IMPROVEMENTS IN APPARATUS FOR PURIFYING SMOKE FROM STEAM-BOILER OR OTHER FURNACES "
Year: 1883

page_text: LETTERS PATENT to John Griffiths, of Weobley, in the County of Hereford,
for an Invention of "IMPROVEMENTS IN APPARATUS FOR PURIFYING SMOKE
FROM STEAM-BOILER OR OTHER FURNACES
"
PROVISIONAL SPECIFICATION left by the said John Griffiths at the Office
of the Commissioners of Patents on the 28th September 1883.
JOHN GRIFFITHS, of Weobley, in the county of Hereford.
" IMPROVEMENTS IN
APPARATUS FOR PURIFYING SMOKE FROM STEAM-BOILER OR OTHER FURNACES
"
My invention relates to apparatus for purifying smoke from steam-boiler or
other furnaces.
According to one part of my said invention I provide one or more tubes or flues,
which may, if desired, be made to pass horizontally through the lower part of a
chimney or funnel and which extend upward and are bent so that they enter the
chimney or funnel. In the said tube or in each of the said tubes I arrange a
number of plates fixed alternately on opposite sides of the tube, One or more pipes
are connected with the tube, and water is supplied to the said pipe or pipes in any
suitable manner so that a jet or jets of water will be directed into the tube above
the top plate or at any desired point in the said tube. This water will drop from
the edge of the top plate on to the second plate and so on until it reaches the lower
part of the tube which is inclined from each side downward towards the centre
and is provided with a channel or gutter for draining off the water
The arrangement of the said plates may be somewhat modified or the said plates
may be dispensed with if desired, and the water may be introduced into the tube
or tubes in any suitable manner
I sometimes apply my said invention to the funnel of a steamship in the
following manner, that is to say :-I divide the funnel into two branches which
again unite a short distance above the point of division. These branches or loops
form chambers through which the smoke from the funnel passes and again enters
the funnel. In each of these chambers I provide one or more perforated pipes
preferably arranged horizontally. The said pipe or pipes are connected with any
suitable apparatus whereby they can be supplied with water under pressure, which

page_text: will be caused to issue from the pipe or pipes in a series of small jets: I sometimes
provide a plate or plates for receiving the water which drops from the said pipe
or pipes, and which will then drop from the plate or plates into a channel or outlet
from which the water can then escape,
In some cases I provide a horizontal fan in the funnel above the said chambers,
and mount the said fan on a vertical shaft passing through the space between the
said chambers and carried in suitable bearings. This shaft carries a bevel gear-
wheel which gears with another bevel gear-wheel mounted on a shaft driven by
any suitable motor.
My improved apparatus may be modified in various manners and the fan may be
rotated by any suitable means.
'
•
The said apparatus is applicable to different kinds of furnaces such as those used
for industrial purposes or the furnaces or fire-places used for domestic purposes.
I sometimes enclose the said side flue when constructed of iron or other metal
in a second chamber or tube and utilize the surplus heat of the said flue for heating
or drying purposes.
I sometimes provide means for producing an artificial draught in the chimney or
funnel..

