IMPROVEMENTS IN THE PROCESS OF OBTAINING FATTY MATTERS FROM PRODUCTS ARISING IN THE MANUFACTURE OF GLUE AND OTHER GELATINOUS SUBSTANCES
Year: 1853

page_text: LETTERS PATENT to Alexander McDougall, of Manchester, in the
County of Lancaster, Manufacturing Chemist, for the Invention
of IMPROVEMENTS IN THE PROCESS OF OBTAINING FATTY MATTERS
FROM PRODUCTS ARISING IN THE MANUFACTURE OF GLUE AND OTHER
GELATINOUS SUBSTANCES."
Sealed the 13th April 1854, and dated the 15th October 1853.
PROVISIONAL SPECIFICATION left by the said Alexander McDou-
gall at the Office of the Commissioners of Patents, with his Peti-
tion, on the 15th October 1853.
I, the said ALEXANDER MCDOUGALL, of Manchester, in the County of
Lancaster, Manufacturing Chemist, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN THE PROCESS OF OBTAINING FATTY
MATTERS FROM PRODUCTS ARISING IN THE MANUFACTURE OF GLUE AND OTHER
GELATINOUS SUBSTANCES" to be as follows:-
My Invention has reference to such processes as afford refuse ma-
terial containing fatty matters, but combined with earthy substances,
which are to be removed by the action of acids; and consists in using

page_text: chlorine instead of such acid, or in combining it therewith, for the
purpose of avoiding the nuiscance arising from the decomposition of
animal matter, and from acid vapours. The chlorine may be added in
a free state, but a method I adopt is to form it during the process
by using common salt and peroxide of manganese in combination with
the acid.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Alexander McDougall in the Great Seal Patent
Office on the 15th April 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
ALEXANDER MACDOUGALL, of Manchester, in the County of of Lan-
caster, Manufacturing Chemist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifteenth day of October, in the year
of our Lord One thousand eight, hundred and fifty-three, in the. seven-
teenth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Alexander MacDougall, Her especial
licence, that I, the. said Alexander MacDougall, my executors, ad-
ministrators, and assigns, or such others as I, the said Alexander
MacDougall, 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 In-
vention for "IMPROVEMENTS IN THE PROCESS OF OBTAINING, FATTY MATTERS
FROM PRODUCTS ARISING IN THE MANUFACTURE OF GLUE. AND; OTHER, GELA-
TINOUS SUBSTANCES," upon the condition (amongst others), that I, the said
Alexander MacDougall, by an instrument in writing, under my hand
and seal, 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.

page_text: NOW KNOW YE, that I, the said Alexander MacDougall, do
hereby declare the nature of my said Invention, and in what manner
the same is to be performed, to be particularly described and ascer-
tained in and by the following statement, that is to say:
My Invention has reference to such processes as afford refuse ina-
terial containing fatty matters, but combined with earthy substances,
which are to be removed by the action of acids, and is particularly
applicable to the method of obtaining useful products from the refuse
of the glue manufacture termed "scutch," and for which method
Letters Patent were granted to me on the Fourteenth June, One
thousand eight hundred and forty-seven. The present Invention con-
sists in using chlorine instead of the acid, or in combining it therewith,
for the purpose of avoiding the nuisance arising from the decomposition
of animal matter, and from acid vapours. The chlorine may be added
in a free state, but a method I adopt is to form it during the process
by using common salt and peroxide of manganese in combination with
the acid.
I claim, as secured to me under the above in part recited Letters
Patent, the use of chlorine, either in a free or nascent state, for the
purpose above set forth.
In witness whereof, I, the said Alexander MacDougall, have
hereunto set my hand and seal, this Thirteenth day of April,
in the year of our Lord One thousand eight hundred and fifty-
four.
ALEXANDER MCDOUGALL. (L.S.)