Improvements in or connected with Water Tube and other Steam Boilers.
Year: 1897

page_text: Date of Application, 21st Jan., 1897
Complete Specification Left. 11th Oct.. 1897-Accepted. 13th Nov.. 1897
PROVISIONAL SPECIFICATION.
Improvements in or connected with Water Tube and other Steam
Boilers.
I, LEOPOLD ZOBEL of 8, Fischerstrasse, Bromberg, in the Empire of Germany,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
This invention relates to water tube and other steam boilers and has for its
object to provide a steam generator which may be also used as a steam super-
heater. The invention consists of two chambers connected by a series of tubes
one of the chambers being connected with the water space of the boiler by means
of a pipe which is capable of being shut off, so that this part of the boiler, when
the connection with the water space is open, acts as a steam generator, whilst
when the connection with the water space is shut off, said chamber serves for
superheating the steam.
In carrying out the invention a partition is inserted in the upper boiler so as to
form a separate chamber and this chamber is connected with another chamber by
a series of tubes. The latter chamber is connected by means of a lower connecting
pipe with the tube chamber of the boiler water tubes, and also with the steam
space of the boiler by means of upper connecting pipes the tubes which connect
the two chambers, and the chamber formed by the partition.
When utilised as a steam generator to increase the heating surface of the steam
boiler, a valve on the lower connecting pipe and valves on the upper
connecting pipes are opened whereby the same level of water is then
attained in the two chambers and in the series of tubes connecting
them as in the upper boiler. The heating of these parts is effected by causing the
fire gases to pass round them on their way to the chimney.
By the lower and upper connection with the steam boiler of these parts which
serve as either generator or superheater, the same steam pressure is obtained in
both when working, and steam may be withdrawn simultaneously from both
chambers, which is effected by opening an upper valve. This valve is connected
with the pipe leading upward from the second chamber and with the pipe leading
from the upper boiler into which latter pipe a pipe leads upward from the first
chamber.
When utilised as a steam superheater, the valve on the lower connecting pipe,
and one valve on the upper connecting pipe are closed, and the other valves of
the upper connecting pipes are left open. The two chambers and the series of
tubes connecting them are then waterless. The steam which now enters the first
chamber from the upper boiler through two of the upper connecting pipes and the
valve thereon must thus on being withdrawn through the steam pipe valve pass
through the two chambers and the connecting tubes and thus be superheated.
As no water is contained in these parts which form a steam generator or rather
superheater, the same are heated by the fire gases of the steam boiler, and as the
steam on its withdrawal through the upper valve passes through these parts it is
dried therein and almost attains simultaneously the temperature of the escaping
fire gases.
This arrangement may not only be employed in water tube boilers but also in

page_text: steam boilers of any construction and on any system. In the form of construction
herein before described of the steam generator, the second chamber is connected
with the first chamber by means of a series of tubes, the said first chamber forming
a continuation of the upper boiler.
In another example, the second chamber may be moved out of the prolonged
axis of the upper boiler, and be placed on the upper boiler itself, and a pipe pro-
vided with a valve may form the connection of the first chamber (which for this
object may be suitably widened) with the water space of the boiler.
In this case as in the arrangement first described, a partition is inserted in the
upper boiler so as to form the first chamber at the end thereof. The second
chamber is placed further forward under the upper boiler and extends at both sides
up to about the central plane of the same and is connected by means of a pipe
and valve with the steam space of the upper boiler. A series of tubes connect the
second chamber with the front wall of a suitable lower extension of the first
chamber and from the latter a pipe provided with a valve runs into the tube
chamber of the boiler water tubes.
In another example the second chamber may be directly connected with the
steam space of the upper boiler and by means of a series of tubes, be placed in
communication with the first chamber, the latter being also here connected by
means of a pipe provided with a valve with the tube chamber of the water tubes.
In both examples, if the valve in the lower connecting pipe be considered to be
closed, the two chambers connected by the series of tubes act as superheaters, and
superheated steam may be withdrawn through the valve arranged on the first
chamber. If, on the other hand, the connection with the water space be opened,
these parts forming my invention act as a steam generator, considerably increasing
both the evaporating and heating surfaces.
Differing from the example first described, the first chamber in these latter
examples does not form a continuation of the upper boiler in the actual sense of
the word, but rather in the second example is widened downwards with the object
of connecting with the series of tubes, and in the third example for the same object
is wider than the upper boiler and arranged eccentrically to the same.
Dated this 20th day of January 1897
WM. P. THOMPSON & Co.,
Of 6 Lord Street, Liverpool, Agents for the Applicant.
.
Improvements in or connected with Water Tube and other Steam
Boilers.
I, LEOPOLD ZOBEL of 8, Fischerstrasse, Bromberg in the Empire of Germany,
Manufacturer, 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 water tube and other steam boilers and has for its
object to provide a steam generator which may be also used as a steam super-
heater. The invention consists of two chambers connected by a series of tubes,
one of the chambers being connected with the water space of the boiler by means
of a pipe which is capable of being shut off, so that this part of the boiler, when
the connection with the water space is open, acts as a steam generator, whilst
when the connection with the water space is shut off, said chamber serves for
superheating the steam.

