Патент USA US2412357код для вставки
Dec. 10, 1946. E, B, ROBINSON ' 2,412,357 DRAWING FRAME STRUCTURE Filed Dec. 17, 1943. 4 Sheets-Sheet 1 # Zhmnto: : 5} -Z [iv/N5. kobmsolv Dec. 10,1946. 5, B, RoBmsoN v 2,412,357 DRAWING FRAME STRUCTURE Filed Dec. 17, 1945 4 Sheets-Sheet 2 EL w/v B. Poe/mow 3nventor Bu Dec._ 10, 1946. E. B. ROBVINSON _ 7 2,412,357 DRAWING FRAME STRUCTURE Filed Dec. 17, ‘1943' 4 Sheets-Sheet 5 \—-I=-; Q 30 k 44 % J, Q 1251 \ ) . El v/NB. P031M011 3nventor \ . '0 attorne-g Dec. 10, 1946. E, B, R0B|N$QN 2,412,357 DRAWING FRAME STRUCTURE Filed Dec. 17, 1943 4 Sheets-Sheet 4 0 /04 02' ll/ [/2 529-7 62 WM 5. Ros/mom Patented Dec. 10, 1946 v 2,412,357 UNITED STATES PATENT "OFFICE, DRAWING FRAME STRUCTURE Elvin B. Robinson, Gastonia, N. C., assignor of one-third to Clarence J. Costner and onesthird to Arnold W. Kincaid, both 01’ Bessemer City, N. C. Application December 17, ‘1943, Serial No‘. 5143605 4 Claims. This invention relates to an improved type of drawing frame and more especially to an im proved method for mounting the ends of the top rolls and for mounting the roller necks joining _ (01. 19-130) \ 2 a single section of a second awing frame. The ?rst drawing frame is called t e breaker drawing, and the second step is the\?nished drawing. From the ?nished drawing frame the slivers are passed through slubbers. In ?ne work, after the sections of the bottom rolls together, so as to prevent undue wear of the bearings supporting passing through the ?nished drawing frame, the the ?uted rolls of the drawing frame, and thus slivers are passed through the slubbers, and de providing a drawing frame which will turn out posited on bobbins, which slubbers can also be very much better work than a drawing frame called a rovingr frame. These slivers are usually equipped with the vconventional type of bear 10 passed single through the slubber or roving frame. ings which wear out rather rapidly, and when Then, if desired. they may be again passed so worn, results in imperfect work. through a second slubber or intermediate which It is an object of this invention to provide an is another drawing frame where they are de improved drawing frame having an improved posited on bobbins again. In both of these last type of ‘bearing for the ends of the top rolls and 15 named steps, there is some twisting imparted to an improved bearing for the roller necks joining the slivers as both of them employ a ?yer. After the sections of the bottom rolls together, so as these four steps, the’ product is passed over the to provide bearings between the bottom and top spinning frame where it is twisted into a thread, rolls which are not subject to rapid wear such as and then it is usually passed through twisters for the conventional type of rolls in drawing frames 20 twisting a number of the threads together to heretofore used. make the ?nished yarn. It is another object of this invention to pro One important advantage of a needle or roller vide an improved type of drawing frame, where bearing is that the outer shell turns very little, in needle bearings are provided for the bearing if at all, and this prevents wear' between the portions of the ?uted rolls, and also means are 25 contacting surfaces of the outer shells, thus spac provided which are quickly detachable from the ing the top and bottom rolls at a de?nite distance bearings of the top rolls to allow quick dismantling all the time; whereas, in the old type of draw of the top rolls from their operating position ing frames, there were bosses on both the top and when it is desired to do so. bottom rolls contacting each other, and due to It is another object of this invention to provide 30 the fact that there is a lot of grit and other an improved type of drawing frame wherein a plu abrasive substances in cotton, this is deposited on rality of slivers are passed through a plurality of these bosses, resulting in rapid wear, and also sections of a drawing frame simultaneously, and creating a considerable amount of friction. instead of being coiled into a can to be later fed When these‘ bosses become worn, it results in im through another drawing frame having ?uted 35 perfect products by allowing the ?utes of the two rollers thereon, the slivers after passing through rolls to be too close together, and thus become the sections of the ?rst drawing frame are led too deeply enmeshed with each other, resulting directly into a second drawing frame where a in damage and often breaking of the ?bers, and plurality of slivers emanating from the sections disrupting the whole purpose'of awing, which of the ?rst drawing frame are passed through a 40 is the parallelization and atteir tion ‘of the section of another drawing frame, and joined into ?bers. ‘ 1 one sliver or roving, thus dispensing with the Due to the fact