Improvements in Water Gauges for Steam Boilers.
Year: 1888

page_text: Date of Application, 24th Oct.,. 1888
Complete Specification Left, 20th July, 1889-Accepted, 24th Aug., 1889
PROVISIONAL SPECIFICATION.
Improvements in Water Gauges for Steam Boilers.
I, JOHN KING, of 13 Lower Glanmire Road Cork, in the County of Cork, Ireland,
Engineer do hereby declare the nature of this Invention to be as follows that is
to say:
My said Invention has for its object to construct water gauges for steam boilers in
an improved manner, and comprises an improved combination of details.
In carrying out my Invention I have the glass gauge tube fixed in any known
reliable manner in upper and lower metal fittings which are fixed to the boiler by
screwing into the front or end plate of the boiler, or are otherwise suitably connected
to the boiler. Each metal fitting is made with two internal compartments, an outer
one communicating with the glass tube, and an inner one communicating with the
interior of the boiler. A conical scated valve opening is made in the partition
between the two compartments, and a conical automatic valve is provided in the inner
compartment for closing the opening such valve being so arranged as, in the
event of the glass tube being broken to close by the action of the boiler pressure. For
the purpose of opening or closing the automatic valve when required, and for moving
it in either direction to insure its freedom of action, there is provided a spindle which
passes through a stuffing box and has a handle or button on its outer end for turning
it by. The spindle has one or two short levers or cams formed or fixed on its innor
end and arranged to act on the automatic valve or on a disk or collar on its spindle.
The valve spindle is guided in a socket in a plug which is screwed into an aperture
in the fitting, and which can be unscrewed for removing the valve for the purpose of
cleaning it and the valve seat.
The communication of each inner compartment with the boiler is by a conical-
seated valve opening for closing which when required a conical stop valve is provided,
being on the inner end of a screw spindle passing out through a stuffing box and
having a handle or button on its outer end. The stop valves are between the boiler
and the automatic valves so that the latter can be shut off from the boiler when it is
wished to examine them.
In connection with the lower metal fitting a blow-off or discharge valve is provided
which is also a conical valve worked by means of a screw spindle. If desired
provision may be made for the passage of a little steam past the upper automatic
valve when closed, either by a small hole through the valve or by one or more grooves
in the valve or seat.
1100
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvement in Water Gauges for Steam Boilers.
1, JOHN KING, of 13 Lower Glanmire Road, Cork, in the County of Cork, Ireland,
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 stateinent, that is to say :-
My said Invention has for its object to construct water gauges for steam boilers in
an improved manner, and comprises an improved combination of details, which is
shown on two accompanying sheets of explanatory drawings which are hereinafter
referred to in describing the combination.
Figure, 1, ou sheet, 1, of the drawings is a vertical section of the upper fittings of

page_text: a boiler water gauge as made with my improvements the section being as at right
angles to figure, 2, which is a side elevation. Figure, 3, is a vertical section as at
right angles to figure, 1, and figure, 4, is a horizontal section. Figures, 5, and 6, are
vertical sections as at right angles to each other of the lower fittings of the gauge.
these drawings the same reference letters are used to mark the same or like parts
wherever they are repeated.
In
In my improved apparatus the glass gauge tube, A, is fixed in any known reliable
nanner in the main bodies or boxes, B, C, of the upper and lower fittings which are
fixed to the boiler by screwing into the boiler end plate or by means of flanges, D,
and bolts. Each box or fitting, B, C, is made with two internal compartments, E, F,
an outer one, E, communicating with the glass tube, A, and an inner one, F,
communicating with the interior of the boiler. A valve opening is made in the
partition between the two compartments, E. F, and a conical automatic valve, G, is
provided in the inner compartment, F, for closing the opening, such valve being so
arranged as, in the event of the glass tube, A, being broken, to close by the action of
the boiler pressure. For the purpose of opening or closing the automatic valve, G,
when required, and for moving it in either direction to insure its freedom of action,
there is provided a spindle, H, which passes through a stuffing box, and has a handle or
button, J, on its outer end for turning it by. The spindle, H, has formed or fixed on
its inner end two short levers or cams, K, arranged so as when the spindle is turned
to act on the automatic valve, G, or on a disk or collar, L, on its spindle. The valve
spindle is guided in a socket in a plug, M, which is screwed into an aperture in the
box or fitting, and which can be unscrewed for removing the valve, H, for the purpose
of cleaning it and the valve seat.
. The communication of each inner compartment, F, with the boiler is by a valvo
opening, for closing which when required a conical stop valve, N, is provided, being
on the inner end of a scrow spindle, P, passing out through a stuffing box, and having
a handle or button, Q. on its outer end. The stop valves, N. are between the boiler
and the automatic valves, G, so that the latter can be shut off from the boiler when
it is wished to examine them. Blades, R, with irregular edges are attached to the
stop valves, N, and project into the passages communicating with the boiler, being
provided for clearing those passages which is effected by turning them about by
means of the valve spindles, P.
In connection with the lower box or fitting a blow-off outlet, S, is provided, the
opening in the chamber, F, leading to it being closed when required by a conical 3
valve, T, on the valve spindle, P; or a conical valvo on a separate spindle may be
provided for the purpose.
If desired, provision may be made for the passage of a little steam past the upper
automatic valve, G, when closed, either by a small hole through the valve, or by one
or more grooves in the valve or seat. The button or disk, J, on the outer end of the
spindle, H, by means of which the automatic valve, G, is manipulated when required,
is by preference made with notches in its circumference, into any one of which
notches a spring blade, U, may be allowed to enter to hold the spindle in any desired
position.
Having now particularly described and ascertained the nature of my said 4
Invention and in what manner the same is to be performed, I declare that what
I claim is :-
Combining the constructive details of water gauges for steam boilers substantially
in the improved manner herein before described and as shown in the accompanying
drawings.
Dated this Nineteenth ‚i...
1000
U
EDMUND HUNT,
Applicant's Agent.