IMPROVEMENTS IN THE 'CONSTRUCTION OF VERTICAL STEAM BOILERS
Year: 1882

page_text: LETTERS PATENT to Alfred Horatio Bell, Sharpe, Draughtsman, and Frederick
Palmer, Engine Driver, both of Lincoln, in the County of Lincoln. for an
Invention of "IMPROVEMENTS IN THE 'CONSTRUCTION OF VERTICAL STEAM
BOILERS."
t
PROVISIONAL SPECIFICATION left by the said Alfred Horatio Bell 'Sharpe
and Frederick Palmer at the Office of the Commissioners of Patents on the
14th December 1882.
·
1
ALFRED HORATIO BELL SHARPE, Draughtsman, and FREDERICK PALMER,
Engine Driver, both of Lincoln, in the County of Lincoln, "IMPROVEMENTS IN
THE CONSTRUCTION OF VERTICAL STEAM BOILERS'
"
The objects of this Invention, which relates to certain improvements in the
construction of vertical steam boilers, are, to ensure a constant circulation of the
water therein, and a more advantageous utilization of the furnace heat.
In carrying this Invention into effect, there is rivetted within the fire box, and
above the fire hole, a horizontal, cylindrical, or conical water vessel, which is in
communication with the water space surrounding the fire box as hereinafter
described, and has passing through it in the direction of its length, a number of
horizontal fire tubes, or a horizontal fire flue or flues, which lead from the fire box
to the smoke box and chimney, and at their exit ends pass through a 'tube plate
rivetted outside the shell of the boiler.
The lower part of the said horizontal water vessel is connected with a lower part
of the water space surrounding the fire box by means of a
-shaped cross
water tube arranged at right angles to the direction of the said horizontal water
vessel, or by means of an inclined water tube, and the upper part of the said
water vessel is connected with the water space above the crown of the fire box by
means of a circular or elliptical water tube; and by this connection of the said
water vessel with the water space surrounding the fire box there is kept up a
continuous circulation of the water in such space, and within the said vessel and
round and about the said horizontal fire tubes or flues.
In one modification, that portion of the fire box which is immediately. opposite
the smoke box is connected with the boiler shell which at such part is cut away,
and the opening thus formed is provided with a fire brick door, which gives
convenient access for cleaning the fire tubes.
F.
12

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Alfred Horatio Bell Sharpe and Frederick Palmer in the Great
Seal Patent Office on the 13th June 1883.
ALFRED HORATIO BELL SHARPE, Draughtsman; and FREDERICK PALMER,
Engine Driver, both of Lincoln, in the County of Lincoln." "IMPROVEMENTS IN 5
THE CONSTRUCTION OF VERTICAL STEAM BOILERS
"
This Invention relates to improvements in the construction of vertical steam
boilers, and its objects are to ensure an efficient circulation of the water therein,
and a more advantageous utilization of the furnace heat.
The accompanying drawings illustrate the principle of our Invention, and 1
various modifications of how we purpose carrying the same into practical effect.
The Invention consists essentially, in fixing within the fire box of vertical steam
boilers, a horizontal, cylindrical, conical, elliptical, or other such shaped, water
vessel, which is in cominunication with the water space surrounding the fire box,
and has passing through it, in the direction of its length, a series of horizontal fire
tubes, or one or more horizontal fire flues, which lead from within the fire box to
the smoke box and chimney, which are situated at one side of the shell of the
.boiler.
4
"
Figs 1 to 3; 4 to 6; 7 to 9; 10 and 11, of the accompanying drawings,
illustrate sectional views of the modifications of our Invention which are hereinafter
described.
In all of these Figs; 1 represents the fire-box; 2, the transverse water vessel;
3, the water space surrounding the fire-box; 4, the through fire tubes; 5, tlie
through fire-flues; and 6, the smoke box and chimney.
The length of the water vessel 2, is made less than the inside diameter of the
fire-box 1, and one of its ends is made of a tube plate 7, and its other end is left
open, and is rivetted to the fire-box shell. Opposite the open end of the water
vessel, another tube plate 8, is rivetted on the outside of the boiler shell 9, so as to
be parallel with the tube plate 7. The tube plates, 7, and 8, are connected by a
series, of horizontal fire tubes 4, which pass longitudinally through the water
Vessel as illustrated in Figs 4 to 11, or the tube plates. 7, and 8, may be connected
by one or more fire flues. In Figs 1 to 3, the outer end of a fire flue 5, is shown
as rivetted directly to the boiler shell 9.
i
"
When the communication between the fire-box, and the smoke box and chimney
consists of a series of fire tubes, as in Figs 4 to 11,; immediately opposite, the tube
plate 7, there is formed an aperture 10, by cutting away: opposite portions of..the
¡plates of the fire-box and boiler shells, and rivetting the cut edges of the plates
with a solid or other iron ring 11, between them; and the aperture thus formed is
fitted with a door 12, lined with firebrick or other refractory material. The exit
ends of the fire tubes open into a smoke box 6, which covers the tube plate 8, and
the smoke box is formed with a door 13, which is opposite the door.12. By means
of the doors 12, 13, the tubes 4, can be easily inspected and cleaned when.
necessary. In Figs 1 to 3, which illustrate a single fire flue 5; adapted to the
water vessel, the provision of the doors is not shown, and the chimney leads direct
from the flue 5, instead of from the smoke box as in the other modifications
illustrated.
27.10
The lower part of the water vessel 2, is connected with the water space
surrounding the fire box by means of a T-shaped, or of one or more inclined water
tubes 14. The tubes 14, may be in the same plane as the water vessel, as
represented in Figs 1 to 9, or in a plane at right angles thereto, as represented in

page_text: Figs 10 and 11. The upper part of the water vessel is connected with the water
space above the crown of the fire-box by means of a circular or elliptical water
tube 15. By this connection of the water vessel with the water space surrounding
the fire-box, there is ensured a continuous efficient circulation of the water in
such space, and within the said vessel, and round and about the fire tubes
or flues.
16, represents a firebrick baffle which is arranged round the lower half of the
space between the end 7, of the water vessel, and the adjacent side of the fire box,
so as to compel the heated gases to envelope the water vessel, and impinge against
the fire-box crown, before passing through the tubes or flues into the smoke-box
and chimney.
In the modifications illustrated in Figs 1 to 3, and 7 to 9, the water vessel 2, is
shown of a conical shape; in Figs 4 to 6, it is shown as of a cylindrical shape;
and in Figs 10 and 11 as of an elliptical shape.
Having thus particularly described and ascertained the nature and objects of our
said Invention, and in what manner the same is to be or may be performed or
carried into practical effect we would observe in conclusion that what we consider
to be novel and original, and therefore claim as constituting the Invention secured
to us by the herein before in part recited Letters Patent is :-
The construction of vertical steam boilers with a vertical fire-box having an
inner projecting horizontal water vessel which is in communication with the water
space surrounding the fire-box and is traversed by a series of fire tubes or by one
or more fire flues leading from within the fire box to an external smoke box and
chimney; substantially as herein before described with reference to the various
modifications illustrated on the accompanying drawings.
In Witness whereof, we, the said Alfred Horatio Bell Sharpe, and Frederick
Palmer, have hereunto set our hands and Seals, this second day of May,
in the year of our Lord one thousand eight hundred and eighty three.