Improvements in Rag Engines.
Year: 1895

page_text: Date of Application, 24th Dec., 1895
Complete Specification Left, 10th Sept., 1896-Accepted, 10th Oct., 1896
Improvements in Rag Engines.
We, CHRISTIAN SEYBOLD of Zweibrucken, Palatinate, and WILHELM
SCHMIDT of Lambrecht Palatinate both in the Empire of Germany, Works
Manager and Manufacturer respectively, do hereby declare the nature of this
invention to be as follows:-
This invention has for its object a rag engine for paper mills, and is intended to
effect as rapid and thorough a mixing and effective a disintegration of the material
as possible by conveying the material from both sides to the cutting cylinder which
is placed in the centre of the rag engine trough, said cutting cylinder being mounted
between two longitudinal side walls or partitions in the rag engine trough so that
the latter is divided into two side passages and a central working compartment
which are connected with one another by apertures in the walls at the narrow end
of the trough.
The feeding of the disintegrated material to the knife roller is accelerated by
worm wheels arranged at the aforesaid apertures. A thorough mixing is also
obtained by the material being so fed that it passes from the left hand passage to
the right hand side of the central compartment, and from the right hand passage
to the left hand side of the central compartment.
The invention is shown in the accompanying drawings, in which,
Figure 1 is a longitudinal section of the apparatus; and
Figure 2, a plan view.
In the rag engine A, two partitions B and C are provided, in which the knife
cylinder D is mounted. In these walls at the narrow ends of the trough,
apertures E F are formed so that the three compartments formed in the trough by
the partitions, communicate with one another. In the apertures E F, worm
wheels H are arranged, and are rotated by means of a shaft I.
The mode of working of the above arrangement is as follows:-
The rag pulp or material disintegrated by the knife roller D and the stationary
When the pulp
knives G passes into the channel K formed behind the latter.
accumulates in the channel K its level rises higher than that of the pulp in the
front part of the rag trough and the pulp therefore has a tendency to flow down
towards the latter. The material is thus in constant movement. By the insertion
divided as shown in Figure 2
of the two partitions B and C, the material pulp
into two streams flowing along the channels formed between the walls B and C
and the sides of the rag trough, and arrives in this way at the worm wheels H, by
the action of which it is conveyed with increased speed into the central working
compartment, and, after a thorough mixture effected by this means which becomes
more thorough by the material being passed from the worms to the central passage
(as shown in Figure 2) through pipes (or passages) L' L' running one over the
other and together opening across the whole width of the central working
compartment, thus bringing the material from the left hand outer passage to the
right hand side of the central compartment and from the right hand outer passage
to the left hand side of the central compartment up to the knife cylinder. The
separate particles of material are thereby hindered from always coming in contact
with the same parts of the cylinder.
As by the action of the worm wheels in the front part of the rag engine, a
constant diminution of level is produced, the flow of the rag pulp from the rear

page_text: channel will be a rapid one. The rag pulp will thus circulate more quickly and in
consequence of the double movement will again be finally mixed in a united stream
more thoroughly than has been the case in the rag engines hitherto employed.
Dated this 23rd day of December 1895.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool; Agents for the Applicants.
Improvements in Rag Engines. ·
We, CHRISTIAN SEYBOLD, of Zweibrucken, Palatinate, and WILHELM
SCHMIDT of Lambrecht, Palatinate, both in the Empire of Germany, Works
Manager and Manufacturer respectively, 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:-
This invention has for its object a rag: engine for paper mills, and is intended to
effect as rapid and thorough a mixing and effective a disintegration of the material
as possible by conveying the material from both sides to the cutting cylinder, which
is placed in the centre of the rag engine trough, said cutting cylinder being mounted
between two longitudinal side walls or partitions in the rag engine trough, so that
the latter is divided into. two side passages and a central working compartment
which are connected with one another by apertures in the walls at the narrow end
of the trough.
The feeding of the disintegrated material to the knife roller is accelerated by
worm wheels arranged at the aforesaid apertures. A thorough mixing is also
obtained by the material being so fed that it passes from the left hand passage to
the right hand side of the central compartment, and from the right haud passage
to the left hand side of the central compartment.
The invention is shown in the drawings accompanying the Provisional
Specification, in which
Figure 1 is a longitudinal section of the apparatus; and
Figure 2 a plan view.
In the rag engine A, two partitions B and C are provided in which the knife
cylinder Dis mounted. In these walls at the narrow ends of the trough,
apertures E F are formed so that the three compartments formed in the trough by
the partitions, communicate with one another. In the apertures E F, worm
wheels H are arranged, and are rotated by means of a shaft I.
The mode of working of the above arrangement is as follows:-
The rag pulp or material disintegrated by the knife roller D and the stationary
knives G passes into the channel K formed behind the latter. When the pulp
accumulates in the channel K its level rises higher than that of the pulp in the
front part of the rag trough and the pulp, therefore has a tendency to flow down
towards the latter. The material is thus in constant movement. By the insertion
of the two partitions B and C, the material pulp is, divided as shown in Figure 2
into two streams flowing along the channels formed between the walls B and C
and the sides of the rag trough, and arrives in this way at the worm wheels H, by
the action of which it is conveyed with increased speed into the central working
compartment, and is conducted up, to the knife cylinder after a thorough mixture
effected by this means which becomes more thorough by the material being passed
from the worms to the central passage (as shown in Figure 2) through pipes for
passages) L' L' running one over the other and together opening across the whole
width of the central working compartment, thus bringing the material from the
left hand outer passage to the right hand side of the central compartimeut and

page_text: from the right hand outer passage to the left hand side of the central compartment.
The separate particles of material are thereby hindered from always coming in
contact with the same parts of the cylinder.
As by the action of the worm wheels in the front part of the rag engine, a
constant diminution of level is produced, the flow of the rag pulp from the rear
channel will be a rapid one. The rag pulp will thus circulate more quickly and in
consequence of the double movement will again be finally mixed in a united
stream more thoroughly than has been the case in the rag engines hitherto
employed.
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-
1. The improvement in rag engines for paper mills which consists in carrying
the partitions (B & C) up to the narrow ends of the trough, providing an aperture
in each partition and arranging in each of said apertures a worm wheel, substantially
as hereinbefore described.
2. In a rag engine for paper mills the arrangement of passages leading one over
the other from side channel apertures into a central trough or compartment
substantially as hereinbefore described.
3. The construction and combination of parts taken as a whole forming the
improved rag engine for paper mills, substantially as hereinbefore described and
illustrated.