US2678474A - Top roll for textile drawing mechanisms - Google Patents

Description

May 18, 1954 R. K. BUTLER TOP ROLL FOR TEXTILE DRAWING MECHANISMS Filed March 23, 1949 pI/ll/l/ld v INVEN TOR. RICHARD K. BUTLER BY Patented May 18, 1954 *NrrEo or FlGrE TOPROLIY FUR TEXTIL'ZE DRAWING MECHANISMS ;Richard K; Butler, Whitman, Mass., 'assignqn by :mesne assignments, to TextileEngineering Cornotation, whitman -Mass a corporation bf ramification March 23, 1949, Serial No. 82,974

. 'ldfTClaims. ,1

, aThismalaplication is a continuationuin part of "myxpendingapplication Serial No. 45,045,.filed ;.-1August 19,1948.

The present ,invention. is. an improvement in sdrawingzrolls .used: for the drafting of textile -i ?.fibel'S r in l the; production of. sliver; roving, and :yyarn and relates, particularly to: top .rolls of the- -:.so.-;called.so1id type in whichthe-enti-re-roll ro- .-..tates,asa. unit; and which conventionally comva priseatcast iron orwsteel body-having two-.:inte-:

gral enlar ements onbosses connected bya readueedaori-neck portion-and alsohavin an integralvreducedrportiorr projecting. from'the outer mendwo'fteach boss forming a gudgeonor journal, ultheabosses being-covered with cots ofv leather or psyntheticpr. :othen-non-metallic cushioning marteria-l having a", ,moderatewamount of resilience, wwhiclr cots ride on thefluted lower rolls which are: driven andaimpartrrotation tor the top rolls.

To grip and thus draw the strandstof silver or and the. coengaging :stationary surface-of the V saddle which bears down. on" the. neck' .to weight ..-the roll,ras well asfthat arising between. the bearing surfaces of 'the gudgeonsand'fthe slots inithe .lcap -bars which serve as'l bearings therefor.

.These bearing. surfaces on the custo-maryroll,

beingfof castiiron. or.ste"e1,.have a relatively rapid ,ratesof wearand -becomeworri tosuch' a degree ...to impair l'their usefulness, with i'the result that the entire roll" must "be' discarded because accepted as a" necessary incident of established "manufacturing procedure, this replacement is still a substantial and continuallwrecurring"elem'ent of expense irflthe' industry.

Toprevent intolerably rapid wear crane-necks and *gudgeons =of the rolls, lubricationirmust 'i be uppliedf but the lubricant useda' must betu'apthe?utmosti restraintaandzaccuracy ito the. brearing surfaeesialone,1-:botlrabecauserthe v oil (URN-142) onthe necks v and gudgeons, under :thesaddle, ,andin the cap bar slots; and also because: any spot or film of oil .on the cots oron the fibrous material being drafted interferes with thedrawingand damages the material. Thus, frequent wcleaning of the rolls and saddles, and-cleaning of the cap bars,=is compelled by the accumulation of lint and fly when oil is used.

. It is-the object of the. present invention wto provide a top. roll construction-in which these objectionable features of operation will be t obviated.

To this end, the invention comprises a top roll tprovided with removablerand replaceable elements forming. the bearingxsurfaces, preferably both on the neck: and on the gudgeons or jour- .nals, and in its preferred embodiment these replaceable elements, or at least their bearing surcfaces are formed of synthetic material characterized by superior frictional characteristics resducinglorobviating the necessity for the use of alubricanttherefor. Hence the expenditure of time, effort, and care heretofore. required for lubricating the rolls and in cleaning them. and

their saddles and cap bars from collected fly and lint caught by the lubricant, are avioidedaor greatly reduced. Further when damage or wear occurs to impair the bearing surfaces of the rolls,

. the rollsdo nothave to be discarded, but are simply supplied with new elements providing .the bearing surfaces-and thus are restored. .to full utility. in. these respects.

An illustrative embodiment of the invention .=-is showninthe accompanyinginvention in which T inafter.

fiend Fig. 4 a: section on line 4 4.01? Fig. 2.

Other objects of the invention, and themanwner-of their attainment, are as made plainvhere- :In the; preferred. embodiment illustrated, .fthe

improved roll comprisesa-shaft i havinglsleeves 3 oftmetal or other suitable material. fittediicloseincapable of being effectively? repaired. wl'iileii-zid =ly' but slidably thereon to: form.- thel bosses. on which tubularcots' 5 of rubber, leatheigor other suitable v composition are adhesively mounted. .--As customary, a portion i of the exterior of each boss 3 is knurled to provide a better. grip Lfor the adhesive employed to cement thecot thereto.

iTomaintainthe-bosses 3 in proper spaced relation to suit the gage of,the-particular-drawing a-or roving frame in -whichothese rolls aretiused,

aone-ormore sleeves 9, .l I., ifitting closelyb'utslid- 3 to maintain the latter in properly spaced relation.

