Improved Method of Ventilating Enclosed Spaces on Board Ship and elsewhere.
Year: 1893

page_text: .
Date of Application, 1st Aug., 1893
Complete Specification Left, 14th Nov., 1893-Accepted, 23rd Dec., 1893
PROVISIONAL SPECIFICATION.
Improved Method of Ventilating Enclosed Spaces on Board Ship
and elsewhere.
JAMES FORTEScue Flannery, Engineer 9, Fenchurch Street London E.C.
and STEPHEN HARDING TERRY Engineer of 17 Victoria Street Westminster S. W
do hereby declare the nature of this invention to be as follows :—~
The object of this invention is the ventilation of ships by the removal of foul air
or explosive vapour from the hold and other enclosed places either in ships or on
shore; by the application of an arrangement either of powerful exhausting, or air
plenum apparatus in connection with existing pipes usually fitted in oil ships for
the purpose of pumping out a cargo of oil; and in ordinary ships with pipes fitted
for the removal of bilge water or filling of ballast tanks.
In the case of a cargo of oil it is important that the pipes (by which the vapour
is removed) should terminate at the lowest parts of the hold; thus existing suction
pipes, or oil mains usually fitted in such ships can be utilised or others fitted if
necessary.
This apparatus preferably may be a powerful fan, air pump, steam jet water jet,
ejector or other suitable machine capable of exhausting several thousands of cubic
feet of air or explosive vapour per minute through pipes of moderate dimensions
which are usually fitted in ships and will thus obviate the necessity of expensive air
trunks for the purpose of ventilation.
Foul air or explosive vapour may be exhausted as before described or pure air
delivered under pressure through the suction pipes; for this purpose we prefer to
make cross connections between the delivery or suction side of the apparatus, we
also provide on such apparatus outlets so connected that we may deliver the foul
air or explosive vapour in any direction which may seem necessary or desirable to
meet the varying conditions of the direction of the wind or position of the vessel at
sea or in docks rivers or canals.
This optional delivery of the air is effected by means of a three way valve box
containing two doors actuated by external handles by which the flow of air may be
diverted as described.
Dated this 1st day of August 1892
J. FORTESCUE FLANNERY.
STEPHEN HARDING TERRY.
COMPLETE SPECIFICATION.
Improved Method of Ventilating Enclosed Spaces on Board Ship
and elsewhere.
JAMES FORTESCUE FLANNERY J.P. of 9 Fenchurch Street in the City of
London Consulting Engineer and Naval Architect STEPHEN HARDING TERRY,
Engineer 17, Victoria Street Westminster London 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 the ventilation of ships by the removal of foul air
or other explosive vapour from the hold and other enclosed storage spaces either in
ships or on shore by the application of an arrangement either of powerful
exhausting or air plenum apparatus in connection with pipes usually fitted in oil
ships for the purpose of pumping out a cargo of oil, & in ordinary ships with pipes
fitted for the removal of bilge water or filling of ballast tanks.
In the case of a
Price 81

page_text: 2
cargo of oil it is important that the pipes (by which the vapour is removed) should
terminate at the lowest parts of the hold; thus, existing suction pipes, oil mains or
suitable plating of bulkheads usually fitted in such ships can be utilized or others
fitted if necessary. The apparatus for removal of air or vapour, preferably may be
a powerful fan air pump, steam jet, water jet, ejector or other suitable machine
capable of exhausting several thousand cubic feet of air or explosive vapour per
minute through pipes of moderate dimensions which are usually fitted in ships and
will thus obviate the necessity of expensive air trunks for the purpose of
. ventilation.
"
Foul air or explosive vapour may be exhausted as before described, or pure air
delivered under pressure through the suction pipes: for this purpose we prefer to
make, cross connections between the delivery or suction side of the apparatus, we
also provide on such apparatus outlets so connected that we may deliver the foul
air or explosive vapour in any direction which may seem necessary or desirable to
meet the varying condition of the direction of the wind or position of the vessel at
sea or in docks rivers or canals.
I
This optional delivery of the air is effected by means of a four way valve box
containing two doors which may be actuated by external handles, by which the
flow of air may be diverted as desired.
Fig. 1. of the accompanying drawing is a longitudinal section of an oil carrying
steamship showing our arrangement of engine, fan and pipes (for exhausting the
foul air) in connection with the oil suction pipes & valves for pumping out the
cargo from the bottom of the ship.
is
Fig. 2 is a vertical section of the four way valve by which the foul vapour
delivered on either side of the ship or straight up to the atmosphere by means
of fan.
Fig. 3 is a sectional plan of a portion of the bulkheads dividing the holds of "a
ship, showing an arrangement by which the vertical angle iron stiffeners together
with suitable perforated plating may be utilized to form air ducts to or from the
lowest part of the hold.
It can
In the arrangement shown in Fig. 1, the reducing nozzle A on the suction side
of the fan is coupled by a bend to the suction pipe B which is directly connected
to the horizontal oil pipes C on each side of the longitudinal bulkhead.
easily be seen that by the provision of an additional connection or in certain cases
an additional fan, air may be blown down the pipes B and C as an alternative, or
special pipes may be provided for blowing down whilst, exhaustion of the air is
being carried on at the same time by means of the other fan & pipes already
described.
In Fig. 2, the valve box D is fitted with two valves Ę E¹ and so arranged that
either can be opened (as in the case of e¹ in the drawing) and so divert the issueing
air to the port or starboard side of the ship, or if both valves are closed, the air is
directed upwards.
In Fig. 3, the angle iron stiffeners ff on the bulkhead are connected together by
means of the plating g extending the full depth of the hold of the ship and suitably
slotted at intervals to allow of the passage of the air-to or from the hold of the
ship which plating may be moveable or permanently fixed; or the frames of the
ship together with the bulkhead stiffeners may be utilized for the same purpose as
shown at H.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed we declare that what we
claim is
1. A method of ventilating the holds of oil carrying steamships by means of an
arrangement of air exhausting and of or of air supplying apparatus in conjunction
with the arrangement of suction pipes usually fitted to such ships.
2. The provision of a suitable four way double flap valve as a means of controlling
the issuing vapour as hereinbefore described.

page_text: 3. A method of forming air ducts to or from the hold of the ship by means of
the combination of suitable plating, rivetted or otherwise attached to two or more
iron stiffeners of the bulkheads substantially as described.
4. The adaptation of the above mentioned methods to storage tanks or other-
buildings on shore.
Dated this 14th day of November 1893.
J. FORTESCUE FLANNERY.
STEPHEN HARDING TERRY.