Year: 1886

page_text: Date of Application, 21st Apr., 1886.
Complete Left, 21st Jan., 1887.
Complete Accepted, 22nd Feb., 1887.
I GILES, ATHERTON of the Virginia Mills, Stockport in the County of Chester Hat
Manufacturer do hereby declare the nature of this Invention to be as follows:-
The said Invention relates to the gauges which are employed to indicate the level of
the water in steam generators. In such apparatus a glass tube is connected by means
of mountings with the steam and water spaces in the generator and in the event of the
breakage of such tube the escape of the steam and water when not dangerous to life is
productive of inconvenience. To prevent such escape or to reduce it to a minimum
is the object of my invention. In each mounting which is placed in connection with
the interior of the steam generator as is usual a spindle is fitted to slide the said
spindle passing to the outside of the chamber in the mounting and being adapted to be
slid endwise and also to be turned upon its axis to grind or clear the valves a wheel
or suitable handle being fixed on the outer end of the spindle or the said outer end
may be prepared to receive a handle or hand wheel. On the said spindle are two
valves one larger in area than the other. The passage through the seating for the
larger valve leads to the glass tube. The small valve is intended to prevent escape of
steam or water through the opening through which the said spindle passes. A
cylindrical chamber is formed between the passage leading to the generator and the
passage leading to the glass tube and a flange upon the valve or the enlarged edge of
the valve is turned to such a diameter as will leave only a small clearance for the
access of steam or water to the tube. When the gauge is in use the two spindles are
drawn outward with the smaller valves upon their seatings the pressure keeping these
valves tightly closed. When the glass tube breaks the pressure acting upon the larger
areas of the larger valves which then act as pistons drives these valves to their seatings
and the further escape of steam or water is prevented. By preference a blow through
cock or valve is applied upon a branch projecting from the lower mounting.
DUTTON & FULTON,
1, St. James Square, Manchester,
Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Water Gauges for Steam Generators.
I GILES ATHERTON of the Virginia Mills Stockport in the County of Chester, Hat
Manufacturer 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 drawings
The said Invention relates to the gauges which are employed to indicate the level of
the water in steam generators. In such apparatus a glass tube is connected by means
of mountings with the steam and water spaces in the generator and in the event of the
breakage of such tube the escape of the steam and water even when not dangerous to
life is productive of inconvenience. To prevent such escape or to reduce it to a
minimum is the object of my invention. In each mounting which is placed in
connection with the interior of the steam generator as is usual is a valve which is
adapted to close the ordinary passage leading to the glass tube. So long as the tube
remains intact the said passage is kept open to a suitable degree but on the tube
breaking both passages are at once closed self-actingly.
C
h
My Invention will be most clearly understood when described with reference to the
accompanying drawing which is made for the most part in section and represents a
water gauge constructed in accordance with the invention. In the said drawing A is
the upper and B. the lower mounting a and representing the branches whereby the
gauge is connected with the steam and water spaces of the steam generator to which
the gauge is supposed to be attached in the usual manner. Each mounting is formed
with a chamber the two being marked c and d respectively the steam having access to
the chamber and the water under ordinary conditions to the chamber das will be
well understood. A portion of each chamber which is toward the glass tube e is bored
to a cylindrical form. The outer ends of the chambers are closed by means of screwed
inetal nipples which are bored to suit the spindles of the aforesaid valves
g. Each
valve is suitably formed and adapted to close the passage à leading into the glass tube
and is formed or provided with a collar or flange which is turned to such a diameter
as will leave only a small clearance for the access of steam or water to the glass tube.
The spindles of the valves are free to slide endwise in the nipples and each spindle
is formed with a collar or enlargement' which acts as a valve to prevent or check the
escape of steam or water through the opening in the nipple through which such
spindle passes and also as a stop to limit the outward movement of the spindle. Each
nipple is also provided with a.packed gland in order to check or prevent the leakage
of steam or water. When the gauge is in ordinary use the two spindles are drawn
outward until the collars i bear against the bottom of the chamber in the nipple. When
in this position the pressure acting upon the area of the spindle tends to keep the
spindle in such outward position with the collar or small valve i tightly pressed upon
its seating in the nipple thereby checking the escape of steam or water. This position
of the spindle permits of a free communication through an annular space between the

page_text: edge of the collar g' and the wall of the cylindrical chamber and through the valve
seating in the end of the passage for the flow of steam and water from the
chambers e. d into the glass tube. When the glass tube becomes broken the pressure
acting upon the larger areas of the collars g which collars in such a case act as pistons
forces the valves up to their seatings and the further escape of steam or water is
prevented. To facilitate the moving of the spindles by hand either to slide them in or
out or to rotate them for the purpose of clearing or grinding their seatings the outer
end of each spindle is furnished with a milled button K. When it is desirable to renow
the tube whilst the pressure is in the generator it is only necessary to push in both
spindles by hand when the tube may be at once removed. The gauge is provided
with a blow through valve Land in the example such valve is opened and closed by
sliding the spindle as in the cases of the valves y but if preferred an ordinary screw
valve or a pet cock or suitable valve may be used in place of the valve L or such blow
through valve may be dispensed with. I do not confine myself to the use of the small
valves nor to the exact formation of the valves y or of the piston collars or flanges g'
nor to the buttons K nor to the exact formation of the mountings A and B.
Having now particularly described and ascertained the nature of the said invention
and in what manner the same is to be performed I declare that what I claim is :-
(1) The combination of parts forming the complete water gauge substantially as
set forth and indicated hereinbefore and in the accompanying drawing.
(2) In a glass tube water gauge seating valves upon the ends of the passages leading
to the glass tube the said valves being formed or provided with parts of considerably
larger area than such passages such parts being enclosed in a chamber of restricted
arca so that the said parts act as pistons at stated times substantially as and for the
purpose set forth and indicated.
(3) In a glass tube water gauge a valve g on a sliding spindle passing to the outside
of the mounting and a circular collar flange or large base on the said valve such
part g leaving a restricted passage between itself and the wall of a chamber in the
mounting the said valve acting at times to close the passage substantially as and for
the purpose set forth and indicated.
DUTTON & FULTON,
1, St. James Square, Manchester,
Agents.