US312945A - Paper or leatheroid - Google Patents

Description

(No Model.)

l E. ANDREWS.

MANUPAGTURE 0F PARGHMENT PAPER 0R LBATHEROID.

No. 312,945. Patented Fe'b241885.

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EMEBY ANDR EWS, OF KENNEBUNK, MAINE, ASSIGNOR TO THE LEATI-IEROID MANUFACTURING COMPANY, OF SAME PLAGE.

MANUFACTURE OF PARCHIVIENT-PAPER OR LEATHEROIID.

SPECEFICATIGN forming part of Letters Patent No. 312,915, dated February 2-, 1885.

Application filed September 24, 1884.

To @ZZ whom, t may concern: r

Be it known that' I, EMERY ANDREws, of Kennebunk, in the county of York and State of Maine, have invented certain new and use- 5 fnl Improvements in the Manufacture of Parchment-Paper or Leatheroid, of which the following, taken in connection with the accompan ying drawings, is a specification.

My invention relates to the process of and apparatus to be used inthe manufacture of the parchmentized paper material described in Letters Patent N o. 198,382, granted to T. and T. S. Hanna on the 18th day of December, A. D. 1877; and it consists, first, in treating paper with acid, forming a laminated board by winding said paper around a cylinder or drum of suitable diameter until the material is of the desired thickness, cutting longitudinally through one side of the paper tube 2o thus formed and flattening out the material to form a sheet, and then subjecting said flat sheet to a bath of refrigerated liquid, preferably at a temperature below 32, for the purpose of removing the acid.

1t further consists in certain novel combinations and arrangements of parts in an apparatus for use in removing the acid from the material, which will be best understood by refer ence to the description of the drawings,'aud to the claims, to be hereinafter given.

Figure 1 of the drawings is an elevation of my improved apparatus. Fig. 2 is a vertical section on line x x on Fig. 1; and Figs. 3 and 4t are respectively a plan and transverse section of one of the racks or frames for supporting the sheets of material.

A is a tank or reservoir, to be filled with a refrigerated liquid, preferably saltwater with ice immersed therein; and B is another tank, through which said refrigerated liquid is circulated by means of the pump C and pipes D, E, and G. Y

FFF, Fig. 2, are a series of racks or frames, each made up of two longitudinal bars, a a, and a series of lighter bars or slats, b b, as shown in Figs. 3 and 4.

In carrying out my invention the sheets of board are formed from acid-treated paper, substantially in the manner described in the before-cited Letters Patent. Asheet of freshmade material is placed flat in the bottom of (No model.)`

the tank B, and one of the frames F is placed in said tank in such a manner that the bars'a a shall rest upon the bottom Iof the tank,upon opposite sides of the sheet of material c, and the bars b b shall be above said sheet, but not touching it. Another sheet c is then placed upon .the bars b b, and another frame F is placed upon the first one, and so on until the tank B is full or nearly so. The tankAhaig- 6o ing been previously charged with salt-water and ice, the pump G is set in operation and sucks the refrigerated liquid contained in the tank A through the pipe G and inlet-valve H, and discharges it through the valve I and pipe E into the tank B. Vhen the tank B is f'ull,or nearly so, the liquid will escape therefrom as fastasitis pumped in andfallthrough the overflow-pipe D into the tank A again, thus maintaining a complete circulation ofthe 7o refrigerated liquid over and among the several sheets of material contained in the tank B,and at the same time, by virtue of said circulation, maintaining the temperature of the liquid in both tanks at the desired point, preferably below 329. When the sheets have been subject ed to the action of the circulating refrigerated liquid a sufficient length of time to wash out all the acid, the sheets are removed and dried, when they are ready for use. It is obvious that the tank A must be considerably larger than the tank B, or else both tanks should be filled with salt-water before setting the pump in operation 5 or the tanks may be of about equal size, and when thetank B has 8 5 been filled by pumping from tankA a further supply of salt-water must be introduced into the tank A, from which to draw in keeping up the circulation. A It has been found that iu washing out the 9o acid in a bath of' water of ordinary tempera` ture a gas forms, which causes blisters upon the matcrial,wl1ich is very objectionable. This difficulty is entirely overcome by the use of a refrigerated liquid, as herein described.

lVhat I claim as new, and desire to secure by Letters Patent of the United States, is

1. The process of manufacturing parchmentized paper board by first treating the paper with acid, forminga laminated board by windroo ing said acid-treated paper around a cylinder or drum until the material is of the desired thickness, cutting longitudinally through one side of the papel' tube thus formed and Hattening out the material to form a sheet, and

then subjecting said flat sheet to a bath of refrigerated liquid, substantially as described.

2. That improvement in the art of making leatheroid or parchmentized paper board rac-ks or frames F F, the Vpump C, and pipes D, E, and G, all arranged and adapted to operate substantially as described.

4. In an apparatus forwashing out sheet material, the combination of the tank B and a series of racks or frames, F F, arranged and adapted to operate substantially as and for the purpose described.-

4 In testimony whereof I have signed my name to this specification, in the presence of two subscrbingwitnesses, on this 19th day of September, A. D. 188i.

EMEEY ANDREWS.

Vitnesses:

STEPHEN MOORE, HOMEE ROGERS.

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