US2636221A - Top roll - Google Patents

Description

April 28, 1953 E. D. MEADOWS ET AL 2,636,221

' TOP ROLL Filed Aug. 6, 1947 FIG. 5.

ERNEST 0. MEADOWS RICHARD K. WHH'EHEAD ATTORN EYS.

INVENTORS.

Patented Apr. 28, 1953 UNITED STATES PATENT OFFlCE Atlanta, Ga., .assignors to 1 Meadows Manufacturing Company, Atlanta, Ga., a corporation of Georgia Application August 6, 1947, San No. 766,614

"" Claims. (01. 19- 142) 1 Our invention relates to rolls for particular application to the drafting of fibers, as in worsted spinning frames. x,

In the past, it has been the practice to apply cot material directly to drafting rolls, such as top rolls, in machines of the character indicated. When the cots have become worn and have needed replacement, the entire roll has hadto be removedv and then immersed in a caustic solution for soaking in order to loosen the cot. Not only maythis soaking process be harmful to the bearings for the roll, but the roll-servicing operation is time consuming and means that ,a relatively large stock of serviced rolls must be on hand in order to minimize down time for the machine. I V r It is, accordingly, an object of our invention to provide an improved roll wherein the above dimculties may be minimized. Y N g It is another object to providean improvedtop roll in which a cot may be removed. without disturbing the adjustment of the roll in its mounting upon a shaft. 7

It is a further object to provide an improved cot-supporting structure.

Still another object is to provide an improved means for mounting a top roll on a. shaft.

Other objects and various further features of the invention will be pointed out or will occur to those skilled in the art from a reading of the following specification in conjunction with the accompanying drawings. In said drawings:

,Fig. 1 is a partially sectionalized front view of a top roll incorporating features. of theinvention, the roll being shown mounted on a roll shaft;

.Fig. 2 is a partly broken the roll of Fig. 1;

Fig. 3 is a perspective view of a part of the assembly of Figs. 1 and 2;

Fig. 4 is a fragmentary'partly secticnalized view of a top roll illustrating a modified mounting arrangement; and

Fig. 5 is a fragmentary sectionalized view-of a further modification according to the invention.

Briefly stated, our invention contemplates an improved roll construction wherein a cot is carried by a member which may be removably secured to the body of the roll, without. disturbing the. roll in its mounted position on the roll shaft. In the specificwform to be described, the body ofthe roll is a machined casting. havinga generally cylindrical outer surface and ja central bore, to receive antifriction bearing means, The

away side view of cot is. supported on a cup which fits the generally cylindrical outer surface of the roll and which extends radially in, substantially to close off the open end of the bore. The cup, and with it of course the cot, may be readily removed by merely loosening screws between the bottom oi the cup and theroll casting.

Referring to Figs. 1 2, and 3 of the drawings, our invention is shown in applicationto a top roll it revolubly mounted on a roll shaft ilfas for use in the drafting of .fibers 'on. a worsted spinning frame. The roll it maybe supported on the shaft H by antifriction bearing means l2 and secured in position thereon as by snap rings lt-Hl seated in grooves l5-l5in theshaft H. In the form shown, the roll ili includes a body ll which is preferably a casting and which for lightness may be an aluminum alloy permanentmold casting. The body ll may be formed with a generally cylindricalouter surface it and with a central bore 19, for'bearing purposes,

Inthe form shown, the antifriction bearinglZ is a ball bearing having an outer ring 28 seated in the. bore l9 .and an inner ring 29 seated on the shaft H, against the snap. ring orshoulder l3. On one side, the bearing means 52 may include .a single sealing ring 22' carriedby the, outer bearing ring .20 and extending radially intofpreh erably close clearancerelation with the inner ring 2!. On the other side of the bearingthere may be a labyrinthian seal which may. comprise a first seal member 23 fitting the bore it and held against the outer ring 28, as by a snap ring 2 3 in the bore [9. The seal may be enhanced byjprovision, of a second seal, member 25 of L-shaped section having a cylindrical portion carried 'by..the' shaft H and. a radially outwardly extending flange extending into clearance relation with the bore l9 and with the snap ring it. The seal .member25 may be heldjin abutment with the inner ring 2!, as by ,employment of the snap ring l4. Itwill be clear thatthe ring 23 rotates with the roll. Ill and that, therefore, the ring 23 preferably clears. both the inner bearing ring'll. and the seal memberlz't.

