US1540588A - Sectional roll - Google Patents

Description

wrrNEssEs A ATTORNEY June z, 1925. y 4 1,540,588 H. G. ALEXANDER'- l 'sEcTIoNAL ROLL Filed Dec.A 15. 1923 Patented tlune 2, 1925.

nonnen ALEXANDER, or sourir ynounoamarrar, VERMONT.

siicrroivat ROLL.

npplcedtoul tiled. December 15, 1923. Serial No. 680,871.

To all 'whom t may concern: d

Be it known that Lilonimn G. ALEX- ANDER, a citizen of the United States, residing at South Londonderry, in the county ot lVindhani and State of Vermont, have iiivented a new and use'tul vImproveinfent in Sectional Rolls, of which the following is a specification. v

This invention relates `to sectional rolls for use in textile` and paper mills.

The Object isto provide a built-up Vor laminated roll which lmay he constructed -oil pieces of wood of different sizes so utilized and placed, thatthe grain et the wood is arranged radially to the roll, thus producing a roll wherein the wear ot the passing fabric, threads or belt is` reduced to a minimum, and a great saving in cost is effected in the Vmanufacture.l A y u Another object is to provide a roll which, `when immerse-din water ornother liquid, as isoften necessary in theartsstated, will not swell, warpor become otherwise vdistorted` during its operation. y d

A. further object is to provide a roll which maybe built of any diameter `and length desired, as the latter may loe increased or decreased the addition or omission of more layers, or sections or wooden segments; and to provide means :lor clamping` the several layers of segments together, Ato hold the roll from'longitudinal movement upon the shaft, and to prevent any of the segments from inoveinen outwardly or radially to said shaft.

A Yfull and complete understanding oli the invention may be obtainedfrom a consideration of the following detailed description, takenl in connection with the Vaccompanying 'drawing 'forming a part et this speciicatiomit being understood that while the drawing shows a practical torni ofthe invention, the latter is not to be confined to strict conformity with the showing thereof, but may be changed or modified, so long as such changes or modifications mark nomaterial departure freni the salient features of the invention, as specifically pointed out in' the appended claims. p

In the drawing, in which sirnilar` rel"- erenc-e, characters designate corresponding parts throughout the several i'igiirese VvFigureulis a combined side elevation and longitudinal sectionk of a'xroll constructed in accordance with the invention.

`Figliire2 sanend view of the saine;

' roll.

Figure 5 is a detail perspective view ot v'one of the segment-retaining discs.

Figure 6 is a transverse sectional view through a slightlyl modilied torinoit roll.

The ordinary inethod employed in the manufacture of rolls for use in teiitile mills or paper mills, ris toplace a solid mapleldg in a lathe and turn the same to the desired diameter, cutting od? the saine to the desired length, and, by the use of metallic end heads. secure the same to the shaft in proper position. Such solid roll soon shows signs of wear by the passing `fabric, threads, conveyor or drive helt,some ot the longitudinal grain ofthe wood being soft-erithan oth-ers, and the said roll must'then be disniounted and turned again to preserve its shape. Logs of large-enough diameter are hard to find and, as a result, are expensive, and their upkeep in proper form, is also expensive, and inaddition to this, the solid form' of roll is quickly distorted or warped` when partially or wholly immersed in liquids so that they soon become useless.

The present invention is designed to overcome these defects ,by-providing i-oll that will not swell or warp, that will show little o r no signs ofwea-r after long continued operation, andwhich enables the manufacturer to utilize small pieces ot' `the proper wood in constructing the sain-e, which would otherwise be wasted.

Referring to the drawing, there is shown a shaft l. which is adapted to be mounted for rotation in any form ot machine wherein wooden' rolls are used. Mounted on the shaft is a tubular sleeve 2 which is of a length somewhat greater than the length of the roll, and has 'each end exteriorly threaded, as at 3, and provided in its ends with slots 4, for the reception of keys orl splines 5, having their inner portions seated in longitudinal slots 6 formed in' the shaft. Tlach end of the sleeve is thus secured to the shaft and is prevented from longitudinal movement thereon. j

Pieces of wood, preferably maple and of uniform thickness are then formed into segments 7, as shown in detail vin Figure 4C of the drawing, each of said segments comprisin'g an outer arcuate Surfae 8 struck on 8] radius substantially equal to the desired diameter of the roll, and having i1icli i ieplr or tapering sides 9 which extend along lines exactly radial to the center from which said arc was struck. The inner or narrow end of each segment is provided with a suitable seat 10, curved to fit the aforesaid tubular sleeve 2, and the said segment is cut from the Wood in a manner to have the grain thereof run as near as possible from the. center of the small seat 10 to the center of the outer arcuate face 8 as indicated in VFigure 1. This brings the ends of the grain`on the outer act-ive surface of the roll, and since Wood does'not expand longitudinally of the grain when subjected to moisturey nor contract when dried, to any appreciable extent, it Will be seen that the finished roll may be used either in or out of Water or other liquids Without bad eEects. i Y n rIhe Widths of the several segments, forming` one com-plete ring or layer 11 of the roll, may vary, depending on the stoel; of pieces of timber on hand, as clearly shown in Figure 3, but of course their lengths must be uniform or nearly so. Each segment is provided on one face with a countersunk portion or seat 12 extending substanti-ally to half its length and from side to side thereof, the outer end of said seat terminatingl in an arcuate groove 13formedin the Wood and struck from the same center as the outer active face of the roll. Then sufcient segments of different or uniform Widths are placed together to form a complete ring or layer 11, the same is placed upon the tubular sleeve 2, after first placing in position thereon a retaining plate or disc' 14 shown in detail in Figure 5. rlhis disc is of relatively thin pressed steel having a central aperture 15-of a diameter to slide onto the tube 2, and is provided with a marginal outstanding` flange 16 extending i entirely around the same. W hen the disc `is seated in the countersunk portion 12, with the said flange seated in the groove 13, the outer face of the disc and the several segments areY flush, and it will be seen that the said segments are prevented Yfrom-radial displacement.

