IMPROVEMENTS IN THE METHOD OF PREPARING AND USING TANNING AND PRESERVING SUBSTANCES to be as follows:
Year: 1884

page_text: I FRANK WIRTH of the firm of Wirth and Company, Patent Solicitors at
Frankfort on the Main in the Empire of Germany do hereby declare the nature of
said invention for "IMPROVEMENTS IN THE METHOD OF PREPARING AND USING
TANNING AND PRESERVING SUBSTANCES to be as follows:-
"
This invention relates to the method or process of preparing and using tanning
and preserving substances with moss peat.
In order to better utilize the materials used for tanning the hides of animals,
such as extracts from well known woods or shrubs and mineral substances rich in
tannin, I make use of moss peat of a clear and light nature with which I mix the
above mentioned extract or dried tanning, substances.
It is preferable that the mixture thus prepared and suitably concentrated should
be in the form of small bricks and properly dried so as to be in a convenient form.
for transport and storing purposes. To this end I mix 100 parts of light, moist
moss peat with from 50 to 100 parts of dried pulverized tanning substances or
extracts thereof and form the mass into small bricks which I place in hot chambers
or in a dry atmosphere upon shelves made of laths arranged in rows and forming a
structure of the same kind as those used in the manufacture of fire bricks; these
small bricks being left upon the said shelves until completely desiccated. When,
instead of operating with dried pulverized tannates it is desired to operate with
liquid extracts the moss peat used should be previously thoroughly desiccated so
that when the materials are mixed the resulting mixture should not be too moist
thereby rendering the compressing operation very difficult.
In order to be able to use mineral tanning substances in the treatment of the
hides of animals, in the same manner as with ground oak bark I mix, previous to
placing the said hides in suitable pits, a sufficient quantity of moss peat with the
mineral substances selected and previously prepared without any admixture of
moss peat, such as alum, common salt or chromate of potash, and I spread the
mixture upon each hide.

page_text: COMPLETE SPECIFICATION.
I, FRANK WIRTH, of the firm of Wirth and Company, Patent Solicitors, at
Frankfort-on-the Main, in the Empire of Germany do hereby declare the nature
of my invention for "IMPROVEMENTS IN THE METHOD OF PREPARING AND USING
TANNING AND PRESERVING SUBSTANCES and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
"
This invention relates to the method or process of preparing and using tanning
and preserving substances.
In order to better utilize the materials used for tanning the hides of animals,
such as extracts from well known woods, shrubs or other vegetable substances or
mineral substances rich in tannin, I make use of moss peat of a clear and light
nature with which I mix said extracts or tanning substances.
It is preferable that the mixture thus prepared and suitably concentrated should
be in the form of bricks or blocks and properly dried so as to be adapted for
transport and storing purposes. To this end I mix 100 parts of light, moist moss
peat with from 50 to 100 parts of dried pulverized tanning substances, or extracts
thereof and form the mass into bricks or blocks which I place in a hot chamber or
in a dry atmosphere upon shelves made of laths and forming a structure of the
same kind as those used in the manufacture of fire-bricks; the said bricks or
blocks being left upon the shelves until completely desiccated. When, instead of
operating with dried pulverized tanning substances, it is desired to operate with
liquid extracts, the moss peat used should be previously thoroughly desiccated so
that when mixed with the extract solutions there is not too much moisture in the
mixture, which renders the compressing operation very difficult. In order to be
able to use mineral tanning substances, in the treatment of the hides of animals in
the same manier as ground oak bark, I mix, previous to placing the said hides in
the pits, a sufficient quantity of moss peat with the mineral substances selected and
previously applied with a substance such as alum, common salt, chromate of potash,
or the like, and I spread this mixture between the several hides. The hides being
thoroughly tanned, they are prepared in the same manner as hides treated by other
methods.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
First. The process of preparing tanning and preserving substances which consists
in mixing moss peat with extracts of substances containing tannin, or with finely
pulverized vegetable matters containing tannin.
Second. The process of manufacturing bricks or blocks from moss peat and
tannin substances.
Third. The process of tanning by the employment of moss peat in connection
with mineral tanning substances.
Dated this 20th day of October 1884.