contact with the lubricant app y roll;

Figure 4 is a view similar to Figure 3 but showing the sheet of warp in contact with the lubricant applying roll; 1

Figure 5 is a vertical sectional view taken along the line 5-5 in Figure 1 and omitting the driving belt;

Figure 6 is a vertical sectional view taken along the line 6-6 in Figure 5;

Figure 'l is a vertical sectional view through the lubricant applying trough and an eccentrically mounted lubricant applying roll;

Figure 8 is a side elevation of a slasher and showing still another modified form of lubricant applying and warp vibrating means associated therewith;

Figure 9 is an isometric view with portions broken away of the portion of the lubricant applying means nearest the observer in Figure 8;

Figure 10 is a vertical sectional view taken substantially along the line Ill-l0 in Figure 12 with warp shown as in Figure 8;

Figure 11 is an elevation showing the invention in use when two or more size boxes are employed;

Figure 12 is a top plan view of Figure 11.

Conventional methods and processes now in practice comprise the sizing of a warp on several different types of slashers. Contributing to the warp is warp beam and generally in practice more than one beam, ranging from one to ten and sometimes even more. The number of ends to the beam and the number of beams governing directly the total number of ends comprising the warp itself, the warp thus comprised is introduced into the size box so as to adequately contact a suitable sizing mixture and is thereafter dressed between suitable rolls prior to the drying operation. The drying operation in most cases consists of a direct transfer of the sized warp yarn to drying cylinders commonly known as cans.

A warp sizing mixtures is generally composed of starch, starch derivatives such as thin boiling starches, dextrines and in some cases natural gums and glues are used. Also, dry milled starch flour, such as is produced from wheat and rye, and containing all the gluten natural to such flours, may be used to advantage with my method of lubrication because the usual adhesion of the gluten to the drying cylinders is' prevented. These materials are used for the purpose of binding together the fibers comprising the thread and to provide a surface coating necessary to withstand the tension and friction of the yarn during the weaving operation. In addition to the materials mentioned above, various oils, fats, waxes and hygroscopic agents, such as glycerine are used. Oftentimes these materials are combined in various proportions and are known as compounds.

The incorporation of oils, fats and lubricating agents in the sizing mixture in the size box. has a tendency to give a broken film and lessen the adhesive qualities of such material in reing a continuous surface coating.

The ideal method would be to size the warp with a solution or mixture of adhesive material and water. The elimination of such iatty materials in the mixture provides the maximum degree of adhesion, added tensile strength, and continuous size film. The purpose is to accomplish this result by either eliminating entirely all fats, lubricating materials and non-adhesive materials in the size mixture, and apply the necessary lubrication to the surface of the size film after it is applied to the yarn and prior to the drying operation or intermediate in the drying operation. This method of surface lubrication of the size film will to a greater degree prevent adhesion to the drying cans or other contacting surfaces such as guide rolls or separating contrivances.

When dried in combined sheets, the ends must be torn apart and separated one from another by means of lease rods arranged in the frame following the drying operation. When this operation of separating the various ends is effected, the size film which has been placed upon the yarn is ruptured and torn off the yarn in places, thereby weakening .the strength and protecting properties of the size film. This causes what is known as shedding at the slasher and in the loom. The light contact of the yarn to the oil carrying roll prevents smearing or flushing of the starch film on the yarn while wet, such light intermittent contact also makes possible development of an emulsion which minimizes penetration of the oil into the starch film. Two size boxes are often used now, so lubricant would be applied to lower sheet only in such cases.

Referring more particularly to the drawings, the numeral l denotes suitable supports for rotatably supporting the ends of a plurality of warp beams such as I 2, l3 and I4 around which yarn is wound. When it is desired to treat the yarn with a sizing solution, the beams are placed in the supports and the combined warp I5 is drawn spect to binding the fibers together and produc- 1 therefrom over rolls l6 and I1 with a suitable.

weighted roller l8 resting thereon, which rolls l8 and II are rotatably supported on top of a rectly to a large drying cylinder 30 mounted in suitable brackets 3| disposed on each side of framework 32 of the slasher and is brought completely around the drying can 38 and then brought around a smaller drying can 33 and then passes beneath an idler roller 34 and over an idler roller 35 where it is passed between suitable lease rods, not shown, to the take-up end of the sizing machine. This part of the apparatus is conventional.

