Improvements in Steam Generators, and in Furnaces therefor.
Year: 1894

page_text: Date of Application, 25th Apr., 1894
Complete Specification Left, 23rd Jan., 1895-Accepted, 13th Apr., 1895
PROVISIONAL SPECIFICATION.
Improvements in Steam Generators, and in Furnaces therefor.
I, JAMES EDGAR GREEN of Cass Avenue, St. Louis, Missouri, U.S.A., Pattern
Maker, do hereby declare the nature of this invention to be as follows:-
This invention relates to that class of boilers in which oil is used for fuel. A
combustion chamber provided with vertical water tubes is held centrally within the
outer shell of the generator by brackets. There is an aperture or pipe leading
from the shell to the combustion chamber by which oil in the ignited state or oil
mixed with steam may be sprayed into the combustion chamber.
The bottom plate of the boiler is furnished with holes immediately underneath
the water tubes of the combustion chamber for the purpose of access to the tubes
said boles being closeably by screw plugs.
The products of combustion are carried to a chamber leading to the chimney by
two concentric circles of flue tubes. The larger number of the water tubes are
enclosed within the inner of the two circles of flue tubes, there being one circle of
water tubes arranged between the two circles of flue tubes.
Dated this 25th day of April 1894.
THOMAS R. SHILLITO,
89, Chancery Lane, London, W.C., Agent for the Applicant.
I, JAMES EDGAR GREEN of Cass Avenue, St. Louis, Missouri, U.S.A., Pattern
Maker, 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 that class of steam generators in which oil is used
for fuel.
In the drawing
Fig. 1 shews the generator of this invention in vertical section through line I-I
of Fig. 2.
Fig. 2 is a horizontal section through line 11-11 of Fig. 1.
Fig. 3 a horizontal section through line III-III of Fig. 1.
6 are
1 is the metal stand of any suitable form with a central opening 2 for access to
the bottom plate of the generator and is provided with a flange 1". 3 is a combustion
chamber surrounded by water at the top bottom and sides and supported on
brackets 4. 5 is the aperture through which the ignited jet of oil enters.
tubes for the discharge of the products of combustion from the combustion chamber
and also for heating purposes. The combustion chamber has a top 7, bottom 8,
and sides 9 parallel with the outer shell 10. 11 are vertical tubes focated in the
middle of and passing through the combustion chamber thus communicating with
the water space above and below said chamber. It is clear that there will be
a very rapid upward passage of the water through these tubes and also that water
Price 8d.]

page_text: will be abundantly supplied to their lower ends from the water space beneath, the
water passing down thereto between the shell and the combustion chamber.
11" are
an outer series of water tubes discharging upwardly between the two series of flue
tubes 6. Any suitable ignited jet of coal or other oil or combustible fluid may be
projected through the neck 5 so as to fill the combustion chamber with flame. No
novelty is claimed for this jet. A very efficient jet or flame is produced by means
of a steam injector in conjunction with a supply of the combustible fluid. In such
case the steam and combustible fluid mingle in the injector and with the air outside
the injector but no novelty is claimed in the injector and I do not confine myself
to any special device for throwing a combustible jet into the combustion chamber.
The bottom plate 12 of the generator has a hole in line with each of the tubes 11
by which access may be had to the inside of said water tubes, said holes being.
closeable by screw plugs 13. The flue tubes 6 pass through the top plate 7 of the
combustion chamber and the top sheet 14 of the generator and are secured in
place by expanding or other suitable known way. These tubes discharge into a
smoke chamber 15 and the gases escape through a chimney 16 into the open air.
17 is a man hole or hand hole by which access is had to the interior of the generator.
No steam or water pipes are shewn as they do not form any part of the invention.
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 :-
The combination of the stand 1 having a horizontal flange 1", the outer shell 10
supported on said flange and having a bottom plate 12 and a top plate 14, the
dome 15 having a chimney 16, the combustion chamber 3 having a top 7 a
bottom 8 and sides 9, the brackets 4 by which the combustion chamber is
supported, the neck 5 connecting the outer shell with the combustion chamber, the
vertical water tubes 11 inserted in and passing through the middle of the combustion
chamber, the double series of flue tubes 6 surrounding the tops of the tubes 11
and passing through the top plate of the combustion chamber and through the
top plate of the outer shell, and the outer series of tubes 11* located in and passing
through the combustion chamber and discharging upwardly between the series of
tubes, substantially as described and shewn.
Dated this 23rd day of January 1895.
THOMAS R. SHILLITO,
89, Chancery Lane, London, W.C., Agent for the Applicant.