US882351A - Roller for paper-making machines and process of manufacturing said rollers. - Google Patents

Description

No. 882,351 PATENTED MAR. 17 1908.

w. E. SHBBHAN. ROLLER FOR PAPER MAKING MACHINES AND PROCESS OF MANUFACTURING SAID ROLLERS.

APPLICATION FILED JAN. 16, 1906.

2 SHEBTSSHEET 1.

PATEN'TED MAR. 17, 1908.

W. E. SHBEHAN ROLLER FOR PAPER MAKING MACHINES AND PROCESS OF MANUFACTURING SALD ROLLERS.

urmoumn IILED JAN. 15, 1906.

2 BHBBTS-SKBET 2.

Witnesses UNITED, STATES -i ENT. OFFICE.-

WILLIAM E. S HEEHAN, OF ALBANY, NEW YORK.

ROLLER FOR PAPER-MAKING MACHINES AND PROCESS.OF MANUFACTURING SAID ROLLERS.

Specification of Letters Patent.

Patented March 17, 1908.

Application filed January 15, 1906. Serial No. 296,174.

3 New York, have invented certain new and useful Im rovements in Rollers for Paper- Making l\' achines and Processes of Manufacturing said Rollers; and I do hereby declare the following to be a full, clear, and exact descri tion of the invention, such as will enable ot ers skilled in the art to which it app ertains to make and use the same.

his invention relates to the structure and manufacture ofrollers used in paper making machines and particularly to couch-rolls of the sort used on aFourdrinier aper making machine and to ress-rolls use in other paper making mac es.

The objects of the invention are: (1) to so construct these rollers that they shall be homogeneous and therefore capableof holding their proper cylindrical form and surface and, if damaged, be capable of presenting a new and perfect surface when turned down in alathe: (2) to so construct these rollers that they may be renewed or re laced at the mill, where in use, instead of aving to be sent to the manufacturer: (3) to provide rollers which shall have the requisite elasticit and still be capable of retaining the desire true and even surface: and (4) to provide rollers which, in the expense of manufacture, economy in use and perfection in operation, shall excel those now generally known.

With the attainment of these obects in view, the invention consists in the r0 or constructed and in the mode of construction practically as herein described and claimed.

To assist in thedisclosure of this invention, reference is made to the accompanying drawings wherein:

Figures l and 3 represent, in side elevation, rollers involving my invention, but vathe arrangement of material from whic they are made: Figs. 2 and 4 are res ectively transverse sections of said rollers:

igs. 5 and 6 show in pers ective two stages in the formation of them er seen in Fig. 3: Figs. 7, 8, '9, 10,-and 11 represent different ste s in one mode of formation by which the re er in Fig. 1 maybe produced.

It is well known that, of all natural fibers, none possess lasting resilience in a greater degree than'does wool and this resilience is still manifest when this fiber is compacted in a mass under great pressure. Other fibers soon mat under heavy and continual pressure whereas wool does not. fore made from cotton and from felt are wanting in resilience at the outset and soon lose what little they had.

'"By'making rollers, for the pur ose specifled, from carded wool and in t e manner herein set forth a more erfect and enduring result is obtained than eretofore known.

The fibers of wool are always kinky and Rollers hereto-- interlace more or less no matter. in what manner the wool may be carded. This interlacing is more pronounced when the wool is taken from the card in sheets than when it issues from the carding machine in ribbons or rolls, but it may be used in either form in carrying out this invention.

In forming the roller seen in Fig. 1, the

wool is taken from the card in sheets and cut 7 into rings or washers and threaded upon the shaft. They are then subjected to hydraulic pressure axially applied until compacted to the desired degree. In building up the roll on its own shaft, these washers are threaded on in batches and pressed down successively until the roller is completed. By applying steam heat during the operation the wool, because of its crawling nature when subjected to heat, comes together in a mass and adheres to the shaft.

The wool may be applied to the shaft in ribbons, as suggested in Fig. 5, by wrapping it in successive turns about the shaft. The portion thus applied to the shaft may then be subjected to hydraulic pressure andproduce a washer or section such as seen in Fig. 6. In a roller thus constructed the general direction, or lay, of the fibers is concentric about the roller substantially as shown in Figs. 3-6; while in a roller constructed from rings or washers cut out of a sheet of carded Wool (Figs. 1 and 2) the fibers lie in all directions intermixed and interlaced.

