IMPROVEMENTS IN KILNS FOR DRYING MALT AND OTHER MATERIALS
Year: 1883

page_text: LETTERS PATENT to Edmund Edwards, of the firm of Edwards and Co:-,
Patent Agents and Engineers, of 40, Southampton Buildings, Chancery Lane,
in the County of Middlesex for an Invention of "IMPROVEMENTS IN KILNS
FOR DRYING MALT AND OTHER MATERIALS a communication to him from
abroad by Jules Beumier, of Jemappes, in the Republic of France
PROVISIONAL SPECIFICATION left by the said Edmund Edwards at the
Office of the Commissioners of Patents on the 23rd June 1883.
,,
EDMUND EDWARDS, of the firm of Edwards and Co: Patent Agents and
Engineers, of 40, Southampton Buildings, Chancery Lane, in the County of
Middlesex, "IMPROVEMENTS IN KILNS FOR DRYING MALT AND OTHER MATERIALS
[a communication to him from abroad by Jules Beumier, of Jemappes, in the
Republic of France]
This invention relates to kilns used for drying various materials but more
especially malt, and it has for its object a novel method of constructing and
arranging such kilns so that the malt is dried not only by heat but by a largo
quantity of warm air which is made to pass through it, so that it is not injured
nor hardened, whilst the process is effected very quickly and without injuriously
affecting its essential qualities as is often the case in kilns as ordinarily heretofore
constructed and used.
The improved kiln consists of an upper horizontal platform of trellis work
or perforated plates upon which the malt or other material to be dried is placed.
On the floor of the chamber below it are arranged two fireplaces into vertical
flues surrounding which air is admitted through external walls by means of pipes
of earthenware or other suitable material and of convenient dimensions, these pipes
being inclined upward at an angle of about 35° from the outside, so that an
ascending current is caused of the air which passes through them, and is promoted
by the heat of the walls of the fireplaces. Above each fireplace a wall or panel of
masonry or other suitable material is also arranged, provided with similar inclined
pipes through which air also enters the kiln, and inclined plates are arranged
above the vertical flues in a chamber in which they meet, so as to contract the
577

