Year: 1886

page_text: I DAVID PYKE of 3021 Stiles Street Philadelphia in the State of Pennsylvania
United States of America Engineer, do hereby declare the nature of this invention
to be as follows:
This Invention relates to compound water gauges for steam boilers, constructed
in such a manner that they will indicate the true state of the water in the boilers
at all times even should one or more of the connections with the boilers become
clogged.
The compound gauge consists of three glass tubes placed side by side, the two
outer ones being connected with the boiler at different levels, and the middle one
not being connected directly with the boiler but to globe valve casings to which
the ends of the side tubes are connected, the arrangement being such that when
both globe valves are closed, the lower end of one of the side tubes will be in open
communication with the upper end of the other side tube, and when both the
valves are opened, the corresponding ends of the side tubes will be in communi-
cation with each other, and with the ends of the centre tube.
With this construction, when the gauge is in order, the water will stand at the
same level in the three tubes. Should the water at any time stand at different
levels in the three tubes, the engineer knows that something is wrong, and can
soon find out, by operating the valves and blow-out cocks, where the trouble is,
and can remedy it by blowing out the clogged connection or otherwise clearing it.
The globe valve casings are connected by bars, which are made of greater
breadth than the diameter of the gauge tubes, so as to give firmness, and strength
to the compound gage, and serve as guards to prevent the glass tubes from being
accidentally broken.

page_text: 1 DAVID PYKE of 3021 Stiles Street Philadelphia in the State of Pennsylvania
United States of America Engineer, 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 compound water gauges for steam-boilers constructed
in such a manner that they will indicate the true state of the water in the boilers
at all times, even should one or more of the connections with the boilers become
clogged.
The Invention consists in the construction and combination of the various parts
of the compound water gauge as will be hereinafter fully described.
Reference is to be had to the accompanying drawings, forming a part of this
Specification in which figure 1 is a front elevation partly in section of my
compound water-gauge. Figure 2 is a side elevation of the same. Figure 3 shews
the apertures for the attachment of the gauge to a boiler front. Similar letters of
reference indicate corresponding parts in all the figures.
A. B. C. represent three parallel glass tubes. The ends of the side tubes A. C.
are fixed in sockets D which are connected by elbows D¹ with the steam boiler,
the elbows D' of one of the side tubes A C being turned downwards and those
of the other side tube being turned upwards, as shewn in figure 2, so that the
boiler connections of the two tubes A C will be at different levels as in figure 3,
and thus not liable to become clogged at the same time by impurities in the
water. The couplings D are provided with valves E and cocks F for use in
trying and blowing out the gauge. The ends of the centre tube B are con-
nected with the centre arms of the three-way globe valves G the side arms of
which are connected with the couplings D of the side tubes A. C. The globe
valves G are so arranged that when they are both closed the lower end of
one of the side tubes AC will be in open communication with the upper end
of the other tube, as shewn in figure 1 and when both the valves G are opened
the corresponding ends of the side-tubes will be in communication with each
other and with the ends of the middle tube. With this construction, when
the gauge is in order the water will stand at the same level in the three
tubes A B C. Should the water at any time stand at different levels in the three
tubes, it will be apparent that something is wrong. The locality of the defect can
be ascertained by operating the valves F G, and it can be remedied by blowing
out the clogged connection or otherwise clearing it. The casings of the three-way
globe valves G are connected by bars H which are made of a greater breadth than
the diameter of the tubes A B C so as to serve as connections to give firmness and
strength to the compound gauge, and as guards to prevent the glass tubes A B C
from being accidentally broken.
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. A compound water gauge for steam boilers, constructed substantially as
herein shewn and described, and consisting of the three parallel glass tubes A B C

page_text: the couplings D and elbows D¹ attached to the ends of the side tubes A C, and
provided with valves E and cocks F, and the three way globe valves G connected
with the ends of the centre tube B and with the elbow couplings of the side tubes
as set forth.
2. In a compound water gauge for steam-boilers the combination with the three
glass tubes A B C, the elbow couplings D attached to the side tubes A C, and the
three way globe valves G connected with the centre tube B and the elbow
couplings of the side tubes of the connecting bars H substantially as herein shewn
and described whereby greater firmness and strength are given to the gauge, and
the glass tubes are prevented from being accidentally broken, as set forth.