AN IMPROVEMENT IN THE MANU- PACTURE OF PAPER IN ORDER TO RENDER THE SAME WATERPROOP
Year: 1856

page_text: LETTERS PATENT to William Muschamp, of the Tyne Paper Mill Com-
pany,
Gateshead, for the Invention of "AN IMPROVEMENT IN THE MANU-
PACTURE OF PAPER IN ORDER TO RENDER THE SAME WATERPROOP."
PROVISIONAL SPECIFICATION left by the said William Muschamp at
the Office of the Commissioners of Patents, with his Petition, on the
29th March 1856.
I, WILLIAM MUSCHAMP, of the Tyne Paper Mill Company, Gateshead,
do hereby declare the nature of the Invention for "AN IMPROVEMENT IN
THE MANUFACTURE OF PAPER IN ORDER TO RENDER THE SAME WATERPROOF," to be as
follows:-
This Invention has for its object an improvement in the manufacture of
paper in order to render the same waterproof. For which purpose, the paper
after it has been dried is caused to pass into or be saturated with a solution or
preparation of the following substances or matters: soap (by preference good
white soap) is dissolved in pure water, and boiled alum is also dissolved in
water, and glue and gum arabic are also dissolved in water; these three
solutions are mixed together, and the paper is passed into or is saturated
with such combined solutions; the paper is then pressed between rolls and
dried in the ordinary manner.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Muschamp in the Great Seal Patent Office on the
23rd September 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
MUSCHAMP, of the Tyne Paper Mill Company, Gateshead, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-ninth day of March, in the year of our
Lord One thousand eight hundred and fifty-six, in the nineteenth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said William Muschamp, Her special licence that I, the said William
Muschamp, my executors, administrators, and assigns, or such others as I,
the said William Muschamp, my executors, administrators, and assigns,
should at any time agree with, and no others, from time to time and at all
times thereafter 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 "AN
IMPROVEMENT IN THE MANUFACTURE OF PAPER IN ORDER TO RENDER THE SAME
WATERPROOF," upon the condition (amongst others) that I, the said William
Muschamp, 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 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 Muschamp, do hereby declare
the nature of the 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 thereof, that is to say :-
This Invention has for its object an improvement in the manufacture of
paper, in order to render the same waterproof. For which purpose, the paper
after it has been dried is caused to pass into or be saturated with a solution or
preparation of the following substances or matters: soap (by preference good
white soap) is dissolved in pure water, and boiled alum is also dissolved in
water, and glue and gum arabic are also dissolved in water; these three solu-
tions are mixed together, and the paper is passed into or is saturated with
such combined solutions; the paper is then pressed between rolls and dried in
the ordinary manner.

page_text: Having thus stated the nature of my said Invention, I will proceed more
fully to describe the manner of performing the same.
The preparation or composition I prefer to employ is as follows:-In two
gallons of soft water in a suitable vessel I dissolve 24 ozs. of allum; in a
separate vessel I dissolve 4 ozs. of soap (by preference white soap) and 1 oz.
of borax, which solution is boiled for about ten minutes; and in another
vessel I dissolve in sufficient water for the purpose 2 oz. of gum arabic and
6 ozs. of glue; these three solutions (when the matters therein are dissolved)
are then mixed together, and placed in a suitable trough, the compound solu-
tion being kept slightly warmed when used. The paper, which has been
previously dried or partially so, is continuously conducted into and through
such compound solution in the trough, and is gradually drawn out from the
same as it becomes thoroughly saturated. The paper as it comes from the
solution is pressed between rollers to remove all excess of the solution, and
then the paper is dried in the usual manner. The proportions of the materials
above mentioned are those which are preferred, but I do not confine myself
thereto, as the same may be varied and yet produce a waterproofing effect
according to my Invention.
I would state that the use of borax is not essential, and may be dispensed
with, but I prefer to use it.
Ilaving thus described the nature of my said Invention, and the manner of
performing the same, I would have it understood that what I claim is, the
saturating dried or partially dried paper with a solution of alum, soap, glue,
and gum arabic, and thus rendering the same waterproof, as herein described.
In witness whereof, I, the said William Muschamp, have hereunto set
my hand and seal, this Twentieth day of September, in the year of our
Lord One thousand eight hundred and fifty-six.
Witness,
S. CARPMAEL.
WILLIAM MUSCHAMP. (L.B.)