An Improved Method of and Apparatus for the Treatment of Smoke.
Year: 1895

page_text: Date of Application, 16th May, 1895
Complete Specification Left, 17th Feb., 1896-Accepted, 28th Mar., 1896
PROVISIONAL SPECIFICATION.
An Improved Method of and Apparatus for the Treatment of
Smoke.
We, DAVID WILLIAM STONE of Tachbrook, Leamington Spa, in the County of
Warwick, Engineer and BERTRAM CHAPLIN of "The Firs," Bilton Road, Rugby,
in the County of Warwick, Gentleman, do hereby declare the nature of this
invention to be as follows:-
--
Our invention has for its objects to destroy the smoke and noxious gases emitted
from chimneys, more particularly those of factories and stationary engines,; by
condensation, thus preventing the pollution of the surrounding atmosphere.
The way in which we carry out our invention is as follows:-
We tap the flue or shaft of the furnace and insert therein one end of a pipe or
tube, the other end of which terminates in an oblong box or "stive chamber" the
uses of which will be hereinafter described. Intermediate between the shaft and
the stive chamber the pipe is enlarged at any desired spot to receive a fan the
function of which is to draw or suck the smoke from the flue and force it through
the tube into the stive chamber.
The stive chamber may be made of iron or other suitable material and has a
trough-like underside; immediately above this trough runs a conveyor for the
purpose of bringing the smoke to a condensing tank situate at that end of the stive
chamber furthest from the fan.
The condensing tank has running in its interior another revolving wheel or fan
This
constructed somewhat on the lines of the under shoot wheel of a water mill.
wheel revolves at right angles to the conveyor and receives at its underside the
smoke delivered into the tank by the conveyor. The size of the condensing tank
varies according to the sweep of the fan but its underside is always at a lower
level than the bottom of the stive chamber so that some considerable quantity of
water can lay on it without being able to flow into that chamber.
At the upper side of the wheel is fixed a perforated cap or cover of conical
shape which acts as a steam spreader; a steam pipe enters the top of the tank and
from it steam plays on to the cover for this purpose.
Above the top of the steam spreader and projecting through the upper side of
the condensing chamber are one or more pressure valves for the escape of air.
Briefly, the action of our invention is as follows:-
On the fan situated in the pipe connected to the flue being set in motion smoke
is sucked into the stive chamber and thence conveyed to the underside of the
revolving fan fixed in the condensing chamber which when in motion and with the
steam playing into the chamber from the spreader in conjunction with the agitation
of the water caused by its revolution ensures the rapid condensation of the smoke
which may then he tapped off in the form of a thick liquid to be further treated
for various purposes.
The steam playing from the spreader into the chamber prevents the escape of
the snake and the air which forces its way out may either be conveyed back to
the shaft or run through pipes into a tank of water which would effectually
condense all noxious vapours..
Below the underside of the stive chamber is placed a receiving box for cinders
or other particles entering with the smoke from the flue. Baffle plates may be

page_text: placed within the chamber to receive the cinders and force them in the direction of
the receiving box.
In lieu of the conveyor herein before referred to, a number, say three or four,
(or as many as may be desirable) of beaters or paddles might be substituted, the
object being to create a greater draught.
Dated this Sixteenth day of May 1895.
JOHN P. O'DONNELL, Fel. Chart. Inst. P.A.,
70 & 71, Palace Chambers, Westminster, London, S.W.,
Agent for the said Applicants.
An Improved Method of and Apparatus for the Treatment of
Smoke.
We, DAVID WILLIAM STONE, of 32 Princes Street, Rugby, in the County of
Warwick (late of Tachbrook, Leamington Spa, in the County of Warwick),
Engineer, and BERTRAM CHAPLIN, of "The Firs," Bilton Road, Rugby, in the
County of Warwick, Gentleman, 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 :-
Our invention has for its objects to destroy the smoke and noxious gases, fumes
or vapours emitted from chimneys, particularly those of factories (such as dye-
works, chemical works, & the like), and stationary engines, by condensation, thus
preventing the pollution of the surrounding atmosphere.
The way in which we carry out our invention is as follows :-
We tap the flue or shaft of the furnace and place therein one end of a pipe or
tube to which is fixed a fan the function of which is to draw or suck all the smoke
from the furnace into the stive chamber and which also creates the necessary
draught for making steam. The stive chamber may be made of iron, brick or other
suitable material, the bottom being hopper shaped to receive all cinders and heavier
substances that may be drawn in by the fan. One or more baffle plates may be
employed in the stive chamber to direct the cinders or heavy substances to the
hopper shaped bottom. This stive chamber is connected with a condensing tank
fixed in any convenient place.
If necessary another fan may be used to draw the smoke from the stive chamber
into the condensing tank and to create a greater draught. In the condensing tank
is placed a revolving wheel or fan constructed on somewhat the same lines as a ship's
paddle wheel, the beaters of which may be made of iron or other suitable material
and may be perforated or not as desired. This wheel revolving rapidly draws in
the smoke from the stive chamber (assisted by the second fan if necessary). The
bottom of the condensing tank is concave in shape on the same sweep as the paddle
wheel, terminating at the side farthest from the inlet of the smoke in a slope which,
with the outside wall of the condensing tank, forms a trough in which all sediment
formed by condensed smoke and other material may be deposited and run off by
means of a tap or plug to be treated for other purposes if desired. Above the
paddle wheel are one or more perforated roofs, and above these roofs at a certain
distance is a box made of iron or other material the bottom of which acts as a top
for the condensing tank, or it may be separate and connected with a pipe or tube.
At the bottom of this box are placed several valves which are so arranged as to
open at a given pressure of air, which may be conveyed back to the furnace to act
as a blower or allowed to escape.
A steam pipe of desired size enters the condensing tank at the top, passing
through the perforated rools and injecting steam through jets between the several
roofs, and steam from the end of said steam pipe plays on the paddle wheel in the

