IMPROVEMENTS IN PRODUCING FIGURES AND DESIGNS UPON PLATES FOR PRINTING FROM." PRODUCING FIGURES AND DESIGNS UPON PLATES FOR PRINTING FROM
Year: 1857

page_text: LETTERS PATENT to Giuseppe Devincenzi, of Maddox Street, in the
County of Middlesex, Gentleman, for the Invention of "IMPROVEMENTS IN
PRODUCING FIGURES AND DESIGNS UPON PLATES FOR PRINTING FROM."
PRODUCING FIGURES AND DESIGNS UPON PLATES FOR PRINTING FROM."
Sealed the 21st August 1857, and dated the 23rd February 1857.
PROVISIONAL SPECIFICATION left by the said Giuseppo Devincenzi, at
the Office of the Commissioners of Patents, with his Petition, on the
23rd February 1857.
1, GIUSEPPE DEVINCENZI, of Maddox Strect, in the County of Middlesex,
Gentleman, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN PRODUCING FIGURES AND DESIGNS UPON PLATES FOR PRINTING FROM," to bo
as follows:-
My Invention relates to obtaining upon metal or stone, figures drawn in a
particular way, or produced by chemical or mechanical processes.
First, I mix lithographic ink or chalk, or some other oily, greasy, resinous,
or bituminous matter, with some liquid, which keeps it or them in suspension,
and for this purpose I sometimes use alcohol or ether. By the employment
of this liquid I obtain upon the surface of the plate either a regular grain, or
some accidental figures or designs, either by simply covering the plate, or by
the aid of brushes or other agents. Then I prepare the plate as it ought to
be employed for lithographic or zincographic printing; but instead of applying
ink, I apply with a roller "some strong varnish, and engrave the plate by
"biting in," either by chemical or electro-chemical action.

page_text: Before preparing the plate I am enabled to draw with lithographic ink or
chalk any desired figure, and when the plate is varnished, any design or figure
can be produced by drawing with a varnish, to which I sometimes add alcohol
or ether, or other liquid, to obtain a granulated effect. I am also enabled to
draw beforehand with lithographic chalk or ink, and then with the liquid apply.
a general or partial grain.
Second, I take a piece of stained or marbled paper, produced in the ordinary
manner in oil colors, and transfer it upon a metallic plate. Instead of oil
colors, any oily or greasy, resinous, or bituminous matter may be employed
to produce the stained or marble paper. When resinous or bituminous
matters are employed, the printing plate may be engraved without farther
preparation; but when oily or greasy matters are used, I prepare the plate in
the manner followed by lithographers before mentioned,-apply the varnish
with a roller, and then engrave by "biting in," either by chemical or electro-
chemical action.
any
Third, instead of varnishing these plates, I sometimes powder them with
some resinous or bituminous substance, and so prepare them for engraving.
Fourth, I mix strong varnish, either with alcohol or with ether, or with
water or other liquids, and by simply covering the plate with such mixture
I obtain very varied figures or designs, the variety or designs of which may be
increased by the employment of mechanical means, as brushes, combs, sponges,
fabrics, and others. Varnish alone can also be employed by a brush or
other agent, or the variety of figures or designs may be increased by mix-
ing or adding different liquids. Upon plates so varnished or covered, and
when dry, figures and designs may be added by varnish; heat may also be
applied to the plate to produce variety. I engrave the. plates. varnished or
figured by any of the means aforesaid by "biting in," either by chemical or
electro-chemical action. An endless variety of stained. fancy papers may bo
produced by the means described.
Fifth, I draw directly upon a metallic plate with a varnish and engrave the
plate by galvanic action.
Sixth, I employ also the means specified in the first, second, third, and
fourth paragraphs to produce similar drawings and figures upon stones, which I
varnish as described, and engrave by chemical action.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Giuseppe Devincenzi, in the Great Seal Patent Office on the
22nd August 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GIUSEPPE
DEVINCENZI, of Maddox Street, in the County of Middlesex, Gentleman, send
greeting.
.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters'
Patent, bearing date tho Twenty-third day of February, in the year of our Lord
One thousand eight hundred and fifty-seven, in the twentieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Giuseppe Devincenzi, Her special licence that I, the said Giuseppe
Devincenzi, my executors; administrators, and assigns, or such others as I,
the said Giuseppe Devincenzi, 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 law-
fully might make, use, exercise, and vend, within the United Kingdom of
Great Britain and Ireland, the Channel Islands, and Isle of Man, an Inven-
tion for "IMPROVEMENTS IN PRODUCING FIGURES AND DESIGNS UPON PLATES'
FOR PRINTING FROM," upon the condition (amongst others) that I, the said
Giuseppe Dovincenzi, my executors or administrators, by an instrument in
writing under my, 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.
NOW KNOW.YE, that I, the said Giuseppo Devincenzi, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
My Invention relates to obtaining upon metal or stone figures drawn in a
particular way, or produced by chemical or mechanical processes.
First, I mix lithographic ink or chalk, or some other oily, greasy, resinous,
or bituminous matter, with some liquid, which keeps it on them in suspension,
and for this purpose I sometimes use alcohol or ether. By the employment of
this liquid I obtain upon the surface of a metallic plate; and moro particularly
use zinc plates, either a regular grain or some accidental figures or designs,
either by simply covering the plate, or by the aid of brushes or other agents.
Then I prepare the plate as it ought to be employed for lithographic or

