IMPROVEMENTS IN THE PREPARATION OF PHOTOGRAPHIC PLATES FOR SUBSEQUENT TYPOGRAPHIC OR OTHER MULTIPLE REPRODUCTION OF LIVING A
Year: 1882

page_text: LETTERS PATENT to Frank Wirth of the firm of Wirth and Company
Patent Solicitors, at Frankfort-on-the-Main, in the Empire of Germany
for an invention of IMPROVEMENTS IN THE PREPARATION OF PHOTOGRAPHIC PLATES
FOR SUBSEQUENT TYPOGRAPHIC OR OTHER MULTIPLE REPRODUCTION OF LIVING
A communication from George Meisenbach, of Munich,
OR DEAD OBJECTS.
in the Empire of Germany.
PROVISIONAL SPECIFICATION left by the said Frank Wirth at the Office
of the Commissioners of Patents on the 8th May 1882.
FRANK WIRTH of the firm of Wirth and Company, Patent Solicitors, at
Frankfort on the Main, in the Empire of Germany IMPROVEMENTS IN THE
PREPARATION OF PILOTOGRAPIIIC PLATES FOR SUBSEQUENT TYPOGRAPHIC OR OTHER
A communication from
MULTIPLE REPRODUCTION OF LIVING OR DEAD OBJECTS."
George Meisenbach, of Munich in the Empire of Germany.
This invention consists of a novel method by which any any object, dead or
living, can be delineated direct by photographic means with stippled or hatched
shading, without having to first make a drawing; and such delineation can be
multiplied by printing, or engraved as a plate for the reproduction of copies.
In order to produce a typographic block the method to be employed is as
follows;
A transparent plate is hatched or stippled in parallel lines.
A transparent positive is made of the object.
The two plates are joined, preferably face to face.
From the combined plates a definite negative is photographed in the ordinary
manner.
In order to cross-hatch and break the lines of the shading, the hatched or
stippled plate may be shifted once or more during the production of the said
definite negative.
This negative is transferred in the usual manner on to a plate of suitable
material, which is graved or etched in the usual manner to form a typographic

page_text: block. For the engraving plates the negative is transformed into a positive, and
the latter is transferred on to the etching plate in the usual manner.
The negative produced from the combined plate may also be used for the
production of photographs or photo-lithographic plates.
Both the object and the hatching or stippling may be produced photographic-
ally on one and the same plate, in place of using two separate plates, and this
plate used direct for the production of an engraved plate. On the other hand
when typographic blocks, photographic or photolithographic plates, and the like
are required, a negative must be made for transfer. To obtain cross hatched or
broken shading its original may be moved during photography.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Frank Wirth in the Great Seal Patent Office on the 8th November
1882.
FRANK WIRTII of the firm of Wirth and Company, Patent Solicitors at
Frankfort-on-the-Main, in the Empire of Germany, IMPROVEMENTS IN THE
PREPARATION OF PHOTOGRAPHIC PLATES FOR SUBSEQUENT TYPOGRAPHIC OR OTHER
A communication from
MULTIPLE REPRODUCTION OF LIVING OR DEAD OBJECTS
George feisenbach, of Munich, in the Empire of Germany.
This invention consists of a novel method by which any object, dead or living,
can be delineated direct by photographic means with stippled or hatched shading,
without having to first make a drawing, and such delineation can be multiplied
by printing, or engraved as a plate for the reproduction of copies.
In order to produce a typographic block the method to be employed is as
follows:
A transparent plate is hatched or stippled in parallel lines.
A transparent positive is made of the object.
The two plates are joined, preferably face to face.
From the combined plates à definite negative is photographed in the ordinary
manner.
In order to cross-hatch and break the lines of the shading for obtaining a more
plastic appearance of the printings made from the typographic or other block,
the hatched or stippled plate is shifted or moved once more during the
production of the said definite negative.
or
This negative is transferred in the usual manner on to a plate of suitable
material, which is graved or etched in the usual manner to form a typographic
block. For the engraving plates the negative is transformed into a positive, and
the latter is transferred on to the etching plate in the usual manner.
The Negative produced from the combined plate may also be used for the
production of photographs or photo-lithographic plates.
Both the object and the hatching or stippling may be produced photographic-
ally on one and the same plate, in place of using two separate plates, and this
plate used direct for the production of an engraved plate. On the other hand
when typographic blocks, photographic or photolithographic plates, and the like
are required, a negative must be made for transfer. To obtain cross-hatched or
broken shading its original may be moved during photography.
Having thus described the nature of my invention and the manner in which
the same is to be carried out in practice I wish it to be understood that I do
not claim broadly the manufacture of typographic or other blocks by means of
photographic plates nor do I claim the use of a transparent plate with hatched
lines in such manufacture, but what I claim and wish to secure by letters
patent is:-
The one or more times exerted moving or shifting of the hatched plate on the
photographic negative or positive plate during the production of the definito
negative or positive from which afterwards the typographic or other printing
block is made as and for the purposes set forth.
In witness whereof I, the said Frank Wirth, have hereunto set my hand and
seal this fourth day of October in the year of our Lord One thousand
FRANK WIRTH. (L.S.)