Improvements in Steam Boilers.
Year: 1899

page_text: wate or Application, 23rd May, 1899-Accepted, 29th July, 1899
COMPLETE SPECIFICATION.
Improvements in Steam Boilers.
I, GEORGE KINGSLEY, of 58, Fort Street, Montreal, Province of Quebec and
Dominion of Canada, Mechanical Engineer, 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 object of this invention is to provide a new and improved boiler, which is
simple, durable and safe in construction, readily accessible in all its parts for
conveniently making repairs and arranged to utilize the heat emanating from the
burning fuel to the fullest advantage, to render the use of the boiler as economical
as possible and at the same time insure a rapid generation of steam.
The invention consists of novel features and parts and combinations of the
same, as will be fully described hereinafter and then pointed out in claims.
A practical embodiment of my invention is represented in the accompanying
drawings forming a part of this specification, in which similar characters of
reference indicate corresponding parts in all the views.
Figure 1 is a longitudinal sectional elevation of the improvement, on the
line 1-1 in Figure 2;
Figure 2 is a transverse section of the same, on the line 2-2 in Figure 1;
Figure 3 is a sectional plan view of part of the improvement, on the line 3-3
in Figure 1;
Figure 4 is an enlarged side elevation of a side water tube, part being in section;
and
Figure 5 is a plan view of part of the crown sheet, with the supporting stay
removed.
The improved boiler is provided with an outer shell A and an inner shell B.
The inner shell B has a longitudinally extending crown sheet B¹, supported
by stay bolts C from the curved top of the outer shell A, and stay bolts C₁ are
preferably used, to connect the sides and curved bottoms of the outer and inner
hells with each other, as is plainly indicated in the drawings.
In the inner shell B is arranged a horizontally-disposed partition D, preferably
f fire-brick, supported on suitable transverse angle irons E, supported at their
nds on longitudinal L-shaped rails E attached to the side walls of the inner
hell B, as indicated in Figure 2. The partition D extends from the front end
f the boiler to within a short distance of the rear end thereof, to form lower and
pper compartments F, F¹, connected with each other at the rear end of the boiler
an opening F2, left between the end of the partition D and the rear end of
e boiler.
In the forward portion of the lower compartment F. is arranged a fire-box G,
ving the usual grate, on which is burned suitable fuel; and in the rear of the
ate extends a bridge wall H, made of transverse pipes secured to the side walls
the inner shell, to establish communication between the water compartment
d the sides of the boiler.

page_text: The forward end of the upper compartment F¹ connects with a smoke box I,
opening at its top into a smoke stack J, for carrying off the smoke and gases.
The smoke box I is provided at its entrance opening with a deflector I', located
at the middle of the forward end of the compartment F' below the stack J, so
that the gases are deflected to the sides of the smoke box before passing up into
the same and to-the stack J. By this arrangement, the smoke and gases are
more evenly distributed in the upper compartment F1 and somewhat retarded
therein, to insure a full utilization of the heat.
From the side walls of the inner shell B within the lower compartment F,
extend horizontally, the water tubes K, preferably made conical, and closed at
their inner ends, as is plainly shown in Figure 4, the outer or larger ends being
formed with external screw threads K' for screwing in the threaded side walls of
the inner shell B.
It is evident that by having the water tubes K made conical, the steam generated
in the tubes K rises to the upper wall, and as the wall is inclined, the steam
travels along the side wall, to finally pass into the water compartment at the side
of the boiler, and then up into the steam compartment in the upper portion of
the boiler. Any sediment that passes into a tube K readily flows out of the
same at the inclined bottom thereof, back into the water compartment, to finally
settle in the bottom thereof to be removed therefrom from time to time through,
suitable man-holes in the ends of the boiler.
From the crown sheet B¹ in the upper compartment F1, depend water tubes L,
preferably made cylindrical in shape, and terminating a suitable distance above the
horizontal partition D. On said partition D are arranged transverse deflectors N
in the space between the top surface of the partition and the lower ends of the
tubes L, so that the heat passing up into the upper compartment F is deflected
in an upward direction by said partitions and among the tubes L, to insure a proper
heating of the water contained therein. It is evident that as the water is heated
in the tubes, it readily rises in the same, and consequently a proper circulation
is established.
In order to permit of properly cleaning the boiler, I provide the rear end with
large doors P, P, for giving access to the inner shell and to the two compart-
ments F, F to remove any cinders or other matter accumulating in the bottom
of the rear portion of the compartment, as well as matter accumulating on the
top of the partition D, and to allow of cleaning the several tubes K.and L with
suitable brushes.
The front of the boiler, is provided with. the usual fire door P2, for giving access
to the fire-box, to introduce the desired fuel; and a door P leads to the ash-pit.
A door P above the fire door P2 gives access to the tubes K in the fire box portion
of the boiler, to permit of cleaning the said tubes whenever desired.
By this arrangement of doors, complete access is had to the several parts of the
inner shell, and access is had by a suitable man-hole Q, to the steam compartment
of the boiler, as will be readily understood by reference to Figure 1.
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 boiler constructed and arranged as and for the purposes herein shown and
specified.
2. The horizontal conical water tubes when projecting from the side sheets
of the boiler into the flame compartment, the inner ends of the conical tubes
being closed and the outer ends open to communicate with the water space.
3. The deflector plates when arranged above the crown sheet and below the
closed ends of the depending. tubes in the upper compartment of the flame space.
4. In connection with boilers having an exterior water and steam space and
an interior flame space, the improvement which consists in the flame space divided
into communicating upper and lower compartments, when said compartments have

page_text: pectively vertical depending tubes and horizontal tubes that communicate
with the exterior water and steam space.
5. In connection with boilers having communicating upper and lower flame
compartments, the improvement which consists in the transversely disposed water
tubes in the upper and lower compartments when said compartments and their
transversely disposed tubes are associated with a transverse deflector at the middle
of the entrance opening to the smoke box at the outlet of the upper compartment.
Dated this 23rd day of May 1899.
A. M. & WM. CLARK,
Chartered Patent Agents, 53, Chancery Lane, London.
A. M. & WM. CLARK,
Chartered Patent Agents, 53, Chancery Lane, London.