Year: 1887

page_text: I WILLIAM LAND of The Grantham Crank & Iron Company Limited Grantham
in the County of Lincoln Works Manager do hereby declare the nature of this
Invention to be as follows:-
This Invention relates to vertical steam boilers and has for its object to give a large
amount of heating surface arranged so as to give the most efficient and economical
results in working whilst the boilers are readily and economically constructed they
being simple in construction and all the parts are readily accessible for examining and
cleaning and there is a very good circulation of water.
The fire box has a flat or slightly curved or dome shaped top from which a plain
flue or short tube leads directly to a combustion and tube chamber and the products
of combustion pass therethrough into the tube and combustion chamber and amongst
the tubes and afterwards escape through a passage at the opposite side to the smoke
box and chimney.
The tube and combustion chamber is formed wholly inside the cylindrical shell
and there is a water space between its bottom and the top of the fire box.
The tubes used are what are commonly known as "Field" tubes, or tubes solid
welded at one end, they are fixed vertically in the crown of the tube and combustion
chamber and hang down to within a short distance of the bottom thereof.
The shell of the body of the boiler has preferably at top a dome shape or is egg
ended and the top may be stayed with Gussett stays to the sides of the shell or by
long screwed bolts to the crown of tube and combustion chamber-There is an opening
into the fire box on one side of the shell and preferably in a line with the lower portion
of the combustion or tube chamber there is a door for cleaning the smoke box and
chimney are connected to the side of the shell of the boiler preferably a little below
the central part of the combustion and tube chamber.
The field tubes being protected from direct contact with the fire are much less liable
to burn out than they otherwise would be.
1
ลง
1
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1607
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C.,
Agents for the said W. Land.

page_text: Improvements in Steam Generators.
I, WILLIAM LAND of The Grantham Crank and Iron Company Limited Grantham
in the County of Lincoln Works Manager 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 relates to vertical steam boilers and has for its object to provide a
boiler simple in construction and with a large amount of effective heating surface
arranged so as to give the most efficient and economical results as regards the
consumption of fuel whilst the boilers are readily and economically constructed and
all the parts are readily accessible for examining and cleaning and there is a very
good circulation of water.
I will describe my Invention with reference to the accompanying drawings of which
Figure 1 is a vertical central section and Figure 2 is a horizontal section on the
linex of Figure 1. The fire-box A has a flat or slightly curved or dome-shaped
top a from which a plain flue or short tube B leads directly to a combustion and tube
chamber C, the products of combustion passing from the fire-box A through the said
flue or tube B into the tube and combustion chamber C and amongst the tubes D and
afterwards escape through a passage E at the opposite side, to the smoke box F
and chimney G.
The tube and combustion chamber C is formed wholly inside the cylindrical shell
or body of the boiler H and there is a water space I between the bottom of the said
chamber C and the top of the fire-box A. The tubes D used are what are commonly
known as "Field tubes or tubes solid-welded at one end. They are fixed vertically
in the crown or top plate of the tube and combustion chamber C and hang down to
within a short distance of the bottom of the said chamber.
"
The shell or body H of the boiler has preferably a dome shape at top or is egg ended
at that part which may be in large boilers stayed with gusset stays to the sides of the
shell or by long screwed bolts to the crown of tube and combustion chamber C. In
large size boilers the bottom of the chamber may be stayed to the top of the fire-
box A. There is an opening and fire door at J into the fire-box on one side of the shell
and there is a door at c for cleaning, preferably situated in a line with the lower portion
of the combustion or tube chamber C. The smoke box F and chimney G are connected
to the side of the shell of the boiler as shewn in the Drawing. The "Field tubes" D
being protected from direct contact with the fire are much less liable to burn out than
they otherwise would be and being fixed only at one end require less frequent renewals
than would otherwise be the case. The arrangement of the chimney as shewn enables

page_text: it to be used in situations where an ordinary vertical boiler could not be fixed. The
boiler requires but little floor space and there need be no brick setting.
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. A steam generator constructed and arranged or consisting of the combination of
parts, substantially as hereinbefore described and illustrated in the accompanying
drawings.
2. In steam generators the combination of "Field" tubes arranged in communication
with the water space and situated in the combustion chamber substantially as herein-
before described and illustrated in the accompanying Drawings.