Improvements in or connected with Stoves and other Fireplaces for the Better Consumption of Fuel.
Year: 1891

page_text: Date of Application, 21st Jan., 1891
Complet: Specification Left, 17th Oct., 1391-Accepted, 21st Nov., 1891
PROVISIONAL SPECIFICATION.
Improvements in or connected with Stoves and other Fireplaces for
the Better Consumption of Fuel.
I, FREDERICK JACKSON of Greasborough in the County of York, Clerk, do
hereby declare the nature of my invention to be as follows:-
This invention of improvements in or connected with stoves and other fireplaces
relates more particularly to the means for facilitating the consumption of anthracite
coal but other coal or fuel may be used if desired. The object of the invention
is in devising means to direct the supply of air or draught through the fuel,
instead of only partially passing through it as in stoves and fireplaces, as at present
constructed.
Our invention may be readily adapted to existing fireplaces, as well as in the
construction of new ones.
In the adaptation of our invention to an existing domestic fireplace for example,
the opening over the fireplace into the chimney is closed by a plate or sheet of
metal which also extends downwards preferably passing below the ordinary level
of the fuel, at the back of the fireplace.
It is shaped so as to leave an air passage or flue between the back of the plate
and the back of the grate for the passage of the heated gases or products of
combustion to the chimney, and thus causing the air supply to pass through the
burning fuel.
A. hit and miss" regulator or ventilator is fixed in the upper part of the
beforementioned plate, to regulate the amount of air or draught passing through
the fire.
The apparatus may be permanently fixed, or may be made removable, and a
damper or valve may also be used in combination. In fireplaces constructed
expressly on the above plan, sheet metal may be dispensed with, and the opening
for the passage of the heated gases be constructed in the cast metal back of the
fireplace, or in the firebrick forming the back or otherwise.
In the construction of a stove, the exit aperture would be similarly placed, as
before described, so that the air supply should be drawn through the fuel.
A combustion chamber may be used in combination with the above described
method if desirable.
Dated the 20th day of January 1891.
ROBT. F. DRURY, Fel. Inst. P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.
COMPLETE SPECIFICATION.
mprovements in or connected with Stoves and other Fireplaces for
the Better Consumption of Fuel.
I, FREDERICK JACKSON, of Greasborough, in the County of York, Clerk, 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 of improvements in or connected with stoves and other fireplaces,
relates more particularly to the means I employ for facilitating the consumption
of anthracite coal; but other coal or fuel may be used in connection therewith if
desired.

page_text: The object of the improvements is to direct the supply of air to support com-
bustion, through the body of the fuel in the grate in its passage to the flue or
chimney, instead of the bulk of air being allowed to pass over the fuel as is the
case in fireplaces as at present constructed.
I have illustrated the most convenient method of applying the invention to an
ordinary fireplace, in the annexed sheets of drawings in which
Fig. 1. is an elevation of the stove or fireplace, made according to my invention,
but of a common design.
Fig. 2. sectional diagram of same.
Fig. 3. section showing opening through firebrick.
Similar letters of reference indicate similar parts in either of the figures, and
I may here remark that the invention may be readily applied to existing fireplaces,
such as the one illustrated.
In such a case the usual opening over the fire grate is closed by a plate or sheet
of metal marked A, which extends downwards below the ordinary level of the
fuel in the grate, projecting a little distance from the back so as to leave an opening
or, mouth B, for the passage of air, between the back of the plate, and the firebrick E,
or other back of the fireplace. This opening or mouth may be divided into a
number of mouths, and through it or them as the case may be, the air for com-
bustion and the products of combustion pass forward to the flue of the chimney, C.
The air to support and promote combustion is by this arrangement drawn through
the fuel in all directions.
In order to regulate the draught of air passing through the fuel, and thereby
control the consumption, I fix a "hit & miss" ventilator marked D. in the upper
part of the beforementioned plate A, and it will be readily understood that when
the ventilator is open for the passage of air, it will reduce the force of the current
passing through the fuel, and vice versa.
Instead of a ventilator as described a damper or valve may be used in the flue,
or they may be used in combination.
In fireplaces made expressly to carry out this invention, the sheet metal plate
may be dispensed with, and the cast metal back be specially constructed for the
purpose, or the mouth for the passage of the heated gases may be formed in the
firebrick backs that are now so commonly used.
In fireplaces commonly called stoves, the mouth or aperture for the passage
of the heated gases from the burning fuel, is placed as before described, so that
the air supply is drawn through the fuel.
A combustion chamber may be used in combination with the above described
arrangements if desired.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner it may be carried into effect, I declare that what I
claim is :-
The improvements in or connected with stoves and other like fireplaces, for
the purpose of inducing the draught to pass through the fuel; namely,
arranging the mouth of the flue, at or below the level of the fuel, in combination
with means for regulating the draught, substantially as hereinbefore described and
⚫illustrated.
Dated the 14th day of October 1801.
ROBT. F. DRURY, Fel. Inst. P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.