AN IMPROVED COMPOSITION FOR THE MANUFACTURE OF PRINTERS' ROLLERS
Year: 1865

page_text: LETTERS PATENT to Frederic Germain David, of Paris, in the Empire
of France, but temporarily residing at Fetter Lane, in the City of London,
Merchant, for the Invention of "AN IMPROVED COMPOSITION FOR THE
MANUFACTURE OF PRINTERS' ROLLERS."
PROVISIONAL SPECIFICATION left by the said Frederic Germain David
at the Office of the Commissioners of Patents, with his Petition, on the
24th June 1865.
I, FREDERICK GERMAIN DAVID, of Paris, in the Empire of France, but tem-
porarily residing at Fetter Lane, in the City of London, Merchant, do hereby
declare the nature of the said Invention for "AN IMPROVED COMPOSITION FOR
THE MANUFACTURE OF PRINTERS' ROLLERS," to be as follows, that is to say :-
Until now the rollers employed for typographic and other purposes have
been composed of paste made with treacle, and give very unsatisfactory
results. During the summer heat they warp and soon become shapeless,
whilst in the winter they become hardened to such an extent as to continually
require repairing.
My Invention relates to the manufacture of rollers by which the above
defects are obviated, and consists in preparing typographic and other rollers.

page_text: for printing of a composition or paste made of about 33 per cent. of glue, 20
per cent. of honey, 24 per cent. of syrup of glucose, and 20 per cent. of
kneaded glucose; but these relative proportions vary according to the seasons
in which the rollers are to be employed.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Frederic Germain David in the Great Seal Patent Office.
on the 23rd December 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FREDERIC
GERMAIN DAVID, of Paris, in the Empire of France, but temporarily residing
at Fetter Lane, in the City of London, Merchant, send greeting.
ני
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fourth day of June, in the year of our Lord
One thousand eight hundred and sixty-five, in the twenty-ninth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto.
me, the said Frederic Germain David, Her special licence that I, the said
Frederic Germain David, my executors, administrators, and assigns, or
such others as I, the said Frederic Germain David, my executors, admi-
nistrators, 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 IMPROVED COMPOSITION FOR THE MANUFACTURE OF
PRINTERS' ROLLERS," upon the condition (amongst others) that I, the said
Frederic Germain David, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should parti-
cularly 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 Frederic Germain David, do hereby
declare the nature of my 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:-
Until now the rollers employed for typography are composed of paste made
with treacle and glue, and give very unsatisfactory results. During the
summer heat the rollers thus made become torn and lose their shape, whilst

page_text: in the winter they become hard to such a degree as to continually require
repairing and remaking.
My Invention has for object to obviate these defects, and consists in the
employment of the materials herein-after enumerated for the production of an
improved composition or paste for the manufacture of typographic and other
printing rollers. The said composition or paste is made of about 33 per cent.
by weight of glue, 20 per cent. of honey, 24 per cent. of syrup of glucose, and
20 per cent. of kneaded glucose; but these relative proportions vary according
to the season in which the rollers are made. The glue is soaked by immersion
in cold water until it becomes supple; this being done I cause it to melt in
a sand bath until it is reduced to a homogeneous state; I then pour the honey
and the glucose into it, and agitate the whole until the paste has become
liquid and free from lumps. I pass the mixture through a sieve, and it is then
run into the moulds in the ordinary manner. As the heat in summer tends
to dilate the paste I reduce the quantity of syrup and honey one-third, and
even more if the heat be great.
And having thus described the nature of my Invention, and the manner of
putting the same into effect, I wish it to be understood that I do not confine
myself to the precise details of proportions or mode of operating, but what
I claim is the employment of the herein-before stated materials to form a
paste or composition for the manufacture of typographic and other rollers for
printing, as herein-before described.
In witness whereof, I, the said Frederic Germain David, have hereunto
set my hand and seal, this Twenty-third day of December, in the year
of our Lord One thousand eight hundred and sixty-five.
Witness,
W. A. GILBER.
FREDERIC G. DAVID. (L.B.)