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Griffiths in the Patent Office on the 28th March 1884.
John Griffiths, of Weobley, in the County of Hereford, IMPROVEMENTS IN
"
APPARATUS FOR PURIFYING SMOKE FROM STEAM-BOILER OR OTHER FURNACES
"
My invention relates to improved apparatus for purifying smoke, produced by
the combustion of coal or other fuel, by extracting the soot and other solid particles
therefrom and also the greater portion of the gaseous products of combustion so
injurious to animal and vegetable life.
My improved apparatus is constructed and used in such a manner that the smoke
will pass through water ejected froin one or more perforated pipes, in the form of
spray, or in a series of small jets, so that the soot and other solid particles of the
smoke will be carried downwards by the water, whilst the greater portion of the
gaseous products of combustion so injurious to animal and vegetable life. are
arrested and retained by the water.
In the accompanying drawing I have shown how my said invention may be
conveniently and advantageously carried into practice
Figure 1 is a vertical central section showing my invention in connection with a
tall chimney or stack.
Figure 2 is a vertical central section showing a modification thereof.
Figure 3 is a vertical central section, and
Figure 4 a horizontal section, showing my invention in connection with the
funnel of a steam-ship
•
In Figure 1,,a is a tube or flue which extends horizontally through the lower
part of the chinney or stack b, from a steam-boiler or other furnace. A portion of
this tube extends upward and enters tho chimney or stack b as shown. c c are
pipes to which water is supplied under pressure in any suitable manner, and which
are perforated so that the water will be ejected obliquely therefrom either in the
form of spray or in a series of small jets. The water is ejected in the directions
shown at a, a, and will fall into the lower part of the tube at a³. A plate or
projecting rib d is sometimes fixed in the flue a to direct the water into the part a³
and prevent its flowing into the horizontal part of the said flue. And a similar plate
or rib is, in some cases, provided upon the opposite side of the flue a. The part a³
of the tube or flue a is inclined from each side downward towards the central
channel or gutter e, this form being advantageous for draining off the water and
any soot or solid particles that may be mixed therewith. The arrows indicate the
direction of the smoke, it will therefore be seen that, before the products of
combustion can escape up the chimney or stack, they must pass several times
through water in the form of spray, which will eliminate from them the soot and
other solid particles, whilst much of the mineral matter arrested by the water
enters into chemical combination with the gases absorbed by the water.
In Figure 2 I have shown a modification of my invention wherein I employ a
single pipe c perforated in such a manner that the water will be ejected obliquely
therefrom in the form of spray or in a series of small jets, as shown at a', and the
smoke, which travels in the direction indicated by the arrows, must pass through
the water before it can escape into the atmosphere.
Figure 3 and 4 show my invention in connection with the funnel of a steam-
ship. B is the funnel, which is divided into two branches B¹, B². These branches
again unite a short distance above the point of division as shown, and form flues
through which the smoke from the furnace will pass. In each of these flues I
provide a pipe c to which water is supplied under pressure in any suitable manner

page_text: through the pipe c¹. The pipes c are perforated so that the water will be ejected
obliquely therefrom either in the form of spray or in a series of small jets, as
shown at a, a, and will fall into the lower part of the tube at a³ and escape
through the outlet pipe f together with any soot or other matter which it has
eliminated from the smoke
In some cases I provide a horizontal fan C in the funnel B above the said tubes
or flues B1, B2, and I mount the said fan on a vertical shaft D passing through the
space between the said tubes or flues and carried in suitable bearings. This shaft
carries a bevel pinion E which gears with another bevel pinion F mounted on a
shaft G driven by any suitable motor. This fan serves to increase tlie draught
in the funnel.
I sometimes dispense with the flues or tubes and arrange one or more perforated
water-pipes and means for carrying away the water in the manner above described
in an ordinary chimney or stack, or in the funnel of a steam-ship.
My improved apparatus may be modified to suit different kinds of furnaces for
either industrial or domestic purposes.
I sometimes enclose the vertical part of the flue, when constructed of iron or
other metal, in a chamber or tube and utilize the surplus heat from the said flue
for heating or drying purposes.
Having thus fully described my said invention and the manner of performing
the same I wish it understood that I claim.
The above described improvements applied to a chimney or to one or more tubes
or flues employed in combination therewith, and consisting in the employment of
one or more perforated pipes so arranged that the smoke will pass through water
ejected from the said pipe or pipes in the form of spray or in a series of small
jets, substantially as, and for the purpose, set forth.
In Witness whereof I the said John Griffiths have hereunto set my hand and
seal this Twenty sixth day of March in the year of Our Lord One thousand eight
hundred and eighty four.
זוח.
IMCOתחזתם
1