page_text: zincographic printing; but instead of applying ink, I apply with a roller some
strong varnish, and engrave the plate by "biting in," either by chemical or
electro-chemical action. Before preparing the plate I am enabled to draw
with lithographic ink or chalk any desired figure, and when the plate is
varnished, any design or figure can be produced by drawing with a varnish, to
which I sometimes add alcohol or ether, or other liquid, to obtain a granulated
effect. I am also enabled to draw beforehand with a lithographic chalk or ink,
and then with the liquid apply a general or partial grain.
Second, I take a piece of stained, or marble paper, produced in the ordinary
manner in oil colours, and transfer it upon a metallic plate; instead of oil
colors, any oily or greasy, resinous or bituminous matter may be employed
to produce the stained or marbled paper. When resinous or bituminous
matters are employed the plate may be engraved without any further pre-
paration; but when oily or greasy matters are used, I prepare the plate in the
manner followed by lithographers; before mentioned,-apply the varnish with a
roller, and then engrave by "biting in," either by chemical or electro-
chemical action.
Third, instead of varnishing these plates, I sometimes powder them with
some resinous or bituminous substance, and so prepare them for engraving.
I use this way too in order to produce a regular grain if in the acquitinto
process.
Fourth, I mix some strong varnish, or some resin, pitch, or some such
substance, cither with alcohol or with ether, or with water, or other liquids, and.
by simply covering the plate with such mixture I obtain very varied figures or
designs, the variety of which may be increased by the employment of
mechanical means, as brushes, combs, sponges, fabrics, and others. Varnish
alone can also be employed by a brush or other agents,, or the variety of
figures or designs may be increased by mixing or adding different liquids.:
Upon plates so varnished or covered, and when dry, figuros and designs may
bo added by the varnish; heat may also be applied to the plate to produce
variety. I engrave the plates varnished or figured by any of the means
aforesaid, by "biting in," either by chemical or electro-chemical action. An
endless variety of stained fancy papers may bo produced by the moans
described, and a great variety of tints.
Fifth, I draw directly upon a metallic plate with some varnish and engrave
the plate by galvanic action.
Sixth, I employ also tho means specified in the 1st, 2nd, 3rd, and 4th
paragraphs to produce similar drawings and figures upon stones, which I
varnish as described, and engrave by chemical action.

page_text: When I say "biting in" by chemical action, I mean the ordinary process of
biting in by acid, or dissolution of salts; and when I say "biting in" by
electro-chemical action, I mean the biting in through galvanic action.
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that what I claim as my
Invention is,-
First, to produce either regular grain or plain tints or fancy figures through
chemical or mechanical means upon metallic plates, as described in the first,
second, third, and fourth paragraphs, in order to engrave them in relief by
chemical or electro-chemical action to be used for printing from.
Second, to draw with some varnish upon a metallic plate and to engrave it
in relief through galvanic action for printing from.
Third, to produce plain tints or fancy figures upon stones, by the means
specified in the said first, second, third, and fourth paragraphs, to engrave them,
through the action of the acid, in order to print from.
In witness whereof, I, the said Giuseppe Devincenzi, have hereunto
set my hand and seal, this Twenty-second day of August, in the year
of our Lord One thousand eight hundred and fifty-seven.
CUUSEPPE DEVINCENZI
GIUSEPPE DEVINCENZI, (5.)