IMPROVEMENTS IN TANNING HIDES AND Materials for THAT PURPOSE
Year: 1880

page_text: LETTERS PATENT to Charles Denton Abel, of No. 28, Southampton Buildings,
"
Chancery Lane, in the County of Middlesex, for an Invention of
IMPROVEMENTS IN TANNING HIDES AND Materials for THAT PURPOSE."
A communication from abroad by Jean Ballatschano, Constantin Ballatschano,
and Heinrich Trenk, all of Berlin, in the German Empire.
PROVISIONAL SPECIFICATION left by the said Charles Denton Abel at
the Office of the Commissioners of Patents on the 5th July 1880.
CHARLES DENTON ABEL, of No. 28, Southampton Buildings, Chancery Lane, in
the County of Middlesex. "IMPROVEMENTS IN TANNING HIDES, AND MATERIALS
FOR THAT PURPOSE." [A communication from abroad by Jean Ballatschano,
Constantin Ballatschano, and Heinrich Trenk, all of Berlin, in the German
Empire.]
This Invention has for its object to effect the tanning of hides in the shortest
possible time, and yet in such a manner that the product shall be equal in quality
to the best leather.
In the Provisional Specification to a previous Patent, dated 20th January 1880.
No. 246, were described certain baths consisting of a compound of chromate of
alumina and pyroligneous acid, and of a compound of argol and certain salts by the
treatment of hides, in which baths they were effectually tanned in a very short
time, and in such a manner that the product is equal in quality to the best
leather.
According to the present Invention other baths are employed for this purpose,
which have practically the same effect as, those previously described.
Thus for one such bath are employed the nitrates, sulphates, or hydrochlorates of
metals combined with lime, that is to say, solutions of the said metallic salts
neutralized or partially so by treatment with carbonate of lime, and dissolved in
pyroligneous acid.
Another bath is prepared as follows:-A quantity of glue is boiled in water and
oxalic acid is added, together with a small quantity of glycerine containing acetate
of alumina in solution. Raw bides are steeped in this solution for some hours until
they have swelled; they are then pressed out somewhat, and are tanned in one or
other of the baths described in the abovementioned Specification; or hides tanned
in one of the said baths and washed are steeped in the just described bath until
they are saturated, after which they are pressed out and are again subjected to the
tanning bath. By this means the leather is rendered much more impervious than
was possible heretofore, so that without boing greased it will perfectly withstand
the action of water.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles Denton Abel in the Great Seal Patent Office on the 3rd
January 1881.
CHARLES DENTON ABEL, of No. 28, Southampton Buildings, Chancery Lane, in
the County of Middlesex. "IMPROVEMENTS IN TANNING HIDES, AND MATERIALS
FOR THAT PURPOSE." A communication from abroad by Jean Ballatschano,
Constantin Ballatschano, and Heinrich Trenk, all of Berlin, in the German
Empire.
This Invention has for its object to effect the tanning of hides in the shortest
possible time, and yet in such a manner that the product shall be equal in quality
to the best leather.
..In the Specification to a previous Patent, dated 20th January 1880, No. 246,
were described certain baths consisting of a compound of chromate of alumina and
pyroligneous acid, and of a compound of argol and certain salts by the treatment of
hides, in which baths they were effectually tanned in a very short time, and in such
a manner that the product is equal in quality to the best leather.
According to the present Invention other baths are employed for this purpose,
which have practically the same effect as those previously described.
Thus for one such bath are employed the nitrates, sulphates, or hydrochlorates of
metals, such as tin, iron, nickel, chromium, or manganese combined with lime, that
is to say, solutions of the said metallic salts neutralized or partially so by treatment
with carbonate of lime, and dissolved in pyroligneous acid.
Another bath is prepared as follows:-A quantity of glue is boiled in water, and
-oxalic acid is added, together with a small quantity of glycerine containing acetate
of alumina in solution. Raw hides-are-steeped in this solution for some hours until
they have swelled; they are then pressed out somewhat, and-are-tanned_in_one_or
other of the baths described in the above mentioned Specification; or hides tanned
in one of the said baths and washed are steeped in the just described bath until
they are saturated, after which they are pressed out and are again subjected to the
tanning bath. By this means the leather is rendered much more impervious than
was possible heretofore, so that without being greased it will perfectly withstand
the action of water.
Having thus described the nature of this Invention and in what manner the
same is to be performed, as communicated to me by my foreign correspondents, I
claim,―
First. The use for tanning hides of a bath composed of the nitrates, or the
sulphates, or the hydrochlorates of metals combined with lime and dissolved in
pyroligneous acid, as herein described.
Second. The use for tanning hides of a bath composed of glue or other analogous
gelatinous substances, combined with oxalic acid or other acid that will not
coagulate the glue, and with glycerine and acetate of alumina, as herein described.
In witness whereof, I, the said Charles Denton Abel, have hereunto set my
hand and seal, this Third day of January, in the year of our Lord One
thousand eight hundred and eighty one.