Improvements in Water Tube Steam Boilers.
Year: 1895

page_text: Date of Application, 5th Nov., 1895-Accepted, 4th Jan., 1896
COMPLETE SPECIFICATION.
Improvements in Water Tube Steam Boilers.
We JOHN BONNER of 928 F Street Washington District of Columbia United
States of America Master Mechanic and CHARLES W. MOTT of the same place
Commission Broker. and HERMAN HERMANSEN of the same place Restaurant
Keeper 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 improvements in water-tube steam boilers; and it has
for its general object to provide a very cheap, simple, and compact sectional water
tube boiler, in which a thorough circulation may be maintained, and one in which
a great amount of heating surface and large grate area are afforded, and in which
the steam is thoroughly separated from the water. Another object of the invention
is to provide a sectional water-tube boiler embodying such a construction that
rendy access may be had to all of the parts which may be quickly and easily
repaired when necessary.
Other objects and advantages of the invention will be fully understood from the
following description and claims when taken in conjunction with the accompanying
drawing, in which:-
Fig. 1, is a side elevation of the improved boiler within its casing which is shown
in vertical section.
Fig. 2, is a vertical, transverse section of the boiler. taken in the plane indicated
by the line x, x, of Fig. 1.
Fig. 3, is a front elevation of the boiler with the casing in section, and :
Fig. 4, is a rear elevation of the boiler with the casing.in section.
Referring by letter to said drawing:
0
A, indicates the casing of the improved boiler which preferably has its side and
top. walls formed of sheet metal and lined with sheet asbestos a, and its front and
rear walls formed of cast iron and lined with bricks 6 of asbestos and fire clay
and sheet asbestos c; and which also has an opening d, in its top for the connection
of a smoke pipe; B, indicates an ash pan which is arranged. at the bottom of the
casing; C, C, indicate the mud-drums, which are preferably formed of hydraulic
pipe and are arranged adjacent to the side walls of the casing; D, indicates the
grate which is connected to the inner sides of the mud-drumns C, C¹, as shown, and
extends the full length thereof; E, E', indicate the separators which are also
preferably formed of hydraulic pipe and are arranged above the mud-drums about
the proportional distance illustrated, and F, indicates the superheater or steam
drum, preferably of hydraulic pipe, which is of about the proportional diameter
illustrated and is arranged in a position slightly above and between the separators E,
as shown.
Connected to and rising from the mud-drums C, CT, are vertical pipes G, G¹,
which extend upwardly a sufficient distance to form the sides of the fire box H,
where they are coupled to horizontal pipes I, 1', the pipes I, being coupled to the
pipes G, and the pipes l', to the pipes G, so as to alternate with each other and
extend transversely across the top of the fire box H, from side to side of the boiler,
where by means of return bends e, the pipes I, 1', are carried back and forth above
the fire box H, in the form of elongated coils until the ends of the uppermost
pipes, f, of these coils enter the outer sides of the separators E. E', as shown.
At the rear end of the fire box H, is arranged the vertical return bend-coil J,

page_text: which is connected with a source of feed water supply and extends back and forth
transversely across the boiler so as to form the rear end of the fire box H, and in a
measure protect the rear wall of the casing A, from the action of the fire. This
vertical return-bend coil J, merges at its upper end into a horizontal return bend-
coil K, which is arranged above the coils 1, 1, so as to be heated by the heat and
particles of combustion after they pass through the coils I, I, and is connected by
a pipe L, with the separators E, E, as illustrated.
The separators E, E', are connected by pipes M, with the superheater or steam
drum F, and said separators are also connected, preferably at their rear ends, with
the mud drums C, C¹, by pipes N, N', which are smaller in size than the
pipes G, G, I, 1', for a purpose presently to be described. The separators E, E',
are further connected with the mud-drums C, C₁, by pipes P, and the steam drum
or superheater F, is also connected by the pipes R, Ni, with the mud drums as
shown so that if any water is carried over in the superheater by priming it will run
back into the mud drums.
S, indicates an ordinary steam gage which is connected with the superheater or
steam dram F, and T, indicates an ordinary whistle which is also connected to the
drum F, as shown.
In the operation of the improved boiler, the water after passing through the feed
water heating coils J, and K, and the pipe L, enters the separators E, E', and
passes through pipes N, N¹, and P, into the mud drums C, C¹. From the said
mud drums, the water and steam rise through the pipes G, G¹, and coils I, I', into
the separators E, E, and from thence the steam and such water as may be carried
therewith pass to the drum or superheater F, the water passing back from the
superheater F, through pipes R, R', and from the separators E, E', through
pipes N, N', and P, to the mud drums.
As before stated and as shown in the drawings, the pipes N, N', are smaller in
diameter than the pipes G, G', and I, I'. This enables the pipes N, N', by
resisting the passage of the water, to prevent the water from being forced out of
the pipes G, G, I, I', by the intense heat which would result in the pipes I, I,
being burnt.
'
It
The pipes of the improved boiler are preferably formed by steam pipe of best
quality and ordinary return bends and elbows of good quality are employed.
will therefore be appreciated that no novel styles of fitting are required for the
construction of the boiler and the same may be readily set up by a skilled gas or
steam fitter and may be as readily repaired by removing any desired section of pipe
and replacing it by a new section.
It will also be appreciated that while the improved boiler is very simple and
compact, it is adapted to maintain a thorough circulation of water and in
consequence is capable of steaming quickly. It will be further appreciated that
by reason of the construction. and arrangement of the parts of the boiler, a great
amount of heating surface and large grate area are afforded which are important
advantages.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :
1. In a sectional water-tube boiler, the combination of a superheater or steam
drum F, separators E, E', arranged on opposite sides of and connected by pipes
with said superheater or steam drum F, mud drums C, C¹, and upflow coils I, I,
and downflow pipes N, N', connecting said separators and mud drums; the down-
flow pipes N, N1, being smaller in diameter than the upflow coils I, I', substantially
as and for the purpose set forth.
2. In a sectional water-tube boiler, the combination of a superheater or steam
drum F, separators E, E¹, arranged on opposite sides of and connected by pipes M,
with said superheater or steam drum F, mud drums C, C¹, upflow coils I, 1', and
downflow pipes N, N', connecting said separators and mud drums, the vertical

page_text: return bend-coil J, arranged transverse of the boiler at the back thereof and
adapted to be connected with a source of water supply, and the horizontal return
bend-coil K, connected with the coil J, and arranged above the upflow
coils I, 1, and connected with the separators E, E', all substantially as and for the
purpose described.
3. A sectional water-tube boiler comprising the casing, and the boiler or boiler
proper arranged entirely within the casing and comprising the superheater or steam
drum F, separators E, E', arranged on opposite sides of and connected by pipes M,
with said superheater or steam drum F, mud-drums C, C¹, upflow coils I, I', and
downflow pipes N, N¹, connecting said separators and mud drums, the vertical
return bend-coil J, arranged transverse of the boiler at the back thereof and
adapted to be connected with a source of water supply, the horizontal return
bend-coil K, connected with the coil J, and arranged above the upflow coils I, I,
and connected with the separators E, E', the pipes connecting the superheater or
steam drum F, and the mud drums, the grate connected to and arranged between
the mud drums, and the ash pan arranged beneath the grate, all substantially as
and for the purpose set forth.
Dated the Witch dow of November 1995
W. T. WHITEMAN,
Agent for the Applicants.