Патент USA US2409544код для вставки
Oct. l5, 1946. F. czH/lvrFlELDv 2,409,543 . APPARATUS FOR SHRINKING FABRICS Filed Aug. 28, 1944 5 Sheets-Sheet 2 0er. 15, 1946.> F. 'CHATFIELD ' 2,409,543 APPARATUS FOR SHRINKING FABRICS Filed Aug. 28, 1944 3 Sheets-Sheet 3 AvvozNEs/s Patented Oct. 15, 1946 2,409,543 Unirse STATES PATENT OFFICE APPARATUS FOR SHRINKING> FABRICS Franklin Chatñeld, Minneapolis, Minn., assigner to Munsingwear, Inc., Minneapolis, Minn.,` a corporation of Delaware Application August 2s, 1944, serial No. 551,576 10 Claims. (Cl. 26-18.5) 1 This invention relates to an improved appa ratus for shrinking fabrics after they have‘been through the usual processing, following the con struction or knitting of the fabric. In the manufacture of textile fabrics, after the threads or yarns have been knitted or woven or otherwise made into a'fabric, the resultant fab ric is usually processed before> it is made into garments. Such processing may include bleach ing, dyeing, frequent washing and drying, and other Well known operations, during which time the fabric is usually maintained under tension. The tension thus applied to the fabric elongates 2 garments may readily be washed or laundered without any danger of shrinking. An important feature of the present invention therefore is to provide an improved apparatus for pre-shrinking fabrics, comprising means for conveying the fabric along its path of travel with out exerting a pushing or pulling action thereon, the fabric being so manipulated as it travels through the apparatus that a plurality of small folds or Wrinkles are periodically formed in the fabric traversely thereof, which wrinkles are then removed by gently straightening the fabric in the direction of its travel without in any way stretching `or tensioning the fabrics, and whereby the fibers of the threads or yarns beyond their normal condition. Unless the fibers of the yarns 15 the fabric is continually alternately transversely wrinkled and de-wrinkled as a result of such or threads are restored to their normal relaxed periodic transverse folding or wrinkling of the or free condition in the finished fabric, the gar fabric and subsequently straightening it, which ments made from the fabric are very likely to shrink from washing operations. To avoid such permits the fibers of the threads and yarns of subsequent shrinkage of the fabric the fabric is 20 the fabric to freely return to their original free usually put through a pre-shrinking process de relaxed condition, as the material passes through the novel apparatus herein disclosed. signed to restore the threads or yarns, so far as A further object of the invention is to provide possible, to their normal relaxed condition in the such an apparatus of very simple and inexpensive finished fabric, y Various forms of apparatus has heretofore been `utilized to restore the fabric to its normal free construction, comprising a heated chamber hav ing a plurality of tiers `of conveying means ar condition, whereby the garments made therefrom ranged therein each of which comprises a plu will not be likely to shrink when washed, but in most such apparatus the fabric is usually con veyed along its path of travel by a pulling action, rality of spaced rotary conveyer elements adapt ed to receive and convey the fabric along each l tier, and certain of said conveying elements op erating at a relatively higher peripheral speed and in some instances the fabric is simultane than adjacent elements, whereby a plurality of ously, as it moves forwardly, alternately later closely spaced transverse wrinkles or folds are ally expanded and contracted. Such action on the fabric in an attempt to pre-shrink it has not formed inthe fabric each time the fabric is dis proven entirely satisfactory, because in many 35 charged from said higher speed elements onto the conveyer elements, having a relatively slower cases it does not completely restore the threads peripheral speed, and whereby the fabric is con or yarns of the fabric to their normal relaxed tinually alternately wrinkled and de-wrinkled, as condition and, as a result, garments made from it passes through the machine, without exerting such fabrics may shrink when the garments are washed. ‘ 40. a pushing or pulling‘action thereon, which per mits the ñbersof the threads or yarns to readily The novel apparatus hereiny disclosed is the freely return to their original or natural free result of considerable development and experi and relaxed