IMPROVEMENTS IN THE CONSTRUCTION OF STOVES AND GRATES
Year: 1884

page_text: I, HENRY THOMPSON, of N° 29 Marquess Road, Canonbury, in the County of
Middlesex, Builder, do hereby declare the nature of the said Invention for
IMPROVEMENTS IN THE CONSTRUCTION OF STOVES AND GRATES," to be as follows:-
CE
This invention consists in improvements in the construction of stoves and grates,
such as Kitchen ranges, and stoves and grates for sitting and other rooms, whereby
the escape of smoke up the chimney is almost, if not entirely, avoided.
The front bars of the stove and grate are constructed and arranged in the
ordinary manner, and. the bottom and back are formed by a series of hollow bars.
Behind those portions of the bars which are situated at the back of the stove or
grate is a chamber which is almost or entirely closed at the top and at its lower
end opens into the ash pit. The lower ends of the said hollow bars are situated in
front of the stove or grate below the front of the fire and the passages through the
said bars are left open at these ends whilst they are closed at the opposite ends,.
and in the said bars are a number of openings leading from the passages therein to
the chamber at the back of the stove or grate. The stove or grate is closed at the
top by a plate which may be so constructed' as to facilitate the supply of fresh fuel,
or the same may be supplied through the front. The front of the space beneath
the bottom of the stove or grate that is to say the ash pit is closed by a plate
provided with a door to allow removal of the ash. The products of combustion
pass from the ash pit through a flue or flues, the mouth or mouths of which is or
are situated near the front of the ash pit, to the chimney and in applying this
Invention to Kitchen ranges and other grates constructed for like purposes, the
flue or Blues instead of passing direct to the chimney may be arranged in close
proximity to the ovens, boilers, or other receptacles which it is desired to heat.
The fire having been lighted the smoke and gases evolved therefrom pass
through spaces between the bars into the chamber at the back of the stove or grate
where they become mixed with a supply of air brought up through the hollow
bars and which enters the chamber from the before mentioned openings in the
hollow bars and in their passage down the said channel and through the ash pit to
the opening of the flue the said smoke and gases are more or less consumed or
combusted.

page_text: COMPLETE SPECIFICATION.
I, HENRY THOMPSON, formerly of N° 29, Marquess Road, Canonbury, but
at present residing at No 33, Alwyne Road, Canonbury, both in the county
of Middlesex, Builden, do hereby declare the. nature of my Invention for
"IMPROVEMENTS IN THE CONSTRUCTION OF STOVES AND GRATES," and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:—
My said Invention consists of improvements in the construction of stoves and
grates, such as those employed for bakers ovens and kitchen ranges, and stoves and
grates for sitting and other rooms, and the said improvements are of such a nature
that the products of combustion, as they escape from the fire are brought into
contact with a supply of highly heated air, the said products of combustion and
heated air are conducted to the ash pit and in their passage to the mouth or
mouths of the flue or flues which are situated near the front of the ash pit the
smoke is almost, if not entirely, consumed, and the escape thereof to the chimney
prevented.
The front bars of the stove or grate are constructed and arranged in any suitable
and known manner and the bottom and back of the fire box or basket are formed
of a series of bars through the entire length of which, or a portion thereof, is an
air passage. Behind those portions of the bars which constitute the back of the
fire box or basket is a chamber which is closed at the top and at its lower part
opens into the back of the ash pit. When the air passages through the said bars
do not extend beyond the back of the bottom of the fire box or basket, it will
be readily understood that the back of the said box or basket may be formed of
separate bars. In some cases, the air passages through a number of the bars are of
such a size as to admit sufficient air to the chamber, at the back of the fire
basket, thereby obviating the necessity of forming air passages in all the bars.
The lower ends of the bars forming the bottom, and, in some cases, the bottom
and back of the fire box or basket, as hereinbefore mentioned, are situated at the
front of the grate or stove below the front bars, the air passages through the
centres thereof being left open at these ends, and the air, travelling through
the said passages, escapes into the chamber at the back of the fire box or basket
through an aperture or apertures made in each bar at the back of the bottom of
the fire box or basket, or in those portions of the bars which constitute the back
of the same..
The fire box or basket and also the chamber at the back thereof
are closed at the top by a plate which may be so constructed as to allow of the
supply of fresh fuel to the fire, or, the fuel may be supplied through the front of
the grate. The front of the ash pit is closed by a door which may be easily
opened or removed. The products of combustion pass from the chamber to the.
ash pit and thence through a flue or flues to the chimney. The mouth or mouths
of the flue or flues is or are situated near the front of the ash pit, and, in some
cases, extend to a point slightly above the fire bars. In cases where the grate
is constructed with a door in place of front bars, suitable apertures for the
admission of air to the body of the fire are provided.

page_text: I will now proceed to refer to the accompanying drawings from which the
nature of my said Invention will be more clearly understood. The same letters of
reference indicate like parts in all the Figures. Figure 1. is a front elevation of a
kitchen range, with an oven on each side, and Figure 2. is a vertical section of the
same through the centre. A. are the hollow bars, B. the chamber at the back of
the grate, C. the ash pit, and D. the mouths of the Blues D₁ leading from the
same. Figure 3. is a vertical section of a grate provided with a door in place
of front bars.
'
The products of combustion pass from the fire and between the bars at the back
of the grate into the chamber B. where they come into contact with the currents of
heated air which escape into the said chamber from the apertures in the said
bars A., the whole then enter the ash pit and in their passage to the flues D¹ the
smoke is almost, if not entirely, consumed. In the accompanying drawings two
flues are shown leading from the respective sides of the asb pit and then arranged
round the ovens, passing under the hot plate, and eventually opening into the
flue E. beneath the floor of the ash pit whence they pass to the chimney, the
arrows in Figure 1. indicate the positions of the flues.
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
In the construction of grates and stoves, the arrangement of the hollow bars A,
the chamber B. and the mouth or mouths D. of the flue or flues near the front of
the ash pit, the top of the grate and the chamber B. being closed, substantially as,
and for the purposes, hereinbefore described and shown in the accompanying
drawings.
Dahil da ST.1.
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1