page_text: condensing tank. At any convenient place on the side of the condensing tank
above the wheel is connected a return air pipe or tube to the stive chamber, thus
allowing the smoke to circulate through the condensing tank again. If desired all
or part of the exhaust steam from the engine may deliver into the stive chamber
so as to assist in the condensation and purification of the smoke.
Doors and mud holes should be placed in the stive chamber and condensing
tank for the purpose of cleaning them out.
In order that our invention may be better understood and more readily carried
into effect, we will describe the drawing hereunto annexed, in which,
Figure 1 is a sectional elevation of our invention showing its application to a.
shaft or chimney stack.
Figure 2 is an end view, partly in section, on line A-B of Figure 1.
The same letters refer to the same parts in the two figures.
a is the shaft or chimney stack. bis the flue of the furnace which is tapped at c
to allow of the smoke being drawn by means of the fan e into the stive chamber f.
g is a baffle plate in the stive chamber for the purposes of arresting cinders and
the like; is the second fan connecting the stive chamber f with the condensing
tank and assisting in drawing the smoke into the latter. kis the revolving paddle-
wheel or fan situated in the condensing tank into which it draws or sucks the
smoke from the stive chamber. 1 are the perforated roofs above the paddle wheel
and m is the box above the condensing tank; n are the valves in the bottom of
said box, through which air enters the box at a given pressure. o is the steam
pipe entering box m at the top, passing downward through the perforated roofs l
in the condensing tank and terminating just above the paddle wheel or fan k upon
which steam from the said pipe plays. Jets p are arranged in the pipe o between
the several roofs l as before mentioned. q is the return pipe from the condensing
tank to the stive chamber. is the pipe for the escape of air from box m, said
pipe being connected to the chimney or shaft at any suitable spot as shown in
Fig. 1.
s is the concave sloping bottom of the condensing tank and s¹ is a tap or
plug for drawing off sediment and other matter which may be deposited thereon..
u is a.
t (Fig. 2) are perforations in the blades or beaters of the paddle wheel k.
door in the stive chamber for the purpose of cleaning same, and is a damper in
the chimney or shaft for preventing the passage of smoke up the chimney in the
ordinary manner, said damper being operated by means of a chain working over-
pulleys w, or other suitable means.
The arrows indicate the course taken by the smoke from the furnace through the
stive chamber to the condensing tank and back again by pipe g to the stive-
chamber.
The action of our invention is as follows:-
:-
On the fan e situated between the stive chamber fand flue 6 of the furnace (the
ordinary passage of the smoke up the chimney or shaft being cut off by means of
the damper w) being set in motion the smoke is sucked or drawn into the stive
chamber thence conveyed (by the second fan h if necessary) to the wheel k in the
condensing tank, which when also in motion in conjunction with the injections of
steam playing into the condensing tank and on to the said wheel, rapidly condenses
the smoke and drives all the sediment into the trough formed by the sloping
bottoms and the wall of the condensing tank, to be cleaned out as often as required
through the mud holes or doors.
The steam playing by means of the jets p through the perforated roofs l, prevents.
the escape of the smoke through valves n & pipe r, directing it to pipe q, and the
air which forces its way up through the roofs passes through the valves n into the
box m on the top of the condensing tank and from there is either used as a blower
or is allowed to escape by means of the pipe r up the chimney or shaft a.
In cases of excessive heat it may be desirable to have a jet of cold water playing
into the condensing tank for the purpose of keeping it cooler.
For the purpose of treating fumes and vapours from factories and workshops,
a fan would be placed at any convenient place in the wall or roof to convey all

page_text: fumes and vapours to a condensing tank, there to be treated in the same. way as
the smoke above described.
Having now particularly described the nature of our invention and in what
manner it is to be performed, we wish it to be understood that we are aware that a
beater has been used before for similar purposes; we are also aware that such
beater has operated in connection with perforated trays or roof plates. We,
therefore, wish to make no claim to these separately, but what we do claim is :-
1. In a smoke condensing apparatus, a stive chamber such as f for receiving
heavy particles in the smoke passing through fan e and also for receiving the smoke
and steam by the return pipe 9 and so on through ƒ again performing a like
operation, substantially as herein described with reference to the drawing annexed.
2. In a smoke condensing apparatus, the combination of condensing tank with
an injection of steam through pipe o with jets p intermediate between perforated
roofs, substantially as herein described and as illustrated in the accompanying
drawing.
3. A smoke condensing apparatus substantially as described and illustrated for
the purposes specified.
D
17th J..
February 1906.
JOHN P. O'DONNELL, Fel. Chart. Inst. P.A.,
70 & 71 Palace Chambers, Westminster, S.W.,
Agent for the said Applicants.