condition, whereby shrinkage in the mental work in an attempt to provide an appa ratus for pre-shrinking fabrics, whereby substan 45 resultant fabric is reduced to the utmost mini tially al1 of the fibers of the threads or yarns of A further object is to provide an apparatus of the fabric are restored to their normal relaxed the class describedcomprising means for alter condition in a simple and efñcient manner, and nately transversely wrinkling and de-wrinkling without exerting a pulling or pushing action on the fabric as it travels through the machine, and the fabric. By thus conveying or feeding the 50 periodically inverting the fabric whereby the web fabric along its path of travel without a pushing or strip of fabric being fed through‘the machine or pulling action, the fabrics of the various is uniformally treated on all sides. threads or yarns of the fabric quickly return to Other objects of the invention reside in the their normal relaxedl and free condition, Where nove1 construction of the apparatus, which come. prises a steam chamber having a plurality of by when the fabric-is made into garments, the mum. ' ` 2,409,543 3 4 tiers of conveying surfaces therein which cooper ate to conv-ey the fabric in a back-and-forth right hand corner of the chamber 2 through a chute i3 as shown in Figure 1. manner through the chamber from one tier to An important feature of the present invention resides in the means provided within the chamber 2 for conveying the material therethrough in a . the next, preferably in a downward direction, and whereby the material is frequently inverted as it travels through the chamber, and at the same free and relaxed condition and without in any time the fabric is subjected to alternate wrinkling and d-e-wrinkling» operations without exerting a pushing or pulling action on the fabric, whereby way exerting a pulling or pushing action there on, whereby the threads constituting the fabric may, as the fabric travels through the chamber, return to their normal relaxed condition, or sub stantially to the condition in which they were be fore being knitted into the fabric. The means provided for thus permitting fibers the fibers of the various threads or yarns con stituting the fabric may freely return .to their original relaxed condition inwvhichV they were before being knit into the fabric, and Where b-y the nnished or completed fabric, or' the‘gar'-> ments made therefrom, aren'ot- likely to shrink to^readilyreturn to their normal relaxed condi tion as the fabric is conveyed through the cham ber 2', is shown comprising a plurality of tiers when the fabric or garments are subsequently of. conveying elements, and each tier is composed washed; in the arrangement-of» the spaced-disks of a plurality of closely arranged rows of disks which constitute the various conveying means ld and' i5. The disks le are relatively smaller in the steam chamber, and in the manner of oper ating said disks whereby the peripheral speed of 20 than the disks I5, and are arranged in groups A, B, C. and D, which groups are separatedr by certain of Said disks may be varied to control the disks l5, as clearly illustrated in Figures 1 the wrinkling and de=wrinkling` actions of the and 5. The peripheries of the disksV M andv I5 disks upon the fabric;> and‘inv the provision of are slightly notched or serrated, as indicated in such an apparatus which is extremely eñicient and practical in operation; and'which may also 25 Figure 5, to minimize slippage ofy the web on the peripheries thereof. In the drawings I have be utilized as a- dryer, in which case all of the shown each group of disks as comprising three conveyer disks of the various tiers of fabric con rows of disks, but it is to be understood that the veying surface may be operated in a manner to number of rows of disks in each group may be cause less Wrinkling and de-wrinkling of the fabric or toeliminate entirely Wrinkling and de 30 variedwithout departing from the scope of the invention. » wrinkling of the fabric, as the» fabric travels The disks of adjacent rows are arranged in through the heated chamber. over-lapping relation, as best illustrated inV Fig ther objects ofthe invention will appear from the following description and the-accompanying ures 1, 3 and 5, whereby the disks of each tier drawings andwill be pointed out in the annexed claims. of such disks cooperate to provide a continuous conveying surface extending substantially from ` In the accompanying drawings there has