AN IMPROVEMENT IN THE MANUFACTURE OF ROSIN Отт.
Year: 1856

page_text: LETTERS PATENT to George Fergusson Wilson, of Belmont, Vauxhall,
for the Invention of "AN IMPROVEMENT IN THE MANUFACTURE OF ROSIN
Отт.."
Sealed the 24th December 1856, and dated the 7th October 1856.
PROVISIONAL SPECIFICATION left by the said George Fergusson Wilson
at the Office of the Commissioners of Patents, with his Petition, on the
7th October 1856.
I, GEORGE FERGUSSON WILSON, of Belmont, Vauxhall, do hereby declare
the nature of the Invention for "AN IMPROVEMENT. IN THE MANUFACTURE OF.
ROSIN OIL," to be as follows:-
My Invention consists of employing in the manufacture of rosin oil, rosin
which has been distilled with the air excluded (by preference in an atmo-
sphere of steam) in place of common rosin.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Fergusson Wilson in the Great Seal Patent Office
on the 3rd April 1857.
TENT PRESINTS <-
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
FERGUSSON WILSON, of Belmont, Vauxhall, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventh day of October, in the year of our Lord
One thousand eight-hundred and fifty-six, in the twentieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said George Fergusson Wilson, Her special licence that I, tlie said George
Fergusson Wilson, my executors, administrators, and assigns, or such others
as I, the said George Fergusson Wilson, my 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 ROSIN OIL," upon the-condition
(amongst others) that I, the said George Fergusson Wilson,.my executors or
administrators, by an instrument in writing under my, or their, or one of
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 I, the said George Fergusson Wilson, do hereby
declare the nature of the said Invention, and in what manner the same is to
performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say:-
...My Invention. consists of employing in, the manufacture of rosin-oil, rosin
which has been distilled with the air excluded (by preference in an atmosphere
of steam) in place of common rosin.
a.
. Having thus stated the nature of my said Invention, I will proceed more
fully to describe the manner of performing the same.
Heretofore in manufacturing rosin oil it has been usual to employ the rosin
in a more or less crude state, by which the oil obtained therefrom has been
more or less impure. Now, this Invention consists, as above stated, in first
subjecting the resin to a process of "distillation, with the atmosphere being
excluded, and then to apply the rosin so obtained in the manufacture of rosin
oil, by which very pure rosin oil is obtained. I would state that it is not new

page_text: to subject rosin to a process of distillation when the air is excluded, such
process having been secured to me under former Letters Patent, and therefore
no claim is separately made thereto. In distilling rosin with the atmosphere
excluded, I prefer to use a still having a fire under, and I find it desirable
that the medium acting on the external surfaces of the condensor should be
kept by steam or otherwise to a temperature about or little below 300° of
Fahrenheit, except at the end, when the condensed rosin is drawn off, when
the heat of the condensor is lowered to that of boiling water. The best means
I am acquainted with for distilling rosin and for keeping out the atmosphere
from the still is by superheated steam, by which I maintain a temperature
in the still of about 560° to 620° of Fahrenheit. The rosin having been
obtained from common rosin by a process of distillation with the atmosphere
excluded is then to be employed and distilled in the ordinary well-known
manner to produce rosin oil therefrom, by which a far better quality of rosin
oil will be manufactured than when the oil is made direct from common rosin.
In witness whereof, I, the said George Fergusson Wilson, have hereunto
set my hand and seal, this Second day of April, in the year of our
Lord One thousand eight hundred and fifty-seven.
Witness,
JNO. ALCOCK.
GEO. F. WILSON. (L.S.)