Improvements in Printing Plates.
Year: 1892

page_text: Date of Application, 29th Nov., 1892-Accepted, 14th Jan., 1893
COMPLETE SPECIFICATION.
Improvements in Printing Plates.
I FRANKLIN FERDINAND HAGGENMULLER, of 49 Barclay Street, New York,
in the County and State of New York, United States of America, Lithographer
do hereby declare the nature of this invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
The object of the invention is to provide a new and improved printing plate
which is chiefly intended to take the place of the lithographic stone now generally
used, the said plate being very cheaply manufactured and provided with a stipple
ready for the artist to work on.
The invention consists of a plate provided with an embossed printing stipple.
Reference is to be had to the accompanying drawings forming a part of this
Specification, in which similar letters of reference indicate corresponding parts in
all the figures.
Figure 1 is a plan view of the improvement;
Figure 2 is an enlarged plan view of part of the same; and
Figure 3 is a sectional side elevation of the same on the line 3-3 of Figure 2.
The improved printing plate is made of zinc, type metal, aluminium or other
metal, or it can be made of celluloid gelatine, glass and other substances. The
plate is made of suitable thickness and is subjected to an embossing process so as
to form on one side of the plate a printing stipple ready for the artist to work on.
This printing stipple is uniform and can be readily worked on with the lithographic
crayon to produce the desired picture.
As shown in the drawings, the plate A, is formed on one side with a stipple B,
made of spherical points, but I do not limit myself to the particular shape of the
points forming the stipple. It is understood that the material of which the plate
is formed must be of such a nature that it can be printed from, drawn on, or photo-
graphed upon as required for ordinary printing, and subjected to acids and other
substances used in preparing the plate in a manner similar to that of the litho-
graphic stone after the picture is formed, so as to get the plate ready for printing.
It is further understood that a plate embossed in such a manner as to form a
lithographic stipple, prepares the plate ready for the artist to drawn on without
the tedious process of stipling dot by dot on the stone, as heretofore practised.
It will be seen that a plate produced in this cheap and effective manner can
readily be substituted for the zinc plates or expensive stones now generally used in
the art of lithography.
It is further understood that after the pictures have been printed from the
plate, the latter can be melted up and again formed into plates and embossed so as
to form a stipple in the manner above described. Thus, the same material can be
used over and over again for forming lithographic plates of the nature described.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is,
The improved plate for use in practical printing, the same having an embossed
stippled surface, as shown and described.
Dated this 20th day of November 1909
F. F. HAGGEN MULLER,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.