been one end of the chamber 2 to the other. The disks may be supported within the chamber as indi disclosed av structure designed to carry out the cated in Figure 4, and to facilitate assembling, various objects of the invention, but it is to be understood that the inventionl is not confined to 40 the disks, of each row ofr disks, are preferably secured together as a unit, as shown in Figure 6. the exact features shown, as various changes This may readily beaccomplished by suitably se may be made within the scope of the claims which curing the disks of each row to a tubular member follow. I6, the over-all length of which is such that it vIn the drawings-z ` Figure l is a vertical sectional _view through 45 may readily be fitted between the steam jackets 9 of the side walls 5 and 6 of the chamber 2, as shown in Figures 3 and 4. The disk M isshown secured to suitable shafts ` Figure 2 is an end View of Figure 1 showing | ‘I which extend transversely through the cham~ the' drives for the various tiers of disks; Figure 3 is a sectional planL view substantially 50 ber 2~and suitable openings provided in the steam jackets 9 and have their end portions extending on the line 3--3V of Figure 1; through suitable bearings indicated at I3 and I9 Figure 4 is an enlarged detail sectional View in Figure- 4. on the line ë-ß of Figurev 1; As all of the shafts Il and their supporting ' Figure 5 is an enlarged detail sectional View means are substantially identical in construction, showing the manner of delivering the Web or but one will be described in detail. fabric onto the conveyer disks from the delivery the apparatus shcwing'the'general arrangement ofthe conveying means therein; ’ To facilitate mounting- the shafts and disk units in the chamber 2, suitable spacing sleeves 20 and 2| are shown fitted onto the opposed ends removed from the apparatus. In the selected embodiment' of the invention 60 of the shafts and are received in the bearings I8 and |9, respectively. Each sleeve abuttingly en herein disclosed there is illustrated in Figure vl, gages one end of the tubular member I5. A for purposes of disclosure, a heated chamber 2 bevel gear 23 is shown secured to one end of the defined by upright walls 3, d, 5 andV ii', a top wall shaft and a suitable washer 24 may be inter i and bottom wall 8. The four upright `walls' posed between the hub'of the gear 23 and the >and the top wall ‘i are provided with inner steam adjacent end of the sleeve 20 adapted to engage jackets 9 having suitable steam coils _Il therein, the outer end of the bearing I8 and prevent axial as indicated in Figures 1 and 5, which are con movement of the shaft assembly in one direction. nected to a suitable supply of steam, not shown. A similar washer 25 is provided on- the opposite The outer walls 3 to 3', inclusive, are constructed end ofthe shaft'l‘l and engages the adjacent end of a suitable non-conductive material whereby of the sleeve 2|. A nut 25 is received in threaded the temperature in the chamber may readily be engagement with the end of the shaft and serves retained at‘the desired figure. l to fixedly secure together as a unit, the shaft I1, A suitable‘delivery conveyerî I2 is arranged to disk-supporting member i6, sleeves 20 and 2|, convey the material to be treated into the upper and the Washers 24 and 25, as will readily be conveyer; and ' ’ Figure G is a view showing one of the disk units 2,409,543 6 understood by reference lto Figure 4. The wash ers 24 and 25 prevent endwise movement of the shaft I'I. The above described shaft-supporting means is merely illustrative, as obviously other means may be provided for removably supporting each shaft Il and the disk assembly carried thereon. . or process the fabric in its travel through the chamber, to permit the fabric to shrink to sub stantially its normal condition in which it _was prier tobeing passed through the usual process ing necessary before being delivered to the cham ber ~fior pre-shrinking. ` , Another feature of the invention resides in the manner in which the disks of the various Each row of relatively larger disks I5 are shown tiers are driven so as to cause the web of fabric secured to a similar tubular member I6 mounted on a shaft 28 similar to the shaft I'I. The shafts 10 to travel back-and-forth in the chamber in its passage from the delivery conveyer I2 to the 28 are shown mounted in opposed relation to the discharge conveyer 29. To cause the fabric to shafts I'I, as illustrated in Figure 