Improvements in Steam Generators and Water Heaters.
Year: 1888

page_text: Date of Application, 10th May, 1888
Complete Specification Left, 11th Feb., 1889
Complete Specification Accepted, 16th Mar., 1889
PROVISIONAL SPECIFICATION.
Improvements in Steam Generators and Water Heaters.
I OLIVER JOSOLYNE ELLIS of 5 Mycence Road Westcombe Park Blackheath in the
County of Kent Engineer do hereby declare the nature of this Invention to be as
follows:-
The object of my Invention is to provide a steam generator or water heater which
is very efficient in rapidly heating the water and raising steam, is simple in con-
struction easily repaired and cleaned and occupies but little ground space.
My Invention is more especially adapted for use as a vertical circular boiler and I
will describe it as such. I provide in the construction of the boiler where the tubes
are to be inserted inclined surfaces at or about right angles to the tubes which are
disposed at an upward angle. These inclined surfaces are preferably constructed by
making the upper part of the fire box or combustion chamber and the parts of the
ascending flue and of the outer side of the water space or outer skin where the tubes
are to be inserted of corrugated plates which may be formed after the manner of what
are known as Fox's corrugated tubes but preferably with the sides of the corrugations
(in which the holes for the tubes are made) straight for a distance corresponding with
the diameter of the tubes. The tubes are inserted into the holes formed for them in
those of the inclined sides of the corrugations in the top of the fire box or combustion
chamber which are presented towards the furnace fire and the said tubes extend
upward at an angle through the water space and their upper ends are inserted into
the holes formed for them in the inclined surfaces of the corrugations of the outer
shell which are presented upwards. Other tubes are at their lower ends inserted into
the holes formed for them in the inclined surfaces of the outer shell which are
presented downwards and these latter tubes pass at an angle upwards through the
water space and are inserted at their upper ends in the holes made for them in those
of the inclined surfaces of the corrugations in the ascending flue above the fire-box
which are presented upwards.
The corrugated part of the outer skin through which the tubes open is covered by a
casing through which access can be had to the tubes for cleaning or repair and the
space within this casing constitutes a second combustion chamber or smoke box. The

page_text: products of combustion from the furnace ascend through the first named tubes and
then pass into the second combustion chamber or smoke box and therefrom pass up
through the last named set of tubes and so to the chimney.
There may be any number of corrugations or inclined surfaces according to the
number of rows of tubes to be used and one inclined surface may if desired be common
to two or more rows of tubes. The boiler or part of it may be surrounded by a casing
open at top to the external air and open at bottom to the ash pit so that air may he
passed to the fire which air has been heated by contact with the sides of the boiler.
The upward flue is of course closed to direct upward current to the chimney so that
the products of combustion from the fire are compelled to pass to the chimney through
the tubes as described.
The closure may be effected by a water space extending across the upward flue
between the sets of tubes or by a block or closure which can be raised or lowered to
cut off the communication with the fire of any number of tubes as required so as to
regulate the heating of the boiler, or a plate may be arranged as a valve to turn on
trunnions (acting in the same manner as a common throttle valve) so that when the
said valve is closed the products of combustion pass from the fire through all the
tubes as before mentioned and when the said valve is open the said products pass
directly to the chimney without passing through the tubes.
There may be spaces at intervals between the tubes in the water space to allow of
cleaning their exteriors.
Dated this 10th day of May 1898
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C.,
Agents for the said Oliver Josolyne Ellis.

page_text: I OLIVER JOSOLYNE ELLIS of 5 Mycence Road Westcombe Park Blackheath in
the County of Kent 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 :-
The object of my Invention is to provide a steam generator or water heater which
is very efficient in rapidly heating the water and raising steam, is simple in con-
struction, easily repaired and cleaned and occupies but little ground space.
My Invention is more especially adapted for use as a vertical circular boiler and I
will describe it as such, with reference to the accompanying drawings-Figure 1 of
which is a vertical section of a vertical boiler constructed according to my invention.
Figure 2 is a similar view provided with an arrangement of pipes for heating the
feed water and with means for regulating the draught. Figure 3 is a part elevation
and part vertical section illustrating a modification in the arrangement of the tubes
and Figure 4 is a horizontal section of the same the section being taken along the
line 1-2 in Figure 3.
As shown in Figure 11 provide in the boiler where the tubes are to be inserted
inclined surfaces a at or about right angles to the tubes which are disposed at an
upward angle. These inclined surfaces are preferably constructed by making the
upper part of the fire box or combustion chamber c and the parts d of the ascending
flue and also the outer side of the water space or outer skin at e of the boiler where
the tubes are to be inserted of corrugated plates which may be formed after the manner
of what are known as Fox's corrugated tubes, but preferably with the sides of the
corrugations (in which the holes for the tubes are made) straight for a distance corre-
sponding with the diameter of the tubes b. The tubes bare inserted into the holes
formed for them in those of the inclined sides a of the corrugations in the top of the
fire box or combustion chamber c which are presented towards the furnace fire and
the said tubes extend upward at an angle through the water space and their upper
ends are inserted into the holes formed for them in the inclined surfaces a¹ of the
corrugations of the outer shell e which are presented upwards. Other tubes b' are at
their lower ends inserted into the holes formed for them in the inclined surfaces a² of
the corrugations of the outer shell e which are presented downwards, and these latter
tubes pass at an angle upwards through the water space and are inserted at their
upper ends in the holes made for them in the inclined surfaces a³ of the corrugations
in the ascending flued above the fire box which are presented upwards. The
corrugated part of the outer skin or shell through which the tubes open is covered by
a casing through which access can be had to the tubes for cleaning or repair and the
space g within this casing constitutes a second combustion chamber or smoke box.
The products of combustion from the furnace A ascend from the combustion
chamber c through tubes into the second combustion chamber or smoke box g
and therefrom pass up through the tubes b¹ into the flue d and so to the chimney.

