IMPROVEMENTS, IN THE MANUFACTURE OF BLOTTING PAPER.
Year: 1864

page_text: LETTERS PATENT to James Brown, of Aldgate,, in the City of London,
Chemist, and Astley Paston Price, of 47, Lincoln's Inn Fields, in the
County of Middlesex, Chemist; for the Invention of "IMPROVEMENTS, IN
THE MANUFACTURE OF BLOTTING PAPER.".
a
PROVISIONAL SPECIFICATION left by the said James Brown and Astley
Paston Price at the Office of the Commissioners of Patents, with their
Petition, on the 11th May 1864.
We, JAMES BROWN, of Aldgate, in the City of, London,, Chemist, and
ASTLEY PASTON PRICE, of 47, Lincoln's Inn Fields, in the County of
Middlesex, 'Chemist, do hereby declare the nature of our said Invențion
for IMPROVEMENTS IN THE MANUFACTURE OF BLOTTING PAPER," to he, as
follows:-
This Invention consists in incorporating or combining glycerine with the
pulp from which blotting paper is to be made, or in steeping in or impreg
nating blotting paper with glycerine, or with a solution of glycerine,. whereby
the absorbent. properties of the paper are greatly increased...
Another part of our Invention consists in the manufacture of black or
dark colored blotting paper either by dyeing the pulp black or any other
dark color, previous to its manufacture into blotting paper, or by dyeing
the blotting paper when manufactured. Blotting paper so dyed or colored
has a neater appearance on the writing desk inasmuch as any writing
blotted off will be invisible or nearly so on the blotting pad or paper.
•
:

page_text: SPECIFICATION in pursuance of.the.conditions of the Letters Patent, filed
by the said James Brown and Astley Paston Price in the Great Seal
Patent Office on the 11th November 1864.
TO ALL TO WHOM. THESE PRESENTS SHALL COME, we, JAMES
BROWN, of Aldgate, in the City of London, Chemist, and ASTLEY PASTON
PRICE, of 47, Lincoln's Inn Fields, in' the County of Middlesex, Chemist, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eleventh 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
us, the said James Brown and Astley Paston Price,, Her- special license that
we, the said James Brown and Astley Paston Price, our executors, adminis-
trators, and assigns, or such others as we, the. said. James Brown and
Astley Paston Price, our executors, administrators, or 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 "IMPROVEMENTS IN
THE MANUFACTURE OF BLOTTING PAPER," upon the condition (amongst others)
that we, the said James Brown and Astley Paston Price, our executors
or 'administrators, by an instrument in writing under our hands and seals, or
under the hand
and seal of one of us or them, 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 we, the said James Brown and Astley Paston
Price; do hereby declare the nature of our said Invention, and in what
manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement, that is to say:
Our said Invention consists in incorporating or combining glycerine
with the pulp from which blotting paper is to be made, or in steeping in
or 'impregnating blotting paper with glycerine, or with a solution of glycerine,
whereby the absorbent properties of the paper are greatly increased.
In carrying out our Invention we either mix glycerine, or a solution of
glycerine, with the pulp when in. the process of the manufacture. of blotting

page_text: paper; or after such blotting paper has been manufactured. When the
glycerine is to be mixed with the pulp is is most conveniently effected by
adding the same or a solution thereof to the material from which the
blotting paper is to be made, and which material is about to undergo the
pulping process
in what is known as the pulping engine, but we do not
confine. ourselves to this mode of preparation, as the glycerine may be
mixed with or incorporated with the pulp at any time during its produc-
tion or conversion into paper.
$
די
When the blotting paper, or paper manufactured for that purpose, is to be
impregnated with glycerine, or a solution thereof, either by immersion or damping,
we prefer either to pass the paper from a cylinder or roll of paper through a
trough or vessel containing glycerine or a solution-thereof, or to pass the same
between absorbent rollers moistened with glycerine or a solution thereof, and
then subsequently to pass the same over a heated cylinder, as is well under-
stood by paper manufacturers, or to submit the same to a suitable drying
process, but we do not confine ourselves to these methods of manipulating, as
other means may with equal advantage be adopted. The proportions of
glycerine, when either employed as glycerine, or as a solution thereof in
water or other solvent to be added to the pulp so as to produce an improved
blotting paper, varies according to the quality of the pulp employed, and the
degree of humidity or dampness it is desirable it should retain.
We
have found that glycerine added in the proportion of from 10 to 20 parts
by weight, to every 100 parts by weight of paper pulp has given good
results, but we do not confine ourselves either to the mode of admixture or to
the proportions given.
When a solution of glycerine is employed for the immersion into or for
the damping of the blotting paper when manufactured, we have found
that a solution of one part by weight of glycerine, and five parts by weight
of water has given good results, but these proportions vary according to the
quality of the paper employed, and the permanent degree of humidity or
dampness it is desired that the paper should retain.
F
What we have called glycerine in this Specification, and have referred to is
glycerine such as known in commerce.
Having now described and particularly ascertained the nature of our said
Invention, and the manner in which the same is or may be used or carried
into effect, we would observe in conclusion, that what we consider to be
novel and original, and therefore claim as the Invention secured to us by the
herein-before in part recited Letters Patent is,-
First, the incorporating or combining of glycerine or a solution of glycerine

page_text: with the pulp from which blotting paper is to be made for the purpose herein-
before described...
Second, the steeping, or otherwise impregnating of blotting paper in or
with glycerine, or a solution of glycerine, for the purpose herein-before
*described:
In witness whereof, I, the said James Brown, on behalf of myself
and the said Astley Paston Price, have hereunto set my hand and seal
this Tenth day of November, One thousand eight hundred and
sixty-four.