4, for reasons subsequently to be described. Another important feature of the invention re sides in arranging the disks in a plurality of tiers . of conveying disks within the chamber, or, one. over another, which is so operated as’tc convey the web back-and-forth through the chamber from the upper right hand corner thereof, when viewed as shown in Figure 1, to a suitable dis charge conveyer 29 which conveys the processed or pre-shrunk fabric from the chamber 2 to a suitable receiving means, not shown. By thus passingtheweb from one tier to another in a downward direction, as the fabric travels through the chamber, the web of fabric is periodically in verted, as will readily be understood by reference to figure 1. ' To assist the material to shrink to its normal condition when passing through the chamber a plurality of steam pipes 30 are preferably pro vided over each tier of disks. Each pipe 3l] has a plurality of discharge orifices in its lower wall travel back-and-forth through the chamber 2, the disks of adjacent tiers are driven in opposite directions, as indicated by the arrows in Fgure 1. To thus operate the disks, all of the shafts I‘I cf each tier are shown driven from a shaft 3| mounted in suitable :bearings exteriorally of the casing of the apparatus and having bevel gears 32 therein meshing with the bevel gears 23 se cured to the various shafts Il of each tier, as will b-e best understood by reference to Figure 3. In like manner, the shafts ‘28 of the relatively larger disks I5 are driven by a shaft 33 provided at the opposite side of the apparatus through similar bevel gears 23 and 32. The disks I5 of each row of such disks are secured in ñxed rela tion to a tubular member I5, similar to the ones the disks Irl are secured to and the assemblies of disks l5 are secured to their respective shafts in a manner similar to the assemblies of disks I4, as shown in Figure 4'. To thus reverse the direction of rotation of the disks of adjacent tiers, all of the disks I4 are simultaneously driven by a suitable chain B4 engaging sprockets 35 secured to the shafts 3I. @ne run of the chain 34 engages the sprockets 35 ‘ Another important feature resides in the means in the manner shown in Figure 2, whereby the provided for alternately transversely wrinkling disks of adjacent tiers will rotate in opposite and de-wrinkling the fabric as it travels through the heated chamber 2. To thus alternately wrin 40 directions, 'thereby causing the web to travel in a back-and~forth direction through the chamber kle and de-wrinkle the fabric, the groups of disks 2 as hereinbefore stated. I4 of each tier are rotated at slightly lower periph The shafts I'i are shown driven by a single eral speed than the relatively larger spacing disks chain 3ft having a running connection with a I5. The peripheral speed of the larger disks I5 corresponds substantially to the speed of travel 45 drive sprocket 35 secured to a drive shaft 37 mounted in suitable bearings, not shown. An of the web‘or fabric delivered to the disks I4 idlersprocket 38 is provided adjacent the upper of the first group A by the conveyer I2. Because end of the chain 34 to prevent outer run of of the peripheral speed of the disks I4 being adapted to direct hot steam against the fabric as it is conveyed back-and-forth through the chamber by the tiers of disks I4 Vand I5. lower than the delivery of the material thereto, the chain engaging the sprockets 35. rf‘he shafts 33 which operate the relatively a plurality of small transverse wrinkles or folds 60 larger disks I5 are each provided at one end are formed in the fabric as it is delivered thereto, with a sprocket 39 having running connections with a chain 4I similar to the chain 34 provided at the opposite side of the apparatus. The shafts 33 and bevel gear drives connecting pushing »action on the fabric, whereby the fabric 55 them with their respective shafts 28 are best remains in a wrinkled condition as it travels ’over shown in Figure 3. The lower portion of the the disks of each group A, B, C, or D. chain 4I as a running connection with a When the web of fabric engages the perípheries sprocket 42; secured to a shaft 43 which in turn ci the relatively larger disks I5 from group A of the smaller disks I4, the wrinkles therein are 60 is driven by a chain 44 from a variable speed unit, generally designated by the numeral 45. removed as a result of the relatively higher The variable speed unit 45 is driven from the peripheral speed of the