AN IMPROVED COMPOSITION FOR THE MANUFACTURE OF PRINTING ROLLERS
Year: 1869

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 IMPROVED COMPOSITION FOR THE
MANUFACTURE OF PRINTING ROLLERS."
Sealed the 8th March 1870, and dated the 28th September 1869.
PROVISIONAL SPECIFICATION left by the said Robert Harrild and
Horton Harrild at the Office of the Commissioners of Patents, with
their Petition, on the 28th September 1869.
We, ROBERT HARRILD and HORTON HARRELD, of Farringdon Street,
in the City of London, Printers' Composition Roller Manufacturers,
do hereby declare the nature of the said Invention for "AN IN-
PROVED COMPOSITION FOR THE MANUFACTURE OF PRINTING ROLLERS," to be as-
follows:-
The object of our Invention is to manufacture a composition possessing
greater durability than the ordinary compositions, which will not be

page_text: affected by change of temperature, which will be capable of withstand-
ing great heat and friction, which will not dry on the surface or shrink
from exposure to the weather, and which will therefore remain intact
and practically of the same diameter on the roller stock as when cast.
Rollers formed of our improved composition will not require washing,
and in fact need not be taken out of the machine.
Our improved composition is formed of glue, glycerine, gum, and
varnish composed of burnt oil and turpentine. The proportions of the
glue and glycerine will depend upon the strength of the glue, say
from 20 to 30 per cent. of glue and from 30 to 50 per eent. of glycerine;
the proportion of the gum should be, say, from 6 to 8 per cent., and the
proportion of the varnish such as will give the composition a conformity
or affinity to printing ink, say from 8 to 12 per cent. The ingredients
are mixed and melted together in the ordinary way.
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 25th March 1870.
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-eighth day of September, in
the year of our Lord One thousand eight hundred and sixty-nine, in
the thirty-third 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, adminis-
trators, 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,

page_text: the improved composition herein-before described for the manufacture of
printing rollers.
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 Tenth day of March One thousand eight hundred and
seventy.
Witness,
J. C. MEWBURN,
Patent Agent,
172, Fleet Street,
London.
ROBT. HARRILD. (L.S.)