USRE13127E - Calenderina-boli - Google Patents

Description

J. L. PERKINS.

GALENDERING ROLL.

APPLICATION TILED MAB..8, 1910.

Reissued July 5,1910.

UNITED STATES PATENT OFFICE.

JOHN LEWIS rnzamns, or HOLYOKE, mssacnusn'r'rs.

GALENDERING-BOLIJ.

Specification of Reissued Letters Patent.

Reissued July5, 1910.

Original No. senses, dated m 30, 1907,.Seria1'No. 350,485. Application for reissue filed mum's, 1910.

i Serial No. 548,100; I V

Division A.

i To all whom it may concern:

Be it known that I, JoHN"Lnwrs Pine Kms, a citizen of the United States of America, and a resident of Holyoke, in the county of Hampden and State ofMassachusetts, have invented. certain new and useful Im rovements in calendering-Rolls, of

which the following is a full, clear, and exact description.

This invention consists in a calenderin roll constructed substantially as illustrated in the accompanying drawings, and'as set forth in the description hereinafter given a one of the annular blocks or c eeses ,and pointed out in the claims, for results and advantages hereinafter described and explained.

he present case is an ap lication for a' divisional reissue of Letters granted July 30, 1907, of which I am now atent 861,888,

sole owner, the parent application being filed of even date with this case and bearing Serial Nuixiber'548,10ll

shown in Fig. 4, portions of thin layers ofthe carded cotton being broken awa to show the relative arrangement of the bers of the adjacent layers, and Fig. 4: is a side i elevation of the complete calendering roll with one end portion thereof shown in central longitudinal section. The roll consists of a central shaft or arbor a and an encircling body I) of cotton having the majority of the fibers thereof substantially radially disposed, said body of cotton bein by a hydraulic rain-exerting hundreds -0 tons pressure, compressed to hard condition, the roll being made or finished with a smooth peripheryof uniform character throughout, and susceptible of having the same uniform character when re finished or. turned from time to time' after "protracted use, it'being'particularly emphasized that the majority of the fibers of the cotton are throughout the entire body of the roll in endwise resentation to the peri h-' ery,said calen ering roll, furthermoreglxaing provided with metallic end heads be- :tween which the body of the roll is confined in its hard compression. In carryin most practice. 1e and expeditious manner, I build up annular blocks or cheeses 10, 10, of

the fibers thereof arranged radially placing the joints of one layer at a slight' angle to those of the next, and soon successlvely. Thus itwill be seen that the joints formed between the segments of one layer will be covered by. the central parts of the segments of ad'acent layers in a manner clearly depict in Fig. 2. pline cuts 12 are formed 1n the body in opposition at the boundary of the central opening therein, the body being fitted about the roll shaft (1 to which one of the endheads c is secured, and this with several other of the so produced cheeses are subjected for a suitably longer time to an extremely high hydraulic pressure until the portion of the body of the roll constituted by a given number of cheeses is com ressed to a suitably solid and hard con ition.

Additional numbers of the annular blocks I or cheeses are then added on the roll shaft and subjected-to a squeezin action in the hydraulic-prem until the ro body of sufiicient length is completed, whereupon the other end head is applied and secured in an alread well known manner.

In the drawings, 15, 15, represent the dif ferent superimposed layers of the cotton out this invention inpthe segmental layers of cotton felt carded with carded with the fibers thereof in radial arrangement. The layers are each in the form of an annulus and offset so that the fibers thereof are arranged at say from 20 to 25 degreesto. those of the next, each layer being made of a plurality of segments matched together, preferably with their edges'slightly overlappin practically incidental to the make-up o the cheese, the parallel fibers in each segment being radial to the roll axis.

As well known, a calendering machine usually com rises a stack of calendering rolls, a numger' of which are metallic rolls,

. while other and relatively intermediate rolls are those having a non-metallic bod The character or qualit of the resistance of the body of non-me 'c roll is of 'the utmost importance for surfacing or fin shin paperand cloth. in some cases rolls ha are adapted for a given required .quahty of 'finish while in many other cases alternated calender rolls having hard compressed cotton bodies ma only be employed, and a cotton body rol has acquired an established status in the art of calendering. Cottonbody rolls have, however, so'far as produced for commercial purposes, usuall been made from #17 cotton with the fi rs thereof somewhat untrue and require to be newly can be no returned and refinished, the so refinished roll will be as efiective and satisfactory as it was in its initial condition of completed manufacture.

'It has been proposed to construct a roll made up of layers or comparatively thin bodies of cotton, eachlayer consisting of a plurality of films or sheets of carded cotton, the fibers of each sheet being parallel, and each sheet relatively to the next beingare ran ed with its fibers at substantially right ang es to those of the next, but such a roll, so far as known, has never been commercially produced,' and such 'roll could not possess the quality of having the majority of the fibers thereof in a substantially radial disposition, for while half of the fibers will be radial to opposite peri heral ortions of the roll body, another ull hal of the fibers will be in sidewise instead of endwise presentation to the same iven opposite peripheral portions of the r0 1, and there ractical uniformity and homogeneity in c aracter of the roll body both at paper stantially'radiallyv disposed, said body shaft, andan encircling its surface and inside thereof, as are the aim and accomplishment of this invention.

I furthermore "find it advantageous to employ cotton strands 16 which may betwisted threads or slivers, or rovings, incor- What I claim:

1. A paper calendering roll consisting of a centra shaft and an encircling body of cotton having the majority of its fibers 'sub o cotton being compressed to hard condltion andmade with a smooth peri' hery of uniform character throughout, and relatively to which periphery the majority of' thefibers are in endwise presentation, and the metallic end heads between which the bodyof the roll is confined in its hard compression.

2. A paper calendering roll including a shaft and an encircling body of cotton com-' ppsed of a e(pluralit ing form of a p urality of segments, the fibers of each segment being radially dispoged with respect to the periphery of said bo y.

3. A calendering roll com rising a central body of cotton composed of a series of layers, each layer being composed of a series of se ments, the" fibers of each segment being radia to the periphery of the body, the joints between the segments of each layer being out of alinement with the joints of the segments of adj acent layers. Y

4. A calendering roll com rising a central shaft, and an encircling body of cotton composed of a series of layers, each layer being composed of a series of segments, the joints between the segments of each layer being out of alinement with the joints of the segments of adjacent layers.

JOHN LEWIS PERKINS.

Witnesses: p

F. P. Cmvnnann, WM. S. Bonn.

of layers, each layer

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