disks I5, as shown in drive shaft 31 by a shaft 46 through suitable Figure 5. As the web is delivered from the peri-` bevel gear drives 41, as indicated in Figure 3. pheries of the disks I5 onto the next adjacent group B of disks I4, the web lis again trans 65 'ljhe drive shaft 3l may be driven from a suit as best indicated in Figure 5. The wrinkled fabric is carried from one row of disks I4 to the next of each such group without exerting a pulling or versely wrinkled. Such periodic wrinkling and de-wrinkling of the fabric `continues until the fabric is delivered onto the receiving conveyer 29, and at the same time both sides of the fabric are continuously being subjected to the hot steam 70 ischarging from the pipes 30, as a result of the fabric being inverted each time it is delivered from one tier of disks onto the next. The number of tiers of'disks and the length of the chamber 2 are such as to sufficiently treat` able motor 48. ‘ The peripheral speed of the disks I5 is im portant with relation to the traveling speed of the conveyer belt I2, ybecause the disks I5 must remove or transfer the fabric from the groups of smaller disks I4 to adjacent groups at identi cally the same speed asthe fabric is delivered onto the first group Aof disks I4 ‘from the con veyer I2. Should the `conveyer I2 deliver the fabric to the first group A faster than it is re 2,409,543: 7 moved therefrom «by the adjacent-rowcf disks I5, the fabric.willveventually pile up or accumulate on the disks It; On the other hand, should the disks I5 remove the fabric from the first group of ‘disks Ill- faster than it is deliveredthereto by the conveyer i2, the fabric would'be placed under az-tensionwhich would defeat one of the objects of thel present' invention. It is therefore essen tial that- the speed of' the> conveyer I2 and the bythe fabric is inverted,` aswill be understood. byreference to Figure l. The opposite side of the fabric is then exposed to the steam discharg ing from theLdistributing pipes. 30 interposed be tweenthedirsi;- and secondtiers of ’conveyer'disks The fabric thus continues to travel back-and forth and' downwardly. through the chamber ‘2. untilit is. delivered-onto. the discharge conveyer 29; which removes. it'V from’ the chamber 2 for peripheralrspeed of the disksl IE’ìbe synchronized l() delivery onto- a suitable receiving means, not and sofrelated` tothe Vspeed of the disks I4 that shown. the material, when delivered onto each group of From the foregoing it will-be noted that the disks lli, will be> transversely wrinkled or folded as shown in Figure 5, and when the material en gagesY the peripheries' of the relatively larger disksfI 5, such wrinkles or folds are removed from the web, as shown in Figure 5. For practical purposes the conveyer I2 may be driven directly from the secondary drive shaft 4-31 of the relatively larger disks I5, whereby it will operate in timed‘relation thereto. To thus drive the conveyer I2 from the sec disks and the novelfmannerïinwhich they are driven provides aconveying means Within the chamber" 12 capable of conveying the fabric through the chamberfwithout imparting any pull* ing'or. pushing actionsthereon, and by. repeatedly wrinkling and de-wrinkling the fabric, and in verting- it» as it travels through the chamber 2, all- of the'fibers of tlielvarious threads. constitut ing the body of the fabric are so "worked” or flexed that they- gradually> return to their normal’ ondary drivefshaft «i3- and4 upright shaft Q9 is more or less crinkled condition whichcauses the shown having itslower end drivingly connected fabric to shrinksufliciently in its passage through to the shaft by suitable bevel gears 5i, and 25 the chamber 2', that when it is subsequently made the upperend ofthe shaft fail is connected to the into garmentathe garments areY not’. likely to shaft~52of theupper end ofthe conveyer l2 by shrink asa result of washing and'laundering. similar' bevel gears 53; By varying the relative speed of the disks I 4 All of the disks Iii in the various tiers operate and i5; the apparatus mayy be used for pre at the same speed, and their speed is determined shrinking fabricsoffvarious kinds, it being under by the Írate of speed at which the fabric may be stood that' some ‘fabrics have a tendency'to shrink conveyed through the chamber» 2- to obtain the more than others. desired results. With a gir/_en fabric, the disks Iii The' novel apparatus-«herein disclosed may also may rotate at a constant speed, the disks in ad be used" as a dryer for" drying fabrics received jacent tiers rotating in opposite directions, as from a washer orsome other wet processing op indicatedby- the arrows in Figure l, which is ac erations. complished byl the chain- drive shown at the left WhenVI so utilized all of the disks I4-and I5 of hand'side of Figure 2. each-tier may» be operated at the same peripheral The variable rspeed unit 45 is important in that speed'and at a speed substantiallyy equal to the it makes-it possible to readily and conveniently 40 delivery of the Afabr-ic to the upper tiers of disks control’ the degree of wrinkling or transverse from the conveyer I2î.