that in the old style drawing many operations heretofore required in trans frames, there is considerable friction and drag, ferring cans of slivers from one drawing frame these drawing frames could not be speeded up in to the intake end of another drawing frame. the same manner that a drawing frame with A drawing frame is usually composed of four ball ‘bearings, because in the old1 style frames, to six sections of top and bottom rolls, and they when they were attempted to be speeded up, .a take the slivers from cans which have received great amount of vibration occurs, due to friction the slivers from the card. Usually from four to and drag on the moving parts. » K six slivers are run through each of the four to 50 As above-stated, the bosses or collars on the six sections of the ?rst drawing frame, and these bottom and top rolls which hold5 these rolls are combined, and passed through a trumpet or a de?nite distance apart, some‘ become worn coiling mechanism, and are deposited as a single which requires that these bosses begrou? 2d away; sliver into cans. In the second operation, the and suitable collars of proper diameter l e swaged slivers from four ‘to six cans are passed through 55 thereon, so as to hold the topiand bo tom rolls 2,412,357 \ i r 4 s drawing frame constructed in accordance with a proper distance apart, but, of course, these col lars soon become worn, and due to the fact my invention; I Figure 2 is an elevation of the right-hand end that for each set of bottom and top rolls, there " of the lower portion'of Figure 1, and being shown are four collars, and since'it'" is impossible to partly in section, and being along the line 2-2 provide four collars which will present the same in Figure 1; wearing qualities, these collars wear to different Figure 3 is a view partly in elevation and partly diameters, and thus result in improper driving of in vertical section and taken along the line 3--3 the top roll. In drawing frames, the top roll‘is in Figure 2; driven by the bottom roll since the ?bers passing Figure 4 is a vertical sectional view through between the top and bottom rolls presents the 10 one of the needle bearings, and being taken sub proper amount of friction, and this drives the top stantially along the line 4--4 in Figure 3; roll in timed relation to the bottom roll. In the Figure 5 is a top plan view, partly schematic, old style drawing frame, due to the great amount of an improved system of handling slivers by pass of friction between the collars on the rolls, since ing them from one frame to another frame with the top rolls are under tremendous pressure by out the intermediate step of coiling into a can; suitable weights or spring means, there results Figure 6 is a view similar to Figure 3 showing three driving points for each of the top rolls, another embodiment of the invention; namely, the driving by the ?utes of the bottom Figure '7 is a View similar to Figure 6 showing roll engaging the slivers, and moving the slivers and top rolls along at the same speed as the bot 20 the bottom bearing as two separate bearings; Figure 8 is a vertical sectional view through the tom roll, and also each of the collars on the lower lower bearings in Figures 6 and 7. roll exert a driving effect on the collars on the Referring more speci?cally to the drawings, the top rolls, and it is evident that when these bosses numeral l0 indicates a drawing frame roll stand or collars wear tov different diameters, that prob ably one end 1 of one of the top rolls will be 25 having a plurality of bearings ll, l2, l3, and I4, which bearings are held in place and in adjusted driven at a greater rate than the other, or at relation along slots l?b extending from near one a lesser rate that the other, depending upon end to the other of the upper portion Illa of the the wear between the collars at the end of the roll stand Ill by means of bolts l5, l6, l1, and H3. rolls. This results in biting and cutting of the lower rolls 20 of the drawing frame are ?bers, and affecting the staple length of the ?bers 30 The joined together by a suitable roller neck ‘M which by shortening the staples. It is evident that in a usually has tapered ends 22 ?tting into tapered drawing frame equipped with anti-friction bear , cavities 23 and locked in position by any suitable ings, such as roller bearings or ball bearings, as means. Surrounding the roller neck 2| is‘a nee shown in the drawings, the sole driving means dle bearing comprising a shell 25 having down 35 for the top rolls is through the medium of the turned ends 26 which loosely con?ne a plurality ?bers passing between the top and bottom rolls. of pins or rollers 21, and an oil hole 28 is pro- , Since the ends of the rolls do not contact each vided, by means of which lubricant can be intro other at all, but