Improvements in or connected with Gas Fires or Stoves.
Year: 1898

page_text: Date of Application, 7th Mar., 1898
Complete Specification Left, 7th Dec., 1898-Accepted, 4th Mar., 1899
Improvements in or connected with Gas Fires or Stoves.
I, EDMOND WALTER TYRRELL RICHMOND, of Academy Street, Warrington, in
the County of Lancaster, Engineer, do hereby declare the nature of this invention
to be as follows:-
This invention has reference to gas fire heating stoves or apparatus of the
condensing type, i.e. stoves in which the vapours or gases, or some of them, rising
from the combustion of the gas, are condensed within the apparatus.
The improvements under this invention, will be described in connection with a
stove of this type, in which the gases of combustion are led by pipes to the upper
part of the stove, and thence, are conducted down therefrom by other pipes to the
base.
At the upper part of the stove there is a chamber supported upon the ends of the
tubes, all of which lead into this chamber. Some of these tubes, say at the front,
are up-take tubes for the ascending gases of combustion from the fire below; and
the others, say, at the sides, and back, are descension and condensing tubes.
The construction of this upper portion of the stove, in the first place, consists
of a tray or dished plate with apertures in it, which receive the upper ends or
spigots of the tubes over which it fits, and rests on flanges on the tubes, which, in
some cases, project slightly through.
These tubes and the tray are jointed up together, and condensed water is pre-
vented from getting into the joints as follows:-On the bottom of the tray, and
round the spigots of the pipes, thence is provided a sheet of asbestos board or
in
asbestos cloth, or the like, with apertures corresponding with those
the tray; and over this there is a layer of white lead, or other suitable jointing.
Then above this, there is a plate which screws down on to the jointing, say at the
corners and internal parts, by which the joint between the tray and the pipe
spigots is made.
This plate has holes in it corresponding with those in the tray, as to position,
but smaller in size, and the edges of the metal round them projects over or rest
on the ends of the spigots of the pipes, by which means, water of condensation is
prevented from getting in to the jointing, but is so conducted as to flow directly
down the tubes; and the edges of the apertures are inclined or grooved to assist
this result. The tray is recessed at the central part, and the plate, just described,
fits into this recess.
On to the top or over this plate there is another plate, which distributes the gases
downwards over the different tubes; and on this plate, over these tube ends nearest
the up-take tubes, there is a hood or shield, so arranged, that the gas, in order to
pass down these tubes, has to travel to the end of the hood, and then into them;
while above the other tubes there are simple holes in the plate. This plate rests
in a ledge formed round and in the tray, which is preferably, grooved to receive
a packing to make a tight joint; and it is formed internally, so as to bear upon
the former plate described, at the points required, to prevent the gas passing directly
away to the down-tubes.
Again over the latter plate described, there is fitted a dome or cover in the form

page_text: of an inverted tray, the edges of which are in the form of flanges, and rest upon
the edges of the distribution plate; they being grooved to receive a packing to make
a tight joint; and this hood is held down by bolts to the cover or tray. This
cover or hood is imperforate, and forms a chamber to the outlets, and inlets, of the
ascension and descension tubes.
Over the whole of these parts, and projecting over the upturned edges of the
tray, there is another inverted cover perforated at this upper part, and so made
as to leave a space between its edges, and the edges of the tray, to admit air into
it. The whole cover rests on the edges of the tray; and the air circulates over
the cover or door described, and out through the openings in its upper part.
Dated this 1st day of March 1898.
CHEESBROUGH & ROYSTON,
Applicant's Patent Agents, 15, Water Street, Liverpool.
Improvements in or connected with Gas Fires or Stoves.
I, EDMOND WALTER TYRRELL RICHMOND, of Academy Street, Warrington, in
the County of Lancaster, Engineer, 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 has reference to gas fire heating stoves or apparatus of the
condensing type, i.e., stoves in which the vapours or gases, or some of them, rising
from the combustion of the gas, are condensed within the apparatus.
The improvements under this invention, will be described in connection with a
stove of this type, in which the gases of combustion are led by pipes to the upper
part of the stove, and thence, are conducted down therefrom by other pipes to the
base.
At the upper part of the stove there is a chamber supported upon the ends of the
tubes, all of which lead into this chamber. Some of these tubes, say at the front,
are up-take tubes for the ascending gases of combustion from the fire below; and
the others, say, at the sides, and back, are descension and condensing tubes.
The construction of this upper portion of the stove, in the first place, consists
of a tray or dished plate with apertures in it, which receive the upper ends or
spigots of the tubes over which it fits, and rests on flanges on the tubes, which, in
some cases, project slightly through.
'
The invention will be described by the aid of the accompanying drawings, in
which Figure 1 is a cross section of the upper part of a stove or fire-place according
to the invention; and Figure 2 is an upper view of the hot gas distributing plate
according to the invention. Figure 3 shews a modification.
Referring to the drawings, a is a dished plate or tray and are the heating tubes,
the upper ends or spigots of which fit into sockets or recesses in a Figure 1,
62 are flanges on the tube spigots b', and on the outer angle formed by the spigots
and these Hanges, a suitable cement or packing material 63 is introduced to assist
in making a joint at this part. c is a plate fitting in the bottom of the dish a;
and dis liner of asbestos or the like, or white lead or like material, fitting in
between c, and the bottom of the dish, and by which the liquors of condensation
are prevented from escaping, except through the apertures designed for it. These
apertures are designated c¹, and are disposed over the openings a' in the bottom of
the dish, the edges of which are carried down as shewn, or inclined, to prevent
the liquors of condensation getting at the tube joints. The plate e is suitably
screwed down tight on to the dish or tray a.
e is the gas distribution plate: In it, at the point directly above the two centre

