Improvements in Gauge Glasses for the Water Gauges of Steam: Generators and the like.
Year: 1897

page_text: ROYDONAL
DIECIFICATION.
Improvements in Gauge Glasses for the Water Gauges of Steam:
Generators and the like.
We, JOSEPH SUMMERVILLE, of 15, Northumberland Street, Blyth, Engineer, and
FRANCIS DAVIDSON, of 31, Delaval Terrace, Waterloo, Blyth, Storekeeper, do hereby
declare the nature of this invention to be as follows:-
When fitting new glasses into the water gauges of steam generators and the like
they are often broken owing to the glass springing up when the packing gland
nut is being tightened or when the steam is first turned on.
This invention has for its object to prevent this springing up of the glass and
therefore prevent its breakage and consists essentially in forming a rim or fillet
on the glass, or applying a loose rim or fillet thereto.
.
This rim or fillet prevents the glass from springing up when being tightened by
the packing gland nut and when the glass has been fixed, prevents it from springing
up when the steam is first turned on. It also prevents the india-rubber ring or
other packing from getting underneath the glass so as to cause an obstruction in the
waterway of the glass, and possibly cause a false water level indication in the
glass.
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}
When a separate rim or fillet is used it may be of glass, wood, or other material
but preferably of lead and is fitted tight on the end of the glass, but its outside;
diameter is less than that of the packing box so as to allow of expansion..
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0001
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GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Gauge Glasses for the Water Gauges of Steam
Generators and the like.
We, JOSEPH SUMMERVILLE, of 15, Northumberland Street, Blyth, Engineer, and
FRANCIS DAVIDSON, of 31, Delaval Terrace, Waterloo, Blyth, Storekeeper, 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 :-
When fitting new glasses into the water gauges of steam generators and the like
they are often broken owing to the glass springing up when the packing gland nut
is being tightened or when the steam is first turned on.
This invention has for its object to prevent this springing up of the glass and
therefore prevent its breakage and consists essentially in forming a rim or fillet on
the glass, or applying a loose rim or fillet thereto.

page_text: This rim or fillet prevents the glass from springing up when being tightened by the
packing gland nut and and after the glass has been fixed, prevents it from springing
up when the steam is first turned on. It also prevents the india-rubber ring or
other packing from getting underneath the glass so as to cause an obstruction in
the waterway of the glass, and possibly cause a false water level indication in the
glass.
When a separate rim or fillet is used it may be of glass, or other material but
preferably of lead and is fitted tight on the end of the glass, but its outside diameter
is less than that of the packing box so as to allow of expansion.
Referring to the accompanying drawings Fig. 1 is a section showing a gauge
glass constructed according to this invention, and Fig. 2 shows a modification in
which a separate rim or fillet is used.
The glass a is provided with a rim or fillet b at one end thereof so that when the
gland nut is being tightened or when steam is first turned on the glass is prevented
from springing up and breaking. The packing ring d is kept in place and cannot
get underneath the glass a so as to cause an obstruction in the waterway of the
glass, and possibly cause a false water level indication in the glass.
In Fig. 1 the fillet or rin b is formed on the glass a while in Fig. 2 the fillet or
rim b is separate and made of glass, wood or other suitable material but is
preferably of lead fitted tight on the end of the glass.
The fillet 6 must not fit close up to the nut c, a small space being left to allow for
expansion.
The glass may be formed with a bell shaped or swelled out or other suitably shaped
end to serve the purpose of the rim or fillet b.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what I
claim is :-
(1) An improved gauge glass for the water gauges of steam generators and the
like, having a fillet or rim formed on or attached to one end of the glass
substantially as described and for the purposes specified.
(2) An improved gauge glass for the water gauges of steam generators and the
like substantially as described with reference to the accompanying drawings and for
the purposes specified.
101
n1
1000
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.