î When the disks are oper folding of the fabric as it is delivered to each disk group A, B, C and- D. In other words, the speed of the secondary drive shaft ¿3 may readily and conveniently be controlled to vary the size of the wrinkles or folds te that best suited for the particular fabric being pre-shrunk in its passage through the chamber 2. The variable speed unit d5 maybe of any well known construction ap plicable for the purpose. In the operation ofthe novel apparatus here in disclosed, the fabric is delivered onto the first group A of disksv I4 by the conveyer I2, usually ated- at the same peripheral speed the web of fabric is-fed through the chamber 2 in a-iiat> con dition, and`iscontinuously inverted as it passes ï“ from one tier'of disks onto the next in its travel downwardly through the chamber to the dis charge' conveyer 29S.' . It is also to be understocd‘thatwhen used as a drier the supply ofî steam to the pipes Sil'is shut off‘ whereby the» chamber will contain amore or less-dry‘heat. To increase the eiiiciency of the apparatus-as a dryer, a plurality of suitable air nozzles Eli; 55' and 56 may be provided'at one end of‘the» chamber 2i adapted to direct blasts of ‘i heated air between adjacent tiers of disksfrom in a wet condition. As it is delivered thereto it is transversely wrinkled or folded, as best shown in Figure 5, in which condition it passes from one end of the chamber. Similar nozzles 5?? and one row of disks it onto the next' in group A, 58 may be »provided at the opposite end-0f the until it engages the peripheries of the adjacent chamber adapted to direct blasts of heated air row of relatively larger disks I5. The disks I5 between other tiers of disks. The heated air thus pick up the material from group A and trans 60:1 directedibetween the various tiers of disks may fer or deliver it onto the'disks ofl group B at a exhaust througha sui-table vent 5s connected with relatively higher speed than the travel'. of the fabric over the disks i4, whereby the transverse wrinkles orf folds in the fabric are momentarily removed from the fabric. The fabric, however, is again wrinkled when it is delivered onto the disks of group B, and when passing from group B'to group C, it is again de-wrinkled. In this manner the fabric is continuouslyv alternately wrinkled and de-wrinkledï as itpasses over each tierl of conveyer disksand at Vthe same time it is subjected to the steam discharging from the steam distributing pipes 30. the interior ofthe chamber 2, as, for example, throughthe upper wall l. Heated air may be supplied tothe chamber through the nozzles 54 to 58, inclusive, by a suitable air circulating means orffan, not shownv in the drawings. It willV be apparent to those skilled in the art that I'have'accomplished at least the principal objects of my invention, and it will also be ap parent to those skilled in the art that the embodi ments hereinidescribed‘ may be variously changed and modiñed without departing from the spirit of the invention,- and that the invention is cap able of usesand has advantages not herein spe From the upper tier of disks the material is delivered onto thenext lower tier of disks where 75 ciñcally described; hence. it willbe appreciated 2,409,543 9 j that the herein disclosed embodiments are illusn trative'only, and that my invention is not limited ripheral speed than the intervening rows of disks, whereby said disks will alternately condense and thereto. expand the fabric as it passes through the steam chamber, and means for reversing the traveling movement of the fabric through the chamber and ' I claim as my invention: l. In an apparatus for shrinking textile fabrics, a steam chamber, a plurality of closely spaced simultaneously inverting it. rotatable disks in said chamber, all of said disks 6. In an apparatus of the class described, a