IMPROVEMENTS IN ROOT AND OTHER LIKE TUBULAR STEAM BOILERS
Year: 1885

page_text: I RICHARD HOBBS TAUNTON of Heneage Street Birmingham in the County of
Warwick Tube Manufacturer do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN ROOT AND OTHER LIKE TUBULAR STEAM BOILERS " to be
as follows:-
My invention consists of the construction and arrangement or combination of
feed water and mud deposit pipes and apparatus connected therewith hereinafter
described whereby the feed water is heated to the full heat of the boiler before it
enters the boiler proper and the deposition and collection of the solid matter or
mud in the water is facilitated the said solid matter or mud so deposited not being
disturbed by the flow of the feed water further the circulation of the water in the
boiler is improved and dry steam produced.
I will describe my improvements in connection with a Root tubular steam
boiler.
I arrange by preference underneath the bottom row of the inclined boiler tubes
and immediately over the fire and under the boiler a coil of pipes situated
preferably at right angles to the ordinary boiler tubes The feed coil described is
so constructed that the pipes of which it is formed can be readily removed for
cleaning or otherwise without taking to pieces any part of the boiler proper. The
feed pipe from the pump opens into the coil at the lower end thereof and near the
ordinary mud drum at the back of the boiler but the said coil is also connected
below the feed entrance to the said mud drum. The water fed to the coil passes
through it under the full boiler pressure and becomes heated to the temperature of
the boiler. The heated water then ascends by a vertical pipe at the front of the
boiler to the ordinary water level of the boiler and next passes to and descends in
a large vertical pipe which is connected at its upper part with the steam drum on
the top of the boiler This large vertical pipe opens at bottom into a large hori-
zontal pipe situated at the side of the boiler and external to the brick work. This
pipe has on its underside a series of branches which are connected to similar
branches on a parallel lower horizontal pipe constituting the mud deposit pipe.
The upper horizontal pipe is connected to a mud drum outside the back end of the
boiler and parallel to the ordinary mud drum. Through this outside mud drum
the water from the deposit pipe enters and passes along its whole length before it
enters the ordinary mud drum of the boiler on its way to the boiler tubes. As the

page_text: heated water circulates through the horizontal pipe in connection with the deposit
pipe below it the greater part of the suspended deposit or mud falls from the
water as it passes the branch pipes into the deposit pipe and in order to reduce
the rush of water in the upper pipe and facilitate the deposition of the mud
bridges or obstructions may be arranged across the bottom of the said pipe. As
the heated water circulates through the rear outside mud drum it is further
deprived of its mud before it enters the ordinary mud drum.
In the outside mud drum at the rear end of the boiler a removeable pan with
cross bridges may be placed so that the mud can be deposited in it. By removing
the pan it may be cleaned of the mud or the mud may be blown off.
The external mud drum at the back of the boiler may be provided with a lower
deposit pipe or tray similar to that at the side of the boiler.
By the arrangement described the feed water is heated to a high temperature
before it enters the boiler tubes and as the heated water circulates several times
through the coil the greater part of its earthy contents are precipitated and will be
deposited and collected in the mud pipe and drums before the said water enters
the boiler tubes. As the water in the boiler is evaporated fresh water will be
drawn from the top of the ordinary mud drum the said last named drum being
fed from the external parallel mud drum before described. I arrange at the top of
the boiler a series of steam superheating tubes in connection with the ordinary
steam drum.
If the boiler is made into a circulating boiler that is if the coil be connected at
a high level with the steam drum or with the steam superheating pipes described
over the top of the boiler then all the water will circulate through the deposit
pipes and the feed water passing through the coil will join the boiler water. If
the coil is connected to the deposit pipes at a lower level the water will only
circulate through the coil mud pipes and external mud drum.

