Improvements in Apparatus for Discharging the Products of Combustion Arising from Gas Fires and the like.
Year: 1899

page_text: Date of Application, 26th Oct., 1899
Improvements in Apparatus for Discharging the Products of
Combustion Arising from Gas Fires and the like.
We, LEON BEUTIER and CHARLES VERNIER, both of 37, Rue Sedaine, Paris,
in the Republic of France, Engineers, do hereby declare the nature of this
invention to be as follows:-
If the means for ensuring the discharge of the burned gases issuing from a
gas geyser or bath heating appliance or other gas appliance established under
ordinary conditions is studied, that is to say an apparatus having an exhaust
pipe directly covering the appliance in question and continued by a chimney
or by an externai draught pipe or flue, it will be noticed that under the influence
of certain local atmospheric depressions, a series of phenomena prejudicial to
the efficient working of the appliance is produced.
In the first place upon igniting the gas in the apparatus in order that a
draught may be established, it is necessary that the entire column of cold air
contained in the chimney or flue shall be heated by the fire, and on this account
certain difficulties are encountered in the kindling of the fire, which for want
of the necessary draught is sometimes smothered or the flames issue from the
apparatus, or again the apparatus is entirely extinguished together with its
pilot jet.
During the normal operation of the apparatus, a puff of wind may enter
the chimney or flue and cause the fire to be smothered or the flames to be driven
downwards or even the complete extinction of the fire and its pilot jet.
On the other hand it frequently happens that the chimney, by reason of its
height, produces a very strong draught. This draught may be such that the
heating surface, being traversed too rapidly by the hot gases, does not attain its
normal temperature, as the heat of the said gases is not sufficiently utilised.
Moreover, under the influence of a violent draught, the air of the apartment
enters the apparatus in too great a quantity thus contributing to cool the heating
surface and may even cause the extinction of the pilot jet.
The apparatus which forms the subject of this invention obviates these defects
and contributes to render the apartment more healthy as will be apparent from
the description hereinafter given with reference to the accompanying drawing,
in which:
Figure 1 represents a section of a valve box or cowl which forms the outlet
aperture of our apparatus.
Figure 2 shews the exterior of the apparatus as a whole.
Figure 3 is a front elevation shewing a modification of the outlet aperture.
Figure 4 is a sectional side elevation of the same.
Figures 5, 6. 7 and 8 illustrate modifications in the manner of arranging the
apparatus, and
Figure 9 illustrates a method of arranging our apparatus with the form of
outlet aperture represented in Figures 3 and 4.

