IMPROVEMENTS IN CENTRIFUGAL 'MACHINES OR HYDRO-EXTRACTORS
Year: 1874

page_text: PROVISIONAL SPECIFICATION left by Hugo Müller at the Office
of the Commissioners of Patents, with his Petition, on the 11th
.August 1874.
I, HUGO MÜLLER, of Dusseldorf, Rhenish Prussia, do hereby declaro
the nature of the said Invention for "IMPROVEMENTS IN CENTRIFUGAL
'MACHINES OR HYDRO-EXTRACTORS," to be as follows:
-
•
The object of my Invention is to enable hydro-extractors or centrifugal
machines to be worked without intermission in order to save the time
hitherto consumed in stopping the machines for the purpose of removing
the matters which have been subjected to the centrifugal action and
charging the machines afresh. To this end my Invention consists in
a means of removing the sugar or other matter treated às fast as it is
dried and without stopping the machine, so that the operation goes on
continuously, whereby a great saving of time is effected not only from
the avoidance of frequent stoppages but also by reason of the greater
facility with which the liquid escapes through the perforations or
meshes of the basket which are not obstructed by so thick a layer of the
sugar or other matter treated as when the former intermittent modę
of working is followed,

page_text: According to my Invention I place within the centrifugal basket a
vertical cylinder reaching nearly to the bottom of the basket, where a
small opening is left for the matters to pass under. A spiral or screw
blade is constructed upon the outside of this cylinder so as to occupy the
annular space between the cylinder and the sides of the basket which it
nearly touches so as to scrape off the layer of sugar or other matter
therefrom. The basket is mounted on a vertical shaft as usual, whilst
the cylinder and screw are carried upon a hollow shaft through which
the basket shaft passes; or this arrangement might be reversed under
certain circumstances.
The two shafts are driven at different speeds, and the one is provided
with an expanding pulley in order that the relative speeds of the basket and
screw may be varied at will. The scrow cylinder is attached to its shaft so
that the whole may be readily raised out of the basket for cleaning the
same when necessary. For this purpose the screw cylinder is secured
on its shaft by a tube or sleeve slit longitudinally at one end, and mado
slightly conical externally, which is encircled by a screw collar by
which the sleeve is tightened on the shaft. By loosening this collar the
sleeve may be readily slid up the shaft, raising the screw out of the
baskot as above mentioned. The basket which is enclosed by a casing
as usual to collect the liquid escaping from the sides is provided with a
lip at the top overhanging the edge of the said casing to dischargo the
sugar or other matters treated when raised by the screw over the said
casing. This casing is enclosed by another casing to collect the sugar
or other matter, and deposited on a table which which may either be
stationary or have rotating motion imparted to it with a scraper to gather
the sugar or other matter into a receptacle provided for the purpose.
The sugar or other matter from which the moisture is to be extracted
is fed into the interior of the screw cylinder in a continuous stream and
passed under said cylinder to the sides of the basket, where it is sub-
jected to the centrifugal action in the usual way to expel the moisture
at the same time that it is made to pass up the inclined plane or screw
until it reaches the top of the basket, whence it is deposited on the table
above mentioned.