run free in their anti-friction duced into the interior of the bearing shell 25. bearings, because it is evident that a tremendous The top ?uted rolls 30 have a bearing portion pressure which was formerly exerted on the 40 3| which is usually integral with the rolls 30, and collar is now exerted on the shells 32 and 25, thus a needle bearing shell 32 surrounds this bearing ' making it impossible for any driving action to be portion 3! in spaced relation thereto, and has imparted to the ends of the top rolls. downturned ends 33 which loosely con?ne a‘ plu Another important advantage of the structure rality of rollers 3G to provide a needle bearing shown in the drawings is that in the old type ‘ around the bearing portion 3|. A suitable lubri cating hole 36 is provided in one of the down on the ends of'the top rolls was transmitted turned ?anged portions 33 for the introduction through the collars directly to the roller necks of of lubricant to the interior of the needle bearing the bottom rolls, and the bearings in the roll 50 shell 32. A large headed screw 31 is threadably stands supporting the roller necks. This meant embedded in the outer end of the bearing por drawing frame, the tremendous pressure exerted that the bottom rolls had tremendous pressure exerted on their hearing points, namely the roller necks where the roller necks contacted the tion 3| for. loosely con?ning the shell 32 on the end of the roller bearing portion 3| of top roll 30. The‘ needle bearing shells 32 and 25 provide bearings, this resulting in rapid wear of the bear bearing surfaces of predetermined diameter to ings for the roller necks, and also requiring a hold the rolls 20 and 30 in proper spaced rela greatly increased amount of power to drive the tion, because heretofore instead of these needle drawing frame, since the roller necks were pressed bearings, there were provided enlargements on against their bearings with tremendous pressure the rolls which held the rolls a de?nite distance exerted on the top rolls. By means of the anti 60 apart from each other, and allowed the ?utes friction bearings on the top and bottom rolls, thereon to properly engage each other the de it is evident that both top and bottom rolls rotate sired amount, and when these enlargements be freely in their bearings without this tremendous came worn, which theydid quite frequently, the pressure heretofore exerted on the old type frames ?uted rollers 20 and 30 would be allowed to ride on the bottom roll bearings. too close together, thus damaging the slivers and Another important advantage of the construc producing imperfect work. By having the needle tion shown in the drawings is that the rapid wear hearings on the top and bottom rolls, this exces heretofore present in the old style drawing sive wear is eliminated, and more perfect work frames is eliminated since abrasive substances cannot enter the anti-friction bearings. , Some of the objects of the invention having been ‘stated, other objects will appear as the description proceeds, when taken in connection with the accompanying drawings, in which-— is the result. 70 tained. Also much greater speed is ob ‘ " The top rolls are held in‘pr'oper position by means of a bearing block 40 having a well 4| therein adapted to slidably receive a rod 42 which is adjustably secured along a slot- 43 in a bar Figure 1 is a top plan view of one section of a 75 44, by means of the rod 42 being threaded and 2,412,857 6 ous rollers at different speeds, the back roller be ing driven at a given speed, and the next to the having knurled nuts 45 and 46 threadably secured thereon, and said rods at their upper ends hav back roller has a greater speed, and the next to ' ing a knurled portion 41 so that the rod or bolt the front roller has still a greater speed, and the or screw 42 can be held while it is being adjusted vertically. The rod or screw 42 is penetrated 5 front roller has the greatest speed which results in a gradual attenuation of the ?bers. Figure 5 by a pin 48 and between pin 48 and the upper surface of the bearing member 40, there is dis posed a compression spring 49 for urging the bearing member 40 downwardly against the bear ing sleeve 32. The lower end of screw 42 has 10 a plate 35 secured thereon by means of a screw shows in plan and partially schematically how the single slivers resulting from a combined drawing of slivers A to F inclusive are combined into single slivers such as G, H, I, J, K, and L. Heretofore, these slivers have been deposited into suitable containers, and these containers are then moved to the intake end of another draw ing frame where they are introduced into the rear roller of such drawing frame. In Figure 5, I show a section of six sets of top and bottom rollers of a drawing frame in combination with an additional