A Method of Ventilating Closed Spaces on Steam Ships, such as the Double Bottoms thereof, Engine and Boiler Casings, and the like.
Year: 1894

page_text: Date of Application, 11th May, 1894
Complete Specification Left, 12th June, 1894-Accepted, 14th July, 1894
PROVISIONAL SPECIFICATION.
A Method of Ventilating Closed Spaces on Steam Ships, such as the
Double Bottoms thereof, Engine and Boiler Casings, and the like.
I COWEN LANDRETH of 3 Bentinck Place, Newcastle-on-Tyne, Consulting
Engineer and Marine Surveyor do hereby declare the nature of this invention to
be as follows:-
This invention relates to a method of ventilating closed spaces on steam
ships, such as the double bottoms thereof (especially those beneath the engines
and boilers) engine and boiler casings, the air space of lined bulkheads, and
the like.
According to my invention I propose to ventilate such spaces by means of
induced draught caused by leading a pipe of suitable size from the space to be
ventilated up the main funnel, fresh air being admitted to the said space by a
suitable inlet pipe. A continuous current of air will thus be set up as soon as the
fires are lighted.
1004
E. P. ALEXANDER & SON,
Fels. Chartered Inst. Patent Agents,
19, Southampton Buildings, Chancery Lane, London, W.C.,
For the Applicant.
COMPLETE SPECIFICATION.
A Method of Ventilating Closed Spaces on Steam Ships, such as the
Double Bottoms thereof, Engine and Boiler Casings, and the like.
I COWEN LANDRETH of 3 Bentinck Place, Newcastle-on-Tyne, Consulting
Engineer and Marine Surveyor, 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 :-
This invention relates to a method of ventilating closed spaces on steam-ships,
such as the double bottoms thereof (especially those beneath the engines and
boilers) engine and boiler casings, the air spaces of lined bulkheads and
the like.
According to my invention, I propose to ventilate such spaces by means of
induced draught caused by leading a pipe of suitable size from the space to be
ventilated up the inside of the main funnel, fresh air being admitted to the said
space by a suitable inlet pipe. A continuous current of fresh air will thus be set
up by the heated air and gases of the funnel as soon as the fires are lighted.
In the accompanying diagram, a indicates the closed space to be ventilated, (in
this case the double bottom of a steamship beneath the boilers). bis a pipe of
suitable size leading from said space a up the inside of the main funnel c.
dis an
inlet pipe for admitting fresh air to the space a.
As soon as the fires are lighted and the funnel c becomes heated, a continuous
current of air will be set up in the space a.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
The herein described method of ventilating closed spaces on steam-ships,
consisting in providing the space to be ventilated with a pipe leading therefrom up
the inside of the main funnel, and with an inlet pipe for the admission of fresh
air, whereby a continuous current of air through said space is induced by the
heated air and gases of the funnel, substantially as described.
Dated this 12th day of June A.D. 1894.
E. P. ALEXANDER & SON,
Fels. Chartd. Inst. P.A.,
19, Southampton Buildings, Chancery Lane, London, W.C.,
For the Applicant.