IMPROVEMENTS IN COMPOSITIONS FOR THE TREATMENT OF STONE, WOOD, METAL, OR OTHER ARTICLES OR MATERIALS IN ORDER TO RENDER THE SAME. IMPERVIOUS TO AIR, WATER, OR ATMOSPHERIC INFLUENCES
Year: 1881

page_text: LETTERS PATENT to John Henry Johnson, of 47, Lincoln's Inn Fields, in the
County of Middlesex, Gentleman, for an Invention of " IMPROVEMENTS IN
COMPOSITIONS FOR THE TREATMENT OF STONE, WOOD, METAL, OR OTHER
ARTICLES OR MATERIALS IN ORDER TO RENDER THE SAME. IMPERVIOUS TO
AIR, WATER, OR ATMOSPHERIC INFLUENCES." A communication from
abroad by the Firm of G. O. Kramer and Company, of Osnabrück, Prussia,
in the Empire of Germany.
PROVISIONAL SPECIFICATION left by the said John Henry Johnson at the
Office of the Commissioners of Patents on the 28th October 1881.
JOHN HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of Middlesex,
Gentleman. "IMPROVEMENTS IN COMPOSITIONS FOR THE TREATMENT OF STONE,
WOOD, METAL, OR OTHER ARTICLES OR MATERIALS, IN ORDER TO RENDER THE
SAME IMPERVIOUS TO AIR, WATER, OR ATMOSPHERIC INFLUENCES." A com-
munication from abroad by the Firm of G. O. Kramer and Company, of Osnabrück,
Prussia, in the Empire of Germany.
This Invention relates to the preparation and use of a composition consisting of
a mixture of boiled tar and saw dust, applicable to the treatment of stone, wood,
iron, and other metals, sail cloth, paste board, and the like.
from 120
In carrying out this Invention, tar is boiled to a temperature of, say,
to 140 degrees, and to the boiled tar is added saw dust, dry and well pulverized,
which becomes absorbed in or incorporated with the tar.
The product is then again boiled and mixed with tar, when it will form a tough
and solid composition, which unites firmly with the article on which it is spread,
making the same weather, water, and air proof.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Henry Johnson in the Great Seal Patent Office on the
26th April 1882.
JOHN HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of Middlesex,
Gentleman. "IMPROVEMENTS IN COMPOSITIONS FOR THE TREATMENT OF STONE,
WOOD, METAL, OR OTHER ARTICLES OR MATERIALS, IN ORDER TO RENDER THE
SAME IMPERVIOUS TO AIR, WATER, OR ATMOSPHERIC INFLUENCES." (A com-
munication from abroad by the Firm of G. O. Kramer & Co., of Osnabrück, Prussia,
in the Empire of Germany.)
This Invention relates to the preparation and use of a composition consisting of
a mixture of boiled tar and saw dust, applicable to the treatment of stone, wood,
iron, and other inetals, sail cloth, paste board, and the like, in order to render them
impervious to air and water, and capable of resisting atmospheric influences.
In carrying the said Invention into effect, the tar is boiled or heated to n
temperature of one hundred and forty degrees Celsius, and to the tar thus boiled
or heated there is added dry saw dust in a well pulverised or finely-divided
condition. The saw dust thus added becomes absorbed in or amalgamated or
incorporated with the tar..
It is preferred to use about equal parts by measure of saw-dust and tar, but I do
not bind myself to these proportions.
The product is then again boiled and mixed with tar, the added țar being in the
proportion of about two parts by measure to about one part by measure of the said
product, but these precise proportions are not essential. The composition thus
made will be tough and solid, and will unite firmly with the article, surface, or
material on which it is spread, or to which it is applied, making the said article,
surface, or material water and air proof.
The said composition may be applied whilst hot, it being spread upon the
surface or article or material by means of brushes or otherwise, or the articles may
be dipped into the hot composition. Or the composition may be used as mortar or
cement, or in any other suitable manner.
Having now described and particularly ascertained the nature of the said
Invention and the manner in which the same is or may be used or carried into
effect, I would observe in conclusion that what I consider to be novel and original
and therefore claim as the Invention secured to me by the hereinbefore in part
recited Letters Patent is,-
The composition for the treatment of stone, wood, metal, or other articles or
materials, in order to protect them from air, water, and atmospheric influences,
the said composition consisting of tar and saw dust combined, as herein before
described.
In witness whereof, I, the said John Henry Johnson, have to this my
Specification set iny hand and seal, the Twenty first day of April, One
thousand eight hundred and eighty two.
J. HENRY JOHNSON. (L.S.)