IMPROVEMENTS IN THE TREATMENT OF PAPER, AND IN APPARATUS THEREFOR.
Year: 1880

page_text: LETTERS PATENT to Pierre Hermann Hubert Neuman, of Brussels, in the
Kingdom of Belgium, for an Invention of "IMPROVEMENTS IN THE TREATMENT
OF PAPER, AND IN APPARATUS THEREFOR.'
"
PROVISIONAL SPECIFICATION left by the said Pierre Hermann Hubert
Neuman at the Office of the Commissioners of Patents on the 10th February
1880.
"
PIERRE HERMANN HUBERT NEUMAN, of Brussels, in the Kingdom of Belgium.
"IMPROVEMENTS IN THE TREATMENT OF PAPER, AND IN APPARATUS THEREFOR."
The Invention has for its object the manufacture of strong sheets from paper as a
substitute for leather, india rubber, or other materials, and consists in uniting two
or more sheets of parchment paper before the manufacture of the same is completed,
that is to say, before the sulphuric acid used for its preparation has been washed
out, by passing the said sheets between press rollers, which cause the component
sheets to stick together with the whole of their flat surface, and to form one compact
sheet. The sheet thus formed is then carefully washed with water. Various sorts
of unsized paper may be used for this process, but paper made from cotton or linen
fibre has been found most suitable. The press rollers may be made of caoutchouc
or any other known acid proof material.
The apparatus for treating the paper as above consists of a frame or frames,
made preferably of earthenware, and in said frame are geared several rollers, also
of earthenware, covered with caoutchouc; the rollers may be driven by hand or
machinery, and convenient trays used for carrying the paper and feeding it to and
taking it from the rollers.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Pierre Hermann Hubert Neuman in the Great Seal Patent Office
on the 27th July 1880.
PIERRE HERMANN HUBERT NEUMAN, of Brussels, in the Kingdom of Belgium.
"IMPROVEMENTS IN THE TREATMENT OF PAPER, AND IN APPARATUS THEREFOR.'
"
My Invention consists chiefly in passing several continuous sheets of paper, directly
after leaving the acid bath used for making parchment paper, between rollers of
wood, copper, or other suitable material, covered with india rubber, lead, or other
acid-proof material, which rollers are strongly pressed together so as to unite the
different sheets when they are still in a dextrinous state and to form one homo-
geneous mass without the use of glue or other binding material. After this process,
by which a very thick sheet of parchment is obtained, the corrosive action of the
acid should be arrested. For this purpose the thick sheet, obtained as described,
is passed into a water bath immediately after having left the rollers, which water
bath is frequently renewed for more efficiently arresting the corrosive action of the
sulphuric acid. Finally, the thick parchment obtained as described is shortly
afterwards subjected to a prolonged washing process in which the water is constantly
renewed, and in which the continuous sheet of parchment passes freely through the
water, so that both sides of the said sheet are constantly in contact with the water,
and the remnants of acid enclosed in the body of the sheet are extracted by
endosmose.
The most practical mode of effecting this last washing process is to spread out
the roll of parchment paper freely over a suitably arranged system of rollers, where
it is exposed for several hours to a stream of water, or to place the said rollers with
the paper for the same length of time in a tank, the water of which is constantly
renewed.
The thick parchment paper, obtained as described, is intended for the manufacture
of driving belts, having no seam or joint except where the two ends meet, also for
the manufacture of straps, soles of shoes, and other articles for which thick and
tough parchment paper may be used.
Lough
рар шу
CLAIM.
The process of manufacturing thick parchment paper, substantially as described.
In witness whereof, I, the said Pierre Hermann Hubert Neuman, have hereunto
set my hand and seal, this Twenty fourth day of July, A.D. 1880.
P NEIMAN
(Tα 1