The lower dressing roller 24 has a shaft 40 extending therefrom at one end on which is mounted a V pulley 4| having a belt 42 mounted thereon which extends downwardly and is secured on a step pulley 43 mounted on an input shaft 44 of a gear reduction housing 45 which has extending solution such as a lubricant 58. If desired, the

pulleys 4!, 43, 46 and 50 could be sprocket wheels and the

belts

42 and 41 could aswell be sprocket chains and in which event an idler or adjusting pulley would not be necessary, but where a belt is used, it is necessary to provide a bracket 60 slotted as at 6| having a pair of bolts 62 penetrating the slot and fixedly secured to a framework 63 suitably supported by the floor, the bracket 60 having an idler pulley 65 thereon adapted to maintain tautness in the belt 41 regardless of the vertical adjustment of the plate 55.

The dressing rolls 22 and 24 of the size box are driven by any suitable means, not shown, such as the conventional drive shaft extending longitudinally of the slasher and size box or boxes.

The plate 55 has projecting downwardly therefrom a pair of

rib members

61 and 88 to which are pivotally secured pairs of links 10 and 1 I, the lower ends of said links being pivoted by means of pivot bolts 13 and I4 to the upper ends of pairs of

bars

15 and 16 whose lower ends are pivoted as at 11 and 18 to

uprising projections

19 and 80, projecting upwardly from the framework 63. The pivot bolts 13 and 14 have mounted thereon andbetween the lower' ends of links 10 and

H. sleeve members

83 and 84 which have rising upwardly therefrom

projections

85 and 86 respectively which are threadably penetrated by op-' respect to the sheet of warp I5 passing thereabove.

I have found that best results are obtained by intermittently applying the treating solution such as a lubricant to the sheet of warp I5 and not continuously applying it to the warp. And I have found that by providing brackets 93 and 92 on the framework 32 of the slasher that I can mount a cylinder 94 in the upper ends of these brackets by the cylinder being provided with stub shafts 96 and 91 projecting from each end thereof and rotatably mounted in the upper ends of the brackets 92 and 93, and providing on this cylinder a plurality of spaced ribs 98, passing the warp I5 beneath this cylinder 94, the pull of the warp will rotate the cylinder and the ribs will vibrate the warp and move it upwardly and downwardly and cause it to intermittently engage the the cylinder 94 by any suitable means such an mounting a pulley I00 on an, extended portion of I shaft 96 and mounting a belt l0I thereon and leading this belt to a pulley I02 disposed on out put shaft I03 of a variable speed electric 'motor I04 which is supplied with electric current from 1 any desired source by means of wires I05 and I00.

In Figure 3 the parts are shown in a position where the warp sheet I5 is engaging'two of the projections 90 and thus the tension; of the warp allows the warp to be raised upwardly so that it will not engage the lubricant applyingroller'iz. In Figure 4 the parts are identical except that'it is there shown that only one o f theprojections or ridges 98 is engaging the warp sheet [5 which moves it downwardly to cause it totouch momentarily the lubricant applying roller' 52, I This causes a strumming of the warp sheet l5 by having it intermittently contact the projections or ridges 98 and thus moves it up and down in a vibratory manner to not only separate the warp threads one from the other but also to cause spots on the warp sheet located approximately one to two inches apart to have the lubricant applied thereto. The lubricant of course applied in spots to the lower side of the warp sheet when it reaches the drying cylinder is applied to the drying cylinder and thus in turn is equally applied to the whole of the warp sheet, contacting the cylinder.

In Figure 3, the cylinder 94 is driven, and by I practice in mills to have two size boxes through i varying its revolutions per minute, the warp sheet I5 can be caused to engage the roller 52 as often as desired, to thus space the lubricated spots at any desired distance apart from each other. In Figure 3, by varying the distance between the projections 99,, the contact intervals A may be changed.

In Figure '1, a slightly modified form of the.

