Improved Apparatus for Drying Cocoa, Coffee, Spice, and the like.
Year: 1893

page_text: Date of Application, 9th Feb., 1893
Complete Specification Left, 11th Dec., 1893-Accepted, 13th Jan., 1994
PROVISIONAL SPECIFICATION.
Improved Apparatus for Drying Cocoa, Coffee, Spice, and the like..
CHARLES RISK, Civil Engineer Grenada, West Indies, do hereby declare the-
nature of this invention to be as follows:-
The
The principle of the apparatus is to be-a forced draught or current of air-
heated to a temperature suitable for drying the product operated on.
apparatus may be described as consisting of a fan driven by manual, steam or
other power, and the draught therefrom, is to pass through a heater, heated by
fire or steam, such hot air is to pass through a cylinder in which the product
is placed the cylinder is to revolve and is to be kept in motion, when the fan is.
operating.
1000
COMPLETE SPECIFICATION.
Improved Apparatus for Drying Cocoa, Coffee, Spice, and the like.
I, CHARLES RISK, of Grenada, West Indies, do hereby declare the nature of
his 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 which relates to an improved apparatus for drying cocoa, coffee,
spice and the like, has for its object to provide a simple and more efficient.
working apparatus than hitherto.
In carrying out my said invention I employ a forced draught or current of
air generated by a fan; said current of air after being forced through a suitable
heater enters into a chamber underneath a perforated revolving cylinder, within
which the product to be dried is placed and so becomes diffused throughout the-
said cylinder.
But in order that my said invention may be more readily understood and
easily carried into effect, I will proceed to describe the same with reference to.
the accompanying drawings.
Figure 1 is an elevation, Figure 2 a plan and Figure 3 a cross section on.
line X. X Figure 1, of my improved apparatus.
Referring to the said drawings I employ a fan A, which may be driven by
manual, steam or other power, but preferably by an arrangement of steam power B.
as shown. The said fan A after being set in motion forces a current of air through
the pipe a into and through a heater C which may be heated by exhaust steam, as.
shown, or otherwise; the air after being heated in the heater C passes through the
pipe or passage d' into a chamber or box D, which is mounted underneath a.
perforated sheet metal or wire cloth hollow cylinder E, which is mounted in the
horizontal position, in such a manner, that it is capable of being revolved by means
of belt, bevel or other gearing from any suitable motor, though, preferably from the
same motor as drives the fan A. The heated air after entering into the chamber D
is deflected upwards by means of the false bottom D¹ and also up towards the one
side of the cylinder E owing to the chamber be placed or formed off the centre line
of the cylinder, the whole arrangement thus causing the heated air to be thoroughly
diffused upwards throughout the cylinder and so dry the cocoa or other product in.

page_text: the same; the said cocoa or other product being placed within the cylinder E and
withdrawn therefrom through the hinged or other end door F, which is provided in
the one end of the cylinder E.
The action of the foregoing is such that after the product to be dried is placed
within the cylinder E and the motor set in motion, the fan A is caused to force a
current of air through the heater C where it becomes heated and is afterwards
diffused throughout the cylinder E, thereby drying the product in a very effective
manner.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1st. The general arrangement, construction and combination of the various parts
constituting my improved apparatus for drying cocoa, coffee, spice and the like,
substantially as and for the purposes hereinbefore described and shown in the
accompanying drawings.
2nd. In apparatus for drying cocoa, coffee, spice and the like, the arrangement
of the fan, heater, and revolving cylinder, whereby a forced draught or current of
heated air is caused to act on the product while it is in motion and thereby ensure
of the product being efficiently dried throughout, substantially as hereinbefore
described and shown in the accompanying drawings.
Dated this 8th day of December 1893
JOHNSONS,
115, St. Vincent Street, Glasgow, Applicant's Agents.