Apparatus for Drying Sugar or like Substances.
Year: 1890

page_text: Date of Application, 12th July, 1890-Accepted, 31st Jan., 1891
COMPLETE SPECIFICATION.
Apparatus for Drying Sugar or like Substances.
1 ROBERT PZILLAS of Brieg in the Regency of Breslau in the Empire of
Germany 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 :-
The object of this invention is to provide improved means for the effectual drying
of sugar and other moist substances.
Referring to the accompanying drawings,
Fig. 1 represents a longitudinal section of the apparatus,
Fig. 2 represents a cross section,
Fig. 3 is a plan of the apparatus, and
Fig. 4 a cross section of the withdrawal chamber hereinafter described.
The apparatus consists of a train of sectional wagons a a a open only at their
ends. These wagons when placed end to end and firmly locked together form a
closed channel or tube and contain the substance required to be dried which may
be conveniently spread on shelves so arranged in each wagon as to allow a stream
of heated air to pass over the surfaces of the substance. At one end of this channel
is a fixed chamber band at the other end a moveable chamber e each of which is
slightly larger than one of the wagons and forms a continuation of the channel the
spaces between the wagons and chambers where the former leave or enter the latter
In the floor of each
being closed to the outer air by plates or flaps such as g.
chamber is also a sliding plate or turn-table to facilitate the withdrawal and
insertion of the wagons.
Beyond the chamber e and capable of moving with it is placed a hot air
apparatus c. This is an arrangement with either corrugated surface or tubes
heated by steam or otherwise.
Above the chamber is placed an exhauster f by means of which air is
drawn through the heater c and through the entire length of the channel or
tube.
The wagons a are capable of moving upon a line of rails which is extended
through the chambers and e and under the heater c.
The length of the drying channel may be varied according to requirement by
removing or adding separate wagons a and by shifting the heating apparatus c
together with chamber e.
The chambers b and e are furnished with doors-that in bis represented in the
drawing as a sliding plate at the end balanced by a counterweight over a pulley ;
that in e by a pair of hinged plates in the side of the chamber.
In a convenient position below the chamber b lies a rack d working backwards
and forwards on rollers and actuated by a pinion wheel which may be turned by
hand power either by a double acting lever or by a winch or if desired by a driving
belt and pulley wheel.
This rack bears at one end a hinged plate or ratchet which by means of a
counterweight always tends to set itself in such a position as to engage with a block
under and attached to each wagon when in the chamber 6 thus propelling the
wagon in the required direction, and yielding to pressure on coming in contact with
a block when the rack is moved in the reverse direction. Two sets of racks may be
used as shown in Figs. II and III.
The working of the apparatus is as follows.
After the wagons have been arranged to form a channel or tube of the desired
length so that both ends are made continuous with the chambers bande the door
of is opened and a wagon loaded with moist material is introduced and the door

page_text: re-closed. The fan being now in operation the propelling gear is set in motion and
the whole train of wagons is pushed forward until the one at the other end occupies
the chamber e. It is then withdrawn through the side door and loaded with moist
material. It is then run back outside the channel or tube and introduced into the
chamber in the same way as the preceding one. The rack is brought back to its
former position, the propelling gear again set in motion and the whole train of
wagons again moved forward one wagon length. This process is repeated until at
length the first loaded wagon enters and occupies the chamber e. Its load being
thoroughly dry it is withdrawn through the side doors, the material taken away to
its destination, and the wagon re-loaded with moist material and re-introduced to
chamber, and so on, a wagon being withdrawn with a dried load and one
introduced with a moist load at each operation.
Many drying apparatus heretofore well known have had either a rigidly fixed drying
channel of unadjustable length or else a channel through which the material to be
dried was forced or propelled, whilst with the present invention the channel can be
made longer or shorter according to requirement by means of the sectional
wagons.
It is obvious that if preferred the chamber b may be made moveable and the
heater c and chamber e fixed or both may be made moveable.
с
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
In apparatus for drying sugar or other substances a channel or tube consisting of
several sections or wagons moving upon wheels or otherwise and the length of
which can be altered according to requirement by the addition or removal of its
separate sections and by the shifting of the heating and removal chambers
substantially as herein described and as illustrated by the accompanying sheet of
drawings.
Dalhin 7th day a Lano 1901
POPPLEWELL & Co.,
17 & 18, Southampton Buildings, London, W.C., Agents for the Applicant.