Sleeve 9 located at midlength of the roll is in accordance with the preferred form of the in vention formed of material having a co-efiicient of friction so low that the application of a lubricant thereto is unnecessary or seldom needed. Examples of materials of this class are the high molecular weight synthetic plastic compounds such as the poly-amide polymers described in Carrothers Patent No. 2,130,948, of which the material supplied under the name of nylon by E. I. Du Pont de Nemours Co., Wilmington, Delaware, are a related synthetic plastic material supplied by them under the trade name of Teflon, are especially suitable; also the polyvinyl series of resins, ethyl cellulose, cellulose acetate, and others. The sleeve 9 is made of sufficient length to exceed the width of the saddle (not shown) of the weighting mechanism used to weight the top roll, and in the case of narrow gage frames comprises the sole spacing element interposed between and engaged by the two bosses 3. When frames of wider gage are to be equipped with the improved rolls, the sleeves I! made of metal or other preferred material are employed, of equal length and disposed symmetrically at each side of the synthetic sleeve 9, to hold the bosses 3 further apart, a shaft I of appropriate length for the gage of the frame being used in each instance.

To hold the described parts of the roll in place, each extremity of shaft i is bored axially and threaded as indicated at E3, and a member i preferably of the same or similar synthetic plastic material as the sleeve 9 engaged by the saddle, or of any of the aforenamed plastic materials, is affixed to each end of shaft l, in axial alignment therewith by means of a screw ll threaded into the bore I3. This member i5 has a cylindrical portion 59 fitting closely within the bore of the outer end of the proximate boss 3, and a shoulder at the junction of reduced portion it with its portion 2| of greater diameter which bears against the end of boss 3 to force the latter inward along shaft 1 when screw I"? is tightened.

As is obvious, the members l5 constitute the gudgeons or journals of the roll, and the cylindrical surfaces 21 form the bearing surfaces engaging the slots of the cap bars (not shown).

To hold the bosses 3 and the bearing sleeve 9 against relative rotation with respect to the shaft I, the latter is preferably keyed to the interior of each of these elements, herein by making shaft l hexagonal, and shaping the interior passage through sleeve 9 and the inward half or two-thirds of the length of the passage through each boss 3 of matching hexagonal shape, such that these parts can slide easily along. shaft I, but cannot rotate thereon, as shown in Fig. 3. The outer one-third or half of the length of the passage in each boss 3 is of circular section, as shown in Fig. 4, thus permitting the journal-forming member l5 and its retaining screw ii to be rotated as a unit in installing member I5 in the end of the roll; it

is preferred to seat the screws H in the axial bore and counterbore formed for its reception in member It with a press fit, so that these two parts may be handled as a unit in inserting, re- .moving, and replacing.

From the foregoing it will be seen that rolls of various lengths to suit various gages of frames are made up of the same bosses 3, center bearing sleeves 9, and journal members I 5, by merely employing different lengths of shafts l, and using or omitting the spacer sleeves II. It will likewise be evident that in the event of injury or wear requiring replacement of any or all of the bearing surfaces on sleeves 9 or journal members l5, these members can be quickly and easily removed by unscrewing one or both of the journal members i5 to release all the parts, followed by replacement of those which need renewal with new members.

The construction prevents all tendency of unscrewing of the journal members l5, which hold the roll assembled in rigid unitary relation, by any fortuitous twisting force tending to revolve one boss with respect to the other or to the shaft I; but a turn or two of the screws H by means of a wrench applied to the sockets in their heads releases all the parts for dis-assembling by the fingers alone.

The countersinking of the heads of screws l'l fiush with the extremities of journal members I5 avoids the creation of projections or angles for the lodgement of lint and fly.

The nature of the preferred materials used to provide the bearing surfaces on the journals and center or saddle bearing makes them capable of running without undue wear in the total absence of applied lubricant, or with unprecedentedly small amounts in cases where abnormal weighting makes lubrication necessary.

While I have illustrated and described a certain form in which the invention may be embodied, I am aware that many modifications may be made therein by any person skilled in the art, without departing from the scope of theinvention as expressed in the claims. Therefore, I do not wish to be limited to the particular form shown, or to the details of construction thereof, but

What I do claim is:

l. A top roll for the drawing mechanisms of spinning and roving frames, comprising in combination a roll body including two bosses nonrotatable relative to each other for supporting the customary cots, roll supporting members, and screw means aflixing such members nonrotatably to the ends of the roll body.

2. A top roll for the drawing mechanisms of spinning and roving frames, comprising in combination a roll body including two bosses nonrotatable with respect to each other and to the roll body for supporting the customary cots, journal members, and screw means afiixing such members to the end portions of such roll body in cperatively fixed relation for rotation therewith, and with capacity for removal and replacement When worn. v

3. A top roll for the drawing mechanisms of spinning and roving frames, comprising in combination two bosses for supporting the customary cots, a member holding the bossesagainst relative rotation and in coaxial relation, and means fixed to each end of such member preventing escape of the bosses therefrom and extending beyond the bosses to form pintles supporting the roll in its bearings.

