An Improved Heating Stove, Burning Gas, Petroleum, or other Liquid Fuel.
Year: 1892

page_text: COMPLETE SPECIFICATION.
An Improved Heating Stove, Burning Gas, Petroleum, or other
Liquid Fuel.
I EUGENE DUTHUIT of 21 Boulevard Poissonnière, Paris, France, 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 relates to an improved stove permitting the rational and methodical
utilization of the heat produced by liquid or gaseous fuel.
In this stove, the products of combustion, after rising in a chimney descend again
traversing successively a series of chambers with baffle plates, whereas the air
circulates from below upward, that is to say in inverse direction, in tubes traversing
the said chambers. The products of the combustion circulating in inverse direction
to the air to be heated, a methodical heating is obtained which permits increasing
the production in notable proportions.
Stove permitting the TRUGLOMU AUTⱭ methodical
utilization of the heat produced by liquid or gaseous fuel.
In this stove, the products of combustion, after rising in a chimney descend again
traversing successively a series of chambers with baffle plates, whereas the air
circulates from below upward, that is to say in inverse direction, in tubes traversing
the said chambers. The products of the combustion circulating in inverse direction
to the air to be heated, a methodical heating is obtained which permits increasing
the production in notable proportions.
DESCRIPTION.
The heating stove the subject of this invention is represented in the accompanying
drawing in which :-
Figure is a vertical section of a stove following the line 9. 10. Figure 6.
Figure 2 is an elevation of part of a stove showing the arrangement of the air
tubes within the chambers.
Figure 3 is a horizontal section following the line 1. 2 of. Figure 1.
Figure 4 is a horizontal section following the line 3. 4 of Figure 1.
Figure 5 is a horizontal section following the line 5. 6 of Figure 1.
Figure 6 a horizontal section following the line 7. 8 of Figure 1.
The stove is composed of a column A, of any desired section (round, oval, square,
polygonal etc.) resting upon a stand B of perforated sheet iron, metallic trellis etc.
permitting the introduction of air.
Within the stand B is placed the lamp L burning gas, petroleum, or other liquid
or gaseous fuel and of any desired form or arrangement, that indicated in the
drawing being represented only by way of example.
The products of combustion derived from the flame or flames F rise in the
chimney within which is a tube C which may slide in the chimney C and
terminates at the top with a flange or ring c¹ and at the bottom by an enlarge-
ment which fits on the burner of the flame.
To introduce the lamp, the tube C¹ is raised, then, when the lamp is in place it
s allowed to lower and it then rests upon its upper flange or ring c¹ and on the
amp burner.
I do not however limit myself to this arrangement as any arrange-
nent fulfilling the same purpose may be employed.
The column A is divided into any number of chambers K', K', K³, K', .... by
orizontal diaphragms D, D1, D2, D3, D....
Each of these diaphragms is pierced with a certain number of holes for the
assage of the tubes T, in any number, which are set in the end diaphragms D, D...
All the diaphragms, with the exception of the upper diaphragm D, are further
ierced with a hole for the passage of the chimney C which opens into the upper
hamber K.
Finally, the intermediate diaphragms D', D³, D' are pierced with communication
oles 0, 0, 0 arranged alternately on the one side and the other side of the
himney C (see Figures 3, 4 and 5).

page_text: products of combustion to circulate between the tubes as will be hereinafter
explained.
The upper screen. E placed in the chamber K is pierced with a hole F (see
Figures and 3) to give passage to the products of combustion from the chimney C
into the upper chamber K¹.
It is evident that the screens instead. of having the V shape represented on the
drawing may be of any form. Therefore I reserve the right of forming them from
a simple plate of sheet iron, doing away with, for example, the face E' e¹, Ee,
E3, Ee, of each screen, thus leaving only the opposite face or half of the screen
to direct the gases between the series of tubes T.
To conclude the description of the apparatus, I would observe that the outer
side of the lowest chamber. K is perforated with a hole receiving a pipe for the
escape of the gases S and that the cap or head! G is in openwork: to, permit: the
departure of the hot air.
WORKING.
(Note. For greater clearness, the full arrows indicate the circulation of the gases
from the combustion and the dotted arrows, the circulation of the hot air.)
When the flame is kindled the products of combustion rise by the chimney C and
spread in the upper chainber K' passing in by the opening F, as indicated by the
arrows (Fig. 3). They lick the air tubes T giving up a certain amount of heat to
the air. which passes: through, these latter from below, upward in the direction, of the
dotted arrows. They then pass from the chamber K¹ to the chamber, K², by the
orifice and circulate between, the tubes of this chamber in inverse direction, as
indicated by the full arrows (Figure 4). When they descend into the chamber K³
by the orifice O2 and travel through it in the same direction as chamber. K'.
Finally, they descend by the. orifice 08 into: the chamber. K and. after having
traversed it escape by the flue pipe S. In each of these chambers they successively
give up heat to the air rising by, the tubes T, so that it, is the hottest air at the
upper part of the tubes which receives the most, heat,, and, the fresh air at. the
base, of the tubes which. is submitted. to the action of. the gases which, have.cooled
by their passage, through the several chambers.
"The heating is therefore methodical.
In conclusion.I would. observe that. I am,aware that, it has: often. been sought to
apply the principle of methodical heating.
But it has never been found possible to apply this, principle in.a. practical.manner
to the warming of apartments, because stoves for solid fuel such. as coal,, coke,
anthracite etc. require, too. great, a draught to, permit. the adoption of a methodical
circulation.
It is owing to the use of liquid or gaseous fuel and. thanks.to.the special arrange-
ments and constructions which.I.have above described. that. I, have been enabled to
obtain practical results.in. this, order of ideas.
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. A heating stove burning gas, petroleum, or any liquid or gaseous. fuel,
composed of a series of chambers, in which the, products of combustion,circulate
successively from. top, to bottom,, in combination with tubes traversing the said
chambers, air, circulating from bottom. to top in.the.said.tubes, with the object of
producing a methodical heating of the air, substantially as above described.
2. In the heating stove of the system above claimed, the arrangement of, baffle
plates ofiany form, in combination, with the diaphragms (D),perforated respectively
at (0), the baffle plates (E) and the orifices (0) being arranged relatively to each

page_text: other, in such wise that the products of combustion are compelled to circulate
alternately in the one direction and the other between the hot air tubes in the
successive chambers formed by the diaphragms, substantially as herein above
described with reference to the accompanying drawing.
Dated this Twenty-second day of October 1892.