AN IMPROVED FEED WATER HEATER to be as follows:-
Year: 1884

page_text: I OWEN THOMAS OWEN of Nantlle, near Carnarvon, in the County of Carnarvon
Quarry Master do hereby declare the nature of the said invention for "AN
IMPROVED FEED WATER HEATER to be as follows:-
"
My invention relates to the apparatus employed in the heating of the water
used in the supply of steam generators and particularly to the class of heaters in
which the exhaust steam is utilised to effect the heating of the water. In my
improved heater a water tank is sustained within a chamber and the exhaust steam
is delivered in an upward direction against the said tank and passing upwards
through a narrow space between the tank and the wall of the chamber imparts
heat to the tank, any steam remaining uncondensed escaping from the upper part
of the chamber or from a suitable part thereof. In one form of the apparatus the
said tank is of a partly globular form and the outer chamber is of a cylindrical
shape and is made of cast iron but the said chamber may be of brickwork or of
any suitable material. I prefer to cover the water tank or to use a close tank in
order to prevent any grease or matter passing into the chamber from being carried
forward into the steam generator. The heater is supplied with water by means of
a pipe and the heated water flows from the heater to the feed pump or the boiler
feeding apparatus or the said pump or apparatus withdraws the water from the
heater. In some cases I provide the steam outlet with a stop valve or with a
self-acting back pressure valve which will open with a slight pressure.
By means of my improved heater I am enabled to obtain highly heated feed
water and as a consequence to effect a considerable economy in fuel.
Dated this 31st day of January & D 1881.

page_text: I OWEN THOMAS OWEN of Nantle near Carnarvon in the County of Carnarvon,
Quarry Master do hereby declare the nature of the said invention for "AN
IMPROVED FEED-WATER HEATER" and in what manner the same is to be performed
to be particularly described and ascertained in and by the following statement and
accompanying drawings:-
My Invention relates to apparatus employed in the heating of the water used in
the supply of steam generators and particularly to the class of heaters in which
exhaust steam is utilised to effect the heating of the water. In my improved
heater a water tank is sustained within a chamber and the exhaust steam is
delivered in an upward direction against the said tank and passing upward through
a narrow space between the tank and the wall of the chamber imparts heat to the
tank any steam remaining uncondensed escaping from the upper part of the
chamber or from a suitable part thereof.
In order that the manner in which I carry my invention into effect may be well
understood I have attached hereto a sheet of drawings made to a scale of about
one and a half inches to the foot. In the said drawings Fig: 1. is a sectional
elevation of one form of my apparatus and Fig: 2. is a half sectional plan of the
same. In the said Figs: a. is a heater which is suspended within an outer
cylindrical shell or casing b. The bottom of the said heater is made of a semi-
globular form and the upper part is of a cylindrical form the heater being
made of wrought iron, steel, copper or other suitable metal. The outer casing may
be of cast iron or of wrought iron plates or may be built up with bricks or be
made of any suitable material which will withstand the action of the exhaust
steam. The top of the casing is closed and a pipe b¹ for the escape of the exhaust
steam is provided. The said casing is of such an internal diameter as that when
the heater is sustained in a central position there shall be a small space c around it.
The upper end of the heater is closed with an end or a top, in which is formed a
manhole which is closed with a removable lid or cover also that access can be had
to the interior of the heater to clean or repair the same. If preferred the heater
top may be domed The heater is provided with an inlet pipe d and an outlet
pipe e and a blow off pipe f. and in the example, is also provided with a glass
water level gauge g. but this latter fitting may be dispensed with if not considered
to be necessary.
When the apparatus is in use the feed water is admitted into the
heater through the inlet pipe and flows through the outlet pipe to the feed pump
or the boiler feeding apparatus or the said pump or apparatus withdraws the water
from the heater and delivers the heated water into the boiler but in such a case
the heater must be strong enough to sustain the boiler pressure. The exhaust
steam is conveyed by means of a pipe indicated by dotted lines at h. or by means
of pipes and is preferably discharged in an upward direction so as to strike the
bottoin of the heater and then to flow outwardly and upward to the space c.
through which it passes to the escape pipe b¹. It will be seen that the exhaust
steam will part with a considerable portion of its heat by contact with the bottom
of the heater and as the latter is entirely enveloped in the steam the feed water
will become highly heated. By the employment of such apparatus I am enabled
to effect a considerable economy in fuel. The heater being simple in form and not
being of a tubular construction is not liable to get out of order and is easily
cleaned. I do not confine myself to the cylindro-globular form of the heater but
I consider such form to be the most effective.

page_text: 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 apparatus of the form and construction, and for use, substantially as set
forth and indicated herein before and in and by the accompanying drawings.
2. A feed water heater in the form of a tank or vessel enclosed within a shell
or casing and fixed or set so that exhaust steam shall issue against the bottom of
the heater and pass around and over the same to the exit passage substantially as
set forth and indicated.
Dated thin 90th day of Anthro 1001.
.