An Improved Arrangement for Heating Air and Distributing the same in Malt Kilns and Stores.
Year: 1891

page_text: The decision of the Comptroller-General, of the 24th day of March 1893, allowed,
under Section 18 of the Patents, &c. Act, 1883, an Amendment of this
Specification.
Date of Application, 26th Oct., 1891
Complete Specification Left, 26th July, 1892--Accepted, 27th Aug., 1892
PROVISIONAL SPECIFICATION.
An Improved Arrangement for Heating Air and Distributing the
same in Malt Kilns and Stores.
HORACE WILLIAM JOYCE Rose Cottage Great Yarmouth Norfolk Maltsters
Assistant do hereby declare the nature of this invention to be as follows
-
This invention consists in the improved arrangement of an apparatus or pipes for
conveying and distributing hot air, to and in malt chambers whereof the reek, or
steam arising out of the grain, is prevented from condensing and falling as moisture
in the malt chamber owing to the presence of the hot air, which practically
prevents condensation in the malt chamber and also for the purpose of keeping the
malt dry.
I arrange a cold air pipe which commences at the outer wall of the kiln and
extends inwards preferably in a conical form. A suitable valve is provided therein
for regulating the supply of cold or cool air to the heating chamber to which it is
connected. The said heating chamber is supported upon an armed ring in the
ordinary furnace, the said arms being carried upon suitable racks, by means of
which the heating chamber may be adjusted in a vertical direction. I arrange a
pipe connected to the heating chamber so as to pass through the usual heat disperser
and floor of the kiln. The end which enters the interior of the kiln I prefer to
form so that it expands outwards into a conical shape. Over this opening I attach
or suspend a cone shaped piece of a similar coning, but smaller so that a passage
left for the hot air between the surfaces of the said conings by this means the
heated air is spread through the interior of the kiln and by this means dissipates
the reek or steam arising from the malt and carries it off through a suitable opening
or openings at the top of the kiln. I prefer to construct the heating chamber in a
conical or pear shape as I find this shape tends to heat the air and conduct same
more speedily up the hot air pipe. In a modification of my arrangement I may
dispense with the armed ring and employ a suitable number of chains passing over
pulleys one end of the chain or chains being connected to the heating chamber;
the other end or ends carrying counterpoises or weights. The pulleys may be
attached to any convenient part of the kiln. In this arrangement I con-
Dect the cold supply pipe to the hot air chamber by means of a slip or telescopic
joint.
The hot air pipe is preferably made in two parts telescoping into one
another, one section being attached to the hot air chamber and the other to
the kiln.
By this arrangement I am enabled to raise & swing the heating chamber free
from the heating effects of the furnace if desired.
When it is not required to convey the heat to the drying chamber through the
central pipe aforesaid I shut off communication with the said drying chamber and
convey the hot air by suitable branch pipe to any suitable part of the kiln or
dungeon or that portion of the kiln which is between the furnace and kiln tiles and

page_text: thus introduce a supply of hot air to the malt store or other convenient part for
keeping it dry. Referring to the heating chamber or that part which is heating
the air I construct this in two pieces an upper and lower the lower portion which
is in contact with the fire is preferably made of fire clay or such like while the
upper portion is metal.
These parts are suitably secured together by clamps or the like, by which
means the lower part can easily be replaced when burnt out. I provide suitable
means for raising the heating chamber without disconnecting it from the cold
air pipe.
When carrying the main pipe which supplies the hot air to the grain through
the floor or tiles of the drying chamber, I find it convenient to make the upper
part of the said pipe of a short length in conjunction with a base plate or stand
which steadies the said short end of the main pipe; the spreader fits over this said
short end.
Dated this 26th day of October 1891
E. EATON,
Agent for Applicant.
COMPLETE SPECIFICATION (AMENDED).
An Improved Arrangement for Heating Air and Distributing the
same in Malt Kilns and Stores.
I, HORACE WILLIAM JOYCE of Rose Cottage, Great Yarmouth, Maltster's
Assistant, 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 :—
This invention consists in the an improved arrangement of an apparatus er
pipes for heating air and conveying and distributing the hot air to and in malt
chambers, whereby the reek or steam arising out of the grain is prevented from
condensing and falling as moisture in the malt or hop chamber owing to the
presence action of the hot air, which practically prevents condensation in the malt
chamber, and also for serves the purpose of keeping the malt dry.
Referring to Fig. 1 of the annexed drawings, which is a sectional elevation of a malt
drying kiln arranged according to this invention. I arrange a cold air pipe / which
commences at the outer wall of the kiln and extends inwards, being made preferably
in of a conical form at its outer end h¹ as thoin. A suitable valve i is provided
therein for regulating the supply of cold or cool air to the heating chamber to
which it is connected. The said heating chamber is may be supported upon an
armed ring in the ordinary furnace a, the said arms being carried upon suitable
racks, by means of which the heating chamber b may be adjusted in a vertical
direction. I arrange a pipe e connected to the heating chamber so as to pass
through the usual heat disperser (D), Fig. 2) and floor of the kiln K. The end
which enters the interior of the kiln KI prefer to form so that it expands outwards
into a conical shape f. Over this opening I attach or suspend a cone shaped
piece f, of a similar coning, but smaller so that a passage is left for the hot
air between the surfaces of the said conings. By this means the heated air is
spread through the interior of the kiln K and by this means dissipates the reek or
steam arising from the green malt and carries it off through a suitable opening or
openings o at the top of the kiln. I prefer to construct the heating chamber b
in of a conical or pear shape as illustrated, as I find this shape tends to heat the air
and conduct same more speedily up the hot air pipe e.
In a modification of my arrangement which I have illustrated in Fig. 1 I may
dispense with the armed ring & above mentioned and employ a suitable number of
chains b passing over pulleys d one end of the each chain or chains being connected
to the heating chamber and the other end or ends carrying counterpoises or

