Boilers and the Consumption of Smoke in the Furnaces.
Year: 1885

page_text: Boilers and the Consumption of Smoke in the Furnaces.
I, LUKE BERRY Howard Street, Rotherham in the County of York Engineer
do hereby declare the nature of my said invention for IMPROVEMENTS IN
INTERNAL ARRANGEMENTS OF STEAM BOILERS to be as follows:-—.
THE
My invention of improvements in the internal arrangements of steam boilers,
has for its objects the better utilization of the heat from the furnace; promoting
circulation, and the consumption of smoke.
In carrying out my invention to attain the first two objects before mentioned,
I make the "bridge" of plate iron or steel or other suitable metal of a suitable
shape and having an internal water space.
It may be supported at a little distance from the base of the flue upon firebricks
or by other suitable means, or it may be made to fit the flue up to the proper
height.
The interior or water space is connected or communicates with the water space
of the boiler preferably by means of two curved pipes at or near the bottom, and
two similar pipes at or near the top. The heat from the furnace beating against
the top part of the bridge heats the water in the interior which then rises through
the top pipes and draws in the cooler water from the bottom of the boiler.
Instead of the usual cross tubes, I use the following arrangement, I construct a
hollow disc of suitable proportion to the size of the flue, and I support it in the
centre or thereabouts of the flue by means of short tubular connexions secured to
the flue and which form the means of communication between the boiler and the
interior of the disc.
Sufficient space is left between the edge of the disc, and the flue plates for the
passage of the heated gases and flame from the furnace.
Any desired number of discs may be used.
When the flame passes over the bridge into the flue it strikes against the
first disc, and is thereby impeded and spread against the sides or surface of
the flue; it then passes through the annular space round the disc, and passing
forward impinges against the second disc and with the same result as before, finally
D037

page_text: escaping to the chimney stack. The large area of the disc, and its shallow water
space, causes the water therein to be very rapidly heated and induces a powerful
circulation.
Close at the back of the "water bridge" as before described, I fix a mouth-
piece extending across the flue or thereabouts, to the underside of which one or a
series of pipes is or are fixed; these pipes are carried through the flue, and
terminate in a valve box open to the atmosphere.
The valve or door is under the control of the stoker, and when opened admits
air to the pipes; this air passing through the pipes down the flue, becomes heated
and rarefied and when passed out at the mouth at the top of the bridge facilitates
the combustion of smoke.

page_text: Improvements for Facilitating Water Circulation in Steam
Boilers and the Consumption of Smoke in the Furnaces.
I, LUKE BERRY 1 Howard Street, Rotherham in the County of York Engineer
do hereby declare the nature of my invention for IMPROVEMENTS FOR FACILI
TATING WATER CIRCULATION IN STEAM BOILERS, AND THE CONSUMPTION OF SMOKE
IN THE FURNACES and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement —
My invention of improvements in appliances for facilitating water circulation
in steam boilers, and for promoting the consumption of smoke in boiler furnaces,
relates more particularly to a peculiar construction of tubes crossing the interior
of the flue or flues, and to appliances for conveying warm air to the bridge of the
furnace.
And in order that such. improvements may be clearly understood, I have
annexed a sheet of drawings illustrating same, in which like letters of reference
indicate like parts in any of the figures.
Fig. 1. is a longitudinal section of a flued boiler with all the improvements.
Fig. 2, a section through line y. z.
In carrying out my invention in that part which relates to the circulation of
water, instead of the ordinary cross tubes, I use any desired number of hollow
discs A, of suitable proportions both in diameter and thickness, having tubular
projections B, communicating with the interior of the disc and passing through the
flue plates C, into the water space of the boiler D.
These short tubes form axes upon which the discs can be turned so that their
flat sides may be presented at any desired angle to the current of heat passing
through the flue E; the said tubes are tightly gripped in the glands or con-
nections F, which may be packed with asbestos or other suitable material, and
they may be arranged to pass through the flue either vertically or obliquely,
alternately inclining in opposite directions.
Sufficient space being left in all cases between the edge of the discs and the
flue, for the passage of the flame and heated gases from the furnace G.
When the flame passes over the bridge H into the flue, it strikes against the
first disc, is thereby impeded, and it then spreads and passes through the annular
space round the disc, passes forward and impinges against the second disc being
again spread against the surface of the flue, and finally it escapes to the chimney
stack.
The large area of the disc, and its shallow water space, causes the thin stratum
of water to beat very rapidly, and induces a powerful circulation entering at the
lower tube and passing out at the upper tube.
I make the bridge H, of plate iron, steel or other suitable metal, having an
internal water space; it may be supported upon a base of fire bricks, or it may be
made of sufficient size to fit the flue to the proper height.
The water space, is connected with the water space of the boiler, by means
of two or more curved pipes I and J; the heat from the furnace, heats the top

page_text: portion of the water in the bridge to a higher degree than that in the lower
portion and thus induces circulation.
The second part of my invention relating to the better consumption of smoke
in boiler furnaces is carried out as follows, close to the back of the water bridge
before described and marked H, I fix a receiver K preferably extending across the
flue, and provided with a mouthpiece, a long opening, or a series of perforations, in
its upper edge.
One or more pipes L, communicate with the receiver and are carried through
the flue, and terminate in a valve box M, open to the atmosphere; the valve or
door N, is under the control of the stoker or fireman and when open, air is
admitted to the pipes L, and in its passage through the flue and receiver becomes
heated, and passing out at the mouth mixes with the flame and encourages
combustion.
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. In Steam Boilers having flues, a hollow disc, such as A, connected with the
water space of the boiler, by means of short tubes, such as B, and placed in the
flue of the boiler for the purpose specified and substantially as herein described
and illustrated.
2.-In Steam Boilers, a hollow bridge, (such as H,) the interior of which is made
to communicate with the water space of the boiler by means of two or more pipes
placed in such positions as to cause a circulation when the boiler is in action,
substantially as described and shown.
3. In Steam Boilers, an air receiver having a mouth or apertures, fixed at the
back of the bridge, and communicating with the atmosphere by means of one or
more tubes carried through the flue and opening into a valve box, substantially
as herein before described and shown.
"
4000