A caters.
Year: 1899

page_text: A caters.
I, DONALD BARNS MORISON, of Hartlepool Engine Works, Hartlepool, in the
County of Durham, Engineer, do hereby declare the nature of this invention to
be as follows:-
This invention has for object to provide a surface feed water heater of simple.
arrangement and construction which can be readily fitted to the feed pipe of a
boiler.
In one arrangement, the heater comprises a base plate having water inlet and
outlet passages or branches formed therein which communicate with each
other through a water heating chamber mounted upon the base plate and having
located within it one or more steam coils; these coils are also mounted upon the
base plate, through which their inlets and outlets extend. The water inlet and
outlet may cach be formed with a flanged end for connecting with the main feed
pipe, the axes of the inlet and outlet being preferably in the same plane, thereby
enabling it to be readily fitted to a range of feed pipe. The water heating
chamber preferably consists of a welded tube having flanged ends, the lower of
which is bolted to a seat formed upon the upper side of the base plate whilst
the upper end of the said tube has bolted to it a dome-shaped or other suitable
cover. The water inlet in the base plate communicates with the lower part of
the heating chamber through an aperture in the upper wall of the base plate,
and the water outlet is connected with the upper part of the said chamber through
a central vertical pipe having an open upper end and the flanged lower end of
which is secured around an aperture or opening which extends through the base
plate and is in communication with the water outlet. The lower end of this
central aperture or opening is closed by the flanged end of the steam inlet pipe
which is of less diameter than and extends upwardly through the above men-
tioned open-ended pipe to the upper part of the heating chamber where it is
connected to the inlet branch of a steam distributing box to which the upper ends
of the heating coils are connected; the lower ends of the coils are flanged and
bolted to the base plate and communicate through apertures in the upper wall
thereof with a collecting chamber formed therein. The steam inlet pipe is
fitted with a regulating valve and the outlet from the collecting chamber with
a suitable cock. The upper part of the distributing box is formed with a pro-
jection that fits into a socket in the cover of the heating chamber; by this means
the coils are steadied and kept in position but are left free to expand and
contract.
Conveniently two coils of unequal diameters may be arranged concentrically
around the open ended water-outlet pipe. As will be understood with such an
arrangement, the feed water as it passes upwardly through the heating chamber
traverses the coils from their coolest towards their hottest portions and gradually
becomes heated, whilst, in passing down the open ended outlet pipe, it is brought
into close contact with the steam inlet pipe, the steam in which imparts to it

page_text: a further amount of heat; moreover the water of condensation flows by gravity
through the coils to the discharge when the heater is placed vertically. In some
cases stays depending from. the distributing box are employed to assist in sup-
porting the coils.
It is an important feature of this invention that if it be desired to examine
the coils the chamber with its cover may be removed by merely breaking its
connection to the base and without disturbing any other joints.
I, DONALD BARNS MORISON, of Hartlepool Engine Works, Hartlepool, in the
County of Durham, Engineer, do hereby declare the nature of this invention 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 object to provide a surface feed water heater of simple
arrangement and construction which can be readily fitted to the feed pipe of a
boiler.
In the accompanying illustrative drawings, Figs. 1 and 2 show in vertical
section in planes at right angles to each other a feed water heater according to
this invention; Fig. 3 is a plan with the cover removed, and Fig. 4 is a plan of
the base with the steam coils and other parts removed.
The heater comprises a base 1 with water inlet and outlet passages or branches
2, 3 therein which communicate with each other through a water heating
chamber 4 having located within it one or more steam coils 5 mounted upon the
base and through which their inlets and outlets extend. The water inlet 2 and
outlet preferably are each formed with a flanged end and with their axes in the
same plane, so that the feed water heater may be readily connected to a range
of feed pipe. The water heating chamber 4 shown in the drawings consists of
a tube 8 having flanged ends 8" 8b; the end 8" is bolted to a seat 1" formed upon
the upper side of the base, whilst the end 8 has bolted to it a dome-shaped or
other suitable cover 9. The water inlet 2 in the base 1 communicates with the lower
part of the heating chamber 4 by means of an aperture or opening 2ª in the upper
wall of the base, and the water outlet 3 communicates with the upper part of
the heating chamber by means of a central vertical pipe 10; the upper end 11
of which is open to the heating chambers and the lower end flanged and secured
around an aperture or opening 13 which extends through the base and is in
communication with the water outlet 3. The lower end of this central aperture
or opening 13 is closed by the flanged end of the steam inlet pipe 14 which is
of less diameter than and extends upwardly through the central vertical pipe 10
to the upper part of the heating chamber 4 where it is connected to the inlet
branch 15 of a steam distributing box 16 to which the upper ends 6 of the heating
coils 5 are connected; the lower ends 7 of the coils are flanged and bolted to
the base and communicate through apertures 17 in the upper wall thereof with
collecting chambers 18 formed therein, and connected together by a passage 18".
The steam inlet pipe 14 is fitted with a regulating valve 19 and the outlet from
the collecting chamber 18 with a suitable cock 20. The upper part of the dis-

page_text: tributing box 16 is formed with a projection 21 that fits into a socket 22 in the
cover 9 of the heating chamber 4; by this means the coils 5 are steadied and
kept in position but are left free to expand and contract. Conveniently there
may be two coils of unequal diameters coiled in reverse directions concentrically
around the water outlet pipe 10.
As will be understood the arrangement is such that the feed water as it
passes upwardly through the heating chamber 4 moves over the coils from their
coolest towards their hottest portions and gradually becomes heated, whilst,
in passing down the central vertical outlet pipe 10, it is brought into close con-
tact with the steam inlet pipe 14, the steam in which imparts to it a further amount
of heat; moreover the water of condensation in the coils flows by gravity to the
collecting chambers 18, when the heater is placed vertically. In some cases
stays 23 depending from the distributing box are employed to assist in supporting
the coils.
If it be desired to examine the coils 5 the chamber with its cover may be re-
moved upon breaking the connection to the base and without disturbing any other
joints. If so desired the direction of the water to be heated may be reversed.
Having now particularly described and ascertained the nature of the said in-
vention and in what manner the same is to be performed I declare that what
I claim is:-
1. A feed water heater comprising a base having water inlet and outlet pass-
ages therein in communication with each other through a heating chamber, said
water inlet being in communication with the lower part and the water outlet
being in communication with the upper part of the heating chamber, whereby
the feed water as it passes upwardly through the heating chamber moves over the
steam coils from their coolest to their hottest portions, the arrangement being
such as to be capable of ready connection to a range of feed pipe, substantially
as described.
2. A feed water heater constructed and arranged substantially as described
with reference to and shown in the accompanying drawings.
Dated this 2nd day of November 1899.
For the Applicant,
W. LLOYD WISE,
46, Lincoln's Inn l'ields, London, W.C., Chartered Patent Agent.