AN IMPROVEMENT IN THE MANUFACTURE OF OF THE COMPOSITION USED FOR PRINTERS' ROLLERS
Year: 1857

page_text: LETTERS PATENT to Robert Harrild and Horton Harrild, of Farringdon
Street, in the City of London, Printers' Composition Roller Manu-
facturers, for the Invention of "AN IMPROVEMENT IN THE MANUFACTURE OF
Sealed the 23rd April 1858, and dated the 23rd October 1857.
PROVISIONAL SPECIFICATION left by the said Robert Harrild and
Horton Harrild at the Office of the Commissioners of Patents, with their
Petition, on the 23rd October 1857.
We, ROBERT HARRILD and HORTON HARRILD, of Farringdon Street, in the,
City of London, Printers' Composition Roller Manufacturers, do hereby declare
the nature of the said Invention for "AN IMPROVEMENT IN THE MANUFACTURE
OF THE COMPOSITION USED FOR PRINTERS' ROLLERS," to be as follows:-
Our Invention consists in the method of reducing the glue to a proper state.
for combining with molasses and the other ingredients usually employed
in the manufacture of the printers' rollers composition without first soaking it.
in water. It has always been a great object to obtain the glue as free from.
moisture as possible, as then it will take up a greater quantity of molasses;
the composition when finished will be much more durable, and will not be so
prejudicially affected by atmospheric influences as at present. Instead then of
soaking the glue in water, previously to melting it, we place the glue in a
closed jacketted pan or vessel, and admit steam into the jacket and then steam

page_text: at a high pressure into the interior of the pan. In a short space of time the
glue under the action of the steam in the heated pan becomes converted into
a jelly like mass, and this being stirred will cause the glue to become entirely
dissolved. The steam is next shut off from the glue and interior of the pan,
and the molasses and other usual ingredients added when the composition is
finished in the manner now ordinarily practised.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Robert Harrild and Horton Harrild in the Great Seal Patent
Office on the 23rd April 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, ROBERT
HARRILD and HORTON HARRILD, of Farringdon Street, in the City of London,
Printers' Composition Roller Manufacturers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-third day, of October, in the year of our. .Lord
One thousand eight hundred and fifty-seven, in the twenty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us, the
said Robert Harrild and Horton Harrild, Her special licence, that we, the
said Robert Harrild and Horton Harrild, our executors, administrators, and
assigns, or such others as we, the said Robert Harrild and Horton Harrild,
our 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 THE COM-
POSITION USED FOR PRINTERS' ROLLERS," upon the condition (amongst others) that
we, the said Robert Harrild and Horton Harrild, or one of us, our executors
or administrators, by an instrument in writing under our or their, or one of our
or 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 we, the said Robert Harrild and Horton Harrild,
do hereby declare the nature of our said "Invention, and in what manner
the same is to be performed, to be particularly. described' and ascertained in
and by the following statement thereof, that is to say:
:-
Our Invention consists in the method of reducing the glue to a proper state

page_text: for combining with molasses and the other ingredients usually employed in the
manufacture of the printers' rollers composition without first soaking it in
water. It has always been a great object to obtain the glue as free from
moisture as possible, as then it will take up a greater quantity of molasses;
the composition when finished will be much more durable and will not be so
prejudicially affected by atmospheric influences as at present. Instead then
of soaking the glue in water, previously to melting it, we place the glue in a
closed jacketted pan or vessel and admit steam into the jacket, and then steam
at a high pressure into the interior of the pan. In a short space of time the
glue under the action of the steam in the heated pan becomes converted into
a jelly like mass; we then shut off steam from the interior of the pan or vessel
and remove the cover, when water produced from the condensation of the
steam will be apparent floating on the surface of and unmixed with the glue.
We draw this water off by suction or other suitable means, add the molasses
and other usual ingredients, and finish the composition in the manner now
ordinarily practised.
And having now described the nature of our said Invention, and in what.
manner the same is to be performed, we declare that we claim dissolving the
glue employed in the manufacture of the composition used for printers' rollers
in the manner and for the purpose herein-before described.
In witness whereof, I, the said Robert Harrild, for myself and on behalf
of the said Horton Harrild, have hereunto set my hand and seal, this
Twenty-third day of April, One thousand eight hundred and fifty-
eight.
ROB HARRILD. (L.S.)