AN IMPROVED WRITING PAPER
Year: 1867

page_text: LETTERS PATENT to Bristow Hunt, of No. 1, Serle Street, Lincoln's Inn, in
the County of Middlesex, Gentleman, for the Invention of "AN IMPROVED
WRITING PAPER."-A communication from abroad by Joseph Eves Hover,
United States of A
Sealed the 23rd July 1867, and dated the 30th January 1867.
PROVISIONAL SPECIFICATION left by the said Bristow Hunt at the
Office of the Commissioners of Patents, with bis Petition, on the 30th
January 1867.
I, BRISTOW HUNT, of No. 1, Serle Street, Lincoln's Inn, in the County of
Middlesex, Gentleman, do hereby declare the nature of the said Invention
for "AN IMPROVED WRITING PAPER," (a communication to me from abroad by
Joseph Eves Hover, of Philadelphia, Pennsylvania, United States of America,)
to be as follows:-
It is well known that the ordinary writing inks or fluids when deposited
on ordinary paper will not attain their deepest color until they have been
exposed to the atmosphere for a sufficient length of time for the materials in
the ink to become oxidized, and that for this reason many writings are pale
and indistinct for a long time after they are executed. Many efforts bave
beretofore been made to manufacture an ink which would be of a deep color
when first placed upon the paper; these efforts, however, have been but
partially successful, as the inks, although darker in color, are also necessarily
thick and will not flow with the desired freedom from the pen.

page_text: In order to overcome this difficulty the Inventor manufactures a writing
paper by coating the surface of an ordinary paper with pulverized chalk,
magnesia, or other substance which will neutralize the acids in the ordinary
inks, the chalk being in some instances mixed with a solution of alum before
being applied to the paper. When a mixture of chalk and alum is employed
the proportions of the materials vary according to the nature of the paper,
but five grains of alum and thirty grains of chalk may be generally used with
each ounce of water, the mixture being applied with a brush, or in any other
suitable manner. If necessary the paper when dry may be passed between
calendering rollers.
When paper thus prepared is written upon with any of the ordinary inks
the acid in the latter will be instantly neutralized by the material on the
surface of the paper, and the coloring matter in the ink instead of being held
in solution or suspension will be immediately precipitated, an ink will thus in
a few moments acquire a depth of color which it would not possess for hours
after being deposited upon ordinary paper. A weak solution of gum or
other material which will cause the chalk to adhere to the paper may be
substituted for the alum, or the chalk, or its equivalent may be used alone
and may be deposited on the surface of the paper in any suitable manner.
In some instances chalk may be mixed with the ordinary size, so as to apply
it to paper before the latter is calendered, the coating mixture being colored
when colored papers are made.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Bristow Hunt in the Great Seal Patent Oflice on the 30th
July 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, BRISTOW
HUNT, of No. 1, Serle Street, Lincoln's Inn, in the County of Middlesex,
Gentleman, send greeting..
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirtieth day of January, in the year of our Lord One
thousand eight hundred and sixty-seven, in the thirtieth year of Her reign, did,
for Herself, Her heirs and successors, give and graut unto me, the said
Bristow Hunt, Her special licence that 1, the said Bristow Hunt, my
executors, administrators, and assigns, or such others as I, the said Bristow
Hunt, 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

page_text: 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 IMPROVED WRITING PAPER,"
being a communication to me from abroad by Joseph Eves Hover, of Phila-
delphia, Pennsylvania, United States of America, upon the condition (amongst
others) that I, the said Bristow Hunt, 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 Bristow Hunt, do hereby declare the
nature of the said Invention, and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement
in writing, that is to say:-
It is well known that the ordinary writing inks or fluids when deposited on
ordinary paper will not attain their deepest color until they have been exposed
to the atmosphere for a sufficient length of time for the materials in the ink
to become oxidized, and that for this reason many writings are pale and
indistinct for a long time after they are executed. Many efforts have hereto-
fore been made to manufacture an ink which would be of a deep color.when
first placed upon the paper; these efforts have been but partially successful,
as the inks although darker in color are also necessarily thick, and will not
flow with the desired freedom from the pen.
In order to overcome this difficulty the Inventor manufactures a writing
paper by coating the surface of an ordinary paper with pulverised chalk,
magnesia, or other substance which will neutralize the acids in the ordinary
inks, the chalk being in some instances mixed with a solution of alum before
being applied to the paper.
Such being the nature and object of the said Invention for "An Improved
Writing Paper," I will now proceed to describe more in detail the manner in
which the same is to be or may be performed or carried into practical effect,
that is to say:-
When a mixture of chalk and alum is employed the proportions of the
ma'erials vary according to the nature of the paper, but five grains of alum
and thirty grains of chalk may be generally used with each ounce of water;
the mixture being applied with a brush or in any other suitable manner.
necessary the paper when dry may be passed between calendering rollers.
When paper thus prepared is written upon by any of the ordinary inks the
If

page_text: acid in the latter will be instantly neutralized by the material on the surface of
the paper, and the coloring matter in the ink instead of being held in solution
or suspension will be immediately. precipitated, an ink will thus in a few
moments acquire a depth of color which it would not possess for hours after
being deposited upon ordinary paper. A weak solution of gum or other
material which will cause the chalk to adhere to the paper may be substituted
for the alum, or the chalk, or its equivalent may be used alone, and may be
deposited on the surface of the paper in any suitable manner..
In some instances chalk may be mixed with the ordinary size, so as to apply
it to the paper before the latter is calendered, the coating mixture being
colored when colored papers are made.
Having now described the nature and object of the said Invention for "An
Improved Writing Paper," together with the manner in which the same is to
be or may be performed, I would remark in conclusion that without limiting
the Invention to the special ingredients herein mentioned, or to any particular
mode of applying the coating to paper, I claim as the Invention (commu-
nicated to me by the above-named Joseph Eves Hover) writing paper, the
surface of which is coated with chalk or other material which will neutralize
the acids in writing inks or fluids.
In witness whereof, I, the said Bristow Hunt, have hereunto set my
land and seal, this Twenty-ninth day of July, in the year of our Lord
One thousand eight hundred and sixty-seven.
BRISTOW HUNT. (L.S.)