US1402553A - Wood stain and process of making same - Google Patents

Description

PATENT orrics.

KARL WESSEL, on ST. PAUL, MINNESOTA.

. WOOD STAIN AND PROCESS OF MAKING SAME.

No Drawing.

To all whom it may concern:

Be it known that I, KARL WESSEL, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Wood Stains and Processes of Making Same; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention has for its object to provide a highly efficient and improved wood stain; and to such ends, generally stated, consists of the novel process and novel combination of ingredients hereinafter described and defined in the claims.

As a base or chief element for this wood stain, I use what is generallyknown as a digester liquor obtained in the treatment of.

flax and other vegetable fibers in closed digesters with caustic soda or lime and soda ash in the presence of steam. The nature of the product will be made clear by the following description of the process by which it is made. Of course, the product may be made in any desired quantity, but for illustration, it may be assumed that the first step is performed by taking one thousand gallons of water, one thousand pounds of vegetable fiber, preferably of flax straw or tow and about thirty pounds of caustic soda and boiling the same for about ten hours more or less in a closed digester of a form commercially well known.

The so called first step of the process is one that is usually performed in the preparation of flax tow and similar fibrous materials priu'iarily to the use thereof for various commercial purposes, suchas the manufacture of rugs and other flax products. The said first step is also performed in the preparation of flax and other vegetable fibers for use in making coarse articles, such as heat insulating material.

Specification of Letters Patent.

Patented Jan. 3,1922.

Application filed April 11, 1918. Serial No. 227,973.

As a second step of the process, I mix into the above digester liquor about twenty or twenty five per cent of the caustic soda and about five per cent ofalcohol, preferably of wood alcohol.

As a third step of the process, I mix into this liquor finely ground coloring material preferably a dry powdered mineral paint and the liquid mixture is then thoroughly commingled by agitation. The product ob tained is a very low cost and highly efficient wood stain; Of course, the amount of mineral coloring matter and the coloror character thereof will dependon the color shade desired in the stain.

Of course, the proportions of the ingredients named may be varied. I have obtained good results by the use of approximately five per cent of caustic soda in proportion to the amount of water. In lieu of caustic soda, I find that I can use soda ash and lime in the proportions, in respect to each other,

of three per cent of the former with five per cent of the latter.

What I claim is:

1. The process of making wood stain which consists in boiling together water,

caustic soda and a vegetable fiber, and in thereafter adding caustic soda thereto.

2. The process of making wood stain which consists in boiling together water, caustic soda and a vegetable fiber, and in thereafter adding caustic soda and alcohol thereto.

3. A wood stain having as its main body portion a waste digester liquor obtained in the treatment of vegetable fiber, and having caustic soda and alcohol added thereto.

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

KARL 'WESSEL. I

Witnesses CLARA DEMAREST, F. D. MERCHANT.