IMPROVEMENTS IN KILNS FOR DRYING MALT HOPS AND THE LIKE
Year: 1885

page_text: COMPLETE SPECIFICATION.
We PERCIVAL PLATT and JAMES MYLNE AITCHISON both of the township of
Adolphustown in the county of Lennox and Addington in the province of Ontario
in the Dominion of Canada Yeomen, do hereby declare the nature of our invention
for IMPROVEMENTS IN KILNS FOR DRYING MALT HOPS AND THE LIKE and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement:-
Our invention has for its object to dry malt hops &c in a kiln by introducing
heated air into the kiln above the surface of the malt laid upon the heated bottom
of the kiln so that evaporation will be effected both from the bottom and top of
the bed of malt simultaneously whereby the malt &c will be quickly dried.
Our invention consists of a tube passing through the floor of a kiln, said tube
having radial pipes near its closed upper end discharging downwardly, the lower
end provided with an inverted funnel-shaped mouth piece to conduct heated air
into the tube, whereby the radial pipes will distribute heated air over the surface
of the bed of malt which also is heated from the bottom of the kiln. In the
Drawings which form part of this specification like letters of reference indicate
corresponding parts in all the figures.
Figure 1 is a perspective view of our invention detached from a kiln.
Figure 2 is a vertical section of the same.
Figures 34 and 5 are views of the parts detached.
Figure 6 is an elevation shewing the application of our invention to the floor of
& kiln,
A is the floor of the kiln having a hole through which passes the lower section B
of a tube provided with a bell mouth B' at its lower end, and said section is hung
by rods K from the floor of the kiln.
C is the middle section of the tube provided near its lower end with a collar C¹
which bears on the upper edge of section B, when section B is inserted into the
upper end of section C. D is the upper section of the tube closed at top and
telescoping on section B, so that when the sections B C are in normal position, the
edge of section D bears on the top of collar C¹.
The sections B C fit tightly together so that section D may be raised to any
suitable height and said section D near its top is provided with any suitable
number of radial outlet pipes E directed downwardly, to distribute heated air
passing through the pipes onto the surface of the malt &c covering the bottom of
Din

page_text: the kiln
The floor of the kiln is over a hot air chamber which is heated by a
furnace below and the hot air from the chamber passes up through the sectional
tube and is discharged over the surface of the bed of malt &c on the floor of the
kiln thereby drying the malt on top at the same time as the heat from the floor of
the kiln dries the bed of malt at the bottom, the drying is thus carried on with
rapidity and without the necessity of frequently stirring the malt or hops.
The moisture of evaporation escapes through orifices or outlets in the top of the
kiln, and if desired the heated air conveyed to the sectional tube may be taken
from any source of supply outside the kiln.
Having now particularly described the nature of our said invention and in
what manner the same is to be performed we declare that what we claim is
1st A kiln for drying malt hops &c having a tube B, C, D passing through the floor
and provided with a bell mouth bottom B¹ and radial discharge pipes E at or near
the top or the equivalent thereof, whereby heated air is conducted from the source
of supply and distributed through the discharge pipes over the surface of the bed
of malt, simultaneously with the bed of malt being heated from the floor of the
kiln, as set forth.
2. The method of drying malt, hops &c on the floor of a kiln by discharging
heated air over the surface of the malt simultaneously, with heat applied to the
floor externally, as set forth,
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