being disposed beneath the path of travel of the ‘ steam chamber, a plurality of vertically spaced fabric and having their peripheries arranged Vto tiers of shafts, the shafts of each tier being ar convey the fabric through the chamber in a slack 10 ranged in spaced parallel relation, a plurality of and relaxed condition and without exerting a disks secured to each shaft of each tier and dis pushing or pulling action thereon, certain of said posed in spaced relation on their respective shafts, disks having a relatively higher periphera1 speed the disks of said tiers of shafts having serrated than others and cooperating with said other disks edges cooperating to provide a plurality of ver to continually alternately transversely wrinkle 15 tically spaced conveying surfaces adapted to con and dewrinkle the fabric as it passes through the vey the fabric through the chamber without ex chamber. erting a pushing or, pulling action thereon, and 2. In an apparatus of the class described, a means for simultaneously driving alternate tiers -steam chamber, a plurality of shafts mounted in of said shafts in one direction and the shafts of said chamber in spaced parallel relation, a plu 20 the remaining tiers in the opposite direction, rality of disks secured to each shaft and arranged whereby the fabric will have a back-and-forth in closely spaced relation thereon, the marginal travel through the chamber, and all of the disks edges of the disks of each adjacent pair of shafts constituting each conveying surface being dis being disposed in overlapping relation, and the pe posed beneath the path of travel of the fabric ripheries of all of said disks cooperating to con 25 being conveyed thereby, whereby the fabric is vey the fabric through the chamber in a free and conveyed over each conveying surface with a relaxed condition and without exerting a push wavy»like motion and with the fabric completely ing or pulling action thereon. relaxed throughout its travel. 3. In an apparatus of the class described, a 7. In an apparatus of the class described, a steam chamber, a plurality of shafts mounted in 30 steam chamber, a plurality of vertically spaced said chamber in spaced parallel relation, a plu tiers of shafts, the shafts of each tier being rality of disks secured to each shaft and arranged arranged in spaced parallel relation, a plurality in closely spaced relation thereon and whereby of disks secured to each shaft of each tier and said disks are disposed in rows transverselyof the disposed in spaced relation on their respective chamber, the marginal edges of the disks of each 35 shafts, the disks of said tiers of shafts cooperat adjacent pair of shafts being disposed in stag» gered and overlapping relation, the peripheries of ing to provide a plurality of vertically spaced conveying surfaces adapted to convey the fabric through the chamber without exerting a pushing through the chamber in a free and relaxed con or pulling action thereon, and means for simul dition and without exerting a pushing or pulling 40 taneously driving alternate tiers of said shafts in action thereon, and spaced rows of said disks op~ one direction and the shaftsl of the remaining erating at a relatively higher speed than the in tiers in the opposite direction, whereby the fabric tervening rows of disks, whereby all of said rows Will have a back-and-forth travel through the of disks will cooperate to continually alternately chamber, and certain rows of disks in each tier transversely wrinkle and dewrinkle the fabric as being relatively larger in diameter than the disks it passes through the chamber. of adjacent rows in said tier and having a rela» all of said disks cooperating to convey the fabric 4. In an apparatus of the class described, a steam chamber, a plurality of shafts mounted in said chamber in spaced parallel relation, a plu rality of disks secured to each shaft and arranged 50 tively higher peripheral speed than the adjacent smaller-disks, whereby all of said disks will co operate to continuously alternately condense and expand the fabric along its length as it passes in closely spaced relation thereon, the marginal edges of the disks of each adjacent pair of shafts being disposed in staggered and overlapping rela tion, the peripheries of all of said disks cooperat ing to convey the fabric through the chamber in 55 a free and relaxed condition and without exerting through the chamber. a pushing or pulling action thereon, spaced rows disposed in