page_text: Improvements in Root and other like Tubular Steam Boilers.
I RICHARD HOBBS TAUNTON of Heneage Street, Birmingham in the County of
Warwick, Tube Manufacturer do hereby declare the nature of my Invention for
“IMPROVEMENTS IN ROOT AND OTHER LIKE TUBULAR STEAM BOILERS
" and in
what manner the same is to be performed to be particularly described and
ascertained in and by the following statement:-
My invention consists of the construction and arrangement or combination of
feed water and mud deposit pipes and apparatus connected therewith hereinafter
described whereby the feed water is heated to the full heat of the boiler before it
enters the boiler proper and the deposition and collection of the solid matter or mud
in the water is facilitated, the said solid matter or mud so deposited not being dis-
turbed by the flow of the feed water; further the circulation of the water in the
boiler is improved and dry steam produced.
I will describe my improvements in connection with a Root tubular steam boiler.
I arrange by preference underneath the bottom row of the inclined boiler tubes
and immediately over the fire and under the boiler a coil of pipes situated
preferably at right angles to the ordinary boiler tubes. The feed coil described is
so constructed that the pipes of which it is formed can be readily removed for
cleaning or otherwise without taking to pieces any part of the boiler proper. The
feed pipe from the pump opens into the coil at the lower end thereof and near the
ordinary mud drum at the back of the boiler but the said coil is also connected
below the feed entrance to the said mud drum. The water fed to the coil passes
through it under the full boiler pressure and becomes heated to the temperature of
the boiler. The heated water then ascends by a vertical pipe at the front of the
boiler to the ordinary water level of the boiler; it then crosses the boiler by a
small horizontal pipe. It is then connected with a large horizontal pipe external
to the boiler at one end of which horizontal pipe is an ascending branch in
connection with the steam drum. The other end of the horizontal pipe is connected
by a descending pipe and the latter is connected to the ordinary mud drum. The
large horizontal pipe has on its underside a series of branches which are connected
to similar branches on a parallel lower horizontal pipe constituting the mud
deposit pipe. The upper horizontal pipe may be connected to a mud drum outside
the back end of the boiler and parallel to the ordinary mud drum. Through this
outside mud drum the water from the deposit pipe enters and passes along its
whole length before it enters the ordinary mud drum of the boiler on its way to
the boiler tubes. As the heated water circulates through the horizontal pipe in
connection with the deposit pipe below it, the greater part of the suspended
deposit or mud falls from the water as it passes the branch pipes into the deposit
pipe and in order to reduce the rush of water in the upper pipe and facilitate the
deposition of the mud, bridges or obstructions may be arranged across the bottom
of the said pipe. As the heated water circulates through the rear outside nud
drum it is further deprived of its mud before it enters the ordinary mud drum.
In the outside mud drum at the rear end of the boiler, a removable pan with
cross bridges may be placed so that the mud can be deposited in it. By removing
the pan it may be cleaned of the mud, or the mud may be blown off.
By the arrangement described the feed water is heated to a high temperature
before it enters the boiler tubes and as the heated water circulates several times

page_text: through the coil, the greater part of its earthy contents are precipitated and will
be deposited and collected in the mud pipe and drums before the said water enters
the boiler tubes. As the water in the boiler is evaporated, fresh water will be
drawn from the top of the ordinary mud drum, the said last named drum being fed
from the external parallel mud drum before described.
At the top of the boiler a series of steam superheating tubes in connection with
the ordinary steam drum may be arranged.
I will now proceed to describe with reference to the accompanying Drawing the
manner in which my invention is to be performed.
Figure 1 represents in front elevation, partly in section; Figure 2 in longitudinal
section and Figure 3 in side elevation, a Root or other like tubular steam boiler
containing my improvements.
The same letters of reference indicate the same parts in the several Figures of
the Drawing.
b, b are the rows of inclined boiler tubes, their lower ends opening into the rear
mud drum e and their upper ends communicating with the steam drum m in the
usual way a, a is the coil of pipes through which the feed water circulates and by
which it is in part heated. This feed coil a, a is situated at right angles to the
ordinary boiler tubes b, b and the lower end of the said feed coil a, a is connected
by the pipe f to the mud drum e at the rear of the boiler, the said pipe f entering
the mud drum at g (see Figure 2) The coil a is fed with water by the pipe d (see
Figure 1) from the pump the said pipe d opening into the lower end of the coil
and near the ordinary mud drum c. The water fed to the coil a passes through it
under the full boiler pressure and becomes heated to the temperature of the boiler.
The ends of the parallel pipes forming the coil a are connected together outside the
boiler by means of the bends or junction pieces c, c (best seen in Figure 3). This
construction permits the pipes of the coil to be readily removed for cleaning or
repair without interfering with any other part of the boiler.
The end of the highest part of the coil a is connected to the vertical pipe h at
the front of the boiler situated in the axis of the larger tube i in which pipe / the
heated water ascends. From the pipe the heated water passes by the small
horizontal pipe k situated inside and crossing the boiler and enters the large hori-
zontal pipe . At one end of the horizontal pipe which is situated at the side of
and external to the brick work is an ascending branch 13 in connection with the
steam drum m the steam drum at the opposite end opening by the small pipe 1º
into the large vertical pipe i containing the pipe h in connection with the feed
coil a.
The opposite end of the horizontal pipe is connected by the descending
branch with the drum e the said descending pipe 12 opening into that end of the
drum e opposite to that at which the pipe fis connected with the said drum. At
the underside of the horizontal pipe is a series of short branches which are
connected to similar branches 15 on a parallel lower horizontal pipe p constituting
the mud deposit pipe.
In the upper horizontal pipe 7 bridges or obstructions at q (see Figure 3) may be
arranged across the bottom of the pipe to reduce the rush of water in the said
pipe and to facilitate the deposition of the mud in the pipe p.
i
From the description herein before given reference being had to the accompanying
Drawing it will be understood that the feed water being forced into the coil a at d
leaves the said coil by the pipe h and passing across the boiler by the pipe k enters
the horizontal pipe one end of the said pipe being connected with the steam
drum m and the other end of the said pipe being connected with the ordinary
mud drum e. As the heated water circulates through the horizontal pipe / the
greater part of the suspended earthy deposit or mud falls from the water through
the branch pipes, into the mud deposit pipe p from which it may be removed
from time to time by blowing off or otherwise.
By the arrangement described and represented the feed water is heated to a high
temperature before it enters the boiler tubes b from the mud drum e and as the
heated water passes several times over the fire in the feed coil a, a the greater part