Then the desired number of layers or rings are thus assembled and placed upon the tubular sleeve, each With a retaining disc therein,'a complete, solid, cylindrical roll is provided, the number of rings depending upon the length of the roll desired. i

At, or nearthe ends of the roll, one or more of the retaining discs 14, may be keyed or splined to the sleeve-Q, as indicated at 17, in which case the segments are slightly shorter at their inner ends' to provide ,Ka space 18 for applying said spline, which cause the entire series of rings comprising the roll Vto rotate uniformly with the shaft through the medium of longitudinallvl disposed tie-bolts '19, traversing suitable alined apertures formed through the entire series of rings outside of the flange of the retaining disc. v

Circular discs or clamp plates 2O of smaller diameter than the rings are mounted on the ends of the sleeve 2 and bear against the outer faces of the outermost rings or layers 11, and said plates are like- Wise bored for the reception of the ends of the tie bolts, which have suitable nuts 21 applied thereto to bear against said plates and to bind allthe rings tightly together, and holding the retaining discs in place to prevent the several segments from moving outwardlyy or in any other direction.

The ends of the sleeve 2 are equipped With suitable nuts 9,2 Which further serve to bind the lparts together, and` when tightened up are adapted to overlie the aforesaid keys or splines 5 and prevent the same from dislodgment from their seats in the slots in the shaft. If desired, the use of the sleeve 2 may be dispensed with and the'discs 14, the segments 7, vand the clamping plates' 20 may be mounted directly on the shaft 1, in which case the latter Will be threaded for the reception of the nuts 22, as Will be understood.

After a roll of the desired diameter and length has thus been assembled, the same may be placed in a lathe and turned to a smooth and perfect circumference and, by reason of theend grain of the Wood comprising the segments being uniformly eX- posed to the surface, the roll Will not be materially aected by continued use, and the effects of moisture or heat will not be noticed on the surface of the roll.

In Figure 6, there is shown a slightly modified form of the invention, in which all of the segments 7 are of uniform length, Width and shape, there being eightof such segments shown to complete one ring or layer, mounted on the sleeve 2a inthe same manner and held by similar tie-bolts 19a. In this form, the retaining plate or disc 14;a is octagonal in form and Yis provided with a marginal flange 16n seated in a corresponding groove and for the same purpose. Any other number of segments of uniform size and shape may be employed, together with a corresponding shaped retaining disc, but the first described form, wherein irregular Y sizes are employed with the circular retaining disc, is preferred.

yFrom the foregoingl it will be seen that a simple, easily assembled, and durable Wooden roll has'been provided, which may be used to advantage in textile machines, or in paper mills, or as pulleys for belts or conveyors in other, machines, and that a great saving in the cost is eected by the utilization of small vpieces of material,thus avoiding the necessity for the employment of a solid log of wood, and that a practically indestructible, non-warping, non-expanding or eontraoting` roll is provided. .Y

l. A sectional roll comprising a series ot Circular layers of wood having rounded outer surfaces conforming to the roll and formed of segments having abutting radial side edges, each layer of segments having` on one taee only a. Central depressed seat, said seat terminating in an outer, marginal groove extending part vway through the segments, a plate mounted between each ot the rlayers and seated in each of said seats, said plates each having a marginal iange extending into its Corresponding groove to allow the layers to abut and to prevent outwa "d movement of the segments, clamping plates bearing against the ends of the roll, tie rods traversing the layers outside of the interposed plates and also traversing the clamping plates, and nuts mount-ed on said rods to hold the layers together.

2. A sectional roll comprising a continuous axial bearing` tube having threaded ends extending beyond the ends of the roll and having means for splining the same to a shaft, a series of circular laye-rsA of wood having rounded outer surfaces conforming to the roll and formed of segments, each having the grain of the wood running radially ol the roll and having abutting radial sidel edges, each layer of segments having on one Jface a central depressed seat, said seat terminating in an outer, marginal groove extending part way through the segments, ay plate mounted between each ot the layers and seated in each of said seats, said plates each having a marginal flange extending into its Corresponding groove to allow the layers to abut and to prevent outward movement o'l' the segments, means for splining certain of the dises to the tube, clamping plates arrcnged on the tube and bea-ring against the ends of the roll, tie rods traversing the layers outside ot the interposed plates and also traversing the clamping plates, nuts mounted on said rods to. hold the layers together, and nuts mounted on the ends ot the tube and bearr nature.

HORACE Gr. ALEXANDER.

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