US889235A - Process for making waterproof wood-pulp or jute boards and the product thereof. - Google Patents

Description

PATENTED JUNE 2, 1908.

v 0.1a. JAMESON. PROCESS FOR MAKING WATERPROOF WOOD PULP 0R JUTE BOARDS AND THE PRODUCT THEREOF.

APPLI ATIO I'ILRD 00m. 19,1906.

WITNESSES:

& T Off 'rRocEss FOR MAKING weTE'nPRooF wool)- j I To all whom it'may concern:

a citizen of theUnited'States of America, re-

of said process. I

Boards and the Product Thereof; and I (hereby. declare the following to be afull,-

thanroofing material ofthis class now on the sheets together. Fig. 3 represents the fin- UNITED STATES PAT NT oFrnoE.

.cHAnLE s' B. IJAlHESOhl, IORMANSFIELD, onto.

PULP (5R; Jeri: BOARDS Ann ,THE rnonuer no. 889,235. I

" Be it known that I, OnAnLEsB. J AirnsoN,

siding at Mansfield,in'thecountyof Richland and-State'of Ohio; have invented certain new and useful Improvements in Processes for Making VVaterproof VVood- Pulp, or Jute clear, and exact'descriptionof the invention, such as will enable others skilled-in the artto whichit pertains to makeand use the same.

This invention relates to an improved process for making water-proof wood pulp or jute boards.

The object of this invention is to produce a new water-proof roofing material which will be more impervious to moisture and stronger market and which factured.

My invention consists in cementing together two or more sheets or layers of wood puIp boards or similar material by means of a exible water proof adhesive .substance holding same under pressure until practically dry, forming in hot dies the edges thereof for joints, and finally treating the surfaces of said product with a coating of a water-proof semi fluid substance, such as a siccative oil.

My invention also consists in the product may be cheaply 1nanu-.

In the accompanying drawings Figure 1 represents the sheets of wood pulp or jute before they are cemented together. Fig. 2 re resents the board formed by cementing tie ished product. Fig. 4 is an end view of the finished product.

In carrying out my process I take wood pulp or jute boards or sheets a and b of the desired size and cover one side of one of said boards or sheets with a coating of flexible I water-proof cement and allow this coating of cement to become partially dry but before it has become dry and while in a condition of tackiness I bring the other sheet in contact with the coated surface thereof and innnedi- I ately thereafter place the sheets in a press where I hold them tightly pressed together until the cementing materia has thoroughly i I I I S pec ificationq of Letters Patent. I

- Application filed October 19, 1906..- Serial No, 339,606.

' bound together and indurated than Patented June 2, 1908.

up and down joints (1 adapted overlap the edges of adjacent sheets and to rest on and cover strips of -wood previously ap lied-to the roof surface, by whichthe ovefl I and formed joint portions of the sheets are 'IEtlSGtl above, the general plane of the'roofapping surface to which they are applied, which prevents the rain fromseeping into the up and down joints.

Subsequently to the forming ofthesheets they are 'wat'er-proofed by saturating the sheets (preferably by dipping) witha' drying oil compound after which the sheets are thor-' oughly dried when the sheets will be found to be hardened and stiffened and also rendered impervious to moisture. The sheets may 1 then be painted any color desired.

If for any reason extra thick sheets are required I use additional sheets under the process specified above until the required thickness, is obtainedl However, I have found that two layersor sheets of wood pulp or jute board puttogether by my improved process, as described above, are greatly superior to any roofing sheets heretofore roduced; .lying flatter on the sheathing standing the effects of moisture and of hot sun better and less affected by the handling during transportation and while placing on roofs. By using wood pulp sheets of the thickness I use I have sheets with fewer defects than in the thicker sheets, being in two layers slight mechanical defects in the sepaoards, withrate sheets have no injurious effect on the completed roofing. By the layer of waterproofing cement between the layers of the wood pulp board the saturating or permeating effect of long continued rains even if affecting the'outer layer must necessarily be stopped by the water-proof cement which being protected from injurious action of the weather by the outside layer is better able 1 to withstand the moisture than the cement on the exterior of the sheets. =This effect is enhanced by the fact that my cement and saturating fluid have as a basls a drying Oll of the same general character, which pro-' duees a product of more uniform texture,'

more thoroughly and permanently saturated, can be otherwise obtained.

That I claim is: 1. The process of manufacturing a waterproof roof covering consisting in cementing together two or more sheets of wood pulp or 110 jute board by means of a water proof adhe sive, then drying the same and subsequently hardemn the same bysaturation with Water-proo slccatlve. fluid s bstanoe followed "by'coinplete drying, the b sis of the cement proof roo covering consisting in cementing together two or more wood pulp -or jute, I

boards by "means of a water-proof adhesive, then drying the same and forming thefedges with two bends by which tb le material adj acent the edges-occupies a p ane above that of the general surface of the body of' the sheets, and subsequently hardening the same plete drying, the basis of' the cement and Waterproof siccative fluid being a drying oil. he product of above process for covering roof'sconsisting of a plurality of layers of A Woodfpulpor jute boards united by'waterroof cement to form a solid board hardened y saturation with water-proof sicoative material and subsequent drying, the basis of the cement and waterproof siccative fluid beingI-a-drying oil. 7 p

' 4'; The product ofabove process for covering roofs consisting of a plurality .of layers of wood pulp or jute boards united bywaterroof cement to forrh a solid board hardened y saturationwith water 'proof siccative material and subsequent drying, the edges being formed for overlapping with a portion'adjacent to the edges'in a plane above the lane occupied by the body. of the sheet', the as is of the cement and waterproof siccatlv'e fluid being a drying oil. throughout by saturation with water-proof siccative fluid substance followed by com- In testimony whereof,- I sign the foregoing specification, in the presence of two witnesses.

CHARLES B. JAMESON.

Witnesses:

V1c'ron C. LYNCH, N. L M DONnELL.

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