Improvements in Apparatus for Heating and Regulating the Supply of Feed Water for Boilers and the like.
Year: 1892

page_text: Date of Application, 18th Nov., 1892
Complete Specification Left, 18th Aug., 1893—Accepted, 23rd Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Heating and Regulating the Supply
of Feed Water for Boilers and the like.
We, PHILLIP BROWNE, of 45 Rimrose Road, Bootle, near Liverpool, Boiler
Maker, and DAVID CRAWFORD, of Blackstone Street, Liverpool, Engineer, do
hereby declare the nature of this invention to be as follows:-
This invention relates to apparatus for heating and regulating the supply of feed
water for boilers and has for its object the heating of the feed water and the
maintenance of the normal level of water in the boiler.
According to our invention, we construct such apparatus as follows ;-
-
We provide a tank situated near the boiler and connected therewith by two pipes,
one leading to the water space and the other to the steam space of the boiler, and
the level of the tank is such that when the water is at the normal level in the boiler
the tank contains steam and water, the level of the latter, of course, corresponding
with that of the water in the boiler.
The feed pipe is led through the tank and in the portion of the pipe within the
tank we fit a regulating valve or cock operated by a float which is actuated by the
rise and fall of the water level in the tank, the arrangement being such that when
the water level in the boiler, and therefore in the tank, rises above the normal
height, the float is raised sufficiently to close the regulating valve.
It will be seen that the feed water in passing through that portion of the feed
pipe which is within the tank is heated before entering the boiler.
A branch is led from the feed pipe between the pump or the like and the tank,
which branch is fitted with an escape valve loaded to a pressure somewhat in excess
of the boiler pressure, so that when the regulating valve is closed, the feed pump
forces the water through the escape valve into a suitable vessel or receiver from
which the water again passes to the pump. A by-pass pipe is fitted, controlled by
a by-pass cock, through which, when opened, the feed water can pass direct to the
boiler in the usual manner, without passing through the regulating valve.
If preferred, the by-pass pipe may also be led through the tank, so that the feed
water may be heated when the by-pass pipe is used; and the branch to the escape
valve may be led from the portion of the by-pass pipe between the tank and the
boiler, the by-pass cock in this arrangement being placed between the escape valve
branch and the boiler.
Dated this Seventeenth day of November 1892.
SLOAN & LLOYD BARNES,
Castle Chambers, 26, Castle Street, Liverpool,
Agents for the Applicants.
Improvements in Apparatus for Heating and Regulating the Supply
of Feed Water for Boilers and the like.
We, PHILLIP BROWNE, of 45 Rimrose Road, Bootle, near Liverpool, Boiler
Maker, and DAVID CRAWFORD, of Blackstone Street, Liverpool, Engineer, do
hereby declare the nature of this invention and in what manner the same is to be
[D77

page_text: performed, to be particularly described, and ascertained in and by the following
statement:—
This invention relates to apparatus for heating and regulating the supply of feed
water for boilers and has for its object the heating of the feed water and the
automatic maintenance of the normal level of water in the boiler.
In the accompanying drawings which serve to illustrate our invention, Fig. I is
an elevation of the apparatus fitted to an ordinary double flued boiler and Fig. II is
a plan.
In the two views the same parts are indicated by the same reference figures, and
the direction of flow is indicated by the arrows.
1 is a closed tank situated near the boiler 2 and connected therewith by the two
pipes 3 and 4, which lead from the steam space and water space respectively and
which serve to maintain the water in the tank at the same level as that in the
boiler; the pipes are controlled by the stop valves shown. 5 is the feed pipe from
the feed pump and 6 is the boiler feed check valve. The feed pipe is connected to
the feed check valve by the pipe 7 which passes through the tank and also by the
by-pass pipe 8, the former being controlled by the valves 9 and 10 and the cock or
valve 12 as hereinafter described, and the latter by the valve 11. Under normal
circumstances the valve 11 is closed and the feed water on its way to the boiler
passes through the pipe 7; I fit to this pipe within the tank 1, a regulating valve
or cock 12, controlled by the float 13 which is operated by the rise and fall of the
water level in the tank, which, as before stated, is the same as that in the boiler.
The regulating cock 12 and the lower portion of the pipe 7 are below the water
level but a portion of the pipe 7 is preferably bent up so as to be surrounded by
the live steam in the upper part of the tank, and the regulating cock 12 is so adjusted
that when the water reaches the normal level the cock is just sufficiently open to
maintain the water at this level. A relief valve 14 is fitted to the feed pipe so that
when the regulating cock 12 is closed the feed water is pumped through the relief
valve 14, loaded to a pressure in excess of the boiler pressure, either into a tank, or
back to the hot well of the engine, as may be desired.
Should it be desired to isolate the tank, the valves 9 and 10 are closed and 11 is
opened, when the feed water enters the boiler by the by-pass pipe 8.
The tank is fitted with a gauge glass and has a man-hole, the cover of which is
removed in Fig. 1.
The action of the apparatus is as follows;-Assuming that the by-pass valve 11
is closed and that the valves 9 and 10 are open, the feed water will pass through
the pipe 7 and be thereby heated before being delivered to the boiler and the supply
to the boiler will be automatically regulated inasmuch as the opening of the
regulating cock 12 will vary in accordance with the rise and fall of the water level;
the apparatus thus heats the feed water and regulates the supply thereof.
We are aware that prior to our invention a tank connected to the steam and
water spaces of a boiler and a ball cock therein have been used to regulate the
supply of feed water, and to the use of such we make no broad claim.
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 ;-
1. In combination with a boiler, a tank connected to the boiler as described
through which a pipe connecting the feed pump to the boiler passes, said pipe
being controlled by a valve operated by a float in said tank, a by-pass pipe
between the feed pump and the boiler and a relief valve operated by the excess of
pressure when the flow of water to the boiler is cut off, substantially as described
and illustrated.
2. In combination with a tank connected to the boiler in the manner and for the
purpose described, the feed delivery pipe passing through the said tank and
controlled by the ball valve in the tank, substantially as described and illustrated.

page_text: 3. The combination and arrangement of parts forming the improved apparatus
for heating and regulating the supply of feed water for boilers, substantially as
described and illustrated in the drawings.
Dated this 17th day of August 1893.
SLOAN & LLOYD BARNES,
Castle Chambers, Castle Street, Liverpool,
Agents for the Applicants.