set of rollers forming a second drawing frame. The shaft 10 has a pulley 63 20 mounted thereon which is connected by any suit 38, and a sleeve 39 loosely mounted around screw 42 is threadably secured in the upper end of cavity 4| to prevent separation of screw 42 and bearing member 40 except when the sleeve 39 is 15 removed. The member 44 is pivoted as at 52to the portion Ill of the roll stand, and is L-shaped and its forward free end is held in the position shown by means of a link 53 pivoted as at 54 to the roll stand I0, and having a slot in its upper end adapted to ?t over the free end of the mem ber 44. It will be noted that member 44 has an upwardly sloping surface 55 which prevents the link 53 from jarring off the end of member 44, but when it is desired to release pressure on all of the top rolls, the member 44 can be pressed downwardly at its free end to allow the link 53 to be released and after which the entire member 44 can be pivoted as at 52 to remove the entire assembly 40 to 49 inclusive from engagement with the sleeve bearings 32. _ ' The roll stands I0 project outwardly, and have able means such as belt ‘I2 to a pulley ‘l3 dis posed on a shaft ‘I4 which has a pulley 15 there on on which a belt ‘I6 is mounted which leads to a pulley 11 mounted on shaft 18, and shaft 18 has another pulley ‘I9 with a belt 60 thereon, which belt is also mounted on a pulley III on motor shaft 82 extending from motor 83. The shaft 82 also has a pulley 84 thereon on which ,a belt 85 is mounted, which belt also is mounted on a pulley 86 disposed on a shaft 81 which drives a pair of rollers 88 and 89 for coiling the slivers . G to L inclusive through a trumpet 90 and de mounted therein a, pair of rollers 60 and 6| with positing the sliver passing through the trumpet a suitable trumpet 62 through which the slivers are coiled after being attenuated by passing through the drawing frame section.‘ The slivers are indicated by reference characters A, B, C, D, E, and F. The rollers 66 and 6| have their '90 into a suitable container, not shown. The con tacting surfaces of rollers 88 and 89 are driven in the same direction by means of a gear 92 on contacting surfaces driven in the same direction roller 88 meshing with cavities 6| in the-end of the roller 89. The shaft 18 leads into a suitable gear housing 93 which drives the rollers in the by means of the driven roller 60 having cavities 40 same manner as previously described, and the 56 which are engaged by the teeth 'of pinion 51 same reference characters will apply to these on roller 6|, the power to these rollers being rollers as to the rollers previously described, and transmitted through a driven shaft 58. the structure is approximately the same. It is thus seen that six sets of six slivers each It sometimes happens that the top rolls lap up, that is, the ?bers adhere to the ?utes instead 45 are incorporated into six slivers, and these slivers instead of being deposited in cans, and then of the ?bers being passed on through between transferred manually and fed into another draw the bottom and top rolls. A portion at least of ing frame, are led directly from the ?rst draw the slivers wind up around a top roll which means ing frame to a second drawing frame, thus re that the machine must be stopped, and this lap sulting in a single silver or roving resulting from up removed. I have provided suitable stop mo tion or alarm means shown schematically in Fig thirty-six slivers in the original drawing frame ure 3 as being associated with each of the bear without the necessity of manual transfer, and thus greatly speeding up operation. I ing members 40, and although I have shown it in association with only one bearing member, it It is also seen that very much greater speed is evident that each bearing member 40 in the ' can be obtained on account of the roller bear machine would be connected up in parallel in a ings, as friction is reduced to thus eliminate vibra stop motion or alarm system. This stop motion tion at high speeds. It has long been recognized or alarm system comprises an insulation block that the slow speed at which the slivers are 63 secured to each bearing block and having a passed through a drawing frame was unneces contact point 64 thereon. Suitably secured in 60 sary as far as the drawing process is concerned, ?xed or resilient position above the contact point but such slow speed resulted from the fact that 64 is a contact point 65 from which a wire 66 leads to a. source of electrical energy 61, and then to a buzzer 68, and this buzzer 68 could be a suit able stop motion mechanism. From the buzzer or stop motion mechanism 68, a wire I69 leads back to contact point 64. It is thus seen that when a lap up occurs, the bearing 40 will be raised, which will ‘elevate contact point 64 into engagement