Improvements in the Construction and Arrangement of Apparatus for Heating Feed Water of Steam Boilers and Promoting Circula- tion in same.
Year: 1892

page_text: Date of Application, 29th July, 1892
Complete Specification Left, 20th Feb., 1893-Accepted, 25th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Construction and Arrangement of Apparatus
for Heating Feed Water of Steam Boilers and Promoting Circula-
tion in same.
I, CHARLES EDWIN HUDSON, of " Woodlands," Disraeli Road, Forest Gate,
in the County of Essex, Engineer, do hereby declare the nature of this invention
to be as follows :-
In my improved arrangement I use a suitable hollow metal chamber, or chambers,
fitted round the mouth of the furnace or furnaces of the boiler or boilers, the feed
water entering and passing through such chambers, and then into the boiler, in
the manner described and patented to me under Letters Patent No. 13,141 of 1888,
and my present improvement, consists in automatically bringing into use the
chambers already referred to, and in which the water is heated, for circulating
purposes, and for distributing the hot water into and about the working water level
of the boiler such circulation being brought into action immediately the fires are
lighted, and continuing whilst there is any heat in the furnaces, and when the
feed pump or pumps stop working.
For this purpose I employ an inverted feed or check valve or valves, that is with
the check or valve falling downwards such valve or valves being placed in a suitable
position on the boiler or boiler shell.
In combination with this valve or valves, I have independent safety valves
which are weighted in the ordinary manner by means of a spring or by dead
weight.
When, owing to the action of the feed supply, pressure is brought to bear
on the under side it closes the valve or valves, and when this pressure ceases, the
valve or valves fall automatically, and the water is allowed to circulate through.
From this valve or valves there is a pipe leading to the top of the metal chamber,
already referred to, and from the bottom of the said chamber there is a pipe leading
to another inverted check or feed valve, which is fitted in a suitable position at the
bottom of the boiler, or in any position where there is usually no circulation.
By this method, when the feed pump or pumps stop working, the circulation
is automatically carried on from the boiler, through the metal chamber or chambers,
and back to the boiler.
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C. E. HUDSON.
COMPLETE SPECIFICATION.
Improvements in the Construction and Arrangement of Apparatus
for Heating Feed Water of Steam Boilers and Promoting Circula-
tion in same.
I, CHARLES EDWIN HUDSON, of Woodlands, Disraeli Road, Forest Gate,
in the County of Essex, Engineer, do hereby declare the nature of this invention
to be as follows:-
In my improved arrangement I use a suitable hollow metal chamber, or chambers,
fitted round the mouth of the furnace or furnaces of the boiler or boilers, the feed
water entering and passing through such chambers and then into the boiler, in
the manner described and patented to me under Letters Patent No. 13,141 of
1888, and my present improvement consists in automatically bringing into use
the chambers already referred to, and in which the water is heated, for circulating
D
017

page_text: purposes, and for distributing the hot water into and about the working water
level of the boiler, such circulation being brought into action immediately the
fires are lighted and continuing whilst there is any heat in the furnaces and
when the feed pump or pumps stop working. For this purpose I employ an
inverted feed or check valve or valves, that is with the check or valve falling
downwards, such valve or valves being placed in a suitable position on the boiler or
boiler shell. In combination with this valve or valves, I have independent safety.
valves which are weighted in the ordinary manner by means of a spring or by
dead weight. When, owing to the action of the feed supply, pressure is brought
to bear on the under side it closes the valve or valves, and when this pressure
ceases, the valve or valves fall automatically and the water is allowed to circulate
through. From this valve or valves, there is a pipe leading to the top of the
metal chamber, already referred to, and from the bottom of tlie said chamber there
is a pipe leading to another inverted check or feed valve, which is fitted in a
suitable position at the bottom of the boiler, or in any position where there is
usually no circulation. By this method, when the feed pump or pumps stop
working, the circulation is automatically carried on from the boiler, through the
metal chamber or chambers, and back to the boiler.
In the drawings annexed hereto,
Fig. 1 shows the front view of a boiler, with two furnaces A. and B. At the
mouth of these furnaces there are hollow metal chambers C. C. following the shape
of the furnaces. The feed water passes in at D. to the bottom of the hollow
chamber at E. round this chamber, and through the pipe F. into the bottom end of
the next chamber; thence, out at G. through the valve H. into the boiler, the
arrangement thus acting as a feed water heater. When the feed valve D. is closed,
the valve I (which is shown in the drawing at the back of the boiler, with a pipe
leading to the pipe F. on the front of the boiler) opens, or drops, automatically, as
the pressure of the feed water is taken off. At the top of the hollow metal
chambers C. C. there is a pipe J. J., leading to a combined automatic and safety
valve or valves K. The automatic valve opens when the feed supply is stopped.
This valve has a branch L., leading into, and fixed to the shell of the boiler in any
suitable position. By this method, when the feed is closed, and the water in the
chambers C. C. is heated, it passes through the pipe J. J. and through the valve K.;
and the cold water at the bottom of the boiler passes through the valve I into the
bottom of the metal chambers C. C. through the pipe F. forming a perfect
circulation of water and developing a uniform temperature of both the water and
the shell of the boiler.
Fig. 2. shows a section of the automatic valve K. Fig. 1. with a safety valve or
valves attached to same. Branch A. is fixed to the shell of the boiler, or in any
suitable place, near the level of the water. Branch B leads to the top of the hollow
metal chambers inside the furnaces. The valve is so constructed, that it opens
automatically when the pressure is equal top and bottom, the valve C. then falling
to the top of the spindle D., allowing a clear opening between A. and B. Should
anything happen to cause the valve C. to close, and the pressure to accumulate in
the chamber E., the safety valve F. would be lifted, this being weighted to any
desired pressure.
Fig. 3. shows a front view, part section, of Fig. 2., and the arrangement of two
safety valves G. G., with a branch H. for the escaped steam to pass into the bilge of
a ship, or to any desired place. Space I. in this drawing leads into the opening E.
Fig. 2.
Fig. 4. shows a plan of the valve.
Fig. 5. shows the construction of the valve I. Fig. 1. at the back of the boiler.
The branch J. leads into the boiler, as near the bottom as possible; or an internal
pipe may lead to the bottom of the boiler, or to any spot where the water is coolest.
Branch K. is carried by pipe to the front of the boiler, to the bottom of the hollow
metal chambers, as shown in Fig. 1. at F. The valve L. is shown closed, but when
the feed pump is not working, and there is a uniform pressure between J. and K.,

page_text: this valve drops automatically to the top of the spindle M., so that the cold water
can pass through into the bottom of the metal chambers, where it is heated, and
then
passes through the pipes shown J. J. Fig. 1. through the valve Fig. 2. and
into the boiler completing the circulation.
Fig. 6. shows a plan of Fig. 5.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The improved feed water heating and water circulating apparatus for steam
boilers substantially as described.
2. The use of automatic valves in an improved feed water heating and water
circulating apparatus for steam boilers substantially as described.
3. In a feed water heating and water circulating apparatus for steam boilers, the
use of automatic valves substantially as described and shown in drawings.
4. In a feed water heating and water circulating apparatus for steam boilers, the
use of safety valves attached to, or combined with, automatic valves, substantially
as described and shown in drawings.
5. The use of an automatic valve or valves connected to a hollow metal chamber
or chambers, substantially as described, for heating and circulating the water of
steam boilers, and for obtaining a uniform temperature in both the water and the
shell of the boiler.
Dated this 20th day of February 1893