THE MANUFACTURE OF A NEW INK
Year: 1863

page_text: LETTERS PATENT to Gustav Wilhelm Eduard Friederich, of No. 14, Shap
Street, Kingsland Road, in the County of Middlesex, Professor of
Music, for the Invention of "THE MANUFACTURE OF A NEW INK."
COMPLETE SPECIFICATION filed by the said Gustav Wilhelm Eduard
Friederich at the Office of the Commissioners of Patents, with his Petition
and Declaration, on the 8th June 1863, pursuant to the 9th Section of
the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GUSTAV
WILHELM EDUARD FRIEDERICH, of No. 14, Shap Street, Kingsland Road, in
the County of Middlesex, Professor of Music, send greeting.
WHEREAS I am in possession of an Invention for "THE MANUFACTURE
OF A NEW INK," and have petitioned Her Majesty to grant unto me, my
executors, administrators, and assigns, Her Royal Letters Patent for the same,
and have made solemn declaration that I am the first and true Inventor
thereof.
NOW KNOW YE, that I, the said Gustav Wilhelm Edward Friederich, do
hereby declare that the following Complete Specification, under my hand and
seal, fully describes and ascertains the nature of the said Invention, and in what
manner the same is to be performed, in and by the following statement:-
The object of this Invention is for the purpose of defeating the facilities at
present existing of altering or tampering with legal or other documents. This

page_text: ink at once defies the action of any acid or chemical preparation, so far as
removing it from the surface of the paper or parchment on which it may
be written, and in the event of an attempt to efface the ink the act is at once
palpable by the change of color of the fluid, which would of necessity deter
any malfactor of proceeding, and at the same time publish the intended crime.
It has also the advantage of not corroding on the pen, no matter how long
it may have been left in the ink, and the pen will always be found clean and
free from any incrustation, thus obviating the use of pen wipers. It has also
a further advantage of not forming any sediment in the vessel in which it is
contained, and if the ink be left exposed to the action of the atmosphere it
neither thickens nor forms mildew, as is generally the case in manufactured
inks, but retains its clearness and flows freely from the pen.
The following is the method of manufacturing my ink, say for one gallon:-
Take six quarts of boiling water and while in that state add of logwood two
pounds (avoirdupois weight), and allow it to boil until reduced to one gallon
of liquor; take of bichromate of potash three drachms twelve grains, and ferro-
cyanide of potash one drachm thirty-six grains (troy weight), previously
dissolved in sufficient water, and mix the whole together, then boil up, and
when cool strain carefully through flannel, and the ink is then fit for use.
Having now described the nature of my said Invention, and the manner of
carrying it into effect, I wish it to be particularly understood that I do not
claim the precise (quantities of the) ingredients herein-before set forth, as the
same may be slightly varied; but what I claim is the method of manufacturing
ink as stated in my said Specification.
In witness whereof, I, the said Gustav Wilhelm Eduard Friederich, have
hereunto set my hand and seal, this Fourth day of June, in the year
of our Lord One thousand eight hundred and sixty-three.
Witness,
H. FORRESTER.
G. W. E. FRIEDERICH. (L.S.)