page_text: weights a counterpoise or weight c. The pulleys may be attached to any con-
venient part of the kiln. In this arrangement I connect the cold air supply pipe /
to the hot air chamber b by means of a slip" or telescopic joint . The hot
air pipe is preferably made in two parts, telescoping into one another as at e,
one section being attached to the hot air chamber b & the other to the kiln
as shown.
By this arrangement I am enabled to raise & swing the heating chamber 6 free
from the heating effect of the furnace a if desired.
When it is not required to convey the heat to the drying chamber k through the
central pipe e aforesaid, I shut off communication with the said drying chamber and
convey the hot air by suitable branch pipes ; to any suitable portion of the kiln or
dungeon or that portion of the kiln W which is between the furnace a and the kiln
tiles F, and thus also introduce a supply of hot air to the malt store or other
convenient part for keeping it dry.
Referring to the heating chamber b or that part which is heating the air, I con-
struct this in two pieces an upper and lower, the lower portion which is in contact
with the fire and is preferably made of fire clay or such like material, while the
upper portion is metal.
These parts are suitably secured together by clamps 6' or the like, by which
means the lower part can easily be replaced when burnt out.
I provide suitable means for raising the heating chamber without disconnecting it
from the cold air pipe, such as the telescopic joint h³ above described.
When carrying the main pipe e which supplies the hot air to the grain through
the floor or tiles F of the drying chamber K, I find it convenient to make the upper
part of the said pipe of a short length in conjunction with a base plate or stand
which steadies the short end of the main pipe. The spreader f fits over this said
short end.
Referring to the annexed drawings in which
Figure 1 is a view of a molt drying kiln arranged according to this invention.
Fig. 2 sectional plan of the arrangement for heating the air.
9
a is the fire over which the heater bis suspended by weights cand pulleys de
e is a telescopic tube through which the hot air passes to the distributor f which
fite over the end of the telescopie ripe and is attached to a base plate-g, the
cold air is supplied to the henter through a telescopic pipe-h regulated by the
valve i the branch pipes ; may be used to conver heat to the malt or hop store
chamber when required.
Referring to Figure 2. In this case the heater is not in direct contact with
the fuel, there being provided a guard or casing k-through which the pipe--/.
passes
If desired the heater / may be made in two sections the lower section being made
of fire clay & the upper of metal, but I always prefer to use the method of heating
as shown in Figure 2 hereof.
Referring to Figs. 2, 3, and 4. These are respectively- a similar view to Fig. 1,
auctional plan on line 1-1 of Fig. 2, and a sectional eleration of a modified arrange-
ment of heater and protecting prute. The same letters of reference are used to indicate
the parts abore described In this case the heater b is not in direct contact with the fuel
but is projected downirards centrally through the fire basket a, and connected to the cold
air pipe h as shown in Fig. 2, there being provided a guard or cusing k through which it
passes. This arrangement prevents burning and obviates the necessity for any telescopic
joints. It will be obvious that this intention is equally applicable to hop and such like
drying kilns and stores.
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 :-
1. The combined improved construction and arrangement of the apparatus for

page_text: heating air and distributing the same in malt or hop drying kilns and stores sub-
stantially as described and for the purpose set forth in the Specification and
drawings hereunto annexed.
Dated this 2a 16th day of Tulu December 1909
E. EATON,
Agent for Applicant.
J. C. CHAPMAN,
Agent for the Amendment.