Apparatus for Heating Water and other Fluids by Steam.
Year: 1889

page_text: Date of Application, 1st Apr., 1889
Complete Specification Left, 28th Dec., 1889-Accepted, 1st Feb., 1890
PROVISIONAL SPECIFICATION.
Apparatus for Heating Water and other Fluids by Steam.
GEORGE ERNEST SHERWIN Central Works, Alma Street, Aston, near Birmingham
in the County of Warwick, Engineer do hereby declare the nature of this invention
to be as follows:-
My invention has reference to apparatus for heating water and other fluids by
steam, consisting essentially of a casing in which is enclosed a coil or coils of pipe.
My invention consists in constructing and arranging the parts of the said heating
apparatus in the following manner :-
The casing is provided with a chamber or chest for steam, this said chamber having
one or more apertures, around which, within this said chamber, a flange is formed;
at the bottom of this said chamber a waste water pipe is fixed. Within this chamber
one or more coils of pipe are placed, and in the case of more than one coil, two
chambers are usually formed in a convenient part of the casing. One of theso
chambers forming a reservoir for the water or other fluid to be heated, the
other chamber forming a reservoir for the heated fluid. One end of each coil is
connected with the cold water chamber, the other end of each coil is connected with
the hot water. chamber.
The action of the apparatus is as follows:-Steam having entered the steam
chamber, entirely fills the same, surrounding the coils of pipe. The fluid to be heated
enters the coils at one end, and passing through the same becomes heated, and in this
condition leaves the coils at the other end. The water resulting from condensation of
steam in the steam chamber, falling to bottom of this chamber, is carried away by the
waste water pipe; and this water is prevented from entering the apertures thro'
which the steam enters or leaves the steam chest, by reason of the flanges surrounding
these apertures; and by the use of these flanges the heater may be placed in any
position, vertical, horizontal, or oblique.
Dated this Twenty ninth day of March 1889
COMPLETE SPECIFICATION.
Apparatus for Heating Water and other Fluids by Steam.
GEORGE ERNEST SHERWIN Central Works, Alma Street, Aston, Birmingham, in
in the County of Warwick, 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:—
My invention has reference to apparatus for heating water and other fluids by
steam, consisting essentially of a casing in which is enclosed a coil or coils of pipe.
My invention consists in arranging the parts of the said heating apparatus in the
following manner :-
The casing is provided with a chamber or chest for steam, the said chamber having"
one or more apertures around which, within this said chamber, a flange is, formed,
at the bottom of this said chamber a waste water pipe is fixed. Within this chamber
one or more coils of pipe are placed; and in the case of more than one coil, two
chambers are usually formed in a convenient part of the casing. One of these
chambers forming a reservoir for the water or other fluid to be heated, the
other chamber forming a reservoir for the heated fluid. One end of, each coil is
connected with the cold water chamber, the other end of each coil is connected with
the hot water chamber.
The action of the apparatus is as follows:-Steam having entered the steam

