Petroleum and other Volatile Liquids.
Year: 1888

page_text: Date of Application, 9th Jan., 1888
Complete Specification Left, 2nd Nov., 1888
Complete Specification Accepted, 7th Dec., 1888
Petroleum and other Volatile Liquids.
I, JOHN PRICE, of 6 Osborne Villas in the City and County of Newcastle upon
Tyne, Civil Engineer; do hereby declare the nature of this invention to be as
follows:
-
The object of this Invention is to avoid the danger which arises from the retention
in the holds of Steam, and other Vessels, of the vapours given off by Petroleum and
like liquids contained in air-tight tanks fitted to such holds. The danger sought to
be removed arises after the closed tanks have been discharged, and when an inspection
of the tanks is made, preparatory to repairing and refilling the same.
According to this invention, each tank is fitted with a simple means for effecting
its ventilation, thus -
I provide at say the fore end of each tank a shaft to serve as a down draught shaft
for the passage of air into the tank, utilising, for that purpose, the ordinary expansion
chamber, which, when the man-hole is removed, will bring the tank into communi-
cation with the atmosphere; and at, say, the after end of each tank, I fit a ventilator
to serve as an upcast shaft for the emission of gas or air from the said tank, the
ventilator shaft, for this purpose, being prolonged to within a suitable distance of the
bottom of the vessel.
The means by which the current downwards in the downcast shaft, and upwards in
the upcast shaft, is proposed to be induced, is by the insertion of a steam jet in the
upcast shaft or ventilator, at or about the level of the main deck, or other suitable
level, pointing upwards to the atmosphere.
When steam is admitted to this jet, a partial vacuum will be produced in the upcast
shaft, and a downward current of air will be drawn from the downcast shaft, or opened
expansion chamber, into and through the tank, which current will, in entering the
upcast shaft, draw with it the gaseous vapours contained in the tank, and discharge
the same into the oven air.

page_text: In place of steam, I may use a jet of compressed air for creating and maintaining
ventilation through the tank for removing the vapours therefrom, or an exhaust fan
may, if desired, be employed.
D L
0:1
1000
NEWTON & SON,
Agents for the Applicant.
Petroleum and other Volatile Liquids.
I JOHN PRICE of 6 Osborne Villas in the City and County of Newcastle-upon-
Tyne, Civil 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 object of this invention is to avoid the danger which arises from the retention
in the holds of steam and other vessels, of the vapours given off by petroleum and
like liquids contained in air-tight tanks fitted to such holds. The danger sought to
be removed arises after the closed tanks have been discharged, and when an inspection
of the tanks is made preparatory to repairing and refilling the same.
According to this invention, each tank is fitted with a simple means for effecting
the ventilation, thus :-
I provide at, say, the fore end of each tank a shaft to serve as a down draught shaft
for the passage of air into the tank, utilizing for that purpose the ordinary expansion
chamber, which, when the man-hole cover is removed, will bring the tank into
communication with the atmosphere, and at, say, the after end of each tank, I fit a
ventilator to serve as an upcast shaft for the emission of gas or air from the said tank,
the ventilator shaft for this purpose being prolonged to within a suitable distance of.
the bottom of the vessel.
The means by which the current downwards into, and upwards from the tanks, is
proposed to be induced, is by the insertion of a steam jet in the upcast shaft or
ventilator at or about the level of the main deck, or other suitable level, pointing
upwards to the atmosphere.
When steam is admitted to this jet, a partial vacuum will be produced in the upeast
shaft, and a downward current of air will be drawn from the downcast shaft, or opened
expansion chamber, into and through the tank, which current will, in entering the
upcast shaft, draw with it the gaseous vapours contained in the tank, and discharge
the sanie into the open air.

page_text: In the accompanying drawing
Fig. 1 shows, in diagram plan, my invention as applied to a steam vessel fitted with
air tight tanks for carrying petroleum oil; and
Fig. 2 is a partial longitudinal section of the vessel taken in the line 1, 2 of
Fig. 1.
In these Figures, A A A represent a series of air tight tanks situate on opposite
sides of a central bulkhead. B B are the expansion chambers of the several tanks,
closed, as usual, by a manhole cover. CCC are upcast shafts consisting each of a
pipe extending down to near the bottom of the tank, to which it is fitted, and extending
up through the deck D, above which it is furnished with a cowl c. E is a steam pipe
extending from the steam boilers E' along the line of tanks, and communicating, by
means of branch pipes e, with the several upcast shafts C. This communication
is effected through stop cocks e', to which are fitted jet pipes e within the upeast
shafts.
By this arrangement, jets of steam may be admitted to any or all of the pipes Cat
pleasure, and the man-hole covers being removed from the expansion chambers B, air
will then flow into the tanks and circulate through them, as indicated by the
arrows in Fig. 2, carrying off into the atmosphere the vapours contained in the
empty tanks.
In place of steam, I may use jets of compressed air for creating and maintaining
ventilation through the tanks and removing the vapours therefrom, or an exhaust
fan may, if desired, be employed in connection with the arrangement of pipes E, e,
the pipe C being in such case closed against the external air.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be employed, I declare that what I
claim is :-
The means above described for facilitating the ventilation of tanks constructed for
carrying petroleum and other volatile liquids.