IMPROVEMENTS IN THE CONSTRUCTION OF ROLLERS FOR EXPRESSING FLUIDS
Year: 1879

page_text: LETTERS PATENT to Gerard Wenzeslaus von Nawrocki, of the Firm of J,
Brandt and G. W. v. Nawrocki, of 124, Leipzigerstrasse, Berlin, Germany,
Engineers and Patent Agents, for the Invention of "IMPROVEMENTS IN THE
CONSTRUCTION OF ROLLERS FOR EXPRESSING FLUIDS." A communication by
Franz Nieper, of Neudeck, by Carlsbad, in Bohemia.
PROVISIONAL SPECIFICATION left by the said Gerard Wenzeslaus von
Nawrocki at the Office of the Commissioners of Patents on the 14th March
1878.
GERARD WENZESLAUS VON NAWROCKI, of the Firm of J. Brandt and G. W. v.
Nawrocki, of 124, Leipsigerstrasse, Berlin, Germany, Engineers and Patent Agents.
"IMPROVEMENTS IN THE CONSTRUCTION OF ROLLERS FOR EXPRESSING FLUIDS." (A
communication by Franz Nieper, of Neudeck, by Carlsbad, in Bohemia.)
Rollers constructed according to this Invention consist of a cast bush fixed on
the roller shaft by key and key way or other known means, and in a combination
of pieces of wood so fitted on the bush as to present end grain on the outer cir-
cumference of the rollers. The bush is formed with a series of projecting rings and
with a disc or flange at each end. Wood wedges are driven in radially all round
between the end flanges, and fitting on and between the projecting rings, and so
that the joints between the wedges in any circular ring composed thereof shall
not be opposite the joints between the wedges in the adjoining ring or rings.
When all the wedges are driven in so as to fill the space between the flanges the
roller is turned in a lathe and is ready for use.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Gerard Wenzeslaus von Nawrocki in the Great Seal Patent Office
on the 13th September 1879.
GERARD WENZESLAUS VON NAWROCKI,, of. the Firm of J. Brandt and G. W. v.
Nawrocki, of 124, Leipzigerstrasse, Berlin, Germany, Engineers and Patent Agents.
"IMPROVEMENTS IN THE CONSTRUCTION OF ROLLERS FOR EXPRESSING FLUIDS."
communication from Franz Nieper, of Neudeck, by Carlsbad, in Bohemia.)
(A
Rollers constructed according to this Invention consist of a cast bush fixed on
the roller shaft by key and key way or other known means, and in a combination
of pieces of wood so fitted on the bush as to present end grain on the outer cir-
cumference of the roller. The bush is formed with a series of projecting rings and
with a disc or flange at each end; wood wedges are driven in radially all round
between the end flanges, and fitting on and between the projecting rings, and so
that the joints between the wedges in any circular ring composed thereof shall
not be opposite the joints between the wedges in the adjoining ring or rings.
When all the wedges are driven in so as to fill the space between the flanges, the
roller is turned in a lathe and is ready for use.
And in order that this Invention may be more fully understood I will now
describe the same with reference to the accompanying Drawing, in which Figure 1
is a side view; Figure 2, a longitudinal part section; and Figure 3, a vertical
cross section of a roller constructed according to this Invention.
A is the cast iron bush keyed on the roller shaft C, and formed with a number
of rings a and with two flanges B, between which the wood wedges b, cut length-
ways of the grain, are driven in so as to present end grain on the circumference, and
so as to break joint as shewn in Figure 1; the roller, having been turned in a lathe,
is ready for work.
The bush A may be fixed on the shaft C in any suitable manner.
The chief advantage of this construction of roller is that it far surpasses rollers
heretofore known in durability, thus doing away with the very inconvenient losses
of time in repairs, and also with the expensive roller covering, such as hemp, rope,
and cotton, and wool silk. This roller answers every purpose without any covering,
expressing any fluid in a more perfect manner than any rollers heretofore known..
And having thus described and ascertained the nature of this Invention, I declare
that I claim,
-
The combination of bush A with rings a and flanges B, and the wood wedges b
forming a roller for expressing fluid, substantially as set forth..
In witness whereof, I, the said Gerard Wenzeslaus von Nawrocki, have here-
unto set my hand and seal, this Thirtieth day of August, in the year of
our Lord One thousand eight hundred and seventy nine.