US896346A - Roll for paper-machines and other purposes. - Google Patents

Description

ENTED AUG.-18, 190a.

PAT

No. 896,346. I

W. J. ASHER; ROLL FOB. PAPER MACHINES AND OTHER PURPOSES.

APPLICATION FILED FEB.& ":07.

2 SHEETS-SHEET 1.

No. 896,346. PATENTBD AUG. 18, 1908.

W. x. ASHER; ROLL FOR "PAPER MACH 211s AND OTHER PURPOSES.

APPLIGATIOS EELED FEB. 8, 1907.

2 SHEETS-SHEET 2.

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UNITED srntrns 'rENT OFFICE.

WILLIAM J ASHER, OF VILLIMANTIC, CO NNECTICUT.

ROLL FOB PAPEB-HACHflTI-ZS AND OTHER PURPOSES.

To all when; it may conrern:

Be it known that l, WILLIAM J. Asnnn, a citizen of the United States, residing at Vi'illimantie. in the county of 'indham and State of Conneetieut, have invented certain new and useful improvements in Rolls for Paper-Machines and other Purposes, of which the following a SpGZ'ifiCfltiOD.

My invention relates to rolls adapted to he used in eoimeeiion'u'ith paper mahin machinery and other purposes, and it has. or its object to provide an improved roll having the general eharaeteristit-s and capacities hereinafter stated, and it vonsists in a roll embodyin; the various features of tonstruclion and arrangement of parts operating substantially as hereinafter set forth to accomplish the results in a manner substantially ns'desrrihed'. Referring to the accompanying drawings wherein I have illustrated preferredembodiments of my invention sullieient to dist-lose the general eharzn-terand principles thereof Figure l is a transverse section of a roll showingoue form and a rm'ering therefor; Fig.

2 is a partial side view of a. roll such as SlluWn in Fig. l, with the covering removed; Figs. 3 and 4 are respeetively transverse sections of a roll showing different arrangements of the curved springs; and Figs. 5 and 6 are respeetivelv a transverse section and a partial side view f a roll showing a different form of curved springs nnd means for at tat-h in" them.

The general object of my invention is to provide a roll'ivhieh shall have a yielding or elastic surface to a greater or less (legit-(a depending upon the particular purpose for which the roll is used. Such a, roll of this general (harm-tor, it is evident, can he used 40 for many and various purposes, and it can he variously eonstrin-ted and arranged to adapt it for the particular purpose for which it is intended. Itt-an be constructed to have varying degrees of elastieityjor to yield to a eater or less extent. under a given pressure. t can be used by itself or be covered with any desired material or in any desired way to form a surface adapted for the purpose for which the roll is intended. Itv is evident from these statements that while I have illustrated a preferred embodiment of my invention I have notlimited it to the particulgr form of construction or arran ement of parts shown, as these can he varie by those Specification of Letters Patent. Application filed February 8, 19 67. Serial No. 356,482:

Patented Aug. is, 1908.

skilled in the art without departing from the spirit of my invention.

Generally speaking, my improved roll comprises a series of curved springs, and these springs are mounted upon a suitable support in sueh away that the curved springs prnetically constitute a'cylinder ha ring more or less elasticity or flexibility and capable of yielding to a greater or less degree. The support for the curved springs may he in any suitable form adapted for the purpose, and while I shall illustrate a preferred form. it is evident that other forms which are capable of aeeonipli .iing substantially the same restill in substantially the same way may he used. So too, the curved springs may he of dit'lerent materials and of different. shapes and lengths. and may be mounted and se- (tired upon the support in ditl'erent. ways, so hm; as a roll of the general character herein deserilwd is made.

1 will now more specifically describe the. emhodiment of my invention illustrated in the drawings, wherein A is a supportshown in this instance in'the form of a metallic cylinder, supported "-t its ends in any suitable way as by a head piece A having a suit-able huh A adapted to be mounted on a. suitable shaft A, and this head may he provi-tled with suitable openings A, and the cylinder may have more or less openings 13. The number and arrangement of these openings of course will vary according to the purposes for which the roll 1s used, and if" the roll used as a couch roll there may be numerous openings A in theeylinder, and i the opt-nin or openings A in the head may he arranged to he connected with some eonduit or fuCtlOl'l means by which moisture may be drawn through the roll and discharged, or if, for instance, the roll is use-u for drying purposes in connection with heated surfaces or otherwise, the openings in the cylinder and head will permit the discharge of steam from the roller.

Suitably mounted upon the sup ort, and in the present ease upon the oylin or A, is, series of curved springs B. These springs may be of diilerentmaterial and shape, as above intimated, but as shown in Figs. 1 to 4, they consist of curved rods or wirescylindrical in cross section and secured at. their ends to the cylinder A. Many and various ways of securing them may be used, but; in

l the embodiment referred to the rods B are in holes or openings 0, a.

' the cylinder.

, openings from that to which its end first resecured so as to follow each other and constitute a cylinder made up of a practically conbent at their ends, as at b, b, and are inserted In the present instance there are rows of holes a, a in the surface of the cylinder adjacent each other, an.

there may be any desired number of such rows, I having shown in the present instance four sets of rows at ractically 90 apart. One end of each curve spring or rod is shown as bein inserted in one of the holes or openings in 'eated by the letter a, and the other end of the curved spring or red is shown as inserted in one of the holes of one of the series indicated by 0/. These curved springs ma be of any desired length, and while prefera l all the springs of a roll are of the same lengt 1, the roll may be made up of springs of varying lengths. In Fig. 1 the rod or spring indicated by letter B is made of a length about once and a quarter the circumference of Thus the end 15 of the rod B is inserted in the hole a of one series and then the spring rod encircles the cylinder and extends to the hole a of the next series, where its bent end I) is secured thereto. It will be observed that the curved spring is not in contact with the surface of the cylinder, except at its extremities, but extends outward therefrom, leaving a greater or less space between the surface of the cylinder and the circumferential plane of the curved spring. The next succeeding curved spring, in this instance indicated by C, has its and c secured to the opening a adjacent the opening a receiving, t e adjacent end ofthe spring B, and this spring C extends approximately once and a quarter around the cylinder, and its end c is secured in an opening a of the next series of fcrrcd to is secured. In this way, it will be seen that the successive curved springs are tinuous spiral, there being breaks in the continuous spiral at the points where the adjacent ends of two curved springs are secured.