In this form of the inapplying eccentric roller III and thus causes the roller to contact the lubricant in the trough I10 and then to intermittently contact the warp sheet I5 to apply lubricant thereto at intermittent spots therealong.

In Figures 8 and 9 like reference characters will apply to like parts except that in the brackets 92 and 93 there is mounted a warp divider and vibrator to form warp sheets I5a and I5b. The warp divider and vibrator comprises end disks I having fixed therebetween a plurality of rods or pipes I8I which move the warp sheets I5a and I5b up and down which intermittently moves the lower warp sheet I51) into contact with the roller 52 to apply lubricant thereto as the roller is rotated by means of the belt 41.

Like reference characters will apply in all of the figures where like parts are indicated.

In Figures 11 and 12 a slightly modified form of the invention is shown in which like reference characters apply, the main difference in Figures 11 and 12 being that it is quite frequently a which the warp is passed in divided form so that it is not necessary to split the warp after it is sized, and in addition to the size box I9 there is provided an additional size box I9a'and in which similar reference characters apply as to the size box IS with the suflix a added, and the dressing roll 24a is driven by means of a belt 28 extending from a suitable pulley mounted on shaft 40 to a pulley mounted on shaft 40a, and shaft 40a at its other end has a pulley 29 thereon and dressing roll 22a at its other end has a pulley 36 thereon with a belt 31 connecting the same so as to drive the dressing rolls 24a and 22a in the additional size box. The dressing rolls in both size boxes are driven by a longitudinally extending shaft as previously described. v

Likewise, there is an additional set of stands Ilia with additional warp beams Ila, I3a and I41! mounted therein which pass their warps over a suitable roller 38 and then they are passed beneath a roller 39 before entering the size box I911. The sheet of warp I5c extending from the warp rolls I2, I3 and I4 in Figures 11 and 12 is guided over a suitable idler roller 48 and then beneath idler roller 49 secured on the lower portion of sizebox I9a and then beneath an idler roller 51 secured to a lower portion of size box I9 before the warp I5c passes into the size box I9. The upper warp I5d emanating from warp beams I2a, I3a and Ma passes through the size box I9a.

In Figures 11 and 12 the lower warp sheet I5c is vibrated to cause it to intermittently engage lubricant applying roller 52 by cylinder 94, as has been already fully described.

Throughout the specification and claims, the terms, lubricant, oil, treating solution, treating liquid. liquid" and mixture" have been used. It is to be understood that these terms are to include any suitable treating'liquid.

through the sizing box,

- after it has passed through the size box, a container for holding a treating solution a roller partially submerged in-a treating solution, means for rotating the roller, means for adjusting the position of the roller towards and away from the path travelled by the sheet of yarn, and means for moving intermittently the sheet of yarn up and down to cause it to intermittently engage the treating roller to thereby apply the treating solution to spaced portions of the sheet of yarn before it reaches the heated drums of the sizing machine.

3. In combination, a slasher having a sizing box and at least one drying drum and having rotary means serving to move the two layersup and down on their travel from the size box to the drying cylinder, lubricant applying means engageable by the lower sheet as it is moved up and down to apply lubricant thereto at spaced intervals thereon and before the two layers are joined into one layer on the drying cylinder.

'7. That method of sizing warp yarn and applying a treating solution to the warp which comprises passing a plurality of warps through a sizing operation, then dividing the warp into upper and lower layers, then vibrating the upper and lower layers and applying a lubricant to one of the layers and then joining the two layers and subjecting the combined layer to a drying operaion.

8. That method of sizing warp yarn and applying a lubricant thereto which comprises submeans for supporting a plurality of warp beams,

the lower layer of yarn into contact with the lubricant applying apparatus to thereby cause a lubricant to be applied to spaced portions of the lower sheet of yarn before it reaches the drying drum to be re-united with.the upper layer of yarn.

4. In combination, a slasher having a sizing box and a drying drum, means for passing warp yarn from a-plurality of packages through the sizing box, means for dividing the warp into upper and lower spaced layers after it has passed lubricant applying means, means for rotating the yarn dividing means to impart up and down movement to the two layers of the sheet of yarn to cause the threads of the two layers to be separated from each other and to move the lower layer into contact intermittently with the lubricant applying means to thereby apply a lubricant to spaced portions of the lower layer of yarn.

