IMPROVEMENTS NT PRINTING SURFACES CALLED SPONGOGRAFY 44
Year: 1873

page_text: LETTERS PATENT to Julius Friedlaender, of Berlin, in the Kingdom of
Prussia, Doctor of Philosophy, for the Invention of "IMPROVEMENTS
NT
PRINTING SURFACES
CALLED
SPONGOGRAFY
44
PROVISIONAL SPECIFICATION left by the said Julius Friedlaender at
the Office of the Commissioners of Patents, with his Petition, on
the 2nd July 1873.
I, JULIUS FRIEDLAENDER, of Berlin, in the Kingdom of Prussia,
Doctor of Philosophy, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN PRINTING SURFACES CALLED SPONGOGRAPHY," to be as
follows:-
I take a plate or cylinder of any metal or metallic compound, and
deposit upon it, by means of an electric current, a dead surface of tin,
lead, or other metal, or I deposit on such plate or cylinder by chemical.
reduction of a salt, any such metal more electro-negative than the
metallic plate or surface on which the deposit is made. On the surface
so prepared a transfer is made from any freshly printed matter, or an

page_text: original drawing can be made in the usual way with lithographic ink.
The fixing of this matter to be printed from is effected in the usual way.
From that transfer or drawing conies can be taken in a lithographic
original drawing can be made in the usual way with lithographic ink.
The fixing of this matter to be printed from is effected in the usual way.
From that transfer or drawing copies can be taken in a lithographic
press in the ordinary way
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Julius Friedlaender in the Great Seal Patent Office
on the 1st January 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JULIUS
FRIEDLAENDER, of Berlin, in the Kingdom of Prussia, Doctor of Philo-
sophy, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Second day of July, in the year of our Lord One
thousand eight hundred and seventy-three, in the thirty-seventh year of
Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said Julius Friedlaender, Her special licence that I, the said
Julius Friedlaender, my executors, administrators, and assigns, or such
others as I, the said Julius Friedlaender, my 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 "IMPROVEMENTS IN PRINTING SURFACES CALLED
SONGOGRAPHY," upon the condition (amongst others) that I, the said Julius
Friedlaender, executors or administrators, by an instrument in writing
under my, or their, or one of their hands and scals, 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 Scal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
"
.NOW KNOW YE, that I, the said Julius Friedlaender, do hereby declare
the nature of my said Invention and in what mannor the come is to ba

page_text: performed, to be particularly described and ascertained in and by the
following statement:-
I take a plate or cylinder of any metal or metallic compound, and
deposit upon it, by means of an electric current, a dead surface of tin,
lead, copper, or other metal, or I deposit on such plate or cylinder, by
chemical reduction of a salt any such metal more electro-negative than
the metallic plate or surface on which the deposit is made. On the surface
so prepared a transfer is made from any freshly printed matter, or an
original drawing can be made in the usual way with the lithographic,
ink. The fixing of this matter to be printed from is effected in the usual
way, and the print taken in a lithographic or any other convenient
press.
1
I have found tin to be the most suitable deposit, offering the greatest
practical facilities.
The advantage of this Invention is the cheapness, small weight of the
JULIUS FRIEDLAENDER. (L.S.)
Dr. Pholo³.