допого, Tanks, or the like.
Year: 1885

page_text: допого,
Tanks, or the like. :
I ARTHUR BARRETT, of High Street, Saffron Walden, in the county of Essex;
Student do hereby declare the nature of this invention to be as follows:-
This invention relates to the construction of an improved apparatus to be
applied to steam' boilers, tanks or the like for causing an alarm to be sounded or
for closing an electric circuit on the water falling below the required level.
:
In carrying out my invention I construct the apparatus of a tube in which a
head is fixed working upon a pivot. The pivot and head are so constructed as to
allow free passage through the same to the tube. At one end of the tube is fitted
a cylinder having a cock or the like at the lower part of the end opposite to the
end to which the tube is fitted; on the other end of the tube is a weight. The
weight is so adjusted that with the tube on the same side of the head, it more than,
counterbalances the tube on the other side of the head with the cylinder, and cock
or the like.
The pivot is connected to the boiler, tank or the like by means of a pipe (or by
other suitable means) which pipe enters the boiler, tank, or the like at the point at
which the alarm is to be sounded or electric circuit closed.
When the water in the boiler is at or above the required level it will pass
into the apparatus and completely fill the cylinder and tube (the cock at the end
of the cylinder having been previously adjusted so as to allow a small egress for
the water). The tube working upon the pivot will thereby be moved out of. the
horizontal position, the cylinder being down and the weight up. The tube will
remain in this position as long as the water in the boiler is above the line, but if,
the water should fall below the line; the apparatus will become empty by reason,
of the egress of the water through the cock and no more water coming from the
boiler; the cylinder will then rise and will close an electric circuit by means of a
suitable arrangement and will place in communication with the boiler a whistle
fitted upon the hereinbefore described head, the whistle will thereby be caused to
sound as long as it is in connection with the boiler and there is a supply of steam
therein.

page_text: An Improved Alarm Apparatus Applicable to Steam Boilers,
Tanks, or the like.
I ARTHUR BARRETT, of High Street, Saffron Walden, in the county of Essex,
Electrician, 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 the construction of an improved apparatus to be applied
to steam boilers, tanks or the like for causing an alarm to be sounded or for closing
an electric circuit on the water falling below the required level.
In carrying out my invention I construct the apparatus of a tube in which a
head is fixed working upon a pivot. The pivot and head are so constructed as to
allow free passage through the same to the tube. At one end of the tube is fitted
a cylinder having a cock or the like at the lower part of the end opposite to the
end to which the tube is fitted; on the other end of the tube is a weight. The
weight is so adjusted that with the tube on the same side of the head, it more than
counterbalances the tube on the other side of the head with the cylinder and cock
or the like.
The pivot is connected to the boiler, tank or the like by means of a pipe (or by
other suitable means) which pipe enters the boiler, tank, or the like at the point at
which the alarm is to be sounded or electric circuit closed.
In order to enable my invention to be fully understood I will proceed to describe
the same by reference to the accompanying drawing in which figure 1 is a front
sectional elevation of an alarm apparatus constructed according to my invention
adapted for use with a steam boiler; figure 2 is a transverse section of figure 1.
Similar letters in both the figures represent similar parts.
a, a, is the tube formed in two parts and b, is the head fixed at about the centre
of the tube a, and connecting the two parts thereof together; c, is the pivot on
which the head b works; the pivot c, is formed hollow as shewn and is provided
with an opening d, allowing free passage through the same to the tube a; e, is the
cylinder fitted at one end of the tube a; and f, is the cock or tap at the lower part
of the same as shewn in figure 1; g, is the weight on the opposite end of the
tube a; the said weight is screw threaded internally and can be rotated on the
screw threaded end of the tube so that it can be adjusted thereon to more than
counterbalance the cylinder e; h, is the pipe connecting the pivot c, to the boiler, A,
the said pipe entering the latter and having the pivot c, fixed to the opposite end;
i, is a whistle for giving the alarm; the whistle is fixed on the head b, and com-
municates by a passage j, therein with a port or opening in the pivot c, and
'therefore with the interior of the boiler A, when the tube a, is in a horizontal
position; the said communication is however closed when the tube assumes an
oblique position as shown in dotted lines in figure 1.
The operation of the apparatus is as follows:
When the water in the boiler A, is at or above the level of the pipe h, it will
pass into the apparatus through the pipe h, and the opening d, in the pivot c, and
will completely fill the cylinder e and the part of the tube a, carrying the same (the

page_text: cock f, at the end of the cylinder e, having been previously adjusted so as to allow
a small egress for the water). The weight of the water in the cylinder e, will cause
the tube a, working upon the pivot c, to be moved out of the horizontal position
as shewn by the dotted lines figure 1, the cylinder e, being lowered and the
weight g, raised. The tube a will remain in this position as long as the water in
the boiler A is at or above the level of the pipe h, but if the water should fall
below this level the apparatus will become empty by reason of the egress of the
water through the cock f, and no more water coming from the boiler A; the
cylinder e, will then rise into the position shewn in full lines and will place
the whistle i in communication with the steam space in the boiler A and the
whistle will thereby be caused to sound and give the alarm as long as it is in
communication with the steam space of the boiler and there is a supply of steam
therein.
Although I have described and illustrated my improved alarm apparatus as
adapted for use with a steam boiler, it will be obvious that it is equally applicable
for use with a tank or the like in which case the alarm instead of being given by
means of a whistle would be caused by the tube a, closing an electric circuit and
thereby sounding a bell or operating an indicator or the alarm could be given in
any other suitable manner. The said electrical device is also applicable for use
with steam boilers.
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 alarm apparatus applicable to steam boilers tanks or the like consisting
mainly of a pivotting or oscillating tube communicating with the interior of the
boiler tank or the like and provided with a chamber having a suitable outlet
the said oscillating tube being operated substantially in the manner and for the
purposes hereinbefore described.
2. The improved alarm apparatus herein before described and represented in the
accompanying drawing.
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