Year: 1896

page_text: I, GEORGES EUGÈNE WERY of 59, Rue Boissière Paris, France, Engineer, do
hereby declare the nature of this Invention to be as follows:-
My Invention relates to improved apparatus for effecting the consumption of
smoke from furnaces. Each element of the apparatus consists essentially of an
inner tube of round, square, or other section through which the furnace gases
ascend, enclosed by a concentric outer tube of similar section which may be of
slightly conical form and is open at its lower end and is connected at its upper end
to the inner tube by a flange or otherwise. At the upper and middle parts of the
inner tube thus enclosed, rows of air inlet holes are formed around the circum-
ference of the inner tube through which air admitted at the lower end of the
enclosing tube and heated by contact with the inner tabe enters the latter and
becomes mixed with the hot gases therein, the air draft thus entering being
uniform around the whole circumference of the inner tube and controlled by
dampers.
The inner and outer tubes may be made of sheet iron and in lengths coupled
and strengthened by short joint sleeves or ferrules to which the lengths of tube
are rivetted, the air inlet orifices being made in these coupling sleeves or ferrules
and in one or more rows situated between the adjacent ends of the lengths of
tube to be coupled together. Or the tube may be made of cast iron and have
the portion in which the air inlets are formed cast in one therewith and the inlets
may be surrounded by internally projecting and upwardly inclined flanges.
A number of such elements are juxtaposed to form a nest fitting the area of the
chimney or flue in which they are placed and several such nests may be super-
posed in tiers, the inner tubes affording continuous passages for the furnace gases
whilst the spaces around the inner tubes of different tiers are separated by trans-
verse division plates, air being admitted to such spaces through rows of inlet
orifices in the walls of the chimney just above the division plates.
According to another arrangement the nest of tubes provided with surrounding
sheaths and air inlets as above described is contained within the uptake member
of a siphon-shaped bye-pass flue communicating by both ends with the horizontal
main flue at opposite sides of a damper so that when the latter is opened the gases
pass direct to the chimney and when it is closed they pass through the smoke

page_text: consuming bye-pass, this bye-pass being either erected upon or alongside of the
main flue leading to the chimney":
As chimneys are often too high for the proper working of the apparatus, I
provide within the chimney at a suitable point in its height a hollow ring
extending around the sides of the chimney so as to constrict the passage, said ring
being pierced with holes on the upper side and supplied with air through a pipe
rising within the chimney and having the air inlet outside the base of the
chimney controlled by a damper.
Instead of the bye-pass in which the smoke consuming apparatus is located
being siphon-shaped it may comprise an uptake chamber containing the nests of
inner and outer babes in superposed tiers separated, as far as the air admission
and heating spaces are concerned, by horizontal division plates as above described.
The bye-pass in this case rises from the horizontal flue, just in front of the
chimney stack and leads directly into the latter at its upper end; dampers being
provided to direct the furnace gases through the smoke consumer or direct to the
chimney, as may be required.
In one form of apparatus having a large extent of surface, hit-and-miss sliding
dampers are provided to regulate the distribution of air to each of the smoke
consuming tubes.
In applying the Invention to the chimney of a portable engine the lower part
of the chimney is provided with air inlet orifices as before and is surrounded by a
closed outer casing having at the lower part a lateral air inlet controlled by a
damper.
In applying the Invention to a locomotive the smoke consuming, apparatus
constructed as described is located at the lower part of the chimney, partly, within
the smoke box, and takes in air through passages rising within the smoke box and
having their inlets controlled by dampers at the lower part of either side of the
smoke box. Instead of the exhaust being delivered through a single blast nozzle
below the chimney, separate exhaust pipes from the two cylinders enter the sides
of the chimney above the smoke consuming. apparatus.
Dated this 24th day of November 1896
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents,
I, GEORGES EUGÈNE WERY of 59, Rue Boissière Paris, France, 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:-
My invention relates to apparatus whereby a more complete consumption of
smoke from furnaces will be effected than by any of the numerous smoke-con-
suming apparatus heretofore devised which have not given satisfactory results
either as regards smoke consumption or economy..
The invention will be described with reference to the accompanying drawings
forming part of this Specification wherein Figure 1 is a vertical section of the
apparatus, illustrating the principle and construction. Figures 2 and 3 are
respectively a vertical and horizontal section shewing the apparatus applied in a
factory chimney. Figures 4 and 5 are vertical and horizontal sections shewing
the apparatus as located upon a horizontal flue leading to the chimney so as to

