Year: 1885

page_text: I EDWARD EDGAR of Cleaton Moor via Carnforth in the County of Cumberland
do hereby declare the nature of said invention to be as follows:-
The invention has for its object the construction of a vertical steam boiler which
will present a heating surface greatly in excess of that usually obtained.
For this purpose I employ an external case of any suitable shape, but I form the
interior water and flue spaces in the following manner. The furnace is placed at
the bottom of the boiler as usual.
Immediately above the furnace, the opposite sides of the outer water space are
connected together by one or more transverse water spaces between which the
products of combustion pass to the flues or smoke spaces above; one or more of
these transverse water spaces is or are connected by a central water space or tube
with a water space preferably formed of two curved plates united by flanges at
their outer edges and forming a double convex chamber which at its upper side is
connected by a central water tube to another similar chamber. Any suitable
number of these double convex chambers connected together as above described may
be employed.
The outer surrounding water space is shaped on the interior so as to follow the
form of the central water spaces leaving a sufficient flue space between them and
forming a central flue at the upper part of the boiler.
The upper central water space is connected by a transverse tube with the
surrounding water space on each side of the central flue and the double convex
chambers may also if desired be connected with the outer water space by suitable
tubes.
The double convex water spaces are of greater horizontal than vertical diameter
being somewhat in the form of a double convex lens but if desired they may be
made more or less nearly or completely spherical.
Man holes are provided at suitable places for cleaning out the flue spaces and
one or more mud holes will be provided as is well understood.
EDWARD EDGAR.
By Harris & Mills,
23, Southampton Buildings,
Agents.

page_text: Improvements in the Construction of Vertical Steam Boilers.
I EDWARD EDGAR of Cleator Moor via Carnforth in the County of Cumberland
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 invention has for its object the construction of a vertical steam boiler which
will present a heating surface greatly in excess of that usually obtained.
For this purpose I employ an external case of any suitable shape, but I form the
interior water and flue spaces in the following manner. The furnace is placed at
the bottom of the boiler as usual.
Immediately above the furnace the opposite sides of the outer water space are
connected together by one or more transverse water spaces between which the
products of combustion pass to the flues or smoke spaces above; one or more of
these transverse water spaces is or are connected by a central water space or tube
with a water space preferably formed of two curved plates united by flanges at
their outer edges and forming a double convex chamber which at its upper side is
connected by a central water tube to another similar chamber.
Any suitable number of these double convex chambers connected together as
above described may be employed.
The outer surrounding water space is so shaped on the interior by the inner
shell of the boiler as to follow the form of the inner water spaces or chambers
leaving a sufficient flue space between them and forming a central flue at the upper
part of the boiler.
The upper central water space is connected by a transverse tube with the
surrounding water space on each side of the central flue and the double convex
chambers are also preferably connected with the outer water space by suitable stay
tubes.
The double convex water spaces are of greater horizontal than vertical diameter
being somewhat in the form of a double convex lens but if desired they may be
made more or less nearly or completely spherical or they may be of other suitable
shape.
Man holes are provided at suitable places for cleaning out the flue spaces and
one or more mud holes will be provided as is well understood.
And in order that the said invention may be more clearly understood and readily
carried into effect, I will proceed aided by the accompanying drawings more fully
to describe the same.
DESCRIPTION OF THE DRAWINGS.
Figure represents a vertical section of a boiler illustrating my invention and
Figure 2 is a horizontal section thereof taken on the line A, B, of Figure 1.
In both Figures of the drawings like parts are marked with similar letters of
reference. a represents the shell of a vertical steam boiler; b represents the
furnace which is placed at the bottom of the boiler as usual, c are the interior water
spaces, and d are the smoke flues.

page_text: Immediately above the furnace the opposite sides of the outer water space are
connected together by a transverse water space c³, or more than one of such water
spaces c¹ might be employed, between or around which the products of combustion
pass to the flues or smoke spaces d above.
This transverse water space c¹ or one or more of such transverse water spaces,
when soveral are employed, is or are connected by a central water space or spaces
or tube or tubes c with a water space preferably formed as shown of two curved
plates e united by flanges el at their outer edges and thickened and threaded at
their inner edges e in order to receive the screwed ends of the tubes c².
These two curved plates e thus form a double convex chamber or water space c³
which at its upper side is connected by a central water space or tube c³ with
another similar chamber c³. Any suitable number of these double convex
chambers connected together as above described may be employed.
The outer surrounding water space c is so shaped on the interior by the inner
shell f of the boiler as to follow the form of the inner water spaces or chambers c
leaving a sufficient flue space d between such shell f and the chambers c and
forming a central flue d¹ at the upper part of the boiler.
The uppermost of the central water spaces or tubes c² is connected by a transverse
tube c with the surrounding water space c on each side of the central flue d¹ and
the double convex water chambers c³ are stayed preferably as shown by connecting
therewith the outer water space c by means of suitable tubes c which serve both
as stays and as water passages.
The water spaces shown in the drawings are of greater horizontal than
vertical diameter being somewhat in the form of a double convex lens but if
desired they may be made more or less nearly or completely spherical, or they may
be of other suitable shape.
Manholes such as a¹ and mud holes such as a are provided for giving access to
the boiler as is usual and if desired similar openings may be formed for cleaning
out the flue spaces d.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, declare that what
I claim is:-
A vertical steam boiler consisting of outer shell a, inner shell f, flues dd, water
spaces or chambers c, c³, and connecting spaces or tubes c¹, c², c*, c, all constructed
and acting in manner substantially as hercin shown and described.