page_text: In the various figures similar letters of reference are used to designate like
parts.
As will be seen upon reference to the drawing, our apparatus comprises an
outlet pipe a of greater or less length formed with a shoulder. The entrance
to this pipe is provided with a kind of lantern 6 constituting a suction device,
and the outlet of the said pipe is provided with a valve box c which opposes the
admission of air from the outside.
The suction device 6 is provided at its lower portion with a collar d attached
by means of flanges e to the body of the said suction device and in which collar
fits the extremity of the discharge pipe f proceeding from the heating apparatus,
this arrangement being adopted in order to admit of the requisite separation of
the pipe and the suction device b, which separation permits of the passage
of the gases arising from the combustion and of the air coming from the interior
of the chamber.
The pipe a connecting the suction device with the valve box may have straight
and curved portions according to circumstances. The valve box c may be of
bell-shaped form as represented in Figures 1 and 2, or of the form of a box as
shewn in Figures 3 and 4.
In either case we arrange inside the casing an inclined partition h furnished
with orifices which are provided with doors or valves j maintained open owing
to their own weight, but which would be momentarily closed under the influence
of a puff of wind. These being open in their normal position allow free exit
for the burned gases.
Our
In order to prevent any obstruction of the valves, or of the orifice formed in
the plate h, by leaves or other objects carried by the wind, we preferably arrange
in front of these valves a metallic gauze k fixed in any appropriate manner.
apparatus may conveniently be fixed against the inside of the wall of the room
in which the bath heater is arranged, in such a manner as to leave about 10 centi-
metres between the extremity of the discharge pipe f and the suction device b.
Upon the outside of the wall the aperture may either be left open or be covered
with a grating, but it is unnecessary to provide a chimney or flue. The outlet
of our apparatus may also be attached to an existing chimney into which the
burned gases will pass, its operation remaining the same. In certain special
cases, although the suction device may be arranged in the room, it may be found
more convenient to place the valve box upon the outside of the wall as shewn
in Figure 9.
If a valve box is employed without a suction device, the result will be that on
the occurrence of a down draught and the consequent closing of the valves the
up draught would cease entirely. The burned gases forced downwards from
the fire would enter the room, whilst no means would exist for subsequently
discharging them therefrom. The fire being smothered for want of air would
be extinguished together with its pilot jet.
The extinction of the pilot jet would also be produced if the up draught were
too strong. Owing to the fact that the chimney or flue is dispensed with, the
column of air is always very short, the draught is established immediately and
the burned gases issue through the valves which are kept partly open by their
own weight.
In addition to the burned gases, the suction device draws in the air of the
apartment thereby establishing a natural ventilation.
The small height of the discharge column prevents a violent draught such as
would be capable of extinguishing the pilot jet.
If there is a draught in the room, the air therein will enter the suction device
but will not pass through the fire, thus obviating inconveniences such as the
extinction of the pilot light, cooling of the heating surface and so forth. Owing
to the suction device, the fire will always burn in a calm atmosphere sheltered
from the effects of atmospheric depressions.
The form of the improved apparatus and the details and dimensions of the

page_text: same may of course be varied without in any way departing from the principle
of our invention.
Dated this 26th day of October 1899.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
Improvements in Apparatus for Discharging the Products of
Combustion Arising from Gas Fires and the like.
We, LEON BEUTIER and CHARLES VERNIER, both of 37, Rue Sedaine, Paris,
in the Republic of France, Engineers, 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:
1
If the means for ensuring the discharge of the burned gases issuing from a
gas geyser or bath heating appliance or other gas appliance established under
ordinary conditions is studied, that is to say an apparatus having an exhaust
pipe directly covering the appliance in question and continued by a chimney
or by an external draught pipe or flue, it will be noticed that under the influence
of certain local atmospheric depressions, a series of phenomena prejudicial to
the efficient working of the appliance is produced.
In the first place upon igniting the gas in the apparatus in order that a
draught may be established, it is necessary that the entire column of cold air
contained in the chimney or flue shall be heated by the fire, and on this account
certain difficulties are encountered in the kindling of the fire, which for want
of the necessary draught is sometimes smothered or the flames issue from the
apparatus, or again the apparatus is entirely extinguished together with its
pilot jet.
During the normal operation of the apparatus, a back current of air may enter
the chimney or flue and cause the fire to be smothered or the flames to be driven
downwards or even the complète extinction of the fire and its pilot jet.
On the other hand it frequently happens that the chimney, by reason of its
height, produces a very strong draught. This draught may be such that the
heating surface, being traversed too rapidly by the hot gases, does not attain its
normal temperature, as the heat of the said gases is not sufficiently utilised.
Moreover, under the influence of a violent draught, the air of the apartment
enters the apparatus in too great a quantity thus contributing to cool the heating
surface and may even cause the extinction of the pilot jet.
The apparatus which forms the subject of this invention obviates these defects
and contributes to render the apartment more healthy as will be apparent from
the description hereinafter given with reference to the drawings accompanying
our Provisional Specification, in which:
Figure 1 represents a section of a valve box or cowl which forms the outlet
aperture of our apparatus.
Figure 2 shews the exterior of the apparatus as a whole.
Figure 3 is a front elevation shewing a modification of the outlet aperture.
Figure 4 is a sectional side elevation of the same.
Figures 5, 6, 7 and 8 illustrate modifications in the manner of arranging the
apparatus, and
Figure 9 illustrates a method of arranging our apparatus with the form of
outlet aperture represented in Figures 3 and 4.