page_text: chamber entirely fills the same, surrounding the coils of pipe. The fluid to be heated
enters the coils at one end, and passing through the same becomes heated, and in this
condition leaves the coils at the other end. The water resulting from condensation of
steam in the steam chamber, falling to bottom of this chamber, is carried away by the
waste water pipe; and this water is prevented from entering the apertures through
which the steam enters or leaves the steam chest, by reason of the flanges surrounding
these apertures; and by the use of these flanges the heater may be placed in any
position, vertical, horizontal or oblique.
The improvements comprised in my present invention are shown in the accom-
panying sheet of drawings.
Figures 1 and 2 represent respectively a plan and section of one form of heater ;
Figures 3 and 4 represent respectively longitudinal and transverse section of another
form of the heater.
In Fig. 1. the cover of one water chamber is removed that the internal arrange-
ment of these chambers may be the better explained. Referring to Figs. 1 and 2,
the body of heater comprising steam chest A, cold water chamber B, and hot water
chamber C, is generally made in one piece; the steam chest A is provided with one
or more openings D, for the entrance and exit of exhaust or live steam; around these
openings, and within the steam chest, projecting flanges are formed, in such manner
that the waste water resulting from condensation of steam, is prevented from flowing
through these openings into steam pipes, on its passage to the outlet E provided at
the lowest part of steam chest for escape therefrom of this waste water; and the sides
of this steam chest taper, or incline, towards this outlet E. (This is more fully shown
in Fig. 3.) Within this steam chest the coil or coils of pipe H are placed side by
side, one end of each coil communicates with cold water chamber B, the other end of
each coil communicates with hot water chamber C. It is not necessary that the
particular chambers marked B. and C. on drawing be used for cold and hot water
respectively, either can be used for cold or for hot water as most convenient. At the
lowest point of these chambers outlets J. are provided, to each of which a valve or
cock is attached. The bottom and sides of chambers B. and C. are tapered, or inclined,
towards the outlets J. in such manner that the impurities contained in the water, being
deposited in these chambers, will fall towards these outlets J; whence these impurities
are discharged through the cocks or valves. K. and L. are respectively the inlet for
cold water and outlet for heated water. The covers M. are bolted on to chambers B.
and C; and cover N is bolted on to steam chest, and either can be removed when
required.
All the entrances and exits for steam and water are so disposed, that the covers to
water chambers and steam chest can be removed for inspection of the same, without
disturbing any pipe or pipe joints.
In Figs. 3 and 4. the same principle is carried out as in Figs. 1 and 2, but in a
different manner, although the description given above will apply to Figs. 3 and 4,
with the exception that instead of two water chambers being provided, only one is
provided, and that for hot water; but a cold water chamber may also be provided if
required. Reference to letters in Figs. 3 and 4 as follows:-A the steam chest,
C. hot water chamber, D.-steam openings, E.-outlet for waste water, H.-coil
of pipe, J.-outlet to hot water chamber, K and L.-inlet for cold and outlet for
hot water respectively, M.-cover to water chamber, N.-cover to steam chest.
In Fig. 3. the inlet for water and opening for steam is shown attached to steam
chest cover N, but this inlet and opening can be formed on side of steam chest, in
such manner that feed water and steam pipes need not be disturbed when steam chest
cover is removed.
Figure 5. is an enlarged view showing the form of joint used for securing ends of
coils to body of heater, when it is desirable that the coils should be readily replaceable
if necessary H. is the end of coil which is screwed, and two lock nuts A are fitted
thereon; B. is a flanged plug having a nut C. screwed on one end. This plug is fixed
in the boss, formed in body of heater to receive same, by screwing nut C. tight on
plug B. when this plug has been fitted in the boss. The flange of plug B is placed

page_text: in the steam chest, and the nut C is placed in water chamber. The hole in plug B is
larger in diameter than the outside of end of coil, leaving a space all round the end
of coil into which white metal, lead, or other suitable material is run or placed, after
plug B. is screwed tight in body of heater, and coils placed in their working position.
The object of forming joint in this way is this :-The two ends of each coil are difficult
to make so perfectly parallel as to allow a steam joint to be soundly made, when the
plugs B are screwed, brazed, or otherwise secured to ends of coils; by leaving a space
between end of coil and inside of plug, and running metal in after plugs and coils
are fixed in position, a sound joint is made; notwithstanding that the two ends of
coil may not be parallel. When it is required to replace coil, the nuts C can be
unscrewed from plugs B, and these plugs and coils can then be withdrawn from
casing.
In the description given above, it is stated that the water to be heated passes
through the coils; but when large quantities of water are to be heated, it may be
more advantageous to pass the steam through the coils, and let the water surround
same.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
(1). In a feed water heater in which the water is heated by passing through coils
surrounded by steam, the use of a chamber or reservoir into which the water is
discharged after having been heated; the said chamber being provided with an
outlet for discharge of impurities deposited from the water, in addition to the water
outlet.
(2). In a feed water heater in which the water is heated either by passing through
coils surrounded by steam, or by surrounding coils containing steam; the use of
chambers for containing steam and water, the said chambers having the bottom and
sides thereof tapering or inclining towards an outlet for the waste water resulting
from condensation of steam, or impurities deposited from water.
(3). In a feed water heater in which the water is heated either by passing through
coils surrounded by steam, or by surrounding coils containing steam; the arrange-
ment of feed water openings in such manner that the covers to water chambers may
be removed without disturbing the connecting water pipes.
(4). In a feed water heater in which the water is heated by passing through coils
surrounded by steam, the formation around exhaust steam entrance and exit within
steam chest, of an unperforated flange for the purpose described, the said steam
entrance and exit being left open and free, that exhaust steam may have a straight
and uninterrupted passage to and from steam-chest.
Dated this 26th day of December 1889.