IMPROVEMENTS IN GAUGE GLASS FITTINGS
Year: 1884

page_text: I EDWIN AMBROSE BRYDGES a member of the "International Association for
Patent Matters" of 26 Boulevard de Strassbourg in the City of Paris and French
Republic do hereby declare the nature of my Invention for IMPROVEMENTS IN
GAUGE GLASS FITTINGS 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 improvements in gauge glass fittings and consists
chiefly in the application and employment of a particularly formed piece of bronze
with an india rubber ring and a bronze disc in the upper tube holder and in
pressing the same against the glass tube by means of a screw plug and further in
the arrangement of the valve in the inlet port for water and steam so that in case
the glass should be broken or ruptured the inlets will be automatically closed by
the said valves.
Figures 1 and 2 are two vertical sections of the present Invention at right
angles to each other.
Figure 3 represents the valve P and valve stem 0-Figure 4 is a section of the
piece of bronze I.
Figure 5 a. view of the same from beneath.
Figure 6 represents the bronze disc in side and plan view.
A, Figures 1 and 2, is a plate of cast metal which serves to carry the holders C
for the glass tube or cylinder L-These holders C can be screwed into the plate A
(Figure 2) or can be provided with a suitable flange which is screwed to the
plate A by means of or more screws (Figure 1)-The cast metal plate A carries
further a plate B of enamelled sheet iron which said plate is provided with an
appropriately graduated scale and is further provided with a central mark or sign
to denote the normal water line.
The tube holder C which is fixed to the plate. A serves also as seat for the
valve P and is at its upper end provided with a screw worm or female screw into
which the plug or bolt H is screwed by means of which said screw-bolt stopper or
plug H the bronze disc J, bronze forked piece I and the india rubber ring Z are so
pressed onto the end of the glass tube L that a tight elastic closure of the same is
attained-The valve P is guided in the stuffing box E the stuffing or packing of
which latter is firmly compressed by means of the screw M the said valve P being

page_text: opened and closed by means of the handle or hand wheel N-The valve stem O is
squared off in order to permit the passage of steam or water and so that in
rotating the valve, any impurities which may have settled on the said stem will be
removed.
The boring or port D forms the communication way between the steam boiler
and the gauge glass L
A cleansing or outlet cock G is screwed into the lower tube holder.
The forklike bronze casting or piece I can also be applied to existing gauge
glasses.
The gauge glass described in the foregoing Specification offers the following
advantages.
a) In case the glass tube L should be broken or ruptured, the valve P will close
itself automatically.
b) The glass tubes L can be readily and rapidly changed by simply loosening
the screw plug or stopper H a trifle and raising the piece I when the glass tube L
can be readily removed and a fresh tube inserted whereupon the screw plug or
stopper is again screwed tight.
It is evident that other appropriate metal can be employed instead of the bronze
mentioned in the foregoing Specification without departing from the tenor of this
Invention.
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. In gauge glasses the arrangement application and employment of the piece of
bronze I of novel form with the india rubber ring Z and the bronze disc J in the
upper tube holler and the pressing of the same against the glass tube L by means
of the screw plug or stopper H or its equivalent substantially as described and
shown in the accompanying Drawings.
2. The arrangement application and employment of the valve P in the inlet
port or opening D for water and steam in such manner that the said inlet port or
opening is automatically closed by the valve P in case the gauge glass L should be
broken or ruptured substantially as described and shown in the accompanying
Drawings,