of IMPROVEMENTS IN THE TREATMENT OF FISH OR OTHER ANIMAL OFFAL FOR PRODUCING ARTIFICIAL GUANO AND OTHER PRODUCTS
Year: 1883

page_text: LETTERS PATENT to Maximilian Zingler of Buckland Crescent Belsize Park
in the County of Middlesex Fellow of the Chemical Society, for an Invention
"
of IMPROVEMENTS IN THE TREATMENT OF FISH OR OTHER ANIMAL OFFAL
FOR PRODUCING ARTIFICIAL GUANO AND OTHER PRODUCTS
"
PROVISIONAL SPECIFICATION left by the said Maximilian Zingler at the
Office of the Commissioners of Patents on the 20th March 1883.
MAXIMILIAN ZINGLER, of Buckland Crescent Belsize Park in the County of
Middlesex, Fellow of the Chemical Society " IMPROVEMENTS IN THE TREATMENT
OF FISH OR OTHER ANIMAL OFFAL FOR PRODUCING ARTIFICIAL GUANO AND OTHER
PRODUCTS."
:
In carrying out my Invention I proceed mainly as follows:-(1) I collect the
offal, which is placed in a tank or other suitable receptacle containing an aqueous
solution of turpentine and a decoction of tannic bark or tannic acid of a certain
strength.
(2.) I then boil the offal down in the above solution until it gets into a soft
pulpy state.
(3) The oil is then pressed out by mechanical or other pressure, and collected
and filtered.
(4) The bones from the fish offal, when separated from the fleshy part, I.boil
down in a solution of turpentine and water until it gelatinises. It is then
coagulated by means of a tannic solution, and boiled out or pressed after being left
for several days in a solution of alum and borax.
(5.) Other animal offal can be treated in the same way.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Maximilian Zingler in the Great Seal Patent Office on the
20th September 1883..
MAXIMILIAN ZINGLER, of Buckland Crescent, Belsize Park in the County of
Middlesex, Fellow of the Chemical Society, "IMPROVEMENTS IN THE TREATMENT
OF FISH OR OTHER ANIMAL OFFAL FOR PRODUCING ARTIFICIAL GUANO AND OTHER
PRODUCTS,"
In carrying out my Invention, I collect the offal; which is placed in a tank or
other suitable receptacle containing an aqueous solution of turpentine and a
decoction of tannic bark or tannic acid of a certain strength I then boil the
offal down in the above solution until it gets into a soft pulpy state.-The oil is
then pressed out by mechanical or other pressure, and collected and filtered―The
bones from the fish offal, when separated from the fleshy part, I boil down in a
solution of turpentine and water until it gelatinises,-It is then coagulated by
means of a tannic solution, and boiled out or pressed, after being left for several
days in a solution of alum and borax-Other animal offal can be treated in the
same way.
In order that my Invention may be clearly understood, I now proceed to describe
more particularly the method of carrying same into effect.
(1.) Before treating the offal as hereafter described, it must be immersed for
several days in a weak solution of alum, ammoniac, and borax, i.e. 1 lb. or more of
each to every ten gallons of water or more
(2). I then add 2 per cent. or more of crude turpentine, and the same amount of
tannic acid, or a strong decoction of tannic bark.
(3) I then boil the mass in a steam jacketted boiler or pan, or over a water bath,
so that it should not burn on the bottom-The boiler ought to be provided with a
stirrer, which may be worked by steam or by manual power
(4.) When the whole mass is boiled down into a thick pulpy state, it is taken
out and placed under a hydraulic or other press, and then left to dry in the open
air, or in hot drying chambers.
(5.) The liquid is collected 'in appropriate vessels, and the oil collected from the
aqueous solution, which is then filtered and stored.
°
(6.) When the bones of the fish offal are separated from the fleshy parts, they
are separately boiled in a solution of water, with 5% or more of crude turpentine,
into a thick jelly; it is then treated with a tannic solution until it coagulates;
the liquid is then drawn off―This liquid can be used for two or three more
operations.
(7.) It is then put in a weak solution of tartar emetic for bleaching purposes.
(8) Then thoroughly washed out, again dissolved, and allowed to dry in pans or
moulds.
Having now particularly described and ascertained the nature of the said
Invention, and in what manner the same is to be performed, I claim as my
Invention the improvements in the treatment of fish or other animal offal for
producing artificial guano and other products, substantially as described.
In Witness whereof I the said Maximilian Zingler have hereunto set my hand
and seal this nineteenth day of September in the year of our Lord one thousand
eight hundred and eighty-three