page_text: front tubes 6, up which the gases rise from the gas-fire, (which may be arranged
in any known suitable way) there is a gap e¹; and directly behind this, there is
an arched hood e2 open at each end at e.
"
This hood stands over the three centre downtake passages c¹ at the back of the
stove, while the other apertures at the ends of the stove, are freely open to the
gas space or chamber above them.
This plate e is screwed down on to the plate c below, at the corners, or at other
parts where it may be deemed desirable; or to the tray a, or both. f is an enclosing
dome or cover in the form of an inverted tray, the edge f¹ of which, fits in a groove a²
in the tray a; and this groove is provided with a packing of cement or other
material, to make a gas tight joint between it and the tray. This hood is held down
suitably by bolts passing through the two end tubes b, and secured to the base
of the stove; and it forms an imperforate chamber to the tubes and parts below.
y is another dome or cover fitting over, and resting on the edge of the tray a; and
this dome or cover may be perforated, so as to admit air into it, so as to come in
contact with the outer surface of the dome f; openings being provided at the
edges of the tray a, through which the admittance of air takes place as indicated
by the arrows in Figure 1. The air, when heated, passes out through suitable open-
ings in the upper part of the cover.
As regards the heating tubes, the two centre front ones are the up cast or
ascension tubes; and the rest are down-cast or descension tubes.
In action, the gases pass up from the two ascension tubes through the
openings c in e, to the space or chamber above the plate e, under the dome f.
When in this chamber, the gases are prevented from passing directly from the up-
cast pipes to the down cast pipes nearest them-viz., those under the hood e³
on account of the presence of this hood; and thus are distributed, some passing down
by the apertures, namely, to the end tubes of the stove, and some passing
through the openings e3 at the end of the hood, or shield e², to the space beneath
it, and to the openings in the plate and to the tubes below these openings.
In the modification shewn in Figure 3, the plate c set forth with reference to
Figures 1 and 2 is dispensed with."
The upper portion of the stove and the lower are shewn connected together by
bolts 64. In other respects, the construction of this figure is practically the samo
as that shewn in the figures first described; viz., the parts are so constructed that
water of condensation taking place in the chamber under the hood or roof f, is
guided, and led through the holes a¹ into the tubes b, and away from the joints;
and is thus prevented from getting into them.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, 1 declare that what I
claim is:
1. A condensing gas stove or fire, in which the upper part comprises a dished
plate or tray and a cover or roof, and is constructed substantially as described,
whereby the liquors of condensation are prevented from getting into the joints,
and operates, as and for the purposes set forth.
2. A. condensing gas stove or fire, consisting of an upper tray a supported upon
and jointed to the heating tubes, and an inverted cover or hood, f; substantially
as and for the purposes set forth.
3. A condensing gas fire or stove, comprising tubes, tray or dished plate, cover
or dome, and parts as shewn in and set forth with reference to Figures 1 and 2
and Figure 3 of the drawings, and operating as described.
Dated this
day of December 1898
CHEESBROUGH & ROYSTON,
Applicant's Patent Agents, 15, Water Street, Liverpool.