In accordance with the invention, a. cot 26 is carried by a member 21 removably. secured to the main body H of theroll H]. The member 2? in the form shown. is a cup having a generally cylindrical wall Zia-upon whichthecot 2c is secured. The cot 26 may be of conventional rubbereand-cork or the like combination; it may besecuredby employment of a suitable adhesive tothelcylindrical.wallliii. In a preferred term,

the tightness of fit is improved by a roughening of the outer surface of the wall 28, as by the turning of a relatively shallow spiral groove 29 in the outer surface thereof.

The wall 28 preferably closely forms a sliding fit with the outer cylindrical surface I 8 on the body I1 of the roll. The bottom or radially extending part of the cup 21' is provided with a central aperture 30 to permit passage of the shaft I I therethrough, and the clearance between the opening 30 and the shaft I I is preferably close for purposes of enhancing the seal of the antifriction bearing means I2. The cup member 21, and with it the cot 26, is shown removably secured to the body I1 by means of screws 3|, which are preferably countersunk to provide a completely flush outer roll surface; the screws 3I may be driven into holes 32 tapped in enlarged portions or ears 33 formed in the body H. In the form shown, the roll I is of relatively large diameter and the casting I! is preferably, therefore, substantially hollowed out. Thus, the outer generally cylindrical surface I8 may be radially spaced from a hub portion 35 having the bore I9. In the sense of the drawings, the lefthand side of the body [0 forms a closed side of the roll to join the hub 35 with the outer cylindrical portion. so that when the cup 21 is fitted, the entire roll assembly may be smooth in external appearance.

In Fig. 4 I show an alternative means for mounting a roll, such as the roll of Figs. 1, 2, and 3, wherein it may be desired adjustably to position a fully assembled roll l along the mounting shaft II. As before, the roll I0 may be supported by antifriction bearing means [2' fitted Within a bore I9. The inner ring 21 of the bearing, however, is preferably seated on a sleeve 40 which includes an axially projecting portion 4! extending beyond the cot-supporting cup 21'. The projecting portion M of the sleeve 40 may carry suitable securing means, such as a set screw 42, for engagement as with a flat 43 formed on the end of the shaft II. The inner ring 2i may be positioned on the sleeve 40 by means of a snap ring 44 holding the ring 2| against a radial shoulder 45. In the form shown, the outer bearing ring 20' is held in the bore [9' by means of a snap ring 46 pressing a pair of labyrinthian seal members 41-48 against the outer ring 20'. Both seal members 47-48 and the cup member 21' preferably extend into clearance relation with the sleeve 40.

In Fig. 5 is shown a further modification of the invention wherein a top roll 50 includes a roll member 5| having a hub 52 supported in a implified manner by an antifriction bearing 53. The bearing means 53 may again comprise an inner ring 54 seated upon the shaft 55 and an outer ring 56 seated in a bore within the hub 52. Seal means 51-58 for both sides of the bearing means 53 may be formed with and carried by the bearing itself. The outer bearing ring 56 may be held in position within the bore in hub 52 by staking, prick-punching, swaging, or otherwise radially inwardly deforming a part 59 of the lip of hub 52, as shown. The inner bearing ring 54 may be adjustably positioned along the shaft 55 in the manner described in connection with Fig. 4, or it may be fixedly located, as by snap rings 60-6|, in grooves 62-63 in the shaft 55.

It will be appreciated that we have described a relatively simple roll construction for particular application to top rolls in which the servicing and maintenance of cots is a major problem.

In all the described forms the cot may be very easily removed without disturbing the roll or its position on a shaft, and immersing of the worn cot and its supported member in caustic solution can in no way harm the rest of the roll including the bearing. The cot-supporting structure is of such simplicity and may be made at such low cost as to make it feasible to stock up assembled cot-supporting structures for immediate replacement when necessary.

While we have described our invention in detail for the preferred forms shown, it will be understood that modifications may be made within the scope of the invention as defined in the appended claims.

We claim:

1. In a top roll for spinning frames and the like, a wheel assembly including anti-friction -friction bearing means for supporting said assembly on a shaft, said wheel assembly including a part extending radially inwardly on one side of said antifriction bearing means and to an extent for relatively close clearance relation with the shaft, and a cot assembly to be secured to said wheel assembly, said cot assembly including a cupped member having a generally cylindrical outer surface, a cot carried by said surface, and securing means between the cupped part of said member and said wheel assembly, said cupped member including a part extending radially inwardly on the other side of said antifriction bear ing means and to an extent for relatively close clearance relation with theshaft.