5. The combination of a slasher having a size box and a drying cylinder, means for passing 7 warp yarn from a plurality of packages through the sizing box, means for dividing the warp into .upper and lower spaced layers after it has passed through the sizing box, a rotary member having an uneven periphery adapted to be placed between upper and lower layers of the sheet of yarn as it passes from the size box to the drying cylinder to impart up and down movement to the two sheets of yarn, lubricant applying means for contacting the lower side of the lower layer oi. the yarn as it is moved up and down by the rotary member to thus cause intermittent spaced portions of the lower layer to have a lubricant applied thereto.

6. The combination of a slasher having a size box and a drying cylinder and means for supporting a plurality of creels for passing their warps through the size box in a composite sheet, rotary means for dividing the composite sheet after it jecting the yarn to a sizing operation, then dividing the yarn into upper and lower layers, then imparting vibratory up and down movement to the two layers, applying a lubricant to the lower side of the lower layer while it is being vibrated, then converging the two layers into one layer and then drying the composite layer.

9. Apparatus for treating warp yarn comprise ing means for holding a plurality of rolls of warp yarn, a sizing box through which the warp yarn from said rolls is passed to apply a coating of sizing thereto, a drying cylinder over which the yarn is passed, means for separating the yarn into upper and lower sheets after it has been sized and for imparting up and down vibratory motion'to the two sheets of yarn, and means disposed below the lower sheet of yarn for applying a lubricant thereto at intermittent portions th'erealong before the layers of yarn are converged into one sheet on the drying cylinder.

10. Apparatus for treating warp yarn which comprises a sizing box through which the yarn is passed to apply a coating thereto, a drying cylinder over which the yarn is passed to dry the coating thereon, means disposed between the sizing box and the drying cylinder for splitting the yarn into upper and lower layers, and for imparting up and down vibratory motion to the upper and lower layers, andlubrioant applying means adapted to be contacted by one of the layers of yarn at intermittent portions thereof to apply a lubricant to spaced portions of one of the layers while traveling from the size box to the drying cylinder.

11. Apparatus for treating warp yarn which l2. That method of treating yarn which com- 7 prises-sizing the yarn and splitting the web into upper and lower layers, and applying a lubricant to the lower layer at spaced intervals therealong and then converging both layers together and drying the yarn.

13. That method of treating yarn which comprises sizing the yarn, splitting the web into upper and lower layers, vibrating the webs and inis sized into upper and lower spaced layers, the 1| termittently contacting one of the webs with a treating solution to apply intermittent spots of treating solution to one of the webs.

14. That method of treating yarn which comprises applying sizing to the yarn, then dividin the yarn into upper and lower layers, vibrating both upper and lower layers while they are still wet with the sizing, applying a treating solution to spaced portions of one of the webs and then converging the two webs into a single web and drying the sizing and treating solution thereon.

15. Apparatus for treating a web of yam which comprises sizing apparatus for applying a coating to the yarn, a container for holding a treating solution, a roller partially submerged in the treating solution in the container, means for rotating the roller, means for intermittently engaging the web and moving it upwardly and downwardly to vibrate the same and to cause the web to intermittently engage the roller having the treating solution thereon to apply a treating solution to intermittently spaced portions of the web of yarn.

16. Apparatus for treating yarn which comprises a slasher having a size box and heating drums for drying the yarn, a treating solution trough disposed between the size box and the drying drums, a roller mounted in the trough and projecting above the upper edge of the trough, the trough being adapted to contain a treating solution, means for dividing the warp into upper and lower spaced layers after it has passed through the size box, a rotary member disposed between upper and lower webs of the yarn and having a plurality of spaced transversely extending rods means for applying rotation to the rotary member to cause it to vibrate the upper and lower sheds upwardly and downwardly and to thus cause the lower shed to intermittently engage the roller having the treating solution thereon.