with contact point 65 which will stop the machine, or give a suitable alarm. As is well known in the art, the bottom rolls 'of a drawing frame are driven by any suitable means such as power being applied through a shaft 10 into a housing 1| which drives vari on account of the great amount of friction in the bearings of the drawing rolls vibration set in and interfered with proper drawing of the slivers. ', By a mechanism as shown and described, the speed at which the slivers can be passed through the drawing frames can be very greatly increased, thus resulting in a large increase in output from a given number of machines. In employing the method and apparatus as shown in Figure 5, instead of having a trumpet 62 and rollers 60 and 6|, the slivers are guided through a suitable eye I62 and then by means of suitable troughs, not shown, to back rollers 30 75. of the second drawing frame. 2,412,857 In Figures 6, 7, and 8, there is shown a type clusive. This means that in all probability, the‘ of bearing for the lower rolls and for the ends said outer races will not rotate at all, and 'con sequently, no wear will be present in the bear? of the top rolls similar to the structure shown ‘ in Figures 3 and 4 except that the bearings ings 40 and “to I4 inclusive. Also, it is evident‘ have inner races ‘as well as outer races- In these that the tremendous pressure exerted by upper bearings 40 will not be exerted on the necks I00 and H0, because the outer races will not change ?gures, the same reference characters 20 indi cate the lower rolls, 30 the top rolls, 4!] the bear ings pressing down on the top rolls, portion Illa - their shape under pressure, and therefore, the of the roll stand, bearing I2, slots I01), and bolts top and bottom rolls will run freely without hav I6 which have been previously described. In Fig 10 ing to carry this pressure load. ures 6, '7, and 8, the bearings are shown as hav In the drawings and speci?cation, there has been set forth a preferred embodiment of the attached by swaging or otherwise a?ixing the invention, and although speci?c terms are em inner race onto the roll. The top rolls 30 have ployed, they are used in a generic and descrip-_ a roller neck I00 onto which an inner race IBI 15 tive sense only and not for purposes of limita is ?xedly secured by any suitable means such as tion, the scope of the invention being de?ned in swaging, and this inner race has upturned ?anges the claims. ' I claim: \ I 02 at each end for con?ning rollers I03. Rotat ably mounted over the rollers I03 isan outer race 1. In a drawing frame having top and bottom I04 having inwardly turned ?anges I05 at its rolls, roller necks joining the bottom rolls in an ends for assisting in the con?ning of the rollers end to end relation, anti-friction bearings dis I03. A suitable oil hole I06 is provided for in posed around the roller necks and a plurality of troducing lubricant into the space between the adjustable bearing members in which the outer ing inner and outer races, so that they can be inner and outer races. peripheries of the anti-friction bearings rest, the In Figure 6, I show an elongated bearing for the roller neck H0 join 25 top rolls having anti-friction bearings mounted ing the ends of the lower rolls 20 together. This on their outer ends, downwardly urged means for roller neck has tapered portions III. ?tting into engaging and applying pressure on the upper tapered cavities H2 in the proximate ends of the portions of the anti-friction bearings 0n the lower rolls 20 which are suitably con?ned such ends. of the top rolls to hold the periphery of a as by keys, not shown, so that power delivered to 30 the anti-friction bearings on the roller necks one end of the bottom rolls will rotate all sections and those on the ends of the top rolls in contact of the bottom rolls. Fixedly secured on the roller with each other, the diameters of the anti-fric tion bearings being such as to hold the top and neck H0 by swaging or otherwise, is an inner race H3 having outwardly projecting circular bottom rolls in a de?nite/I?terengaging relation ?anges H4 for assisting in con?ning rollers H5. 