Improvements in and connected with Machines for Cleansing Cellulose and the like.
Year: 1897

page_text: Date of Application, 21st Oct., 1897-Accepted, 27th Nov.,
1897
COMPLETE SPECIFICATION.
Improvements in and connected with Machines for Cleansing
Cellulose and the like.
I, CHRISTIAN WANDEL, of Reutlingen, in the Kingdom of Wurttemberg,
German Empire, Manufacturer, 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 relates to machines for cleansing cellulose and the like and has
for its object to hold back knots, lumps and other impurities in the material or
substance under treatment and thus facilitating or accelerating the passage of
said material, also thereby increasing the efficiency of the machine.
In order to make my invention more clear, I refer to the accompanying drawing,
in which similar letters denote similar parts throughout the different views, and
in which:
Figures 1, 2, 4 & 5 show in cross- and longitudinal section my improved
apparatus, whereas Figure 3 represents the apparatus for this purpose hitherto
in use, and shown only, for purposes of comparison.
My improved device consists of a stationary vessel or trough a, inside which a
sifting cylinder or drum is journalled, the inner mantle of which is provided
with spades or suction-blades c, which incline at an angle of 30-40°, to the
radius of the cylinder, said blades being adapted when the cylinder quickly rotates,
to cause the material or substance, under treatment, in a liquid state in the
trough, to be drawn by suction into the sifting cylinder, whereby small chips,
knots or other impurities are held back by means of the said mantle. The
material to be treated is introduced into the trough a, at d, passes into the cylinder,
and is discharged against or into two outlet nozzles, or outlet necks, e, located
upon each side of the trough, said outlets forming a tight joint with regard to
the sides of the trough. From the outlets, e, the material flows in the direction
shown by the arrow in the drawing, into the channel f, from which it passes
out of the machine.
The apparatus hitherto known and in use in the trade for the above mentioned
purpose, has usually been constructed with sifting cylinders of 2-2, 5 m. in length
and with a diameter of 0.7 m. These dimensions, however, do not permit of a
rapid discharge of the cleansed material from the rotating cylinder. The material
under such conditions, becomes obstructed in its passage, which naturally renders
it more difficult for the material to be sucked in by the spades or suction blades,
thereby hindering the proper efficiency of the apparatus. To obviate this disadvan-
tage, I employ in my improved machine, the before-mentioned blades to force the
already cleansed material in the cylinder, towards or against the outlets. The
spades or suction blades, therefore I arrange for this purpose not parallel to
the axis of the cylinder, but in an inclined plane to the same, said arrangement
somewhat resembling a steep screw or spiral.
Figures 4 & 5 show in cross section and in side-elevation two forms of con-
struction of a rotating cylinder or drum with inclined plough-share-like journalled

page_text: shovels or suction-blades, whilst in Figure 3 the cylinders as hitherto in use for
this purpose are shown, said construction illustrated in Figure 3 and as mentioned
in the preamble of this specification. being shown for purposes of comparison
with the construction shown in Figures 4 & 5, which latter constructions 4 & 5
I claim as new. In the side views the cylinder mantles are simply shown in
section to more clearly illustrate the construction of the same.
Figure 4 shows a cylinder or rotating drum in which the shovels e are arranged
and extend from the centre, as hereinbefore described, somewhat in the form of
a steep screw-thread in such manner, that upon being suitably rotated the said
shovels conduct the material towards, and discharge the same at both of the
outlets e, located as above mentioned at the sides of the said cylinder or rotating
drum.
Figure 5 shows a cylinder with an outlet only upon one side, in which con-
struction the various spades or suction blades correspondingly consist of one piece,
extending over the whole length of the inner cylinder mantle.
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:-
An improved machine for cleansing cellulose and the like, characterised by
suction-blades being arranged in an inclined plane to the axis of the cylinder,
and adapted to draw the cellular material or substance under treatment into the
sifting cylinder b, for the purpose of accelerating the discharge of the already
cleansed material from the said cylinder, and by thus increasing the suction of
untreated material into said cylinder to increase the capacity or efficiency of the
machine, substantially as described.
Doted thi 014 1
1007
CHRISTIAN WANDEL,
By Geo. Thos. Hyde,
No. 1, Broad Street Buildings, Liverpool Street, E.C.,
Agent for the Applicant