Year: 1887

page_text: Date of Application, 16th Sept., 1887.
Specification Accepted, 18th Oct., 1887.
I, CARL HERMANN JOHANN FRANZEN of the town of Cologne, Germany, Engineer,
do hereby declare the nature of my said invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
My invention relates to a process and apparatus for treating raw, clarified or
perfectly white sugar masses in loaf forms by means of the centrifugal machine.
Figure 1 is a vertical longitudinal section of my improved apparatus. Figure 2
is a cross section of Figure 1.
The loaf forms F are arranged within the drum or cylinder with their apex radially
directed towards the centre of the centrifugal machine, so that the bottoms of the
forms or of the sugar loaves themselves rest against the wall of the drum of the
centrifugal machine.
In the first case the loaf form must be either entirely filled or a circular sieve
made to enter the form until it comes in contact with the bottom of the loaf.
These said sieves can either be attached to the wall of the drum or loose circular
sieves and thick perforated sheet metal discs L can be loosely laid on the bottom of
the loaf in each form.
In this case the drum is provided with a ribbed stud, or projecting part N in a
radial line to the loaf tips, said part N being of sufficient height that they will come
in contact with the loaf whilst the lower circumference of the form will have no contact
with the same. The round sieve and the perforated sheet metal disc, latter serving
to support the sieve, are laid in the loaf form between the loaf and the stud N.
N must be of such size that it is able to carry the loaf; the perforated sheet metal
disc L is quite loose, the sieve S fits tightly into the loaf form. The loaves are
arranged in one or more rows one above the other or alternately.
Suitable bearings A are attached to the wall and bottom of the drum to serve as
bearing for the form before the centrifugal machine is set in operation. After the
machine has been set in operation each loaf will lay itself against its stud N and is
held by the same whilst the form which has no support radial direction presses itself

page_text: firmly on to the loaf so that all loosening of the same or throwing out of the loaf is
avoided. 0, 0, are openings in the drum for leading off the liquor driven out of the
loaf by the centrifugal action. K K³, are loose rings which form the bearings for the
tips or apexes of the forms and are held by means of wedges.
The spaces R can be employed for admitting heated air to dry the loaves during
the operation of the machine the space between the forms and the loose rings K in
this case being well packed and the shaft provided with suitable stuffing boxes and a
longitudinal boring.
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 and desire
to secure by letters patent is :-
1. The application and employment of centrifugal machines for treating sugar
loaves generally in such manner that the bottom surface of the loaves is laid towards
the wall and the tip or apex towards the centre of the machine substantially as
described in the foregoing specification and shown in the accompanying drawings.
2. The arrangement of the sioves within the loaf forms in such manner that the
sieve lies against the bottom of the loaf and the lower edge of the form is not supported
by the wall of the machine so that the form is pressed on to the loaf by centrifugal
action, said loaf being supported in the said form by means of studs N projecting
from the wall of the machine and into the said form, substantially as described in the
foregoing specification and shown in the accompanying drawings.
3. The application and employment of loose circular sieves or perforated discs or
washers for each loaf form so that the inner circumference of the drum of the
centrifugal machine only carries the studs N whilst the sieve S and stiff washer L are
inserted in the low form, substantially as described in, the foregoing specification and
shown in the accompanying drawings.
4. The application and employment of the shaft of the centrifugal machine for
introducing heated air through the openings in the tips of the forms for drying the
sugar in such manner that the bearings K for the loaf tips form the packing for the
air inlet, the same being provided with air tight clastic rings which lay against the
tips of the loaves whilst the tube from the heating device runs through an appro-
priate stuffing box in the interior spaces R, substantially as described in the foregoing
specification and shown in the accompanying drawing.
Dated this 10th day of September 1881.
C. H. J. FRANZEN.
Per W. H. Beck,
115, Cannon Street, London, E.C.,
Agent.