page_text: There may be any number of corrugations or inclined surfaces according to the
number of rows of tubes to be used and one inclined surface may if desired be
sufficiently broad to accommodate two or more rows of tubes. The boiler or part of
it may if desired be surrounded by an additional casing open at top to the external
air and open at bottom to the ash pit so that air passing through the space surrounded
by this casing will become heated by contact with the sides of the boiler before
entering the furnace.
The upward flue d is of course closed to direct upward current from the furnace A
to the chimney by the partition or closure so that the products of combustion from
the fire are compelled to pass to the chimney through the tubes as described. The
partition or closure has shown in Figure 1 consists of a water space extending across
the upward flue between the sets of tubes and whilst in the arrangement illus-
trated by Figure 2 the partition or closure consists of a block which can be raised or
lowered by means of the chains i and lever so to regulate the draught by cutting off
the communication with the fire of any number of the tubes as required so as to
regulate the heating of the boiler..
Or instead of the block h a plate may be arranged -as a valve to turn on trunnions
(acting in the same manner as a common throttle valve) so that when the said valve
is closed, the products of combustion will be caused to pass from the fire through all
the tubes as before mentioned and when the said valve is open the said products will
pass directly to the chimney without passing through the tubes.
In the space surrounding the outer shell of the boiler and enclosed by the jacket f
I may arrange a coil of pipes as shown at k in Figure 2 through which pipes the
water for supplying the boiler is caused to pass whereby it becomes heated before
entering the boiler and thus effects an economy in the use of fuel, or the steam may
be caused to pass through a similar coil on its passage to the engine and thus be
superheated.
The tubes instead of being arranged in the space g as shewn may themselves
constitute the casing, their convolutions being then arranged closely together. In
this case, the casing as formed by the tubes may be raised and lowered to give access
to the tubes by making the inlet and outlet. for water or steam with a telescopic
connection as shown in dotted lines in Figure 2 with respect to the inlet, the outlet
being similarly arranged, but it is not shewn on the drawing.
In the modification illustrated by Figure 3 the plates in which the tubes are
inserted are not corrugated as in the arrangement hereinbefore described. The
upper part of the furnace A constituting the combustion chamber a is conical the
inclination of the sides of the cone being at about right angles to the tubes b
the lower ends of which are inserted in holes therein. The upper ends of the tubes b
enter corresponding holes in one side of an angular recess or recesses g constituting_a.
second combustion chamber or chambers formed in the outer skin of the boiler.
holes provided in the other angular side of this recess the lower ends of the tubes ¹
are inserted the upper ends of which tubes enter holes in the conical bottom of the
uptake or flue d. The recess or recesses g is or are enclosed by doors or covers / to
facilitate access to the tubes for cleaning or repairs.
In
As in the arrangements hereinbéfore described the products of combustion are com-
pelled to pass through the tubes bb to the uptake d on their way to the chimney.
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. In vertical steam generators or boilers the combination of a combustion chamber
over the furnace a flue or uptake separated therefrom by a water space or partition
an intermediate chamber formed round the outer skin of the boiler and tubes con-
necting the said chamber with the combustion chamber and the flue or uptake
substantially as herein before described with reference to the accompanying drawings.
2. The combination in vertical steam generators or boilers of a combustion
chamber over the furnace a flue or uptake separated therefrom by an adjustable block

page_text: or valve an intermediate chamber formed on the outside of the skin of the boiler and
tubes connecting the said chamber with the combustion chamber and the flue or
uptake the passage of the products of combustion through the tubes being regulated
as required by covering more or less the mouths of the tubes by the adjustable block
substantially as and for the purpose hereinbefore described.
3. The combination with either of the arrangements hereinbefore described and
claimed by the two preceding claiming clauses of feed water heating or steam super-
heating tubes arranged in the intermediate space between the combustion chamber and
the flue or uptake or constituting themselves a jacket substantially as hereinbefore
described with reference to the accompanying drawings.
4. The general constructions combinations and arrangements of parts constituting
improvements in vertical steam generators or boilers substantially as hereinbefore
described and illustrated by figure 1 by figure 2 and by figures 3 and 4 of the
accompanying drawings.