Improvements in Safety Arrangements for Kitchen and other Boilers.
Year: 1894

page_text: Date of Application, 7th Feb., 1894
Complete Specification Left, 7th Nov., 1894-Accepted, 8th Dec., 1894
PROVISIONAL SPECIFICATION.
Improvements in Safety Arrangements for Kitchen and other
Boilers.
I, JAMES DIXON, of 58 Oxford Road, Gunnersbury, in the County of Middlesex,
do hereby declare the nature of this invention to be as follows:-
My invention relates more especially to safety valves for hot water boilers
in kitchens used for the supply of hot water at different heights, such safety valve
consisting of a tube or nozzle screwed or fixed into the boiler, and being provided
with a transverse diaphragm of thin but sufficiently strong material, such as mica,
the strength of which is so proportioned that when the highest determined pressure
has been reached by the steam and hot water in the boiler, it fractures the mica,
and the hot water and steam can then escape through one or more openings in the
upper part of the apparatus.
An objection to this arrangement is, when the safety valve is applied to kitchen
boilers, that when the mica diaphragm becomes fractured by excess of pressure, the
hot water in the boiler and pipes is discharged through openings until the boiler is
practically emptied, thus causing great inconvenience and damage in the kitchen
where the boiler is situated.
By my present invention instead of apertures for the escape of water and steam,
I connect to the socket fixed to the boiler as described, above the diaphragm,
a union joint, provided with a pipe of sufficient size the outer end of which can be
carried to any convenient position where the discharge of steam and hot water
through it will cause neither inconvenience nor damage.
It is evident that the pipe can be readily taken in any direction and to any
distance, and whilst inexpensive and easily fixed it avoids the possible inconvenience
described which has hitherto prevented such safety valves from being largely
used.
The mica or other safety diaphragm is held between the two parts of the socket,
between rings of lead and cardboard, or other material of which a sufficiently tight
joint can be made.
.
COMPLETE SPECIFICATION.
Improvements in Safety Arrangements for Kitchen and other
Boilers.
I, JAMES DIXON, of 58, Oxford Road, Gunnersbury, in the County of Middlesex,
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 and accompanying drawing, that is to say:-
The accompanying drawing is in illustration of my invention, Figure 1 being a side
view, and Figure 2 a vertical section, of the apparatus.
My present invention relates more especially to safety valves or arrangements for
hot water boilers in kitchens, used for the supply of hot water at different heights,
such safety valve consisting (as shewn in the figures) of a tube or nozzle a screwed

page_text: or fixed into the boiler, and provided with a transverse diaphragm b of thin but
sufficiently strong material, such as mica, the strength of which is so proportioned
that when the highest determined pressure has been reached by the steam and hot
water in the boiler, the pressure fractures the mica, and the hot water and steam
can then escape through one or more openings in the upper part of the
apparatus.
An objection to arrangements of this kind is, when the safety valve is applied to
kitchen boilers, that when the mica diaphragm becomes fractured by excess of
pressure the hot water in the boiler and pipes is discharged through openings into
the kitchen, until the boiler is practically emptied, thus causing great inconvenience
and damage in the kitchen where the boiler is situated.
By my present invention, instead of apertures for the escape of water and steam
as just described, I connect to the socket a fixed to the boiler, above the
diaphragm b, a union joint c, provided with a pipe d of sufficient size, the outer end
of which can be carried to any convenient position, where the discharge of steam
and hot water through it will cause neither inconvenience nor damage.
It is evident that the pipe d can be readily taken in any direction and to any
distance, and whilst inexpensive and easily fixed, it avoids the possible inconvenience
described which has hitherto prevented such safety valves or arrangements from
being largely used.
The mica or other safety diaphragm b is held between the two parts of the
socket at e, between rings of lead and cardboard, or other material by which
a sufficiently tight joint can be made.
I do not confine myself to the precise details of form, proportion, and materials,
which may be varied more or less as may be found desirable in different situations,
but,
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
In safety arrangements for kitchen and other boilers the combination with
a device in which a thin plate of mica or other material is so arranged as to
be fractured by the pressure in the boiler when such pressure exceeds a certain
limit, of a separate pipe by which the escaping steam and water are conveyed away
to any desired position, substantially as described and illustrated.
Dated this 7th day of November 1894.
EDWARDS & Co.,
65 and 66, Chancery Lane, London, Agents for the Applicant.