Valves Placed Inside Bollers for Automatically Stopping the Escape of Water and Steam.
Year: 1893

page_text: Date of Application, 19th Jan, 1893-Accepted, 18th Mar., 1893
Valves Placed Inside Bollers for Automatically Stopping the Escape
of Water and Steam.
I, JAMES BALDWIN, of Devonshire Brass Works, Keighley, in the County of
York, Engineer, do hereby declare the nature of this invention and in what manner
the same is to be performed to be particularly described and ascer ained in and by
the following statement :-
My improvement has for its object the prevention, automatically, of the escape of
steam or water from a boiler, say through the breakage of a water gauge glass, or
when a feed valve goes wrong or requires examining, or when through any other
cause, or for any other purpose it is necessary to stop the escape of steam or water
from a boiler automatically.
With this object I place an automatic valve, made as described below, or of any;
other suitable construction, inside the boiler. When used with the water gauge of
a boiler it is connected both to the top and bottom of the gauge.
My valve I can construct with a chamber somewhat cone shaped the outlet end
of this chamber is made with a hole smaller than the diameter of the smallest end of
the cone shaped chamber. The other end is made with a screwed cap having a hole
through it. In this chamber I place a ball this ball being larger than the openings.
at either end of the chamber. The ball when in its normal position lies at the largest
end of the cone shaped chamber, as it rolls down the incline of the chamber, thus
leaving a clear space for the outflow of steam and water into the gauge glass. Should
the gauge glass break the ball is immediately forced, by the pressure within the
boiler, up the cone, and closes the outlet, thus preventing the steam or water escaping.
The water gauge valves or cocks can then be closed and a new glass placed in
position. On reopening the valves or cocks the ball will roll back again down the
cone to the larger end of the chamber.
In the case of feed water the arrangement for the automatic valve may be similar,
when the pressure of water is taken off from the outside, the pressure from the inside
of the boiler, forces the ball to the end of the chamber, and prevents the water
escaping from the boiler.
It will be seen that my automatic valve can be readily applied to other cocks or
valves, its action in all cases being practically the same.
It must be understood that I do not confine myself exclusively to the particular
form of automatic valve described above but that I can make use of any good form
of valve, to be fitted inside the boiler, that may be useful for my purpose.
In the drawings annexed hereto
Fig. 1. shows my automatic valve, as described, A., inside the boiler, and connected
to a water gauge B. C. being the front of boiler.
Fig. 2 shows a section of the valve D and the ball E. inside the conical shaped
chamber F. G. is the outlet which is smaller than the ball E. H is the sorewed
cap with hole I. in it. J. is when it is screwed on, the water gauge projecting inside.
the boiler.
if the Und

page_text: 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 :-
:-
1. The placing of an automatic valve inside boilers to prevent the escape of water
or steam.
2. The automatic ball valve, substantially as described and shown in drawings,
for fixing inside boilers, to prevent the escape of water or steam.
Dated this 19th day of January 1893.
JAMES BALDWIN.