Improvements in and connected with the Ventilation of Ships, Mines, Tunnels, Buildings and other Places.
Year: 1899

page_text: Date of Application, 7th Nov., 1899
Complete Specification Left, 7th Aug., 1900-Accepted, 8th Sept.,
1900
Improvements in and connected with the Ventilation of Ships, Mines,
Tunnels, Buildings and other Places.
We, REUBEN THOMAS PRESTON, of the Firm of J. Stone and Company, of
Deptford, in the County of Kent, Engineers, and GAVIN CARLYLE RALSTON, in
the employ of the said firm, do hereby declare the nature of this invention
to be as follows: :-
The object of this invention is to ventilate the air in the various holds or
compartments of ships, in mines, tunnels, buildings and other places whether
above ground or underground which are subject to the production or accumula-
tion of vitiated air or noxious gases.
According to our invention we provide an ejector or other similar device
through which compressed water or other liquid is supplied and this ejector is
mounted in a tank which is preferably but not necessarily enclosed and kept
supplied with water either by means of the ejector aforesaid only or by another
source of supply in addition to that passing through the ejector. The water
under pressure may be supplied from an ordinary water main where a fair
pressure is maintained or from a pump, elevated tank or the like, or in the case
of places such as mines there will be sufficient pressure in a long column of
water to obviate the necessity for any pressure being mechanically applied.
Further if the water be supplied at a great pressure, say from a hydraulic inain,
there may be a series of nozzles. In connection with the nozzle for the supply
of water, there is or are another nozzle or other nozzles for the water in the tank
and the foul air or the like and one of such nozzles may if required he utilized
for drawing in fresh air, it being understood that the nozzle or nozzles for the
water in the tank is or are below the water level therein and the nozzle or
nozzles for the foul air is or are connected by a pipe to that place from whence
the foul air is to be drawn. The foul air is, as indicated, drawn into the tank
below the level of the water which, while the apparatus is working, is kept in a
constant state of agitation, the foul air being thoroughly washed finally escaping
in a purified condition by a pipe or otherwise at any desired place and further
a supply of fresh air is constantly streaming into the mine working, ships hold
or other place to replace the vitiated air removed by the apparatus. The lank
is suitably provided with an overflow from whence the vitiated water escapes
and is passed or pumped away in any convenient manner.
Such an apparatus may either be fixed and if necessary have a system of
pipes and valves for the suction of the vitiated air from different places, such
as the various compartments in a ship or several workings in a mine and so on.
or it may be movable and, for example, have wheels so as to be run from one
place to another and the supply and discharge of water and the discharge of
vitiated air may be provided for by means of flexible or other piping.

