Improvements in Water Gauges for Steam and other Boilers.
Year: 1888

page_text: Date of Application, 18th Oct., 1888
Complete Specification Left, 19th July,
4000
Accepted,
24th
Aug
1080
=
κυπριοιο ομονοαιιι
PROVISIONAL SPECIFICATION.
Improvements in Water Gauges for Steam and other Boilers.
We JOHN DEWRANCE and GEORGE HENRY WALL both of 158 Great Dover Street,
Lambeth, in the County of Surrey, Engineers, do hereby declare the nature of this
invention to be as follows:-
In Water Gauges fitted with Automatic Valves to close when the glass breaks,
it is desirable that the automatic Valve in the lower Arm shall be supported
immediately below the glass as far as possible from where the sediment or incrustation
settles.
It is also desirable that the automatic Valve shall be capable of being taken out
for inspection and cleaning without taking out the glass or the bottom Cock, and
that the passage into the boiler shall be unobstructed and capable of being readily
cleared with a rod in the usual way.
Our Invention consists in introducing the Automatic Valve from the front of the
Water Gauge Arm, and complies with all the foregoing conditions.
We form the Valve support on a disc which, with the Valve is inserted into the
front of the arm of the Water Gauge, the disc filling up the opening, an asbestos
washer is then laid againt the disc and is compressed and made steam tight by a screw
plug, the dise has a handle for the convenience of pulling it out or may be so
attached that it may be pulled out with the screw plug.
The support may be in one piece with a bolted cover or with the screw plug
itself, or the support may be cast in the chamber of the arm of the Water Gauge
and a ball or other shaped Valve placed in and kept in its proper position by the screw
plug, in any case when the Valve is taken out the opening is available for clearing
out the passage into the boiler by a rod as it is in the same position as the usual
clearing screw.
1
1711
Sandalia 1000
JOHN DEWRANCE:
GEORGE HENRY WALL.
COMPLETE SPECIFICATION.
Improvements in Water Gauges for Steam and other Boilers.
We JOHN DEWRANCE and GEORGE HENRY WALL both of 158 Great Dover Street
Lambeth in the County of Surrey, Engineers, 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:-
In Water gauges fitted with automatic valves to close when the glass breaks
it is desirable that the automatic valve in the lower arm shall be supported
immediately below the glass as far as possible from where the sediment or incrus-
tation settles.
It is also desirable that the automatic valve shall be capable of being taken out
the bottom cock,
for inspection and cleaning without taking out the glass or
and that the passage into the boiler shell be unobstructed and capable of being readily
cleared with a rod in the usual way.
Our invention consists in introducing the automatic valve from the front of the
Watergauge arm, and complies with all the foregoing conditions.
We form the valve support on a disc which with the valve is inserted into the front
of the arni of the Watergauge the disc filling up the opening, an asbestos washer is
then laid against the disc and is compressed and made steam tight by a screw plug,
the disc has a handle for the convenience of pulling it out or may be so attached
that it may be pulled out with the screw plug.

page_text: The support may be in one piece with a bolted cover or with the screw plug itself,
or the support may be cast in, screwed in,.or fitted into the chamber of the arm of the
Watergauge and a ball or other shaped valve placed in & kept in its proper position
by the screw plug, in any case when the valve is taken out the opening is available
for clearing out the passage into the boiler by a rod as it is in the same position as
the usual clearing screw.
The accompanying drawing of the lower arm of a Watergauge illustrates one of the
ways of carrying out our invention in which Fig. 1 is a part sectional elevation and
Fig. 2 a part sectional plan, Fig. 3 is the plug or cover and Fig. 4 the valve and the
support taken out,-A is the body of the lower arm of the Watergauge,―B_the
passage that leads into the boiler, in this passage we prefer to have a cock as
shewn is the Watergauge glass-D is the automatic valve, when the glass breaks
the rush of water raises the valve D to its seat below the glass C and prevents
further escape of water E is the support for the valve D-F is the plug or cover
which closes the orifice through which the valve D is taken out, when this plug or
cover is removed and the support E and valve D taken out it will be seen that the
passage B can when required be cleared with a rod of any obstruction or incrusta-
tion and that by shutting the cock the valve can be taken out and put in while the
boiler is under pressure.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
The improved apparatus and arrangement hereinbefore described whereby in a
Watergauge the automatic valve is supported immediately below the glass and is
put in and taken out from the front without disturbing the cocks or the glass
through an orifice which serves for clearing the passage into the boiler-substan-
tially as hereinbefore described and illustrated by the accompanying drawing.
Dated this 16th day of Jul 1880
JOHN DEWRANCE.
GEORGE HENRY WALL.