page_text: passage and compel the air from the flues to mix with the hot air rising direct
from the fireplaces. This mixture is made more complete by means of a domo of
masonry or other suitable material arranged above the chamber and below the
perforated floor above. From the chamber radiate a sufficient number, preferably
eight, of flues rectangular in section, but decreasing in depth as they leave the
chamber and having their top and bottom inclined gradually upward so that a
uniform and equal discharge of the warm air from lateral openings at their sides
takes place for their full length.
These lateral openings consist of a sufficient number of pipes similar to those
already described, but inclined downward so that the distribution of the warm air
may be more regular, and any sprouts or pieces detached from the malt and falling
through the perforated floor are prevented from getting into the flues.
Adjustablo dampers are arranged in the vertical air dues, to regulate the
quantity of air passing, and doors or dampers above the fireplaces so that the
draught through them can also be regulated.
A horizontal floor or platform is arranged below the radial flues, having openings
by which any grain dropping through the perforated floor above can be removed,
suitable manholes or trapdoors being provided where necessary.
The hot air and the vapour or steam resulting from the drying of the grain or
other material, escape through the roof above which is preferably built of tiles
having suitable openings for the purpose, and through a lantern above extending
-the full length of the kiln and provided with louvre or other openings.
In the improved kiln described, a large quantity of external air is introduced
into the kiln by pipes inclining upward, so that an ascending current is produced
which mixes with and moderates the heat of the air from the fireplaces; whilst by
the radiating flues diminishing in area at their outer ends and having at their
sides a large number of pipes inclining downward, the heated air escapes uniformly
and evenly-below the perforated.floor upon which the malt or other material is
placed.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Edmund Edwards in the Great Seal Patent Office on the
22nd December 1883.
EDMUND EDWARDS, of the firm of Edwards and Co:-, Patent Agents and
Engineers, of 40, Southampton Buildings, Chancery Lane, in the County of
Middlesex "IMPROVEMENTS IN KILNS FOR DRYING MALT AND OTHER MATERIALS"
(a communication to me from abroad by Jules Beumier of Jemappes in the
Republic of France)
This invention relates to kilns used for drying various materials but more
especially malt, and it has for its object a novel method of constructing and
arranging such kilns so that the malt is dried not only by hoat but by a large
quantity of warm air which is made to pass through it so that it is not injured
nor hardened, whilst the process is effected very quickly and without injuriously
affecting its essential qualities as is often the case in kilns as ordinarily heretoforo™
constructed and used.
In the accompanying drawing which is in illustration of the invention, figure 1
is a vertical section of a kiln and fireplace; figure 2 a horizontal section through
the fireplace; figure 3 a plan shewing the distributing flues or channels; figure 4
a front view of a fireplace with its air passages; and figure 5 a transverse section
of one of the distributing flues. The same letters of referenco indicate the same
parts in the several figures.
The improved kiln consists of an upper horizontal platform a of trellis work or
perforated plates upon which the malt or other material to be dried is placed.
On the floor of the chamber below it are arranged two fireplaces b, b, into
vertical flues c, c, c, surrounding which, air is admitted through external walls
d, d, d, by means of pipes of earthenware or other suitable material and of con-
venient dimensions, theso pipes being inclined upward at an anglo of about 35°
from the outside so that an ascending current is caused of the air which passes
through them, and is promoted by the heat of the walls of the fireplaces. Above
each fireplace a wall or panelf (figuro 4) of masonry or other suitablo material is
also arranged, provided with similar inclined pipes or passages through which air
also enters the kiln, and inclined plates g, g, are arranged above the vertical flues
c, c, c, in a chamber in which they meet, so as to contract the passage and compel
the air from the flues to mix with the hot air rising direct from the fireplaces.
This mixture is made more complete by means of a central dome of masonry or
other suitable material arranged above the chamber and below the perforated
floor & above.
From the chamber radiate a sufficient number, preferably eight, of flues i
rectangular in section, but decreasing in depth as they leave the chamber and
having their top and bottom inclined gradually upward so that a uniform and
equal discharge of the warm air from lateral openings at their sides takes place
for their full length.
Theso lateral openings consist of a sufficient number of pipes or passages similar
to those already described, but inclined downward so that the distribution of the
warm air may be more regular, and any sprouts or pieces detached from the malt
and falling through the perforated floor are prevented from getting into the flues.
Adjustable dampers j, j, are arranged in the vertical air flues to regulate the
quantity of air passing and doors or dampers k, l, figure 4, above the fireplaces so
that the draught through them can also be regulated. A horizontal floor or
platform is arranged below the radial flues, having openings 1, 1, 1, by which any

page_text: -
grain dropping through the perforated floor above can be removed, one or more
suitable manholes or trapdoors m being provided where necessary.
The hot air and the vapour or steam resulting from the drying of the grain or
other material escape through the roof above which is preferably built of tiles
having suitable openings for the purpose, and through a lantern abovo extending
the full length of the kiln and provided with louvre or other openings.
In the improved kiln described, a large quantity of external air is introduced
into the kiln by pipes or passages inclining upward, so that an ascending current
is produced which mixes with and moderates the heat of the air from the fire-
places; whilst by the radiating flues diminishing in area at their outer ends and
having at their sides a large number of pipes or passages inclining downward, the
heated air escapes uniformly and evenly below the perforated floor upon which the
malt or other material is placed.
I do not confine myself to the precise number of pipes or passages shewn in the
drawing, nor to the precise form and arrangement-of the-several parts of the kiln,
which may be varied to suit the varying circumstances under which it is to be
used, and the material to be treated; but having now described the invention and
the manner in which it is to be performed, I claim :-
1
The combination in the kiln, of the fireplaces b, b, the flues o, c, c, the walls d,
and panels having inclined pipes or passages through them, the plates g, g, and
flues i, having pipes or passages through them inclining down, with the perforated
floor a, all arranged and operating substantially as described and shewn in the
drawing.
In witness whereof, I the said Edinund Edwards, have hereunto set my hand
and seal this 22nd day of December in the year of our Lord 1883.
WYMIIND FOWARDS