Improvements in Steam Generators.
Year: 1891

page_text: Date of Application, 9th Sept., 1891
Complete Specification Left, 9th June, 1892-Accepted, 9th July, 1892
PROVISIONAL SPECIFICATION.
Improvements in Steam Generators.
We, WILLIAM BROCK and QUINTIN FERGUSON, both of 90 Hill Street,
Glasgow, Bedstead Manufacturers, do hereby declare the nature of this invention
to be as follows:-
Our invention relates to steam generators, and it has for its object to improve
their construction.
Our improved steam generator is made with the usual outer casing or shell and
an interior flue space or fire box. Water surrounds or partially surrounds the
flue and one or more flame tubes is or are led up through the water space and,
preferably, communicate with the top of the flue space. Branch tubes may connect
the flame tubes. Crossing the flue space are one or more horizontal water tubes
which are or may be connected with vertical water tubes extending up to the steam
space at the top of the boiler. The water may partially fill this steam space and
cover the tops of the vertical water tubes. The products of combustion may be
led either straight out from the flue space or the flue may be bent at an angle so
that they may escape in a horizontal or inclined direction.
The water tubes in this arrangement are connected together so as to form,
preferably, a "tee" shape. As the tubes are in the due space they receive the
maximum heat from the fire.
Our improved construction of steam generator may be adapted to any land and
marine boilers of suitable construction.
The improved boiler whilst possessing all the advantages of water tube boilers
does not require expensive building up as with the usual forms of water tube
boilers.
Dated this 8th day of September 1891.
H. D. FITZPATRICK,
Glasgow and London, Agent.
COMPLETE SPECIFICATION.
Improvements in Steam Generators.
We, WILLIAM BROCK, and QUINTIN FERGUSON, both of 90 Hill Street,
Glasgow, Bedstead Manufacturers, 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 :-
Our invention relates to steam generators, and it has for its object to improve
their construction.
Our improved steam generator is made with the usual outer casing or shell and
an interior flue space or fire box. Water surrounds or partially surrounds the flue,
and one or more flame tubes is or are led up through the water space and,
preferably, communicate with the top of the flue space. Branch tubes may connect
the flame tubes. Crossing the flue space are one or more horizontal water tubes
which are or may be connected with vertical water tubes extending up to the steam
space at the top of the boiler. The water may partially fill this steam space and
cover the tops of the vertical water tubes. The products of combustiou may be
led either straight out from the flue space or the flue may be bent at an angle so
that they may escape in a horizontal or inclined direction.
The water tubes in this arrangement are connected together so as to form

page_text: preferably, a "tee" shape. As the tubes are in the flue space they receive the
maximum heat from the fire.
Our improved construction of steam generator may be adapted to any land and
marine boilers of suitable construction.
The improved boiler whilst possessing all the advantages of water tube boilers
does not require expensive building up as with the usual forms of "water tube
boilers.
And in order that our said invention may be properly understood, we have
hereunto appended an explanatory sheet of drawings, showing a small vertical
boiler, constructed in accordance with our invention.
Fig. 1 is a view, showing the shell in section, but the interior of the boiler in
elevation.
Fig. 2 is a vertical section of the boiler.
Fig. 3 is a cross section on the line x-x, Fig. 1.
Fig. 4 is a cross section on the line y―y, Fig. 1.
Referring to the drawings, whereon the same
repeated, indicate similar or like parts :-
reference letters, wherever
a is the boiler shell, b is the furnace, d is a plate forming the roof of the furnace,
and having a central opening d¹ cut in it. Fitted to the plate d is a large
cylindrical fire box or flue c. At the top of the fire box c is a horizontal plate e,
which is shown more particularly at Fig. 4. The plate e has flanged arms e',
which may be riveted to the boiler shell. The flanged arms serve as stays to secure
the plate e and cylindrical fire box e in place. Leading from the top of the fire box
or flue c, is a flame tube. The tube, at its lower end, is connected by branch
tubes g, g', to vertical flame tubes h 7. The flame tubes h, h¹ may pass straight
out from the top of the boiler, as indicated in dotted lines, or be curved over at
their upper ends and connected to the central funnel i. are sorew-plugs, for
cleaning the flame tubes, f; h, h¹. kis the steam space of the boiler.
Fitted across the fire box or flue c, are three or other suitable number of
horizontal water tubes l. Fitted in the horizontal water tubes l, are a series of
vertical water tubes m, which, at their upper ends, project through the stay plate e.
The water level is preferably kept above the top of the tubes m.
With this construction of boiler, the heated gases and products of combustion
first pass into the fire box c, which is surrounded by water. From the fire box the
gases etc., escape down the tube f, also in the water space, and, by the branch
tubes g, g', to the vertical flame tubes h, h', from which they escape by the funnel i.
Water circulates through the tubes m and I, which are fitted, as shown, in the
hottest part of the fire box c.
The combination of water tubes and flame tubes, as shown, gives a great amount
of evaporating surface.
Our construction of boiler can be applied equally well to other forms of land and
marine boilers.
The number of water tubes, and flame tubes, can be increased or decreased, as
desired, in order to suit different constructions of boilers.
The improved.boiler has the merits of cheapness and simplicity of construction,
combined with great efficiency as a steam generator.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim ia:-
A steam generator, constructed substantially as hereinbefore described, with
reference to the drawings annexed.
Dated this 8th of 1800