Year: 1886

page_text: Date of Application, 9th Nov., 1886
Complete Left, 25th July, 1887
Complete Accepted, 27th Sept., 1887
RESERVI
1 JOHN DOWNTON, Engineer of 71 West India Dock Road London do hereby declare
the nature of this invention to be as follows :—
This invention has for its object certain improvements, hereinafter set forth, for
providing Marine Boilers with fresh water from sea water, to maintain or supplement,
for the waste by leakage and by steam used for various purposes from the main
boilers.
A vessel or tank, of any shape to suit the position of Engine-room, is provided with
a copper worm, shaped to suit the said tank, the said worm, or series of pipes, are
connected and form a continuous length, being connected with steam from the boiler
direct, or from the intermediate or low pressure cylinder receiver of the main engines,
as may be arranged. The said worm or series of pipes is connected with the outlet
end to the hot well, being jointed to the tank at its upper and lower ends, the said
tank is supplied with sea-water, which surrounds the coil or wormed steam pipe, and
has an outlet vapour pipe at its top, connected also with the hot-well; the tank is also
supplied with a gauge glass to regulate the height of water, and it can be supplied by
pumping with the Donkey engine, or preferably, by placing the tank in the Engine
room, below draught water line of the vessel; so that by opening of the valve the
water will run into the tank by gravity, until a sufficient quantity is supplied, when
the valve will be closed; the valve can be worked automatically or by hand.
It is obvious, that the steam passing through a coil giving a large heating surface,
exposed and surrounded by sea-water, will tend to heat the said water, from which the
vapours arising will pass through the top of the tank into the hot-well, and so keep up
a continuous supply to the Boilers.
It is understood the tank is so constructed, and the steam worm so connected, that
the worm can, be taken out with but little trouble and labor, and the deposits from
the sea-water easily removed from the tank.

page_text: I also include another method of securing fresh water by the same tank and worm-
pipe, which worm or coil-pipe I pass through the furnace door frames, by which the
said pipe is heated to a high temperature.-I connect this pipe to the sea-water, at the
one end, which circulatos through the pipe, and discharges itself into the tank at
the other, giving off vapour or steam, which is conveyed as before stated into the
hot-well.
By this latter device, or arrangement, I simply heat the copper worm or coil
externally by waste heat given ont at the furnace fronts, instead of heating same by
passing steam through it.
It is understood this worm or coil, can be made of Copper, Brass, Wrought Iron,
or any other suitable material, and of any size according to the quantity of water
required, and can be made of corrugated or twisted tube, as may be desired.
Dated this 8th day of Nawam 100

page_text: COMPLETE SPECIFICATION.
Apparatus for Supplying Boilers with Fresh Water from Salt
Water.
I JOHN DOWNTON of 71 West India Dock Road, London, Engineer do hereby
declare the nature of my invention for "APPARATUS FOR SUPPLYING BOILERS WITH
FRESH WATER FROM SALT WATER" and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement :-
This invention has for its object certain improvements, hereinafter set forth, for
providing Marine Boilers with fresh water from sea water, to maintain, or supple-
ment, for the waste by leakage and by steam used for various purposes from the main
boilers.
A vessel or tank of any shape to suit the position of Engine room, is provided with
a copper worm, shaped to suit the said tank, the said worm or series of pipes are
connected and form a continuous length, being connected with steam from the Boilers
direct, or from the intermediate or low pressure cylinder receiver of the main Engines
as may be arranged. The said worm or series of pipes is connected at the outlet end
to the hot-well, being jointed to the tank at its upper and lower ends.-The said tank
is supplied with sea water, which surrounds the coil or worm steam pipe, and has an
outlet vapour pipe at its top connected also with the hot-well; the tank is also supplied
with a gauge glass to regulate the height of water and it can be supplied by pumping
with the Bonkey Engine, or preferably by placing the tank in the Engine room,
below draught water line of the vessel, so that by opening of the valve the water will
run into the tank by gravity until a sufficient quantity is supplied when the valve will
he closed the valve can be worked automatically or by hand.
It is obvious, that the steam passing through a coil giving a large heating surface
exposed to and surrounded by son-water, will tend to heat the said water, from which
the vapours arising will pass through the top of the tank into the hot well and so keep
up a continuous supply to the Boilers.
It is understood the tank is so constructed, and the steam worin so connected, that
the worm can be taken out with but little trouble and labor, and the deposits from the
sca-water easily removed from the tank.
I also include another method of securing fresh water by the same tank and worm
pipe, which worm or coiled pipe, I pass through the furnace door frames, by which
the said pipe is heated to a high temperaturo. I connect this pipe to the sea-water at
the one end, which circulates through the pipe, and discharges itself into the tank
at the other, giving off vapour or steam, which is convoyed as before stated into the
hot well.
By this latter device or arrangement I simply heat the copper worm or coil
externally by waste heat given out at the furnace fronts instead of heating same by
passing steam through it.

page_text: It is understood this worm or coil can be made of Copper, Brass, Wrought Iron, or
any other suitable material and of any size according to the quantity of water required,
and can be made of corrugated or twisted tube as may be desired.
The drawing shows a tank fitted with one of those worms or coiled pipes A is a
pipe or tube which leads from the tank into the hot well and which carries the vapour
or steam as it arises from the tank to the hot well.—B is the worm or coiled pipe, one
end of which is connected to the Boilers, or to the low pressure cylinder receiver of
the Engine or to the furnace front or to whatever place steam or heat is generated as
may be thought most desirable; the other end of this worm or coiled pipe is carried
through the tank as shown at C. and is also connected to the hot well so that the con-
densed water which may collect, or steam may pass off into the hot well; the worm
or coiled pipe becoming hot heats the water in the tank which passes off in the shape
of vapour or steam through the pipe A. into the hot well being there converted into
condensed water free from salt and other impurities.-D is the pipe or sea-cock
through which the tank is supplied with salt water either from the Donkey pump, or
the circulating pump or direct from the sea as explained already.
E. is the gauge for telling the height of the sea water in the tank.
The drawing shows a worm or coiled pipe only but this may consist of a series of
tubes or plates oither plain or corrugated.
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. The use of an apparatus for supplying frosh water to Boilers from salt water
substantially as described.
2. The use of an apparatus for making good the deficiency in condensed feed water
substantially as described.
3. The use of a coiled pipe or pipes or worm connected at one end to a steam or
heat supply and at the other to the hot well or feed water substantially as described.
4. The use of a tank connected with the hot well or feed water as and for the
purpose described.
T: 70th at Tools 1007