Improvements in or applicable to Water Gauges for Steam Boilers and other purposes.
Year: 1899

page_text: Improvements in or applicable to Water Gauges for Steam Boilers
and other purposes.
I, WILLIAM HENRY TATE, of 12, Vauxhall Road, Liverpool, in the County of
Lancaster, Gauge Glass Maker, do hereby declare the nature of this invention
to be as follows:-
This invention relates to certain improvements in or applicable to water gauges
for steam boilers and other purposes, and has for its object to prevent damage in
case of fracture of the glass and in other ways to be superior to the water gauges
hitherto in use.
Hitherto valves have been provided above and below the gauge glass so that
when the gauge glass is broken these valves are instantly lifted to their seats
by the force of the escaping steam, and thus quickly shut it off. These valves
however are liable to get clogged and choked and so prevent the valves from
working properly at the time when they are required. My invention avoids
this defect.
In carrying my invention into effect, I surround the water gauge glass with a
steam tight casing leaving a suitable space between, so as to constitute a steam-
tight chamber. This chamber which is preferably of metal has a glass window
in front, through which the height of the water in the gauge glass can be observed.
If desired however, the entire casing, or the greater part of it, may be of glass.
At the back of this chamber or at other suitable part, and communicating
therewith, there is provided a small cylinder with a piston working therein. This
piston has a piston rod, the other end of which projects through the end of the
cylinder to the outside and is there secured to a double armed frame or its equi-
valent which is coupled to the handles of the valves of the top and bottom
mounts, which connect the gauge glass with the boiler. If now the gauge glass
is broken, the rush of steam and boiling water will instantly fill the steam-tight
chamber surrounding the gauge glass, and operate the piston, pushing the piston
rod outwards and thereby instantly closing the valves and so shut off the steam.
It will thus be seen that the apparatus is put automatically into operation when
the gauge glass is broken, and therefore does not in any way interfere with
the blowing through to clean the working parts, nor does it in any way prevent
the valves in the upper and lower mounts being operated by hand when required.
T
.
درمد
1
1000
WM. P. THOMPSON & Co.,
.
Of 6, Lord Street, Liverpool, Patent Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in or applicable to Water Gauges for Steam Boilers
and other purposes.
I, WILLIAM HENRY TATE, of 12, Vauxhall Road, Liverpool, in the County of
Lancaster, Gauge Glass Maker, 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:--
This invention relates to certain improvements in or applicable to water gauges
for steam boilers and other purposes, and has for its object to prevent damage in
case of fracture of the glass and in other ways to be superior to the water gauges
hitherto in use..
The invention will be understood from the following description, reference
being had to the accompanying drawings, in which,
Figure 1 is a front elevation of a water gauge constructed in accordance with
my invention. The glass of the steam tight chamber however is shown in
section.
Figure 2 a plan of the cylinder and upper metallic mounting which is adapted
to receive the glass window of the steam tight chamber which surrounds the
gauge glass.
.
Figure 3 a plan of the lower metallic mounting.
Figure 4 an edge view thereof.
Hitherto valves have been provided above and below the gauge glass so that
when the gauge glass is broken- these valves are instantly lifted to their seats
by the force of the escaping steam, and thus quickly shut it off. These valves
however are liable to get closed and choked and so prevent the valves from work-
ing properly at the time when they are required. My invention avoids this
defect.
By my invention, I surround the water gauge glass A with a steam tight
chamber B formed of a glass window or pane C, semi-circular, square or other
shape, and metallic backing D. This glass is mounted in grooves d in the
metallic mountings D₁ at top and bottom. The greater part therefore of this
steam tight chamber is of glass, through which the height of the water in the
gauge glass, can be observed, but of course a much smaller portion may be of
glass if preferred. At the back of this chamber or in any other suitable part
communicating therewith, there is provided a small cylinder E with a piston F
working therein. This piston has a piston rod G, the other end of which projects
through the end of the cylinder to the outside, and there is secured to a double
armed frame H or its equivalent, which is coupled to the handles I of the valves J
of the top and bottom mounts K which connect the gauge glass A with the boiler.
If now the gauge glass A is broken the rush of steam and boiling water will
instantly fill the steam tight chamber B surrounding the gauge glass A. and
operate the piston F, pushing the piston rod G outwards, and thereby instantly
closing the valves J and so shut off the steam. It will thus be seen that the
apparatus is put automatically into operation when the gauge glass is broken,
and therefore does not in any way interfere with the blowing through to clean
the working parts, nor does it in any way prevent the valves in the upper and
lower mounts being operated by hand when required. L is the blow through
valve.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what I
claim is:-
• 1. The improvement in water canoes which consists in eueraunding the

page_text: glass thereof with a casing forming a steam tight chamber having a glass window
through which the height of the water in the gauge glass can be observed in
combination with a cylinder communicating with said chamber, a piston and
rod working in said cylinder, said piston rod being coupled to the handles of the
valves of the top and bottom mounts, in such a manner that if the gauge glass
breaks, the rush of steam and water filling the chamber will instantly operate
the piston, and close the valves, thus shutting off the steam, substantially as
described.
2. In water gauges for steam boilers and other purposes, the apparatus for
instantly shutting off the escaping steam and water when the gauge glass breaks,
constructed, arranged and operating substantially as herein before described
with reference to and shown in the drawings annexed.
Dated this 16th day of February 1900.
WM. P. THOMPSON & Co.,
Patent Agents, of Liverpool, Manchester, Birmingham & London.