AN IMPROVED STOVE TO BE HEATED BY GAS
Year: 1857

page_text: ne Act.)
PROVISIONAL SPECIFICATION left by Henry Green at the Office of
the Commissioners of Patents, with his Petition, on the 17th February
1857.
I, HENRY GREEN, of Liverpool, in the County of Lancaster, Whitesmith
and Ironmonger, do hereby declare the nature of the said Invention for "AN
IMPROVED STOVE TO BE HEATED BY GAS," to be as follows:-
This Invention relates to a novel and peculiar arrangement of the parts of
stoves intended for heating buildings, and for other similar purposes, by the
economical combustion of gas ordinarily employed for illumination.
It consists in constructing a gas stove of an outer case, which may be of
any suitable shape, form, or design, according to the taste of the manufacturer.
This outer casing may be made double to contain water, or a slow, conducting
or heat-resisting material. Within this casing a series of vertical tubes or
pipes are ranged round its circumference; these extend from the bottom to the
top of the casing, and are intended for the passage of air, which enter-
ing below becomes heated, ascends and escapes at the top. Within this
encircling series of tubes, and at the top of the stove, or at a suitable height
above the burner, is arranged a novel and economical system of heating
chambers or heating surfaces, over which the cold air and products of com
bustion pass, being intimately mixed in proportions which may be regulated,
and during which process the noxious or prejudicial properties of the products.

page_text: of combustion are entirely neutralized, and the whole rendered fit for human
inhalations.
This arrangement is effected by securing, to a metal disc or cover plate a
series of cylindrical vessels bottom downward, within which is a tube, rather
shorter and smaller in diameter, and without a bottom, next within this bottom-
less tube another vessel, with a bottom of still smaller diameter and shorter
than the preceding tube and bottomed vessel, 'and so on as many repetitions or
series of alternate tubes and vessels, each attached to the top or cover plate as
may be suited to the size and form of the stove; and the centre vessel of
the series may be filled with water, and thus by its evaporation moistens the
heated air which has passed through the stove.
Each of the vessels, having a bottom, has round its top edge below its
junction with the top plate or cover a series of perforations for the passage of
the air; thus, air passing in at the bottom of the stove becomes heated by the
gas jets, ascends until its progress is checked by the top plate; it then passes
through the perforations in the top of the first metallic vessel, having a bottom,.
into which it enters, and passing down the annular space between the inside of
the vessel, and the outside of the tube descends to the bottom, and finds its
way round the bottom edge of the tube, when it is directed upward, and is
again arrested by the top plate, the air having to pass through the perforations
in the top of the vessel No. 2, and is again caused to descend as before, and
so on, through as many chambers or annular spaces as there may be in the
series, when the heated air is allowed to escape through a perforated or other-
wise suitably-formed cover.
The ring or burner from which the jets of the gas escape, and wherefrom
the flames are projected when the gas is ignited, is formed by a series of jets,
which instead of being fixed upright are set arround the ring nearly horizontal,
but at an angle, and they form a cone whereby the flames and the air required
for the perfect combustion of the gas are properly brought into contact and
become intimately mixed. A shallow dish containing water should be placed
under the gas burner and be kept filled or nearly full. Iron, terra cotta, fire
brick, or other similar material may be used for the construction of the stove.