17. Apparatus for treating yarn comprising a slasher having a size box and a drying drum, a treating solution container disposed between the size box and the drying drum, a driven roller mounted in the container and projecting above the upper edge of the container, means for feeding a plurality of yarns in sheet form through the size box and onto the drying drum; a rotary member having spaced ribs thereon adapted to engage the web of yarn and to move it upwardly and downwardly to vibrate the same and to also cause the web of yarn to intermittently engage the roller for applying a treating solution to spaced portions of the web of yarn.

18. That method of treating warp yarn which comprises forming the warp yarn'into a plurality of sheets of unsized yarn, then introducing each sheet into a separate size box and passing each sheet through its separate size box to apply sizing thereto, then providing a lubricating means normally out of touch with the two sheets of warp, then imparting vibratory up and down movement to one of the sheets of warp to cause it to intermittently contact the lubricant applying means and then Joining the two sheets of sized warp together on a drying cylinder of a slasher.

19. That method or treating yarn which comprises applying sizing to the sheet or yarn, intermittently forming spaced transverse rows of lubricated spots on all strands of the sheet of yarn, and controlling the length of the lubricated spots on the strands oi! yarn.

20. Apparatus for treating sheets of yarn which comprises means for applying coating ma- '10 terial to the sheet of yarn, a trough containing a treating solution mounted below the path travelled by the sheet of yarn, a constantly driven roller mounted in the trough and having its lower portion submerged in the treating solution and having its upper portion projecting above the upper edge of the trough, means for causing relative intermittent movement between the sheet of yarn and the roller, to thereby apply the treating solution to spaced portions of the sheet of yarn.

21. Apparatus for treating sheets of yarn which comprises means for applying coating material to the sheet of yarn, a trough containing a treating solution mounted below the path travelled by the sheet of yarn, a constantly driven roller mounted in the trough and having its lower portion submerged in the treating solution and having its upper portion projectin above the upper edge or the trough, means for causing relative intermittent movement between the sheet of yarn and the roller, to thereby apply the treating solution to spaced portions of the sheet of yarn, and means for regulating the dis tance between the roller and the normal path of the sheet of yarn, to thereby regulate the amount of contact between the yarn and the roller.

22. Apparatus for treating yarn comprising a slasher having a size box and a drying drum and means for feeding a sheet of yarn through the size box and onto the drying drum, a trough disposed between the size box and the drying drum for containing a treating solution, a rotary roll mounted in the trough and means for moving the roll upwardly and downwardly intermittently to cause it to engage the lower side of the web of yarn at spaced intervals to apply a treating solution thereto.

23. Apparatus for treating yarn comprising a slasher having a size box and a drying drum and means for feeding a sheetof warp through the size box and onto the drying drum, a treating solution trough disposed between the size box and the drying drum and below the sheet of warp, a roller eccentrically mounted in the treating solution trough and means for imparting rotation to the eccentrically mounted roller to cause it at spaced intervals to engage the lower side of the web of yarn to apply a treating solution to the web of yarn.

24. Apparatus for applying a lubricant to a sheet of yarn during a sizing operation which comprises a sizing box through which the sheet of yarn is passed, a drying cylinder onto which the yarn is placed for drying the same, a lubricant containing trough disposed between. the size box and the drying cylinder, an eccentrically mounted roller rotatably mounted in the lubricant trough, means for imparting rotation to the eccentrically mounted roller to cause it to intermittently engage the sheet of warp on its lower side and thus to apply a lubricant intermittently to portions or the sheet of sized yarn.

IRA L. GRHFIN REFERENCES CITED The following references are of record in the file of this patent:

UNITED s'ra'ras PATENTS Number Name Date 627,329 Dratz Jan. 20, 1899 2,074,745 Griiiln Mar. 23, 1937

Claims

1. THAT METHOD OF APPLYING SOLUTION TO A SHEET CONTROLLED AMOUNT OF A TREATING SOLUTION TO A SHEET OF YARN WHICH COMPRISES PASSING THE YARN THROUGH A SIZING BOX TO APPLY A COATING THERETO AND THEN INTERMITTENTLY APPLYING TO SPACED PORTIONS OF THE