IMPROVEMENTS IN REPRODUCING
Year: 1882

page_text: LETTERS PATENT to Ludwig Hermann Philippi of the City of Hamburg
Germany Architect for an Invention of IMPROVEMENTS IN REPRODUCING
"
PROVISIONAL SPECIFICATION left by the said Ludwig Hermann Philippi
at the Office of the Commissioners of Patents on the 10th January 1882.
LUDWIG HERMANN PHILIPPI of the City of Hamburg, Germany, Architect
"IMPROVEMENTS IN REPRODUCING ON METAL ENGRAVINGS AND OTHER ONE-
COLOURED PICTURES BY MEANS OF PHOTOGRAPHY"
Heretofore enameled metal plates of art have been produced by engraving
therein the outlines of the design to be shown and filling them afterwards with
enamel, niello etc.
The object of this Invention is to employ photo-engravings or photo reliefs as
patterns for castings of bronze, iron, steel or other hard metal, the depression of
which may be filled with enamel or other convenient material or which may be
used as matrices for stamping sheet-metal.
To carry my Invention into effect, I make in the well known manner a photo-
engraving or photo-relief of the picture or drawing to be reproduced. Then I cast
bronze iron, steel or other convenient metal in moulds made by means of the above
photo-engravings or photo-reliefs as patterns. These castings may be filled directly
with niello, enamel etc. to produce solid metal-plates showing the drawing etc.
either in metal on an enamel-back ground or in enamel on a inetal back-ground
according to the manner of producing the photo-engraving as a positive or negative.
Or such hard castings can be used for stamping in sheet metal the design of the
original picture.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Ludwig Hermann Philippi in the Great Seal Patent Office on the
7th July 1882.
"
LUDWIG HERMANN PHILIPPI of the City of Hamburg Germany Architect
"IMPROVEMENTS
IN REPRODUCING ON METAL ENGRAVINGS AND OTHER ONE
COLORED PICTURES BY MEANS OF PHOTOGRAPHY
Heretofore enamelled metal-plates of art have been produced by engraving
therein the outlines of the design to be shewn and filling them afterwards with
enamel, niello ctc.
The object of my Invention is to employ photo-engravings or photo-reliefs as
patterns for castings of bronze, iron steel or other hard metal, the depressions of
which may be filled with enamel or other convenient material or which may be
used as matrices for stamping sheet metal.
To carry my Invention into effect I make in the well known manner a photo-
engraving or photo-relief of the picture or drawing to be reproduced. Then I cast
bronze, iron steel or other convenient metal in moulds made by means of the above
photo engravings or photo-reliefs as patterns. These castings may be filled directly
with niello, enamel etc. to produce solid metal plates showing the drawing etc. either
in metal on an enamel back ground or in enamel on a metal back ground according
to the manner of producing the photo-engraving as a positive or negative. Or
Buch hard castings can be used for stamping in sheet metal the design of the
original picture.
Having thus fully described my Invention what I desire to claim, and secure by
the herein in part recited Letters Patent is :-
Ist In the reproduction of drawings or pictures on metal the application of
photo-engravings or photo-reliefs as patterns for casting plates of hard metal, the
depressions of which are filled with enamel, niello, or other convenient material,
substantially as described.
2nd The process of producing stamps of hard metal from photo-engravings or
photo-reliefs for stamping sheet metal, substantially as set forth.
In witness whereof I the said Ludwig Hermann Philippi have hereunto set
my hand and seal this Seventh day of July in the year of our Lord One
thousand eight hundred and eighty two.
חחזזזז
זיז ותמה