Improvements in Apparatus for Exhausting and Condensing Smoke and Noxious Fumes, and in Purifying Tunnels.
Year: 1894

page_text: Date of Application, 16th Aug., 1894
Complete Specification Left, 16th May, 1895-Accepted, 29th June, 1895
Improvements in Apparatus for Exhausting and Condensing Smoke
and Noxious Fumes, and in Purifying Tunnels.
I, EDWARD DAVIES, of Cambridge Cottage, Wood Green, London, N., Engineer,
do hereby declare the nature of this invention to be as follows:-
According to this invention I use a fan or fans to suck the smoke and gases out
of tunnels and from steam boilers, and send them into a chamber or other suitable
place containing a water tank or tanks: The smoke and gases may be driven into
the water in the tanks and so be condensed. There will be fresh water running
into the tanks and so causing an overflow: Or the smoke and gases may be
operated upon on their way to the tank by water passing through a perforated or,
other sort of plate, or by passing the smoke and gases through tubes partly
or wholly submerged in the tanks. In some cases I may use biowing fans for
forcing fresh air into tunnels or other places. Along the tops or other suitable
places in railway tunnels I should as a rule use troughs for taking the smoke and
gases to the fans when being sucked out by them. When using water motors for
working the fans the water working them could be used for condensing.
Dated this 16th day of August 1894.
FREDERIC PRINCE,
Agent for Applicant.
Improvements in Apparatus for Exhausting and Condensing Smoke
and Noxious Fumes, and in Purifying Tunnels.
I, EDWARD DAVIES, of Cambridge Cottage, Wood Green, London, N., 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 :-
The apparatus as hereafter described for exhausting and condensing smoke and
noxious fumes, (hereinafter termed smoke), is composed of a fan or fans by which
the said smoke is drawn or sucked from steam boiler or other furnaces, tunnels or
the like, and delivered into a chamber or reservoir containing water, into which the
smoke is forced and condensed. The smoke is driven into the water to be there
condensed by say, a wheel with floats contained in the chamber, the said wheel
being revolved by suitable means, and the water thereby circulated; the tank is
provided with a water supply and an overflow. The smoke may be acted upon by
water during its passage into the wheel chamber.
My invention will be understood by the following description referring to the
drawing, whereon,
Figure 1 is a diagram sectional view of such apparatus adapted to condense the
smoke from a boiler furnace.
Figure 2 is a horizontal section on the line a, y, of Fig. 1.
Figure 3 is a vertical transverse section taken through the float wheel, and
Figure 4 refers to tunnel ventilation hereafter mentioned.

page_text: A, is the furnace tube of a boiler and A', is the flue of same leading to an
uptake A2. In the flue A', is a damper B, operated by a chain B', passing over
pulley 132, to be conveniently reached by an attendant. When the damper is closed
as shown at Fig. 1, the smoke is drawn upwards by the fan or fans C, and forced by
the tubular passage D into the chamber E. F, is a water supply pipe entering the
chamber E, and when desired, I perforate the top of the passage D, as shown at
Figs. 1 and 2 at D', whereby the supply water acts directly on the smoke. G, is a
wheel mounted on a horizontal axis passing through the chamber E, and extending
partially across same as shown at Figs. 2 and 3, and it is the floats or buckets of
this wheel, which revolving in the direction shown by the arrows Fig. 1 in close
proximity to the smoke delivery passage D, receive the smoke and immerse it into
the water, whereby it is effectually condensed. H, H, are partitions in front and
rear of the wheel, and H', is a longitudinal partition or mid feather; the
partitions H, ensuring the smoke becoming immersed while the mid feather H',
causes the water to continuously circulate in the direction of the arrows Fig. 2.
All the partitions H, H, H', are sufficiently deep to enter the water. The float
wheel G, is driven by power acting on the pulley wheel G¹, on the exterior of the
chamber E, or by other suitable means. J, is an overflow tube, K, is a residual
tube by which the sediment may be drawn off, and L, is an air outlet. It will be
understood that several fans may be employed if desired, or one fan may have two
tubes leading from the furnace; or in some cases the smoke may be passed into the
chamber E, through tubes partly or wholly immersed in the water. It is obvious
that the apparatus is eminently adapted for ventilating tunnels and the like.
employed for ventilating and condensing the smoke and fumes from railway tunnels,
I generally provide smoke conducting troughs in some convenient position, such
for example as shewn at M, N, Fig. 4, whereby the smoke is conducted to the fans,
and I arrange such troughs M, N, in such manner, that the currents of air caused
by the trains passing through the tunnels, assist in the exhausting action; thus a
train passing into a tunnel Fig. 4, would produce an air current in the same
direction as the passage of air in the trough M, and a train passing in the opposite
direction would tend to produce a current of air in the direction of the air exhaust
of passage N. Where convenient, water motors may be utilised to drive the float
wheels and the wash water therefrom employed in the water chamber E.
When
Having now particularly described and ascertained the nature of my invention
and in what manner the same is to be performed, I declare that what I claim as my
improvements in exhausting and condensing smoke and noxious fumes from furnaces,
tunnels and the like, is as follows.
1. The exhaust fan or fans C, and tube or passage D, to exhaust, and deliver
the smoke, a chamber E, containing water, into which the smoke is delivered and
condensed, a water supply F, for the tank, an over flow J, and an air outlet L,
therein, in combination with a rotating float wheel by which the smoke is immersed
in the water and thereby condensed substantially as and for the purposes set
forth.
2. The combination with the apparatus claimed by Claim 1, of the partitions H, H,
and the mid feather H', substantially as set forth.
3. The general arrangement and combination of parts composing my improved
apparatus, all constructed and acting substantially as and for the purposes described
with reference to Figs. 1, 2, and 3 of the accompanying drawings.
4. The apparatus for ventilating tunnels and the like, substantially as described,
and with reference to Fig. 4, of the accompanying drawings.
Dated this 16th day of Ma. 1905
FREDERIC PRINCE,
37 Cursitor Street, London, E.C., Agent for Applicant.
FREDERIC PRINCE,
37 Cursitor Street, London, E.C., Agent for Applicant.