Improvements relating to Slabs of Roller Composition for Printing Purposes.
Year: 1896

page_text: Date of Application, 19th Dec., 1896-Accepted, 13th Feb., 1897
COMPLETE SPECIFICATION.
Improvements relating to Slabs of Roller Composition for Printing
Purposes.
We, PAUL MORITZ BERGER, ROBERT CARL GUSTAV VICTOR WALDBAUR, and
FRIEDRICH EMIL WORLITZER, of the Firm of Berger & Wirth, Merchants, of Leipzig-
Schönefeld, in the Kingdom of Saxony, 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 present invention consists in an alteration of the form of the slabs of roller
composition, such as is used for the casting of printers' rollers.
These slabs have hitherto been made in the form of an oblong cake of uniform
thickness throughout, and, when melting them down, considerable time and labour
were necessary to break them up into small portions. The object of the present
invention is to obviate these disadvantages by forming at one or both sides of the
slab of roller composition a series of depressions or grooves, so that when it is
required to break up the slab to melt it down, it may be easily broken into a number
of uniform parts.
In order to render the present specification more easily intelligible, we refer to the
accompanying drawing, in which similar letters of reference denote similar parts
throughout the several views.
Fig. 1 is a general view of a slab of roller composition as hitherto made.
Fig. 2 is a sectional drawing of Fig. 1.
Fig. 3 is a general view of a slab of roller composition cast according to the present
invention.
Fig. 4 is a sectional drawing of Fig. 3.
Fig. 5 is a general view of another (modified) form of the invention.
Fig. 6 is a sectional drawing of Fig. 5.
The slabs of roller composition, which have hitherto been made as shown in Figs. 1
and 2, are, according to the present invention, provided with a series of depressions
or grooves, as shown in Figs. 3 to 6, being so arranged as to produce on one or both.
sides of the slabs, a series of elevated squares, or rectangular, or diamond, or any
other shaped parts, and being depressed into the composition, of which the slab is
made, far enough to allow but a thin sheet of the composition only to remain intact,
as shown at b.
As shown in Figs. 5 and 6, the corners of the elevated portion c may be rounded
off. It is equally clear, that the depressions or grooves may be so arranged, as to
form any kind of similarly shaped elevated portions. The main object of the present
invention is to enable the slabs of composition to be easily broken up into a number
of equally large, or approximately equally large, pieces, without the least trouble for
the purpose of melting down the composition.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
A slab of roller composition having thereon a series of depressions or grooves at
one or both sides of the same, said depressions being so arranged as to form a series

page_text: only so much of the said slab intact as to render it possible to break up the slab of
composition without trouble in the manner and for the purpose substantially as
described.
Dated this 19th day of December 1896
FAIRFAX & WETTER,
433, Strand, London, Agents.