In Fig. 3 I have shown another embodiment of the invention, wherein the curved springs D are longer than in the embodiment just described, and the end (I is secured at one of the openings as a of one set, and the end (1 is secured at one of the openings 0 of a set diametrically opposite the first, so that the rods or s rings make practically one and one-half circ cs around the surface of the cylinder. r

In Fig. 4 I have indicated a construction wherein the springs E are shorter, and the end a is secured to an opening a. of one set, and the end 6 is secured practically 135 from the first set, and thus the rods or springs make less than a complete circle around the surface of the cylinder. These illustrations are sufiicient to indicate that the length of the curved springs may vary, and they may be variously arranged with relation to each other. In this Fig. 4 I have shown another way of securing the springs in which, specifically s eaking, the spring may be of any desired cngth, and may make any desired number of turns around the cylinder, but may be secured thereto at intermediate points, so as to ractically constitute a series of spiral sprm s. In this form I have shown what. may. e termed a headless screw S having a groove .9 into which the rod or s ring is inserted, and secured in any suitab e way as by heading over the adjacent parts of the screw. It will be seen that this accomplishes ractically the same result in making an e astic cylindrical surface, and securing it to the cylinder, although the spring may be contmuous to a greater or less extent.

In Figs. 5 and 6 I have shown the spring sections F as having a flat outer surface, and as preferably made of llat spring metal, and of a width so that when they are mounted spirally as indicated the sides of two adjacent portions of the spring or springs abut against each other throughout the greater portion of their length. So too, 1 have for purposes of illustration of the scope of my invent-ion indicated another means of securing the curved springs to" the cylinder, and in this case there are rows of single holes (L2, a, andlhe bent endsfandf of the spring F are inserted in the holes cf, 0, and these holes also receive the ends of the next precedin and succeeding spring, as e of the spring 4 and g of the spring G, and these ends m'ay be secured in the holes in any suitable way, as by a wedge IV which can be readily driven in between the ends of two adjacent springs and secure them in position in their respective holes.

The roll thus far described may be used for any purpose for which it is adapted, or for,

other )u rposes it may be provided with any suitable cover adapted for the purpose for which it is intcnded,'and as illustrative of this feature of the invention, in Fig. 1 I have shown a cover H made up of a series of layers of textile fabric, the inner one h being for instance of cotton, the next one h being of wool, and the outer one it bcing of canvas. This cover can be attached and secured in a manner well understood in the art, and may be of any desired thickness. When the roll is used as a suction roll it may be suitably covered to adapt it for that purpose, as, for instance, the covering may consist of a foraminous sheet of wire mesh or other well known material.

From the above disclosure of my invention the distinguishing characteristics thereof will a pear with sullicient clcarness to enable tiiose skilled in the art to make and use my invention, and to vary the details of construction and arrangement to adapt it for the purposes intended.

i? 5. if y i g .i' g I \t ithout limiting mvself to the particular l construction described. and using the terms in the claims generically to include what is i springs, each extending a grcater'or less disshown and the equivalents tin-roof, what I l tance around the support and mounted sideclaiinis:

l. A roll of the character described, cornprisin" a support and a series of springs arrange side-by-side and supported therefrom at both ends.

2. A roll of the character descriheiL'cornprising a support and a series of curved springs having their ends connected to the support.

i. A roll of the character described, comprising a support, and a series of curved s rings mounted on the support side-li \'-side c ose together and in series relation to form a cylinder.

4. A roll of the character described, comprising a support, and a series of curved springs mounted side-hy-sidc and in spiral series relation close together to form a cylindcr, each spring being supported at each of its ends.

A roll of the character des ribed, comprising a cylinder, and a series of curved springs having their ends secured to the cylinder and arranged to form a yielding cylindrical surface.

5;. A roll of the-character described. comprising a cylinder, and a series of. curved springs having their ends secured to the cylinder, the u'ljw'cnt ends of two springs being secured together and to} he cylinder.

by-side in a spiral serres to form a cylindrical surface adapted to yield inwardly.

8. A roll of the character described, comprising a series of springs mounted to form a yielding cylinder, and a covering therefor.

9. A roll of the character described, comprising a series of springs mounted to form a yielding cylinder, and a covering of textile fabric.

In. A roll of the character described comprising a support and a series of similarl curved elastic rods secured thereto at their ends and arranged s irally and close together on the support so t at said rods form a sub- ;tantially continuous cylindrical spring surare.

1!. A cylindrical roll the surface of which is com osed of elastic rods extending around l the'cy inder and so ported at intervals. i 12. A cylindrica roll having a central support and a spring surface composed of 5 )ring 5 rods wound spirally around said centra. support in close contact and supported the? g from at intervals.

In testimony whereof I aflix my signature I in presence of two witnesses. WILLIAM J. ASHER. 'itnesse 1 Fuaxx L. FREEMAN,

- An'rnt'n L. Burner 7. A roll of the character descrihed cohn 1 prising a support, and a serie i 'sol', curve.

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