Improvement in Belleville Boilers Used in War Vessels.
Year: 1895

page_text: Date of Application, 11th Nov., 1895
Complete Specification Left, 30th July, 1896-Accepted, 12th Sept., 1898
PROVISIONAL SPECIFICATION:
Improvement in Belleville Boilers Used in War Vessels.
I ALGERNON SIDNEY FIELD of 110, Westminster Bridge Road, Lambeth, in
the County of London, Engineer do hereby declare the nature of this invention
to be as follows:-
=
I insert in the box connecting the top tube of each element with the steam
receiver a valve commonly known by engineers as a non-return valve, and as
hereafter described (the position of this valve is shown on Figure one at A)
and also I insert between each connecting box of the lowest tube in the elements
and the horizontal cross tube called the feed collector another non-return valve as
hereafter desoribed (the position of this figure is shown on Figure one at B).
In the event of any of the tubes of any of the elements being damaged by shot
or shell or by debris striking them, then the aforesaid valve at A would be closed
by the action of the escaping steam and water and so likewise would the valves
at B in the elements which remain undamaged.
Thus the rush of steam and water from the other boilers and elements would be
checked and so reduce the likelihood of injury to human life to a minimum.
The nature of the aforesaid valve (as placed at A on Figure one) is shown on
Figure two and is as follows:-
(a) is a flut valve hinged on a loose hinge (d) so that it is quite free to rest on
its seating.
(c) is a ring of asbestos composition or suitable material to make a good joint
when the valve is resting on its seating.
(b) is a thin metallic plate perforated with holes so that when the steam and
water rushes in the direction shown by the small arrows the valve (a) is over-
balanced from its normal position as shown by dotted lines to the position as shown
in full lines and checks the rush of steam and water.
The nature of the aforesaid valve (as placed at. B in Figure one) is shown in
Figure three and is as follows:-
(e) is a coned valve with stop ().and light brass spring (g).
(f) is the valve seating and guide.
On the pressure being greater on the top of the valve will cause it to close.
These valves in the elements (shown at A and B Figure one) need not be placed
in the boilers until the vessel is going into action.
Dated this the 9th day of November One thousand eight hundred and
Dinety-five.
Improvement in Belleville Boilers Used in War Vessels.
I, ALGERNON SIDNEY FIELD, of 110 Westminster Bridge Road, Lambeth in
the County of London, 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:-
My invention relates to means of providing against injury to human life

page_text: resulting from damage to any one of the elements of a Belleville boiler, as I
shall describe referring to the drawings accompanying my Provisional Specification.
I insert in the box connecting the top tube of each element with the steam
receiver a valve commonly known by engineers as a non-return valve, and as
hereafter described (the position of this valve is shewn on Fig. 1 at A) and also I
insert between each connecting box of the lowest tubo in each of the elements and
the horizontal cross tube called the feed collector another non-return valve as
hereafter described (the position of this valvo is shewn on Fig. 1 at B).
In the event of any of the tubes of an element being damaged by shot or shell
or otherwise, then the aforesaid valves at A and B would be closed by the internal
pressure preventing escape of steam and water from the other sections or ports of
'the boiler.
The valve placed at A Fig. 1 is preferably that shewn on Fig. 2 consisting of a
flap a hinged freely at d and having fixed at its edge a ring e of asbestos
composition or other suitable material to make a sound joint when the valve is
seated.
To the front of the valve I fix a perforated metallic plate b so that when steam
or water tends to rush in the direction shewn by the arrows the pressure on the
plate b ensures the closing of the valve from its normal position which is shewn by
dotted lines..
The valve placed at B Fig. 1 is shewn in Fig. 3 and is as follows:-
A coned check valve e with stop i and light spring g urging it to open.
Jis the valve seating and guide.
Should one of the sections give way its valve placed at B would open relieving
the pressure in the horizontal cross tube or feed collector on which all the valves B
of the other sections of the boiler would close.
The valves at A and B may under ordinary circumstances be removed, and only
put into their places when the vessel is about to go into action.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
In combination with each section of a Belleville boiler a non-return valve
situated at the communication of the section with the steam receiver, and a check
valve situated at the communication of the section with the feed collector,
substantially as and for the purposes set forth.
Dated this 28th day of July 1896.
ABEL & IMRAY,
Agents for the Applicant..