Drying or Roasting Oven or Furnace.
Year: 1899

page_text: Date of Application, 2nd June, 1899-Accepted, 29th July, 1899
Drying or Roasting Oven or Furnace.
I, COUNT ALBERT DILLON DE MICHEROUX, of-15, Rue Blondeau, Namur, Belgium,
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 present invention relates to an oven for drying or roasting materials of any
kind in which said materials are not exposed to the direct action of the source of
heat and of the gases resulting therefrom.
The annexed drawings illustrate by way of example one form of construction
of the oven.
Figure 1 is a side elevation partly in section,
Figure 2 is a front elevation, also partly in section.
In a solid mass of brickwork A there are arranged, preferably horizontally,
any desired number of fixed tubes H of earthenware or of metal, provided with
charging doors G in front, and with discharging doors G¹ at the rear, these being
fitted to a kind of headpiece J of metal.
The tubes H which are of any desired shape and of dimensions suited to the
articles to be dried or roasted, are supported by refractory bricks B and by iron
girders C which also serve in lieu of tie-rods for keeping the mass of brick-
work A together.
The tubes H are formed of truncated portions connected together by means of
flanges. In their interior the tubes H are provided with two or more rails or
projections h to which there are fitted some rollers designed to enable the carriage
to roll along, which serves to carry the articles or materials to be dried or
roasted. The headpiece J is provided with a pipe J₁ that communicates with
the drum K. The two latter parts J¹ and K serve for the passage of the vapours
to be condensed, and of the gases which may be produced during the drying or
roasting operation. The pipe J¹ is provided with a valve (not shown in the
drawing) that shuts off the passage of the vapours and gases in the drum during
the discharging operation. The tubes H are arranged in the furnace in staggered
or baffle-fashion on the bricks B, and they form with the latter, the flues E in
which the combustion of the gases takes place for the purpose of heating the oven.
The gas which is to be burned is brought in by means of the duct D upon which
there are mounted branches or brackets to which there are fitted the burners d¹
which may vary as desired in form, position or arrangement, and number.
The air necessary for the combustion of the gases is supplied by means of the
apertures provided with doors F, and it circulates around the branches or
brackets & and is separated from the burners by means of a partition
Above the burners there are arranged domed metallic fabrics, shown in dotted
lines, which have the result of separating the tubes H from the flame of the
burners and of distributing the heat more uniformly towards the walls of the
flues E. To charge the oven, the doors G and G¹ are opened, and the valve of
the pine is closed for the purpose of cutting off the communication with the
drum K. The carriage which is brought to the outside of the tube H through

page_text: the door G, is, charged and is pushed gradually into the tube H. As soon as
it is full up, the door G is closed, then the valve in J is raised again, and the
door G¹ is then shut immediately..
The heat of the burned gases resulting from the combustion of the burners
circulate between the flues and effect the drying or the roasting of the materials
enclosed in the tubes H, according to their temperature which can be regulated in
accordance with the supply of the gas and the nature of the materials.
In the drawing there are shown by way of example, compressed fuel blocks
or briquettes of coal I. Any other materials may also be dried or roasted in
the same way.
As soon as the operation is finished, the valve is closed again, the door G is
opened, and the carriage is drawn on to a truck coupled to a crane which is
operated by mechanism to raise the carriage and to cause it to pass out of one of
the tubes H for the purpose of discharging the same. When the carriage is
discharged it is pushed back into the tube H through which it travels and passes
out at G. The oven may also be heated by means of a fire place or furnace like
an ordinary oven instead of being heated by gas.
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) An oven for drying and roasting materials of any kind, characterized by
ducts in which are placed the materials that are to be treated whilst out of contact
with the walls of said ducts, the said ducts being situated in a solid mass of
brickwork in which the heat is produced, as set forth.
(2) An oven for drying and roasting materials of any kind, characterized by
ducts situated in a solid mass of brickwork, and by carriages in the ducts for the
purpose of keeping the materials to be treated out of contact with their walls, as
set forth.
(3) An oven for drying and roasting materials of any kind, characterized by
ducts situated in a solid mass of brickwork, and by pipes which connect said
ducts with a drum for the purpose of collecting or recovering and condensing the
gases and vapours which are given off from the products being treated, as set
forth.
(4) An oven for drying and roasting, substantially as described and shown.
day or June 1.
ROBERT E. PHILLIPS, Assoc.M.Inst.C.E., M.I.Mech. E.,
Chartered Patent Agent,
70, Chancery Lane, London, W.C., Associate Agent.