AN IMPROVED ADHESIVE MIXTURE
Year: 1864

page_text: LETTERS PATENT to James Allan, of Dundee, in the County of Forfar,
North Britain, Machinist, for the Invention of "AN IMPROVED ADHESIVE
MIXTURE."
Sealed the 14th February 1865, and dated the 22nd August 1864.
PROVISIONAL SPECIFICATION left by the said James Allan at the
Office of the Commissioners of Patents, with his Petition, on the
22nd August 1864.
I, JAMES ALLAN, of Dundee, in the County of Forfar, North Britain,
Machinist, do hereby declare the nature of the said Invention of "AN IM-
PROVED ADHESIVE MIXTURE," to be as follows, that is to say:-
This Invention relates to a certain adhesive mixture used for the purpose of
fixing leather; gutta percha, india-rubber, or any other like material on the
surface of cast iron, wrought iron, brass, or any other metal, and consists of a
combination of common glue, ammoniacum, and nitric acid, or any other gum
or acid of similar power and strength. The two first-named ingredients are
placed in a suitable vessel, and properly dissolved by fire or steam heat, and
when commingled by a hand stirrer, or by suitable machinery, the third
ingredient-is-added. This mixture is chiefly intended_to_be_used_for_the
purpose of fixing leather on the outer surfaces of the rollers used in the pre-
paring machinery of jute, wool, flax, cotton, and other similar materials.
The chief advantage resulting from this Invention is, that a mixture is
SUASION elite to any

page_text: hitherto employed, and that although the metals be covered with oil that does
not affect its adhesive powers. The mixture may either be in the liquid or solid
state, and it can be applied with a brush or in any way that common glue is
applied. The proportions of such ingredients which it is preferred to employ
are 112lbs. of common glue, and 7lbs. of nitric acid, to 7lbs. of ammoniacum,
although other proportions may in many instances be advantageously em-
ployed.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James Allan in the Great Seal Patent Office on the
20th February 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
ALLAN, of Dundee, in the County of Forfar, North Britain, Machinist, send
greeting..
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-second day of August in the year of our
Lord One thousand eight hundred and sixty-four, in the twenty-eighth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said James Allan, Her special license that I, the said James
Allan, my executors,. administrators, and assigns, or such others as I, the
said James Allan, my 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 "AN IMPROVED
ADHESIVE MIXTURE," upon the condition (amongst others) that I, the said
James Allan, my executors or administrators, by an instrument in writing
under my hand and seal, or under the hand and seal of one of 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 I, the said James Allan, do hereby declare the
nature of my said Invention, and in what manner the same is to be per=
formed, to be particularly described and ascertained in and by the following
statement, that is to say:
My said Invention relates to a certain adhesive, mixture to be used for the

page_text: purpose of fixing leather, gutta percha, india-rubber, or any other like material
on the surface of cast iron, wrought iron, brass, or any other metal, and con-
sists of a combination of common glue, ammoniacum, and nitric acid, or any
other gum or acid of similar power and strength. The two first named in-
gredients are placed in a suitable vessel and properly dissolved by fire or
steam heat, and when commingled by a hand stirrer or by suitable machinery
the third ingredient is added. This mixture is chiefly intended to be used for
the purpose of fixing leather on the outer surfaces of the rollers used in
the preparing machinery of jute, wool, flax, cotton, and other similar
materials.
The chief advantage resulting from this Invention is, that a mixture is
obtained, the adhesive principle of which is of a much superior quality to any
hitherto employed, and that although the metals be covered with oil, that does
not affect its adhesive powers. The mixture may either be in the liquid or
solid state, and it can be applied with a brush or in any way that common
glue is applied. The proportions of such ingredients which it is preferred to
employ, are (112lbs. of common glue, 7lbs. of nitric acid to 7lbs. of ammonia-
cum,) i.e., one hundred pounds of common glue, and seven pounds of nitric
acid to seven pounds of ammoniacum, although other proportions may in
many instances be advantageously employed.
Having now described the nature of my said Invention, and the manner
in which the same may be carried into practical effect, I would observe in
conclusion, that I do not confine or restrict myself to the precise details
herein-before described, as it may be found advantageous to modify the quan-
tities of the ingredients without deviating from the principle of my Invention;
but what I consider novel and original, and therefore claim as the Invention
secured to me by the herein-before in part recited Letters Patent is, the
combination of substances for producing a new adhesive mixture for the
purposes herein-before described, substantially, or any mere modification
thereof.
In witness whereof, I, the said James Allan, have hereunto set my
hand and seal, this Sixteenth day of February, One thousand eight
JAMES ALLAN. (L.S.)