page_text: Improvements in and connected with the Ventilation of Ships, Mines,
Tunnels, Buildings and other Places.
We, REUDEN THOMAS PRESTON, of the Firm of J. Stone and Company, of
Deptford, in the County of Kent, Engineers, and GAVIN CARLYLE RALSTON, in
the employ of the said firm, 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 object of this invention is to ventilate the air in the various holds or
compartments of ships, in mines, tunnels, buildings and other places whether
above ground or underground which are subject to the production or accumula-
tion of vitiated air or noxious gases.
According to our invention we provide ejector or other similar device
through which compressed water or other liquid is supplied and this ejector is
mounted in a tank which is preferably but not necessarily enclosed and kept
supplied with water either by means of the ejector aforesaid only or by another
Fource of supply in addition to that passing through the ejector. The water
under pressure may be supplied from an ordinary water main where a fair
pressure is maintained or from a pump, elevated tank or the like, or in the case
of places such as mines there will be sufficient pressure in a long column of
water to obviate the necessity for any pressure being mechanically applied.
Further if the water be supplied at a great pressure, say from a hydraulic main,
there may be a sorics of nozzles. In connection with the nozzle for the supply
of water there is or are another nozzle or other nozzles for the water in the tank
and the foul air or the like and one of such nozzles may if required be utilized
for drawing in fresh air it being understood that the nozzle or nozzles for the
water in the tank is or are below the water level therein and the nozzle or
nozzles for the foul air is or are connected by a pipe to that place from whence
the foul air is to be drawn. The foul air is as indicated drawn into the tank
below the level of the water which, while the apparatus is working, is kept in a
constant state of agitation the foul air being thoroughly washed finally escaping
in a purified condition by a pipe or otherwise at any desired place and further
a supply of fresh air is constantly streaming into the mine working ships hold
or other place to replace the vitiated air removed by the apparatus. The tank
is suitably provided with an overflow from whence the vitiated water escapes
and is passed or pumped away in any convenient manner.
Such an apparatus may either be fixed and if necessary have a system of
pipes and valves for the suction of the vitiated air from different places, such
as the various compartments in a ship or several workings in a mine and so on,
or it may be movable and, for example, have wheels so as to be run from one
place to another and the supply and discharge of water and the discharge of
vitiated air may be provided for by means of flexible or other piping.
Figure 1 of the accompanying drawings is a sectional elevation of one form
of apparatus for ventilating which we illustrate as an example.
Figure 2 is a plan section of same.
Figure 3 is a diagrammatic plan of a ship showing our invention applied
thereto.
Figure 4 is a vertical section of a mine ventilated according to our invention
Figure 5 is a plan thereof.
and
Referring to Figures 1 and 2 the apparatus is mounted in an enclosed tank L

page_text: and provided with two pairs of ejectors marked X X X and X³, each one of which
has as shown in Figure 1 an adjustable nozzle B and two fixed nozzles or cones C
and D. Compressed water or other liquid is supplied to these ejector devices
by way of the cocks A A and branch pipes A' A¹. The water under pressure may
be supplied from an ordinary water main or other convenient source. In connec-
tion with the nozzle B for the supply of water there are as aforesaid two other
nozzles C and D having openings C¹ and C for the water in the tank and
connection with the vitiated air by means of pipe F and branch pipes F and F,
it being understood that the nozzles C and D for the water in the tank L are
below the water level therein. The foul air is as indicated drawn into the
tank below the level of the water which, while the apparatus is working, is kept
in a constant state of agitation, the foul air being thoroughly washed finally
escaping in a purified condition together with the waste water by an overflow
pipe H.
Such apparatus of which two are shown indicated by the letter L in Figure 3
are fixed for example in the engine room of a ship and connected to the suctions
in the bilges marked Z in the various compartments by a system of pipes and
by valves marked Y to each hold so that when a hold or holds is or are freed
from water the bilge pumps W are disconnected from that particular bold or
holds and the ventilating apparatus is connected to the said hold or holds to
permit of the passage of the foul air to the purifying apparatus Ļ the latter
being worked entirely by water under pressure from any convenient source.
It is also evident that other systems of pipes such as for instance those to the
ballast tanks may be utilised in carrying out our invention.
Referring to Figures 4 and 5 which illustrate two workings and the shaft of a
mine, the apparatus marked L is in both cases provided with wheels so as to be
run from one place to another.
The vitiated air is drawn in by the pipe F, the supply of water is provided
for by flexible or other piping A' the discharge of superfluous water by the
trap and the exit of the vitiated air by the pipe II to the outside of the
shaft.
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:-
1. The ventilation of ships mines tunnels, buildings and other places consist-
ing in drawing the foul air into a tank by means of a liquid such as water unler
pressure intimately mixing the said foul air or gas with the water and dis-
charging the air and water together substantially as set forth.
2. Ventilating apparatus consisting of a tank having an inlet for foul air or
gas an ejector device worked by a liquid under pressure such as water for forcing
or inducing the foul air from the said inlet to a point below the water level in
the tank and for causing the foul air to be intimately mixed with the water and
a discharge pipe for allowing of the exit of the air and water substantially as
set forth.
3. The constructions of apparatus shown on the drawings.
Dated this Sovanth day of sw1000
day of August 1000.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.