35 to each other, and to serve as spacing bosses for the top and bottom rolls, the downwardly urged Loosely mounted around the rollers H5 is an means also preventing the rotation of the anti outer race H6 having inwardly turned ends H‘! friction bearings relative to each other. _ ' for assisting the outwardly turned ends H4 of the inner race in loosely con?ning the vrollers 2. In a drawing frame having top and bottom H5. The outer race H1 rests in a rotatable 40 rolls, roller necks joining the bottom rolls in an manner in one of the semi-circular bearings H end to end relation, anti-friction bearings dis posed around the roller necks and a plurality of to I4 inclusive on the portion Illa of the roll adjustable bearing members in which the outer stand. Outer race I I6 has an oil hole H8 for in peripheries of the anti-friction bearings rest, troducing lubricant into the space between the the top rolls having anti-friction bearings inner and outer races. mounted on their outer ends, downwardly urged In Figure 7, the bearings for the ends of the means for engaging the upper portions of the top rolls are identical to the bearings for the anti-friction bearings on the ends of the top ends of the top rolls shown in Figure 6, and like reference characters will apply, and the roller rolls to hold the periphery of the anti-friction necks H0 are identical as well as the tapered‘ 50 bearings on the roller necks and those in» the ends I I I going into cavities I I2 in the lower rolls ends of the top. rolls in contact with each other, 20; however, in Figure ‘7 instead of having an common means for mounting all of the down elongated anti-friction bearing for the entire wardly urged means, and detachable means for roller neck H0, I provide a separate bearing at holding the downwardly urged means in contact each end of the roller neck which is identical to? position with the anti-friction bearings on the the bearing disposed on the ends of the upper‘ ends of the top rolls, the common means for rolls 30. Each of these bearings on the roller holding the downwardly urged means in contact neck H0 comprises an inner race I20 having out-‘ with the anti-friction bearings on the ends of turned ?anges I 2II on each end thereof for the top rolls being pivotally mounted at one side loosely con?ning rollers I22, and loosely ?tting‘ 60 of the frame and the detachable means engag around rollers I22 is an outer race having in ing the other end of the pivoted member being turned end ?anges I24 for assisting the ?ange I2I in loosely con?ning the rollers I22. One _ located at the other side of the frame, so that when the free end of the said common means is detached, all of the downwardly urged means ?ange I24 has an oil hole I25 for introduction of lubricant to the space between the inner and outer races. It is thus seen that in the form of the inven- 1 tion shown in Figures 6, v7, and 8, the tremen dous downward press—ure exerted by upper bear can be swung as a unit from out of contact with the anti-friction bearings on the ends of the top rolls, the bearings on the top and bottom r'ollsv serving as spacing bosses for the top and bottom rolls. ' I ings 40 is applied to the outer race I04 on the 70 3. In a drawing frame having top and bottom end of the top rolls, which pressure is trans rolls, between which slivers are passed in a draw mitted directly to the outer race H6 in Figure , ing operation, the bottom rolls being joined to 6, and the outer races having inturned ?anges gether in end to end relation by a roller neck, I24 in Figure‘ '7, which pressure is transmitted which roller neck‘is adapted to rotate in a suit directly to the roll stand bearings II to_ I4 in 75 able bearing, the ends of the top rolls having 2,412,857 anti-friction bearings thereon, comprising inner and outer races with rotatable bearing members disposed between the inner and outer races, the roller neck having thereon an anti-friction bearing having inner and outer races, rollers loosely con?ned between the last-named inner 10 4. Ina drawing frame having top and bottom rolls, the bottom rolls being joined together by a roller neck, anti-friction bearings disposed on the roller neck and adapted to rest in a suitable bearing in a roll stand, anti-friction bearings disposed on the ends of the top rolls, and being adapted to‘ rest on the top of the anti-friction and outer races, the bearings on the roller neck bearing on the roller neck, and pressure apply and on the ends of the top rolls serving as spac ing means for applying downward pressure onto ing bosses for the top and bottom rolls, pressure applying means adapted to engage the upper 10 the anti-friction bearings disposed on the ends of the top rolls to hold the bearings on the ends portion of the outer race on the outer ends of of the top rolls in intimate contact with the the top rolls and the outer race on the roller neck bearings disposed on the roller neck, the anti being adapted to ?t into a suitable bearing in a iriction bearings on the roller neck and on the drawing frame roll stand, the outer race on the end of a top roll being adapted to ?t directly 15 ends of the top rolls serving as spacing bosses for the top and bottom rolls. onto the uppermost portion of the outer race'on the roller neck whereby downward pressure ap ’ ELV_IN B. ROBINSON. plied onto the outer races on the ends of the top rolls will be transmitted directly to the outer 20 race of the bearing disposed on the roller neck.