page_text: form a syphon-shaped bye-pass for the gases. Figures 6 and 7 are vertical and
horizontal sections shewing the apparatus applied alongside the flue. Figures 8, 9,
and 10 shew the apparatus placed above the horizontal fiue and leading at the
upper part directly into the chimney. Figures 11 and 12 are vertical and
horizontal sections of a smoke-consuming apparatus of large size. Figures 13
and 14 are longitudinal and cross sections of one of the "sliding dampers for
regulating the admission of air thereto. Figure 15 shews the apparatus applied
to a portable engine. Figures 16, 17, and 18 shew the apparatus as applied to a
locomotive.
As shewn in Figure 1, each element of the apparatus consists essentially of an
inner tube a of round, square, or other sectional form, through which the furnace
gases ascend, enclosed by a concentric outer tube b of similar section and of
slightly conical form, this outer tube being open at its lower and connected at its
upper end to the inner tube a by a flange c or otherwise. At the upper and middle
parts of the enclosed portion of the inner tube a rows of air inlet holes are
formed, the holes of one row preferably alternating with those of an adjacent row
so that the air inlet extends around the entire circumference of the inner tube a.
Air is admitted at the open lower end of the enclosing tube b and after becoming
heated by contact with the inner tube a it enters the latter through the holes d,
as shewn by the arrows, and becomes mixed with the hot gases therein, the air
draught thus entering being uniform around the whole circumference of the
inner tube a.
The inner and outer tabes a b may be made of sheet iron the inner tube being
in lengths coupled together and strengthened where the inlet orifices are situated,
by short joint sleeves or ferrules e to which the lengths of tube are rivetted, the
air inlet orifices d being made through these coupling sleeves or ferrules and also
through the tube a, as shewn at the upper part of the Figure, or between the
adjacent ends of the lengths of tube a where they are coupled together as at the
lower set of holes. The ferrules e thus strengthen the tabe a and prevent it becoming
mis-shapen under the heat of the gases and interfering with the proper action of
the apparatus. In practice the cold air inlet would be under the control of
dampers. Instead of using sheet iron the tubes may be made of cast iron and
have the sleeves or ferrules above mentioned, in which the air inlets are formed,
cast in one therewith and so formed that the inlets d project inwards into the
tube a in an upwardly inclined direction.
In Figures 2 and 3 I have shewn a number of such elements juxtaposed in a
casing to form a nest fitting the area of a factory chimney in which they are
placed, several such nests being superposed in tiers each element being formed of
an inner tube a enclosed in a concentric outer tube b with air inlets as above
described, the inner tubes a affording continuous passages for the furnace gases
whilst the spaces around the inner tubes a of different tiers are separated by
transverse division plates f, air being admitted to the spaces in which different
tiers are thus enclosed through rows of inlet orifices g in the walls of the chimney
just above the division plates, there being as many rows of orifices extending around
the chimney as there are tiers of tubes."
Figures 4 and 5 represent another arrangement wherein the superposed nests
of tabes a provided with surrounding sheaths b and air inlets d as above described
are contained within the uptake member of a siphon-shaped bye-pass flue erected
apon or alongside of the main flue h leading to the chimney. The bye-pass flue
communicates by both ends with the horizontal main flue hat opposite sides of a
damper j, so that when the latter is raised so as to close the passage through the
bye-pass the gases pass direct to the chimney, as indicated by arrow 1, and when
it is lowered so as to close the direct passage, as shewn in Figure 4, they pass
through the smoke-consuming tubes a of the bye-pass, as shewn by arrow 2. The
gases from the furnace thus traversing the nest of tubes a become consumed by
the air from the exterior entering through the rows of orifices g through the
walls of the uptake of the bye-pass, into the annular spaces where it becomes

page_text: heated by contact with the hot walls of the tubes a and entering said tubes
through the rows of orifices d in the ferrules or sleeves of the tubes as above
described it becomes mixed with the hot gases passing up through the tubes a.
In Figure 6 the smoke-consuming apparatus is shewn as placed at one side of
the main flue, the operation being otherwise the same.
As chimneys are often too high for the proper working of the apparatus, I
provide within the chimney at a suitable point in its height a hollow ring
extending around the sides of the chimney so as to constrict the passage there
through, said ring being pierced with holes on the upper side and supplied with
air through a pipe m rising within the chimney and having the air inlet outside
at or near the base of the chimney the tube being controlled by a damper to
regulate the admission of air.
Instead of the bye-pass in which the smoke-consuming apparatus is located
being syphon-shaped it may comprise an uptake chamber, as shewn in Figures 8,
9, 10, containing the nests of inner tubes a and outer tubes 6 in superposed tiers
separated by horizontal division plates dividing the uptake into separate heating
spaces supplied with air through orifices g, as above described. The bye-pass in
this case rises from the horizontal flue just in front of the chimney stack and
leads directly into the chimney i at its upper end, dampers j being provided to
direct the furnace gases through the smoke-consumer or direct to the chimney as
may be required.
Figures 11 and 12 shew a form of apparatus having a large extent of surface,
and Figures 13 and 14 shew hit-and-miss sliding dampers with which it is to be
provided to regulate the distribution of air to each of the smoke-consuming
tubes e.
In applying the Invention to the chimney of a portable engine, as shewn in
Figure 15, the lower part of the chimney is provided with air inlet orifices as before
and is surrounded by a closed outer casing having at the lower part a lateral air
inlet g controlled by a damper j.
Figures 16, 17, and 18 shew the Invention as applied to a locomotive the smoke-
consuming apparatus constructed as before described being located at the lower
part of the chimney, partly within the smoke box and takes in air from the
outside through passages rising within the smoke box o and having their inlets
controlled by dampers at the lower part of either side of the smoke box. Instead
of the exhaust being delivered through a single blast nozzle below the chimney
as usual separate blast pipes from the two cylinders enter the sides of the
chimney with an upwardly directed inclination and at points above the smoke-
consuming apparatus.
In conclusion I would observe that the forms, details, accessories, proportions,
and dimensions of the apparatus may be varied to suit the conditions under
which the Invention is applied without however departing from the principle of
the Invention of the application of which I have merely described examples.
Having now particularly described and ascertained the nature of the said Inven-
tion and in what manner the same is to be performed I declare that what I
claim is:-
The herein described smoke-consuming apparatus constructed, combined, and
arranged substantially as herein described and illustrated in the drawings for
obtaining a perfect utilization of the combustible gases from a furnace.
Jated this 24th day of August 1897.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.