IMPROVEMENTS IN CYLINDER PAPER MACHINES to be as follows:-
Year: 1884

page_text: I, GUSTAV HERMANN MEHNER, of Nossen in the Kingdom of Saxony, German
Empire, do hereby declare the nature of said invention for "IMPROVEMENTS IN
CYLINDER PAPER MACHINES to be as follows:-
"
This invention relates to improvements in machinery for the production of
endless sheets of paper and cardboard. To produce simultaneously two endless
sheets of paper, or one sheet of cardboard I combine two double cylinder machines
with one drying machine, and with single wet presses and with double wet and
finishing prosses, each of the latter consisting of two pairs of rollers placed one
above the other I place a dry felt above the second double cylinder machine to
guide the sheet made on the first cylinder to the double wet press where it is either
pressed in the usual manner, or couched with the sheet produced at the same time
on the second cylinder machine, thus forming a single cardboard. In order to
increase the strength of the cardboard or paper produced I arrango agitators on
both sides of the draining cylinders, each consisting of a number of bars bent
concentric to the cylinder, and fixed to a cross rail which receives a vibrating motion
parallel to the cylinder.

page_text: I, GUSTAV HERMANN MEINER, of Nossen in the Kingdom of Saxony, German
Empire, do hereby declare the nature of my invention for "IMPROVEMENTS IN
CYLINDER PAPER MACHINES" and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement :-
This invention relates to improvements in machinery for the production of
endless sheets of paper and cardboard.
To produce simultaneously two endless sheets of paper or one sheet of cardboard
I combine two double cylinder machines with one drying machine and with singlo
wet presses with double wet and finishing presses, each of the latter consisting of
two pairs of rollers placed one above the other. I place a dry felt above the
second double cylinder machine to guide the sheet made on the first cylinder to the
double wet press, where it is either pressed in the usual manner or couched with
the sheet produced at the same time on the second cylinder machine, thus forming
a single cardboard. In order to increase the strength of the cardboard or paper
produced 1 arrange agitators on both sides of the draining cylinders, each consisting
of a number of bars bent concentric to the cylinder, and fixed to a cross-rail which
receives a vibrating motion parallel to the cylinder.
Referring to the accompanying two sheets of drawings Figs 1 and 2 are respec-
tively elevation and plan of an improved machine according to my invention, and
Figs 3, 4 and 5 represent to. a larger scale the improved agitators.
A and B (Fige 1 and 2) are the two double cylinder machines. C and D the
single wet-presses. E. the double wet press. F the drying machine. G the double
finishing-press. H the batching apparatus.
Each cylinder machine consists of two separate cylinder boxes a, the wet felt b,
the felt washer c, a pair of squeezers d and a number of felt rolls c. Each cylinder
box is furnished with a separate pulp inlet, a draining-cylinder g, a couching
roller and two agitators i, as shown in a larger scale on Figs 3, 4, 5. Above the
second double-cylinder machine a dry felt j runs supported by a number of rolls k
for producing two single sheets of paper. This felt is guided round the bottom
roller of the pair of rolls p of the double wet-press E, whilst the felt is taken
round an auxiliary roller t placed in the frame for this purpose, when card-boards
are produced.
Each wet-press C and D consists of a pair of rollers, whilst the press D is
also furnished with a felt l, a felt-washer m, a pair of squeezers n and a number
of felt-rolls o. The double wet-press E consists of two pair of rollers p and q
placed one above another in the same frame, but working in pairs independently
from each other. The drying machine F is provided with a number, in this case
six, drying-cylinders K, L, M, N, O and P, placed in two rows. Two of them,
marked K and M are furnished with the felt Q, the felt drier R, and the felt rolls?"
whilst the cylinders L and N are also furnished with a felt S, a felt drier T and the
felt rolls s. The double finishing press G is constructed similar to double wet
press E and consists of two pair of rollers and v, each pair working independently
from the other. The drying cylinder O is provided with a felt, W a felt drier V
and the felt rolls w whilst the drying cylinder P is also furnished with a felt W;
a felt drier X and the felt rolls x. For guiding the paper a number of rolls

