AN IMPROVED FEED WATER HEATER AND FUEL ECONOMISER, AND APPARATUS CONNECTED THEREWITH, FOR STEAM BOLLERS "
Year: 1873

page_text: LETTERS PATENT to Edward Davies, of Liverpool, in the County of
Lancaster, and Stephen Dawson, of Manchester, also in the County
of Lancaster, for the Invention of "AN IMPROVED FEED WATER HEATER
AND FUEL ECONOMISER, AND APPARATUS CONNECTED THEREWITH, FOR STEAM
BOLLERS
"
PROVISIONAL SPECIFICATION left by the said Edward Davies and
Stephen Dawson at the Office of the Commissioners of Patents,
with their Petition, on the 10th December 1873.
We, EDWARD DAVIES, of Liverpool, in the County of Lancaster, and
STEPHEN DAWSON, of Manchester, also in the County of Lancaster, do
hereby declare the nature of the said Invention for "AN IMPROVED FEED
WATER HEATER AND FUEL ECONOMISER, AND APPARATUS CONNECTED THEREWITH, FOR
STEAM BOILERS," to be as follows:-
This Invention relates to an improved apparatus for heating the feed
water of steam boilers, whether such feed water is supplied from pumps,
injected, or from a main or otherwise.

page_text: This Invention further relates to the placing or position of such
apparatus, so that the waste or latent heat from the furnaces of steam
boilers may
be used with the greatest effect, and to apparatus connected
with the said feed water heater, whereby it may be shut off from the
action of the flame from the furnaces of the said steam boilers when
required, and also to apparatus whereby the heat from the furnaces
acting on the feed water heater is rendered more intense by reflection.
A feed water heater and fuel economiser constructed according to this
Invention may consist of two or more vertical metal pipes of suitable
diameter. These vertical pipes are by preference composed of short T
pieces screwed or coupled together, and so arranged that they can be
connected together by horizontal pipes screwed or connected to the T
pieces. Or the feed water heater may be formed of a series of vertical
pipes connected at the top and bottom by horizontal pipes, or of
vertical and horizontal pipes combined forming a network, or of a single
length of pipe formed in the shape of a flat scroll. The feed water
heater thus constructed may be of considerable width or height with little
depth or thickness. In consequence of this construction it is of form
suitable to place immediately behind furnaces and flues of steam boilers
in what is known as the combustion chamber without taking up too
much room in the chamber and being an impediment to the draught.
In front of the feed water heater is placed an adjustable damper,
formed by preference of a sliding metal plate, so that the feed water
heater when required can be shut off from the action of the flame.
Behind the feed water heater we place terra cotta or fire-clay bricks
or tiles, which may have glazed surfaces or otherwise so as to retain or
reflect the heat and throw it back on the feed water heater.
The feed water heater before described is fitted with suitable supply
pipes and cocks, also a safety valve and non-return valve from the
boiler.
It will be seen that a feed water heater constructed and placed in
position directly behind the furnaces of steam boilers according to this
Invention is subject to the direct action of the most intense heat, and at
the same time the feed water heater offers no obstruction to the draft,
whether the flues are return flues through the boiler, lead over the

page_text: boiler, under the boiler, or round the boiler, and it will be thus obvious
that by the use of the feed water heater great saving of fuel is the
result.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Edward Davies and Stephen Dawson in the
Great Seal Patent Office on the 6th June 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, EDWARD
DAVIES, of Liverpool, in the County of Lancaster, and STEPHEN DAWSON,
of Manchester, also in the County of Lancaster, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Tenth day of December, in the
year of our Lord One thousand eight hundred and seventy-three, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and succes-
sors, give and grant unto us, the said Edward Davies and Stephen
Dawson, Her special licence that we, the said Edward Davies and
Stephen Dawson, our executors, administrators, and assigns, or such
others as we, the said Edward Davies and Stephen Dawson, our
executors, administrators, and assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during
the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "AN
IMPROVED FEED WATER HEATER AND FUEL ECONOMISER, AND APPARATUS CONNECTED
THEREWITH, FOR STEAM BOILERS," upon the condition (amongst others) that
we, the said Edward Davies and Stephen Dawson, our executors or
administrators, by an instrument in writing under our, or their, or one
of their hands and seals, should particularly describe and ascertain the
nature of the said Invention, and in what manner the same was to
be performed, and cause the same to be filed in the Great Seal Patent
Office within six calendar months next and immediately after the date
of the said Letters Patent.
KNOW vn that
the maid and Daring and