2. In a device of the character indicated, for spinning frames and the like, a roll including a body having a cylindrical outer surface and including a hub, said body having a closed side and an open side with the hub supported by the closed side, said hub having a bore facing said open side, antifriction bearing means in said bore for supporting said roll on a shaft, and a cup having a cylindrical cot-supporting portion to fit said cylindrical surface and a bottom extending over the open side of said bore.

3. In a top roll for spinning frames and the like, a roll body including a cylindrical outer surface and having a central bore substantially closed on one side and open on the other side,

antifriction bearing means including an outer and an inner ring, said outer ring being seated in said bore, and a cot-supporting cup including an annular portion fitting said cylindrical surface and a bottom portion extending radially inwardly substantially to the inner diameter of said inner bearingring in order substantially to close the open side of said bore.

4. In a device of the character indicated for spinning frames or the like, a roll having a bearing-receiving bore substantially closed on one side and open on the other side, said roll havinga cylindrical periphery, and a cot-supporting cup including a cylindrical bore fitting over the outer cylindrical periphery of said roll and having a radially inwardly directed disc flange to partially close the open side of said bearing-receiving bore.

5. A device according to claim 4, and including antifriction bearing means in said bearing receiving bore, a mounting sleeve for support upon a shaft, said sleeve including shoulder means for said antifriction bearing means, said sleeve including an axially projecting portion projecting axially beyond said cup, and securing means carried by said projecting portion for locking said projecting portion to a shaft. I

6. In a device of the character indicated for spinning frames and the like, a roll including a cylindrical outer surface and having a central bore, antifriction bearing means in said bore, said antiiriction bearing means including outer ring fitting said bore, said roll including a radially inwardly deformed portion extending radially inward of a part of said outer ring for retaining said ring in said bore, and a cotsupporting cup fitting over said cylindrical surface and removably secured to said roll.

7. In a roll for spinning frames and the like, a roll body member to be revolubly supported on a shaft and including a substantially fiat end ex tending radially inwardly for relatively close running clearance relation with the shaft, said body member including a cylindrical peripheral surface and having a bore open to the other end to insertably receive bearing means, a cup shaped member of sheet material including a cylindrical cot-supporting part closely fitting over the cylindrical peripheral surface of said body member, said cup-shaped member further including a substantially fiat bottom substantially closing the open end of said bore and With a central opening for relatively close running clearance relation With the shaft, and means axially securing the bottom of said cup-shaped member to said body member, whereby no matter how tight said securing means may be set there need be no stressing of the cot-supporting part of said cup-shaped member.

8. In a top roll for spinning frames and the like, a roll body including a generally radial disc end and a cylindrical rim at the periphery of said disc end and extending toward the other end of said body, a central hub for a bearing carried by said disc end, a cot-supporting member comprising a cylindrical sleeve fitting over the outer surface of said cylindrical rim and overlapping said other end of said body, said sleeve at the end opposite said disc end having a generally radial inturned disc flange extending over said other end of said body and having a central shaft passage, and means for securing said disc flange to said rim for holding said roll body and said cotsupporting member together.

9. In the combination defined in claim 8, said cot-supporting sleeve having a roughened outer surface to assist in holding a cot thereon.

10. In a device of the character indicated for spinning frames and the like, a roll having a bore for receiving an antifriction bearing including inner and outer rings with the outer ring fitting in said bore, a sleeve having a bore to receive a shaft and having an outer cylindrical surface received in the bore of the inner bearing ring of said antifriction bearing, means for securing the inner ring to said sleeve, and means carried by said sleeve and accessible externally of said roll for securing said sleeve to a shaft for locating and holding the entire device on a shaft.

ERNEST D. MEADOWS. RICHARD K. WHITEHEAD.

References Cited in the file Of this patent UNITED STATES PATENTS Number Name Date 395,938 Wright Jan. 8, 1889 981,307 Ragsdale Jan. 10, 1911 2,072,451 Hughes Mar. 2, 1937 2,267,443 Cobb Dec. 23, 1941 2,415,578 Courtney Feb. 11, 1947 2,417,239 Courtney Mar. 11, 1947 FOREIGN PATENTS Number Country Date 15,335 Great Britain of 1904 144,940 Great Britain June 24, 1920 237,482 Great Britain July 30, 1925 592,743 France Aug. 8, 1925

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