page_text: marked from y¹ to y" are fixed in the frame of the drying machine, for the samo
purpose two rolls are placed above the wet-press D. The complete paper-making
machine and its auxiliary machinery, viz: pulp chest agitators, pulp-meters, knot-
strainers etcetera are driven by a separate steam engine Z from which power is
transmitted to the different parts by a pair of spur wheels S* the change wheels y*
and a number of pulleys wheels and pinions. On sheet II the cylinder box a with
the agitators i is shown in front and side view and in plan. Each agitator consists
of a number of bars 6' bent concentric to the driving cylinder and fixed to a cross
rail a' which is supported by stuffing boxes bolted to the side plates of the cylinder
box and is connected by a bolt c¹ with the lever d¹. This lever is supported at the
fixed point e¹ and is provided at the opposite end with the pin fl which slides in
a groove forming an endless screw on the cam h¹ keyed to the shaft g'. By this
means the agitators receive a vibratory motion which causes the fibres to become
properly mixed and to be laid on to the draining cylinder, thus producing a better
felted paper of increased strength. The shafts glare driven by the pulleys i¹ and k'.
The machine is worked in the following manner:
The pulp is conducted by the inlets to the different cylinder boxes a of both
cylinder-machines A and B, whero two separate pulp webs are taken off by the
felts and the couching rollers h from the draining cylinders g. The pulp web a
formed by the cylinder machine A is couched again by the wet press C and is
guided to the dry felt j. When two sheets of paper are made this dry felt brings
the web a between the rollers p of the double wet press E where a great quantity
of moisture is taken off thus forming a proper endless sheet of paper which is
guided to the roll y' of the first drying cylinder K.
At the same time the second pulp web ẞ is produced by the second double
cylinder machine B and is couched first by the rollers 2 of the double wet press E
and thence by the single wet press D and is also guided as a proper sheet of paper
to the guide roll y'. Both sheets of paper x and B pass now, one lying above the
other the drying cylinders K, L, M and N successively, each sheet coming twice in
contact with the heated surface of the cylinders. By this operation the two sheets
of paper aro not couched together but remain single and pass singly when leaving
the roller y, a pair of rollers of the finishing press G, thenco over a drying cylinder
to the batching apparatus H. According to this the paper sheet & runs between
the rollers u and over the drying cylinder P whilst the sheet ẞ runs between the
rollers v and over the drying cylinder O.
•
When card-board is produced ly this machine, the roller is fixed in the frame
of the double wet press E and the felt j is guided round this roller t. The web a
carried on by the felt j is taken round the back side of the top roll of the pair of
rollers and couched together with the web ẞ by the rollers q. By this process
a single sheet of card-board is produced which is passed through the wet-press D,
over the drying cylinders K, L, M, N, through a pair of rollers of the finishing press
and thence over one of the last cylinders to the batching apparatus.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:-
1. The use for producing simultaneously two sheets of paper which are dried
one lying above the other, of two cylinder machines, each comprising one or more
draining cylinders in combination with one drying machine and single wet presses
and double wet and finishing presses having two pairs of rollers placed one abovo
another but working independently substantially, as described.
2. The use for producing simultaneously two sheets of pulp which are afterwards
couched together into a single sheet of card board by a pair of rollers, of two
cylinder machines each comprising two or more draining cylinders in combination
with one dry felt for guiding the sheet of pulp made by the first cylinder machine
over the second substantially as described.

page_text: 3. In cylinder machines for making paper and cardboard arranging agitators on
both sides of the cylinder, cach agitator consisting of a number of bars bent
concentric to the cylinder and fixed to a cross sail which receives a vibratory
motion parallel to the cylinder substantially as illustrated and described.
Doted this 23rd day of December 1884.