AN IMPROVED METHOD OF PRINTING
Year: 1866

page_text: LETTERS PATENT to Paul Emile Placet, of Paris, Rue Garanciere,
No. 8, Chemist, for the. Invention of "AN IMPROVED METHOD OF
PRINTING."
Sealed the 14th August 1866, and dated the 16th February 1866.
PROVISIONAL SPECIFICATION left by the said Paul Emile Placet
at the Office of the Commissioners of Patents, with his Petition, on
the 16th February 1866.
I, PAUL EMILE PLACET, of Paris, Rue Garanciere, No. 8, Chemist,
do hereby declare the nature of the said Invention for "AN IMPROVED
METHOD OF PRINTING," to be as follows:-
The object of this Invention is to print, without the aid of a press, all
kinds of designs engraved on any description of surface. The improved
method allows of printing engravings made upon bodies the fragility or
the form of which does not permit of the use of a press. I spread on the
engraved surface with a cloth slightly impregnated with benzine or with
essence of turpentine a little printing ink, and I wipe clean the parts
which ought not to retain the ink; I then run over the surface a coating
of normal collodion; I next apply lightly by hand a sheet of paper coated
with gelatine, albumen, or other agglutinative material. On removing the
paper in a few instants the engraving will be found printed thereon. The
ink may be transparent like that employed ir printing from heliographic

page_text: plates. Instead of ink colored powders may be used, mixed, if necessary,
with a little oil, essence, fat, varnish, or similar material. If the ink is
'formed of enamel powders, by transferring to glass or porcelain I obtain
enamels by firing. Instead of collodion any analogous substance, such as
varnish, caoutchouc, or gutta percha, may be employed; or it may be
dispensed with by using a sheet of paper or support coated with a suitable
adhesive material. The proofs or impressions obtained as above explained
may be transferred to stone, metal, or other substance, either by using
them as in ordinary lithographic work, or as a reserve for the biting or
deposit of metals by a galvanic pile or otherwise. The engravings may be
on metal, wood, glass, porcelain, gelatine, pearl, ivory, or other material,
and their surface may possess any kind of undulations. This process or
method of printing is also applicable to all descriptions of designs formed
with hollows or inequalities. It is particularly applicable to the printing
of lieliographic plates.
BPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Paul Emile Placet in the Great Seal Patent Office
on the 16th August 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, PAUL
EMILE PLACET, of Paris, Rue Garanciere, No. 8, Chemist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Sixteenth day of February, in the year of our Lord
One thousand eight hundred and sixty-six, in the twenty-ninth year of
Her reign, did, for Herself, Her heirs, and successors, give and grant
unto me, the said Paul Emile Placet, Her special licence that I, the
said Paul Emile Placet, my executors, administrators, and assigns,
or such others as I, the said Paul Emile Placet, 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 "AN IMPROVED METHOD
OF PRINTING," upon the condition (amongst others) that I, the said Paul
Emile Placet, 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

page_text: 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 Paul Emile Placet, 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 thereof (that is to say)
The object of this Invention is to print, without the aid of a press, all
kinds of designs engraved on any description of surface. The improved
method allows of printing engravings made upon bodies the fragility or
the form of which does not permit of the use of a press. I spread on the
engraved surface with a cloth slightly impregnated with benzine or with
essence of turpentine a little printing ink, and I wipe clean the parts which
ought not to retain the ink; I then run over the surface a coating of
normal collodion; I next apply lightly by hand a sheet of paper coated
with gelatine, albumen, or other agglutinative material. On removing the
paper in a few instants the engraving will be found printed thereon. The
ink may be transparent like that employed in printing from heliographic
plates. Instead of ink colored powders may be used, mixed, if necessary,
with a little oil, essence, fat, varnish, or similar material. If the ink is
formed of enamel powders, by transferring to glass or porcelain I obtain
enamels by firing. Instead of collodion any analogous substance, such as
varnish, caoutchouc or gutta percha, may be employed; or it may be dis-
pensed with by using a sheet of paper or support coated with a suitable
adhesive material. The proofs or impressions obtained as above explained
may be transferred to stone, metal, or other substance, either by using
them as in ordinary lithographic work, or as a reserve for the biting or
deposit of metals by a galvanic pile or otherwise. The engravings may be
on metal, wood, glass, porcelain, gelatine, pearl, ivory, or other material,
and their surface may possess any kind of undulations. This process or
method of printing is also applicable to all descriptions of designs formed
with hollows or inequalities. It is particularly applicable to the printing of
heliographic plates.
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that I claim,-
First, the method of printing substantially as herein-before described.
Second, the mode of carrying out this method of printing by means of
the substances herein-before enumerated and employed in the manner
described.

page_text: Third, I claim specially the employment of collodion, or, instead thereof,
varnish, caoutchouc, or gutta percha, to cover the design, substantially in
the manner and for the purpose herein-before described.
In witness whereof, I, the said Paul Emile Placet, have hereunto
set my hand and seal, this Tenth day of August, One thousand
eight hundred and sixty-six.
'Witness,
CHS. ARMENGAUD,
Ingénieur Civil,
P. EM. PLACET. (L.S.)
Boulevard de Strasbourg, 23,
à Paris.