4. A top roll for the drawing mechanisms of spinning and roving frames, comprising in combination two bosses for supporting the customary cots, a member holding the bosses against relative rotation and in coaxial relation, spacing means on such member between the bosses, and gudgeons non-rotatably and releasably; secured to such member holding the bosses against the spacing means.

A top roll for the drawing mechanisms of spinning and roving frames, comprising in combination a shaft and bosses thereon, cots on the bosses, spacing means on the shaft holding the bosses apart, and gudgeons non-rotatably fixed on the ends of such shaft and holding the bosses against escape from the shaft.

6. A top roll for the drawing mechanisms of spinning and roving frames, comprising in combination a shaft and bosses thereon, cots on the bosses, spacing means on the shaft holding the bosses apart, and gudgeons non-rotatably fixed on the ends of such shaft holding the parts of the roll in assembled relation.

7. A top roll for the drawing mechanisms of spinning and roving frames, comprising in combination a shaft and bosses thereon, cots on the bosses, spacing means on the shaft holding the bosses apart and having a portion forming a saddle-supporting surface, and gudgeons nonrotatably and releasably secured to the ends of such shaft positioning the bosses and spacing means lengthwise of such shaft.

8. A top roll for the drawing mechanisms of spinning and roving frames, comprising in com bination a shaft, two bosses slidably supported on such shaft, cots on the bosses, spacing means slidable on the shaft between the bosses, and gudgeons non-rotatably amxed to the ends of the shaft and cooperating with the spacing means to hold the bosses in operatively fixed positions in the length of the shaft.

9. A top roll for the drawing mechanisms of spinning and roving frames, comprising in combination a shaft, two bosses slidably but nonrotatably supported on such shaft, spacing means on the shaft between the bosses, and means on the ends of the shaft forcing the bosses against the spacing means and extending outwardly beyond the shaft and bosses to form journals for the roll.

10. A top roll for the drawing mechanisms of spinning and roving frames, comprising in combination a shaft, two bosses slidably but nonrotatably supported on such shaft, spacing means on the shaft between the bosses, and gudgeons affixed to the shaft preventing axial movement of the bosses along the shaft.

11. A top roll for the drawing mechanisms of spinning and roving frames, comprising in combination a shaft and a plurality of bosses thereon in mutual splined engagement preventing relative rotation, spacing means mounted on the shaft between bosses in slidable but non-rotatable relation to the shaft, and means in screw engagement with the extremities of the shaft projecting beyond the outer ends of the bosses to form journals for the roll.

12. A top roll for the drawing mechanisms of spinning and roving frames, comprising in combination a shaft polygonal in section throughout at least a portion of its length, a plurality of bosses each having an axial passage shaped to match the polygonal cross section of the shaft throughout a portion of the length of such passage and a cylindrical shape for another portion of the length of such passage, spacing means on the shaft between the bosses, and gudgeons screwed to the ends of such shaft each having a portion fitting within the cylindrical portion of the passage through a boss.

13. A top roll for the drawing mechanisms of spinning and roving frames, comprising in combination, a shaft of polygonal cross-section, bosses having axial passages conforming throughout a part only of their length to the shape of the shaft slid-ably but non-rotatably mounted on the shaft, spacing means between the bosses having a saddle-supporting surface of synthetic material, gudgeons extending within non-polygonal portions of the passages through the bosses and projecting beyond the outer ends of the latter and also having bearing surfaces of synthetic material, and screw means affixing the gudgeons to the ends of the shaft.

14. A top roll for the drawing mechanisms of spinning and roving frames, comprising in combination a shaft, a sleeve thereon of synthetic material forming a saddle-supporting surface, spacing elements slidable on such shaft and located at each side of the said sleeve, bosses slidable on the shaft engaging the spacing elements, gudgeons of synthetic material projecting axially from within the bosses, and screw means on the shaft forcing the gudgeons axially against the bosses to urge the latter inwardly against the spacing elements and the spacing elements in turn against the sleeve.

References Gited in the file of this patent UNITED STATES PATENTS Numb-er Name Date 949,504 Sexton Feb. 5, 1910 981,307 Ragsdale Jan. 10, 1911 1,897,137 Meynell Feb. 14, 1933 2,072,642 Martin Mar. 2, 1937 2,246,086 Austin June 17, 1941 2,256,193 Cobb Sept. 16, 1941 2,355,510 Cobb Aug. 8, 1944 FOREIGN PATENTS Number Country Date 311,211 Germany Feb. 28, 1919 364,444 Italy July 27, 1938 677,776 France Mar. 14, 1930

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