page_text: In the various figures similar letters of reference are used to designate like
parts.
As will be seen upon reference to the drawing, our apparatus comprises an
outlet pipe of greater or less length formed with a shoulder. The entrance
to this pipe is provided with a kind of lantern b constituting a suction device,
and the outlet of the said pipe is provided with a valve box c which opposes the
admission of air from the outside.
The suction device is provided at its lower portion with a collar d attached
by means of flanges e to the body of the said suction device and in which collar
fits the extremity of the discharge pipe f proceeding from the heating apparatus,
this arrangement being adopted in order to admit of the requisite separation of
the pipe and the suction device b, which separation permits of the passage
of the gases arising from the combustion and of the air coming from the interior
of the chamber.
The pipe a connecting the suction device with the valve box may have straight
and curved portions according to circumstances. The valve box c may be of
bell-shaped form as represented in Figures 1 and 2, or of the form of a box as
shewn in Figures 3 and 4.
In either case we arrange inside the casing an inclined partition / furnished
with orifices which are provided with doors or valves ; maintained open owing
to their own weight, but which would be momentarily closed under the influence
of a puff of wind. These being open in their normal position allow free exit
for the burned gases.
Our
In order to prevent any obstruction of the valves, or of the orifice formed in
the plate h, by leaves or other objects carried by the wind, we preferably arrange
in front of these valves a metallic gauze k fixed in any appropriate manner.
apparatus may conveniently be fixed against the inside of the wall of the room
in which the bath heater is arranged, in such a manner as to leave about 10 centi-
metres between the extremity of the discharge pipe f and the suction device b.
Upon the outside of the wall the aperture may either be left open or be covered
with a grating, but it is unnecessary to provide a chimney or flue. The outlet
of our apparatus may also be attached to an existing chimney into which the
burned gases will pass, its operation remaining the same. In certain special
cases, although the suction device may be arranged in the room, it may be found
more convenient to place the valve box upon the outside of the wall as shewn
in Figure 9.
If a valve box is employed without a suction device, the result will be that en
the occurrence of a down draught and the consequent closing of the valves the
up draught would cease entirely. The burned gases forced downwards from
the fire would enter the room, whilst no means would exist for subsequently
discharging them therefrom. The fire being smothered for want of air would
be extinguished together with its pilot jet.
The extinction of the pilot jet would also be produced if the up draught were
too strong. Owing to the fact that the chimney or flue is dispensed with, the
column of air is always very short, the exhaust is established immediately and
the burned gases issue through the valves which are kept partly open by their
own weight.
In addition to the burned gases, the suction device draws in the air of the
apartment thereby establishing a natural ventilation.
The small height of the discharge column prevents a violent draught such as
would be capable of extinguishing the pilot jet.
If there is a draught in the room, the air therein will enter the suction device
but will not pass through the fire, thus obviating inconveniences such as the
extinction of the pilot light. cooling of the heating surface and so forth. Owing
to the suction device, the fire will always burn in a calm atmosphere sheltered 5
from the effects of atmospheric depressions.
The form of the improved apparatus and the details and dimensions of the

page_text: same may of course be varied without in any way departing from the principle
of our invention.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is :—
An apparatus for the discharge of the products of combustion arising from gas
fires and more especially from bath heating appliances and constituted by a pipe a
with a shoulder provided at its inlet end with a kind of suction lantern and
at its outlet with a valve box e provided with an inclined plate h in which are
formed apertures i adapted to be closed by valves ; which are maintained open
owing to their own weight, the admission lantern 6 being provided with a collar d
maintained by ribs e and into which the discharge pipe f fits, this latter being
mounted upon the apparatus in such a manner that there exists in the piping a
continuity of passage through which the air of the room may be drawn so as to
pass out through the valve box c, the suction lantern forming in reality a pre-
liminary orifice for the evacuation during the continuance of each air current
the whole arranged and combined substantially as above described with reference
to the accompanying drawing.
TL 1941 day of 1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicants.