IMPROVED METHODS OF TREATING CANVAS, TARPAWLINGS, OR OTHER PAINTED CANVAS TO RENDER THEM SUITABLE FOR HOUSEHOLD AND OTHER USEFUL PURPOSES."
Year: 1864

page_text: LETTERS PATENT to William Horne, of the Firm of Horne, Williams,
and Bartlett, of West Ham, in the County of Essex, Chemical
Bleachers, for the Invention of "IMPROVED METHODS OF TREATING
CANVAS, TARPAWLINGS, OR OTHER PAINTED CANVAS TO RENDER THEM SUITABLE
FOR HOUSEHOLD AND OTHER USEFUL PURPOSES."
PROVISIONAL SPECIFICATION left by the said William Horne at the
Office of the Commissioners of Patents, with his Petition, on the 12th
May 1864.
I, WILLIAM HORNE, of the Firm of Horne, Williams, and Bartlett, of
West Ham, in the County of Essex, Chemical Bleachers, do hereby declare
the nature of the said Invention for "IMPROVED METHODS OF TREATING CANVAS,
TARPAWLINGS, OR OTHER PAINTED CANVAS TO RENDER THEM SUITABLE FOR HOUSEHOLD
AND OTHER USEFUL PURPOSES," to be as follows:-
.
I take canvas, by. preference old or waste tarpawlings, their refuse, or
other canvas, painted or not, and subject them to a cold water bath, an!
afterwards treat them in liquids or solutions, composed of the following
ingredients, in or about the proportions named: -Supposing one ton of
tarpawling or painted canvas to be under treatment, I form a solution
of oxalic acid and cold water, 16 ounces of oxalic acid to a hundred
gallons of water, for example, and I soak the material therein for, say,
six hours; I next subject them to the action of a liquid or solution com-

page_text: posed of American potash 25lbs. to the hundred gallons, for example; I
then place them in a solution of sesqui-bicarbonate of ammonia, 25lbs. to the
hundred gallons, for example; I then wash them in warm water; I then place
them in a solution of pearlash, 15lbs. to the hundred gallons, for example;
I then wash them in cold water.
The materials when treated in the manner before described are subjected
to hydraulic or other pressure, are dried, and are cut up into pieces of sizes
varying according to the purposes to which they are to be applied, and are
ready for the market.
In some cases I find it advantageous to subject the materials under treat-
ment to the action of revolving brushes, whereby they are kept continually
in a state of motion, and further, I sometimes do not carry the materials
through all the liquids or solutions before-named, but regulate the process
according to the material under treatment.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Horne in the Great Seal Patent Office on the
12th November 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
HORNE, of the Firm of Horne, Williams, and Bartlett, of West Ham, in
the County of Essex, Chemical Bleachers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twelfth day of May, in the year of our Lord
One thousand eight. hundred and sixty-four, in the twenty-seventh year of
Her reign, did, for Herself, Her heirs and 'successors, give and grant unto
me, the said William Horne, Her special licence that I, the said William
Horne, my executors, administrators, and assigns, or such others as I, the
said William Horne, my executors, administrators, and assigns, should at
any time agree with, and no others, from time to time and at all times there-
after during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain, and
Ireland, the Channel Islands, and Isle of Man, an Invention for "IMPROVED
METHODS OF TREATING CANVAS,.. TARPAWLINGS, OR OTHER PAINTED CANVAS TO
RENDER THEM SUITABLE FOR HOUSEHOLD AND OTHER USEFUL PURPOSES," upon the
condition (amongst others) that I, the said William Horne, my executors or
administrators, by an instrument'in writing under my, or their, or one of
their hands and seals, should particularly describe and ascertain the nature.

page_text: of the said Invention, and in what manner the same was to be performed,
and cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said William Horne, do hereby declare
the nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement, that is to say :-
I take canvas, by preference old or waste, tarpawlings, their refuse, or
other canvas, painted or not, and subject them to a cold water bath, and
afterwards treat them in liquids or solutions composed of the following
ingredients, in or about the proportions named:-Supposing one ton of tar-
pawling or painted canvas to be under treatment, I form a solution of oxalic
acid and cold water, 16 ounces of oxalic acid to a hundred gallons of water,
for example, and I soak the material therein for say, six hours; I next subject
them to the action of a liquid or solution composed of American potash, 25lbs.
to the hundred gallons, for example; I then place them in a solution of
sesqui-bicarbonate of ammonia, 25lbs. to the hundred gallons, for example;- I
then wash them in warm water; I then place them in a solution of pearlash,
15lbs. to the hundred gallons, for example; I then wash them in cold water.
The materials when treated in the manner before described are subjected
to hydraulic or other pressure, are dried, and are cut up into pieces of sizes
varying according to the purposes to which they are to be applied, and are
ready for the market.
In some cases I find it advantageous to subject the materials under treat-
ment to the action of revolving brushes, whereby they are kept continually
in a state of motion, and further I sometimes do not carry the materials
through all the liquids or solutions before named, but regulate the process
according to the material under treatment.
In witness whereof, I, the said William Horne, have hereunto set
my hand and seal, this Eleventh day of November, in the year of
our Lord One thousand eight hundred and sixty-four.
WILLIAM HORNE. (L.s.)