As above described, the rollers may be i It is, however, M

Sections constructed as in Figs. 5 and 6 may be so used. It is preferable, however, to construct the sections substantially as illustrated in Figs. 7-10. For this purpose, rings or washers cut from sheets of carded wool are preferably used. These are slipped onto a core 12 in sufficient number to produce, when pressed down to the desired density, a section of about one inch in thickness. Sections thus produced will hold their forms fairly well, but it is preferable to fortify them against change in form by cementing together the fibers of the inner portions of the sections. This may be done by injecting, into this portion of the hollow cylinder of fibers, some suitable agglutinating substance or cement either before-pressure is applied or when the mass has been partially compressed. This may be done in various ways. One practical way is by making the core 12 hollow and perforating it and injecting the cement through the perforations into the wool to the desired extent. It is preferable to compress the wool partially before injecting the cement and to apply this preliminary pressure axially to the outer peripheral .portion' of the cylindrical mass of wool, then to inject the cement to about one third the radial thickness of the mass, (substantially as indicated by the darker portion 13), then after the cement has become nearly hard to ap ly the pressure to the inner portion as well and reduce the whole to the desired size and condition substantially as indicated in Figs. 9 and 10. These sections may then be threaded u on a roller shaft, as 14, and clamped snugl y together by the usual washers and nuts 15 and 16. The interior diameter of the sections is made slightly smaller than the shaft so that the sections when forced onto the shaft will clin thereto. The slight bulging of the wool at the outer or uncemented portion 17, of the sections (exaggerated in the drawings) provides for said sections fitting so snugly together upon the shaft that no meeting line between them is discernible. This fitting together of the sections is also so perfect as to make the entire fibrous portion of the roller as solid as though it were one continuous section.

In the formation of sections for composite rollers just described other fibrous material thanwool may be used, provided it be such as can be readily cemented together substantially as specified.

The sections made in any of the above ways may be put into a lathe and turned down to the desired diameter, or the roller when built up of them or built up as first described, may beturned down to the desired extent and, should the surface of a roller become filled up and hard or be damaged in any way so as tomark the paper, it may be resurfaced by turning it down. In a roller built up of sections, should a section be seriously damaged or prove defective it may Pounded felt, which has heretofore been used for the construction of couch rolls, is made of fiber taken from goods submitted to treatment and rendered comparatively inelastic, and inclined to assume and maintain a form or position without responding to any particular .spring or elasticity tending to restore its particles after pressure hasbeen applied to it. In other words, the fiber of the material of which the pounded felt is composed becomes set after being operated upon. This is because of the treatment to which the material is subjected, in order to make it pounded felt the wool is sub mitted to pounding in a tub containing steam, soap and hot water, and while in this tub heavy wooden blocks hung u on a "crank or a knob fall upon this mass of Wool, fiber until it becomes, by the soapiandfwater and the friction generated by the pressure from theseblocks falling upon it, a mass :in which the character ofthe fiber is changed and it is set in a rigid condition.

Thematerial of which carded wool rollers are constructed difiers from the materialwhen it is operated upon immediately after its removal from a sheep is elastic, full of vitality and thoroughly qualified for use, and after it is carded it is rather improved, and the particles are kinky, resisting any tendency to fold them and tending to reassume the former position.

The invention claimed is 1. A couch roller for paper making m chines, consisting of a shaft surrounded by carded wool compressed into a denseelastic, homogeneous mass and turned down into cylindrical form.

2. A couch roller for paper making machines, consisting of a shaft surrounded by layers of carded wool wrapped in successive turns about the shaft and compressed and turned down into a dense, elastic, cylindrical mass.

3. A couch roller for paper making machines, consisting of a'shaft surrounded by fibrous material treated at its inner portion about the shaft, with an agglutinating substance, whereby said portion is made a rigid mass and thereby retains the fibrous material in proper form. I

the life, spring and elasticity. .The wool,

4. A couch roller for paper making machines, consisting of a shaft having clamped thereon several disks of compressed fibrous material each treated, at its inner portion about the shaft, with an agglutinating substance whereby said portion is made a rigid mass and retains the disk in proper form.

5. A disk for composite couch rollers in paper making machines, consisting of compressed fibrous material treated, at its inner portion about the shaft, with an agglutinating substance whereby said portion is made rigid and thereby retains the material in its compressed form. r

6. The process of making disks or sections for composite rollers consisting in placing fibrous material about a core, impregnating the inner portion of said material about the core With'a cement, firmly compressing said material and holding it under pressure until the cement hardens.

7. The process of making disksor sections for composite rollers, consisting in wrapping layers of fibrous material about a perforated core, injecting a cement into the portion thereof adjacent to the core, compressing said material and holding it in compressed form until the cement hardens.

8. The process of making disks or sections for composite rollers, consisting in placing a cylindrical mass of fibrous material about a suitable core, applying pressure axially to said mass at its outer peripheral portion, injecting cement into its inner peripheral portion, allowing the cement to become nearly hard and then applying axial pressureto the inner peripheral portion until the cement becomes hard.

9. A perforated disk or washer for composite couch rollers, consisting of firmly compressed fibrous material held rigidly together at its inner peripheral portion. 7

10. A centrally perforated disk for composite couch rollers, consisting of carded Wool impregnated throughout its inner peripheral portion with cement.

In testimony whereof, I afiix my signature, in presence of two witnesses.

WILLIAM E. SHEEHAN- Witnesses:

"Lo'rrin PRIOR,

FREDERICK CAMERON.

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