Year: 1887

page_text: Date of Application, 24th Feb., 1887
Complete Left, 18th Oct., 1887
Complete Accepted, 18th Nov., 1887
1 JAMES ALLAN EATON of 5, Ravensdale Road, Stamford Hill in the County of
Middlesex, Civil Engineer do hereby declare the nature of this Invention to be as
follows:-
The apparatus consists of a long box or chamber formed of Metal plates through
the length of which a number of metal flues pass as in a Locomotive Boiler. These
flues or tubes are securely fixed to plates at each end, and arrangements are made for
the expansion and contraction of the flues.
At one end of the box or chamber a furnace is fixed and at the other end there is a
smoke box which communicates with a chimney.
For the more effectual heating of the air and to prevent its passing too quickly
through the chamber, I have a number of vertical plates fixed at intervals in
the box or chamber. These plates I make of the same width as the interior of the box
or chamber but of less depth, the vertical plates are thus fixed: A plate is fixed
alternately to the top and sides-and the bottom and sides of the chamber and by
reason of their depth being less than the depth of the chamber itself a space is left
alternately at the top and bottom of each vertical plate for the passage of the air;
which is thus retarded in its progress and forced to circulate amongst the flues, and
the air alternately ascends and descends in its passage from one end of the chamber
to the other.
The air is admitted at an aperture nearest the smoke box end, and after having
passed through the several divisions formed by the vertical plates in the manner
described, is collected in a box fitted on top of the heating chamber, and from
thence is forced or drawn by a blast fan or other means to the place where it is
to be utilized.
For the purpose of regulating the degree of heat other openings fitted with doors or
slides are provided in one or more parts of the heating chamber for the purpose of

page_text: I, JAMES ALLAN EATON late of 5 Ravensdale Road Stamford Hill in the County of
Middlesex and now of 28 Martins Lane Cannon Street in the City of London Civil
Engineer 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 :-
The apparatus consists of a chamber formed of metal plates through the length of
this chamber a number of Flues pass as in a Boiler. These flues or tubes convey heat
from a fire box or furnace and communicate by flues or in any other convenient manner
with a chimney. This chamber may be set in Brickwork in a similar manner to that
of an ordinary fixed Boiler or may be fitted with a fire box and put on a carriage and
made portable and may be lagged and felted or covered with any non-conducting
material if required. For the more effectual heating of the air and to prevent its
passing too quickly through the chamber, a number of vertical plates which I call
baffle plates are fixed at intervals along the chamber. These plates are so fixed that
there is left a space alternately at top and bottom of each for the passage of the
air to be heated which is thus retarded in its direct flow through the chamber and made
to ascend and descend in the spaces enclosed by the vertical plates and is thus made
to circulate round the flues before described. The chamber is made in the usual way
with iron plates rivetted or welded or fastened with bolts nuts angle and tee iron where
necessary and with wrought or cast iron or steel flues fastened in
any convenient
manner. The chamber may be divided also longitudinally or one or more chambers
may be in connection with each other and may be fitted to a Furnace or furnaces or
gas producers as may be found most convenient. The mode of working is as follows.
Air is admitted into the body of the chamber at a point furthest removed from the
furnace or fire box end and after having passed through the several divisions formed
by the vertical plates in the manner described, is collected at one end in a box or
small chamber and from thence is led by pipes or forced or drawn by means of a Fan
to the place where it is required to be utilized. For the purpose of regulating the
temperature or degree of heat of the air, one or more openings fitted with sliding doors
are fitted to the chamber for the purpose of admitting cold air. The prime object of
this apparatus is to provide clean and heated air for the purpose of drying Tea leaf,
but it is equally applicable to drying berries, grain grasses and may be used for any
other purpose for which air at a high temperature is required.
The Drawings left with the provisional Specification shew a general view of the
apparatus as fixed.
A longitudinal section of the Heating chamber taken through the centre.
Two cross sections of the Heating apparatus shewing the vertical Baffle plates for
retarding the passage of the air.
These Drawings being only intended for the purpose of explaining this Invention
must not be taken as indicating the precise form or construction of the apparatus.

page_text: REFERENCE TO LETTERS ON DRAWINGS.
A. The apparatus as fixed.
a. The outside framework of chamber.
b. The vertical Baffle plates.
c. The Chimney. f. The front tube plate. g. The back tube plate. h. The hot air
chamber. . i. Inlets for air. T. Tubes. S. Smoke box.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is
1. The combination of Flues vertical plates and metal chambers as described.
2. The use of Baffle plates as described fixed in a metal chamber as described.
3. The general arrangement of heating apparatus as described.