Improvements in and relating to Appliances for Drying Cocoa, Coffee, Tea, and the like.
Year: 1895

page_text: Date of Application, 27th May, 1895
Complete Specification Left, 26th Feb., 1896-Accepted, 27th Aug.,
1896
PROVISIONAL SPECIFICATION.
Improvements in and relating to Appliances for Drying Cocoa,
Coffee, Tea, and the like.
I, ALFRED LEONARD GREEN of 8 South Parade, Oakfield Road, Clifton,
Bristol, Gloucestershire, Engineer, do hereby declare the nature of my invention
to be as follows:-
:-
This invention has reference to an improved arrangement and combination of
appliances for drying cocoa, coffee, tea and the like.
According to my improvements I arrange a horizontal flue of brickwork with
furnaces and fire bars at each end, and the products of combustion pass into a
vertical chimney at centre having a partition extending up a certain distance for
separate draughts to be produced for each furnace. I lead a pipe into fue and it
is bent or formed into zig-zag or serpentine indulations to get heated by the
products of combustion. Air forced by a fan or like organ operated by an engine
or other power is supplied to this undulating pipe to get heated. A series of
branches are formed on the end length of this pipe, and to these branches are
coupled a series of pipes or tubes arranged in parallel rows, and each perforated or
serrated on its upper surface or with its ends open. Over these perforated or open
ended pipes trays are arranged formed of perforated metal or woodwork, or of wire
netting or like meshes.
The cocoa, coffee, tea or material to be dried is placed above these trays, and the
air after being heated in the serpentine pipe in furnace passes through the perforated
or open ended tubes and then up through the trays to act on the material and so
perform its functional drying action.
W. R. M. THOMSON & Co.,
96 Buchanan Street, Glasgow, Agents.
Improvements in and relating) to Appliances for Drying Cocoa,
Coffee, Tea, and the like.
I, ALFRED LEONARD GREEN, of 8 South Parade, Oakfield Road, Clifton,
Bristol, Gloucestershire, Engineer, do hereby declare the nature of my invention
and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement in writing, that is to say :—
This invention has reference to an improved arrangement and combination of
appliances for drying cocoa, coffee, tea and the like.
And in order that my said invention and the manner of performing or carrying
same into practice may be properly understood, I have herewith appended an
explanatory sheet of drawings in which
Figure 1 represents a sectional elevation of my improved drier,
Figure 2 is a horizontal section as taken on the line 1-1 of Figure 1, while
Figure 3 is an end elevation looking towards the engine.

page_text: Figures 4, 5 and 6 are a detached front elevation, plan view, and side section
respectively of enlarged details of a modified form of hot air pipe.
and
Figures 7 and 8 are side and end elevations of hinged part of drying chamber,
Figure 9 a section of drying tray and hot air pipe.
Referring to these drawings:
:-
According to my improvements, I arrange a horizontal flue X of brickwork with
furnaces A and B and fire bars N at each end and the products of combustion pass
into a vertical chimney C at centre or any other convenient position having a
partition C¹ extending up a certain distance for separate draughts to be produced for
each furnace, a brick wall X' being preferably placed transversely near the
centre. I lead a pipe D into flue ✗ and it is beut or formed into zig-zag or
serpentine undulations to get heated by the products of combustion, said pipe D
resting on stools D'.
Air forced by a fan G or equivalent operated by an engine H or other power, is
supplied to this undulating pipe D to get heated.
A series of branches E are formed on the end length of this pipe, and to these
branches are coupled a series of pipes or tubes F arranged in parallel rows and each
perforated on its upper or lower surfaces. Or as shown in Figures 4 to 6, the
limb of pipe D nearest the tubes F may be formed as an enlarged chamber D
with bolted on end door D' for cleaning purposes, and the tubes F be secured to
ported branches E¹ on this chamber D.
Over these perforated pipes F, a tray or trays K are arranged formed of per-
forated metal, or woodwork, or of wire netting, or like meshes, the trays resting
on a metal framework L which has hinged sides L' as shown in Figures 7 to 9 for
facilitating the drawing away of material.
Side walls of brickwall M with doors M' for cleaning purposes would extend
from metal frame L to ground level so as to form a close chamber.
The cocoa, coffee, tea or material to be dried is placed above these trays K and
the air after being heated in the serpentine pipe D in furnace passes through the
branches E and perforated tubes F and then up through the trays K to act on
the material and so perform its functional drying action.
Instead of having two furnaces A and B only one may be used, and in that
case the chimney C would be located at the opposite end of the flue X.
Doors may be fitted in the brickwork of flue X for access in cleaning or
repairing.
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 :-
First. The arrangement and combination of appliances for drying cocoa, coffee,
tea and the like, substantially as herein set forth.
Second. In appliances for drying cocoa, coffee, tea and the like, the arrangement
of perforated tubes through which hot air passes to the drying trays above,
substantially as herein set forth.
Dated 25th day of February 1806
W. R. M. THOMSON & Co.,
96 Buchanan Street, Glasgow, Agents.