page_text: of its earthy contents are precipitated and will be deposited in the mud pipe p and
mud drum e before the water enters the boiler tubes, fresh water being supplied to
the boiler tubes as the water in the boiler evaporates from the mud drum e.
In addition to the ordinary mud drum e an outside mud drum parallel with the
said mud drum e may be used as indicated in dotted lines in Figure 2, the said
outside additional mud drum being marked r. When the outside mud drum r is
used the descending pipe l² from the horizontal pipe is connected with the drum r
instead of with the ordinary drum e as indicated in dotted lines in Figure 2 and
the external mud drum is connected to the ordinary drum e by the bend 8.
A removable pan and cross bridges may be used in the external mud drum r.
In the said pan the mud is deposited and on removing it from the drum it may
be cleared of the mud. Or the mud accumulated in the drum may be blown off.
As the heated water circulates through the rear outside drum r it is further
deprived of its earthy contents or mud before the said water enters the ordinary
mud drum e to be supplied to the boiler tubes. The external mud drum r may be
provided with a lower deposit pipe similar to that marked p at the side of the
boiler.
In Figure 2 I have indicated in dotted lines a series of superheating pipes t, t
which may be used in combination with the other parts of my invention. These
superheating pipes t, t are situated over the top of the boiler and are in connection
with the feed water pipe passing through the ordinary steam drum m.
If the boiler is made into a circulating boiler that is if the coil a be connected
at a high level with the steam drum m or with the superheating pipes t, t over the
top of the boiler then all the water will circulate through the deposit pipes and the
feed water passing through the coil a will join the boiler water. If the coil a is
connected to the deposit pipes at a lower level the water will only circulate through
the coil, mud pipes and external mud drum or drums.
Having now particularly described and ascertained the nature of my inven-
tion and the manner in which the same is to be performed I declare that I claim
as my invention
First. The combination with Root and other like tubular steam boilers of the
feed water coil a, a connected by the feed water circulating pipes described and
represented with the mud deposit pipe p at the side of and external to the boiler
and with the ordinary mud drum e, whereby the feed water is heated to the full
heat of the boiler before it enters the boiler tubes and the deposition and collection
of the precipitated earthy matter or mud are facilitated the several parts being
arranged and operating substantially as herein before described and illustrated in
the accompanying Drawing.
Secondly. The combination with the appliances claimed in the first claim of the
external mud drum r situated parallel to and in connection with the ordinary mud
drum e and with the feed water circulating pipes as herein before described and
illustrated in the accompanying Drawing.
Thirdly. The combination with the appliances claimed in the first and second
claims of the superheating apparatus at the top of the boiler in connection with
the feed water circulating pipe passing through the steam drum as herein before
described and illustrated in the accompanying Drawing.
.'l מ
m
1
1
T
1000