Improvements in Furnaces for the Combustion of Gaseous Fuel.
Year: 1886

page_text: Improvements in Furnaces for the Combustion of Gaseous Fuel.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co. Patent Agents
Southampton Buildings, in the County of Middlesex, 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 mechanical means for practically applying fuel con-
sisting of a mixture of air and gas to blacksmithing, various kinds of metal
working, and to heating purposes in general, by introducing the same into the
combustion chamber of a forge, or furnace, in a thoroughly blended state. These
results are attained in the manner hereinafter described, and illustrated in the
accompanying drawing, in which :-
Figure 1 is a plan;
Figure 2 is a side elevation.
Figure 3 is a vertical section taken centrally.
Figure 4 is a representation of one of the parts drawn to an enlarged scale.
Figure 5 is a longitudinal section of the same.
Like letters of reference indicate corresponding parts in the several figures.
A represents brick or stone masonry forming a forge, the inner part of which
may be formed of fire-brick, and the whole enclosed in a metal cylinder and cap
conforming thereto. A' is a spherical combustion chamber provided with an
escape A, and an opening A' of any suitable size for introducing into the com-
bustion chamber bars to be heated. The combustion-chamber may be oval or
cylindrical in form, or otherwise as may be deemed advisable, and the same may be
changed to suit the purposes for which the heat is to be applied.
B is a blast pipe, connected through a union-piece band blast conduits B¹ B²,
with gas oxygenizers C C, the construction of which is fully illustrated in
Figures 4 and 5.

page_text: D, D are gas supply pipes, connected with the oxygenizers C, C; and C¹ C¹ are
conduit pipes for introducing oxygenized gas into the combustion chamber A¹.
E is a blast-pipe connected through a union piece E³ with a blast conduit E,
which is connected through union pieces E¹ with gas oxygenizers F F, and
through the curved continuations E, as shown at f, f, with gas oxygenizers F1 F¹
which are provided with gas supply pipes G G having stop cocks G¹ G', as fully
shown in Figure 2.
F2 F3 are conduit pipes connected with the gas oxygenizers F, F¹ and directed
toward the centre of the combustion-chamber A¹ for the purpose of producing a
blast concentric with the combustion-chamber, and thereby attaining a thorough
blending of the elements of combustion, in all the parts of the chamber.
E is an air blast conduit pipe connected through the union piece E* with the
blast pipe E, and thence directed through a recess a of the forge A, and a recess
in the vertical centre of the latter, to the combustion chamber A³ as fully shown in
Figure 3.
•
Referring to Figures 4 and 5, C C represent the gas oxygenizers which are
drawn to an enlarged scale, and in which is the air and gas mixing chamber.
To their rectangular extensions c¹ the gas supply pipes D and G are suitably
connected. The parts d³, d³ are provided with screw-threads, for the connection
therewith of the blast-pipes B, E, and oxygenized-gas conduits C¹, F³, F³.
The blast pipes B and E' may be connected to, and supplied with air through, a
single blast conduit connecting with a fan or other suitable. mechanism for pro-
ducing a similar result.
The operation is as follows, that is to say :-
Gas will flow into the chamber cof the oxygenizers C and F F¹, through the
pipes D, G and will be blended in the chambers c³ with the air blast entering the
latter through the pipes B, E³, E. This mixture of air and gas will be forced
thence through the conduit pipes C¹, F2, F³, in a thoroughly mixed state, into the
combustion chamber A', where the different currents of air and oxygenized gas
will blend with each other and thus be put in condition for thorough combustion,
(whereby a very intense heat will be produced more economically than is otherwise
practicable. The vertical blast through the pipe E' will assist the blending of the
different currents introduced into the combustion chamber, and the action of the
heat in a vertical direction. The pipe E may be provided with a stop cock, for
stopping entirely, or partially reducing, the force of the blast through the same, as
occasion may require. The stop cocks G' G' of the supply pipes connected with
the oxygenizers F F¹ may be used for partially, or entirely, cutting off the flow of
gas into the oxygenizers, as occasion may require, and the pipes E, E, used as air
conduits only.
The form of oxygenizer herein described is preferable for producing a suitable
mixture of air and gas, but the same may be more or less modified without
altering the spirit of the invention, or departing substantially from the con-
struction shown. I therefore do not confine myself strictly to the form described,
but may use any suitable construction therefor, that is adapted to producing the
result specified.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed as communicated
to me by my Foreign Correspondents I declare that what I claim is
First. The combination in a furnace, of a combustion chamber, the air and gas
supply pipes, the oxygenizers or mixing chambers, and the conduits extending
through the furnace wall, the area in cross-section of the mixing chambers being
greater than the sum of the similar area of the pipes, and that of the conduits
equal to said sum, substantially as specified, for the purpose set forth.
Second. The combination in a furnace, of a combustion chamber, the air and gas
supply pipes, the oxygenizers or mixing chambers, and the conduits extending

page_text: through the furnace wall, for introducing into the combustion chamber, sub-currents
of air or gas, or air and gas, and distributing the combustion to all parts of, or
locating the heat of the same in any desired part of the furnace, substantially as
specified, for the purpose set forth.
Third. The combustion in a furnace, of a combustion chamber, the air and gas
supply pipes, the oxygenizers or mixing chambers, the conduits extending through
the furnace wall in positions opposite to each other, and the conduit extending
into the body of the furnace and vertically through the centre of the same into
the combustion chamber, substantially as specified, for the purpose set forth.
HASELTINE, LAKE & Co.,
Agents for Applicant.