spaced relation on their respective shafts, the disks of said tiers of shafts cooperat ing to provide a plurality of vertically spaced con veying surfaces adapted to convey the fabric of said disks being relatively larger in diameter and having a relatively higher peripheral speed than the intervening rows of disks, whereby said disks will alternately condense and expand the 60 8. In an apparatus of the class described, a steam chamber, a plurality of vertically spaced tiers of shafts, the shafts of each tier being arranged in spaced parallel relation, a plurality of disks secured to each shaft of each tier and through the chamber without exerting a pushing fabric as it passes through the steam chamber. or pulling action thereon, means for simultane 5. In an apparatus of the class described, a ously driving alternate tiers of said shafts in one steam chamber, a plurality of shafts mounted in said chamber in spaced parallel relation, a plu 65 direction and the shafts of the remaining tiers rality of disks secured to each shaft and arranged in the opposite direction, whereby the fabric will in closely spaced relation thereon, the marginal have a back-and-forth travel through the cham edges of the disks of each adjacent pair of shafts ber, certain rows of disks in each tier being rela being disposed in staggered and overlapping rela tively larger in diameter than the disks of adja tion, the peripheries of all of said disks cooperat 70 cent rows in said tier, and means for varying the ing to convey the fabric through the chamber in speed of said larger disks independently of the a free and relaxed co-ndition and without exert smaller disks whereby the peripheral speed of ing a pushing or pulling action thereon, spaced the larger disks may be so controlled relative to rows of said disks being relatively larger in the peripheral speed of the smaller disks as to diameter and having a relatively higher pe 75 cause all of said disks to continually alternately 2,409,543 11 12 transversely wrinkle and dewrinkle the fabric as 10. In an apparatus for shrinking fabrics, a steam chamber, a plurality of shafts mounted in groups thereon, a single spacer shaft separating each adjacent pair of said groups of shafts, a plurality of like disks mounted on the shafts of it passes through the machine. « 9. In an apparatus for shrinking fabrics, steam chamber, a plurality of shafts mounted in groups therein, a single spacer shaft separating each adjacent pair 0f said groups of shafts, a plu rality of like disks mounted on the shafts of each group and spaced apart lengthwise of their re spective shafts, a plurality of relatively larger dsks secured to said spacer Shafts, means for driving all of the shafts at the saine time and in a direction to feed the fabric through the charn ber, means for feeding the fabric into feeding contact with the peripheries of said smaller disks at a faster rate oi speed than the peripheral speed of said disks, whereby a plurality of rela~ tively small transverse folds ,or wrinkles are mo mentarily formed in the fabric, and means whereby the peripheral speed of the larger disks may be made relatively greater than the periph eral speed of the smaller disks, whereby the fabric is partially elongated each time it passes over a row of said larger disks from one disk row to the each group and spaced apart lengthwise of their respective shafts, a plurality of relatively larger disks secured to said spacer shafts, means for driving all of the shafts of said group at a given speed and in a direction to feed the fabric through the chamber, means for driving the spacer shafts at a relatively higher speed than the remaining shafts, means for feeding the fabric into feeding contact with the peripheries of said smaller disks at a faster rate of speed than the peripheral speed of said disks, whereby the fabric is condensed or transversely wrinkled, and said large disks oper ating -to convey the fabric from the disks of one shaft group to the disks of an adjacent shaft group at a relatively higher feeding speed whereby the fabric is extended or dewrinkled as it is fed from one disk group to the next, said larger disks and groups of disks cooperating to continually alternately transversely Wrinkle and dewrinkle next, and whereby said smaller and larger disks will cooperate to continuously alternately con 25 the fabric as it travels through the chamber. dense and expand the fabric as it travels through the machine. FRANKLIN CHATFIELD. '