AN IMPROVED BLACK PRINTING INK CAPABLE OF BEING REMOVED FROM PAPER
Year: 1869

page_text: LETTERS PATENT to Jules Kircher, of Cannstadt, Chemist, and Emile
Ebner, of Stuttgard, Printer, both of Wurtemberg, for the Invention
of "AN IMPROVED BLACK PRINTING INK CAPABLE OF BEING REMOVED FROM
PAPER."
Sealed the 1st April 1870, and dated the 5th October 1869.
PROVISIONAL SPECIFICATION left by the said Jules Kircher and
Emile Ebner at the Office of the Commissioners of Patents, with
their Petition, on the 5th October 1869.
We, JULES KIRCHER, of Cannstadt, Chemist, and EMILE EBNER; of
Stuttgard, Printer, both of Wurtemberg, do hereby declare the nature
of the said Invention for "AN IMPROVED BLACK PRINTING INK CAPABLE OF
BEING REMOVED FROM PAPER," to be as follows:-
This Invention has for its object the production of a rich black
printing ink capable of being readily removed from paper.
The following description of the mode of manufacture will clearly
elucidate the modus operandi, which consists in dissolving iron in either
sulphuric, muriatic, nitric, acetic, malic, or oxalic acid; part of the
liquid is oxidized with nitric acid, and the oxyd is precipitated with

page_text: soda, potash, lime, or magnesia. The precipitate should be carefully
washed and then dyed with tannic and gallic acid in equal parts, or
simply with a solution of gallic acid, till a deep brown shade like sepia
is produced, or by increasing the dose of tannic and gallic acid the deep
blue black colour is produced. The precipitate is then carefully washed
and dried, and finally mixed with linseed oil varnish; it is then in a
condition for immediate use for letter-press printing, engraving on
copper, wood or steel engraving, and for lithographic printing.
*SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Jules Kircher and Emile Ebner in the Great
Seal Patent Office on the 4th April 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JULES
KIRCHER, of Cannstadt, Chemist, and EMILE EBNER, of Stuttgard,
Printer, both of Wurtemburg, send greeting.
'WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifth day of October, in the year of
our Lord One thousand eight hundred and sixty-nine, in the thirty-
third year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said Jules Kircher and Emile Ebner, Her
special licence that we, the said Jules Kircher and Emile Ebner, our
executors, administrators, and assigns, or such others as we, the said
Jules Kircher and Emile Ebner, our 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 IMPROVED BLACK PRINTING INK
CAPABLE OF BEING REMOVED FROM PAPER," upon the condition (amongst
others) that we, the said Jules Kircher and Emile Ebner, our exe-
cutors or administrators, by an instrument in writing under our, 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.

page_text: NOW KNOW YE, that we, the said Jules Kircher and Emile.
Ebner, do hereby declare the nature of our said Invention, and in what
manner the same is to be performed, to be particularly described and
ascertained in and by the following statement, that is to say :-
This Invention has for its object the production of a rich black
printing ink capable of being readily removed from paper.
The following description of the mode of manufacture will clearly
elucidate the modus operandi, which consists in dissolving iron in either
sulphuric, muriatic, nitric, malic, or oxalic acid; part of the liquid is
oxidized with nitric acid, and the oxyd is precipitated with soda, potash,
lime, or magnesia. The precipitate should be carefully washed and then
dyed with tannic and gallic acid in equal parts, or simply with a solution
of gallic acid, till a deep brown shade like sepia is produced, or by
increasing the dose of tannic and gallic acid the deep blue or pure black
colour is produced. The precipitate is then carefully washed and dried,
and finally mixed with linseed oil varnish; it is then in a condition for
immediate use for letter-press printing, engraving on copper, wood, or
steel, and for lithographic printing.
The principal feature of novelty in the Invention consists therefore in
the production of a rich black printing ink, which is readily removed
from paper by a simple process for which we have secured Letters Patent
under the No. 2891, dated the 5th October 1869.
Having thus described our Invention, and the mode of carrying out
the same, what we claim and desire to secure by Letters Patent is, the
mode of manufacturing printing ink by the means and for the purpose
herein mentioned.
In witness whereof, we, the said Jules Kircher and Emile Ebner,
have hereunto set our hands and seals, this Twenty-ninth day of
March, in the year of our Lord One thousand eight hundred and
seventy.
S. HÉBRÉ,
32, Boulevart Sébastopol.
JULIUS KIRCHER. (L.S.)
EMIL EBNER.
(L.S.)