page_text: manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
This Invention relates to an improved apparatus for heating the feed
water of steam boilers, whether such feed water is supplied from pumps,
injected, or from a main or otherwise.
This Invention further relates to the placing or position of such
apparatus, so that the waste or latent heat from the furnaces of steam
boilers may be used with the greatest effect, and to apparatus connected
with the said feed water heater, whereby it may be shut off from the
action of the flame from the furnaces of the said steam boilers when
required, and also to apparatus whereby the heat from the furnaces
acting on the feed water heater is rendered more intense by reflection.
A feed water heater and fuel economiser constructed according to this
Invention may consists of two or more vertical metal pipes of suitable
diameter. These vertical pipes are by preference composed of short
T pieces screwed or coupled together, and so arranged that they can be
connected. together by horizontal pipes screwed or connected to the
T pieces. Or the feed water heater may be formed of a series of vertical
pipes connected at the top and bottom by horizontal pipes, or of vertical
and horizontal pipes combined forming a network, or of a single length
of pipe formed in the shape of a flat scroll. The feed water heater thus
constructed may be of considerable width or height with little depth or
thickness. In consequence of this construction it is of form suitable to
place immediately behind furnaces and flues of steam boilers in what is
known as the combustion chamber without taking up too much room in
the chamber and being an impediment to the draft.
In front of the feed water heater is placed an adjustable damper
formed by preference of a sliding metal plate, so that the feed water
heater when required can be shut off from the action of the flame.
Behind the feed water heater we place terra cotta or fire-clay bricks
or tiles, which may have glazed surfaces or otherwise so as to retain or
reflect the heat and throw it back on the feed water heater.
The feed water heater before described is fitted with suitable supply
pipes and cocks, also a safety valve and non-return valve from the

page_text: In the line Diagrams shown at Figures 10, 11, 12, 13, 14, 15, 16,
and 17 inclusive, we have endeavoured to show some various forms in
which our Invention may be carried out, but as will be understood these
are vastly open to modification either by reducing or increasing the
number of tubes.
The apparatus for marine boilers shown at Figures 14 and 15, Sheet 2,
may be by preference placed in the smoke box or uptake of such boilers,
or they may be placed in the combustion chamber.
The apparatus shown at Figures 16 and 17, Sheet 2, may be placed.
at the end of locomotive boilers and in the smoke box thereof, and we
would have it understood that an apparatus constructed according to our
Invention may be composed of one or any number of tubes according to
the purpose to which they may be applied, and the methods shown at
Figures 1 and 3 illustrate a suitable mode of connexion.
Behind the pipes A we in some instances place terra cotta or fire-clay
bricks or tiles, which may have glazed surfaces or otherwise, so as to
reflect the heat, as shown in dotted lines R, Figure 2, and throw it back
on the feed water heater.
Having now fully described and ascertained the nature, object, and
purposes of this our Invention and shown how the same may be put
into effect, we would have it understood that we disclaim as our In-
vention all other feed water heaters now in use, but what we claim as
secured to us by Letters Patent as aforesaid is,―
Firstly. The feed water heater and fuel economiser and apparatus
connected therewith for steam boilers, as shown at Figures 1 and 2,
substantially in and for the purpose as described in the before-going
Specification.
Secondly. Placing the feed water heater and fuel economiser in the
combustion chamber or end flue of steam boilers, and protecting same
with a damper in front and fitting reflecting or radiating tiles or other
material behind, substantially as shown at Figure 2 of the accompanying
Drawings and set forth in the before-going Specification.
Thirdly. The feed water heater as shown at Figure 3 of the accom.
panying Drawings, substantially as set forth in the before-going Speci-
fication.

page_text: Fourthly. The feed water heaters as shown by the Diagrams,
Figures 10 to 17 inclusive of the accompanying Drawings, substantially
as set forth in the before-going Specification.
Fifthly. Placing feed water heaters, as shown and described in the
before-going Specification and Drawings, in the smoke box or uptake of a
marine boilers or in the combustion chamber of same, substantially as
set forth.
Sixthly. Placing feed water heaters, as shown and described in the
before-going Specification and Drawings, at the end of locomotive boilers
and in the smoke box thereof, substantially as set forth.
In witness whereof, we, the said Edward Davies and Stephen,
Dawson, have hereunto set our hands and seals, this Third
day of June, in the year of our Lord One thousand eight hundred
and seventy-four.
]