page_text: In the accompanying drawings,
Figure 1 is a longitudinal section of a steam boiler arranged in this manner
showing the connection between the chambers and the water space opened;
Figure 2, a longitudinal section showing the chambers shut off from the water
space;
Figure 3 is a longitudinal section; and
Figure 4, a cross section of a modified form of construction; and
Figure 5 is a longitudinal and Figure 6 a cross section of another modification.
The steam generator or steam superheater consists of a chamber A, a series of
tubes B and a chamber C.
In carrying out the invention, a partition W is inserted in the upper boiler K
so as to form a separate chamber A, Figures 1 & 2 and this chamber is connected
with another chanel C by a series of tubes B. The latter chamber is connected
by means of a lower connecting pipe X with the tube chamber Y of the boiler
water tubes Z and also with the steam space of the boiler K by means of upper
connecting pipes 13 the tubes B which connect the two chambers and the
chamber A formed by the partition.
When utilised as a steam generator to increase the heating surface of the steam
boiler, as shown in Figure 1, a valve on the lower connecting pipe X and
valves on the upper connecting pipes 123 are opened, whereby the same
level of water is then attained in the two chambers A and C and in the series
of tubes B connecting them as in the upper boiler K. The heating of these
parts ABC is effected by causing the fire gases to pass round them on their way
to the chimney.
By the lower and upper connection with the steam boiler of these parts A B C which
serve as either generator or superheater, the same steam pressure is obtained in
both when working, and steam may be withdrawn simultaneously from both
chambers A and C, as shown by the arrow in Figure 1, which is effected by opening
an upper valve . This valve vt is connected with the pipe leading upward
from the second chamber C and with the pipe 3 leading from the upper boiler K
into which latter pipe a pipe 2 leads upward from the first chamber A.
When utilised as a steam superheater, as shown in Figure 2, the valve on the
lower connecting pipe X and the valve 23 onl the upper connecting
pipe are closed, and the other valves v2 of the upper connecting
pipes are left open. The two chambers A C and the series of tubes B
connecting them are then waterless. The steam which now enters the first
chamber from the upper boiler K through two of the upper connecting pipes ³-3
and the valve thereon must thus on being withdrawn through the steam pipe
valve pass through the two chambers AC and the co: zecting tubes B, as shown
by the arrows in Figure 2, and thus be superheated.
As no water is contained in these parts ABC which form a steam generator or
rather superheater, the same are heated by the fire gases of the steam boiler, and
as the steam on its withdrawal through the upper valve passes through these
parts ABC it is dried therein and almost attains simultaneously the temperature
of the escaping fire gases.
This arrangement may not only be employed in water tube boilers but also in
steam boilers of any construction and on any system. In the form of construction
hereinbefore described of the steam generator, as shown in Figures 1 and 2, the
second chamber C is connected with the first chamber A by means of a series of
tubes B the said first chamber forming a continuation of the upper boiler K.
In another example, shown in Figures 3 and 4, the second chamber C may be
moved out of the prolonged axis of the upper boiler, and be placed on the upper
boiler Kitself, and a pipe X provided with a valve may form the connection of
the first chamber A (which for this object may be suitably widened) with the
water space of the boiler.
In this case as in the arrangement first described, a partition W is inserted in
the upper boiler K so as to form the first chamber A at the end thereof. The

page_text: second chamber C is placed further forward under the upper boiler K and extends
at both sides up to about the central plane of the same and is connected by means
of a pipe and valve with the steam space of the upper boiler. A series of
tubes B connect the second chamber C with the front wall of a suitable lower
extension of the first chamber A and from the latter a pipe X provided with a
valve runs into the tube chamber Y of the boiler water tubes Z.
In another example, shown in Figures 5 and 6, the second chamber C may be
directly connected with the steam space of the upper boiler K and by means of a
series of tubes B be placed in communication with the first chamber A, the latter
being also here connected by means of a pipe X provided with a valve with the
tube chamber Y of the water tube Z.
In both examples, Figures 3 and 4, and 5 and 6, if the valve in the lower
connecting pipe X be considered to be closed, the two chambers AC connected
by the series of tubes B act as superheaters, and superheated steam may be with-
drawn through the valve 2 arranged on the first. chamber A. If, on the other
hand, the connection with the water space be opened, these parts ABC forming
my invention act as a steam generator, considerably increasing both the
evaporating and heating surfaces."
Differing from the example first described, and shown in Figures 1 and 2, the
first chamber A in these latter examples does not form a continuation of the upper
boiler K in the actual sense of the word, but rather in the example shown in
Figures 3 and 4, is widened downwards with the object of connecting with the
series of tubes B, and in the example shown in Figures 5 and 6 for the same object
is wider than the upper boiler K and arranged eccentrically to the same.
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 steam generator having a steam superheater capable of being used as a
steam producer, characterised by the superheater being formed of two
chambers (A C) connected by a series of tubes (B) one of which chambers is con-
nected with the water space of the boiler by means of a pipe (X) capable of being
closed, so that these parts (ABC) of the boiler when communication with the
water space of the boiler is opened act as a steam generator with a considerable
increase of the evaporating and heating surfaces, whilst when such communication
is closed, they serve as a superheater, substantially as herein before set forth.
2. A form of construction of the steam generator herein described having a
superheater applicable as a steam generating part of the boiler in which the
chamber A is enlarged downwards or otherwise and the chamber C which is placed
under the upper boiler (K) is connected with the chamber A by means of a series
of tubes (B), whilst the tube (X), which is capable of being closed, connects the
chamber A with the water space of the boiler, substantially as described.
3. A form of construction of the steam generator herein described having a
superheater applicable as a steam generating part of the boiler, in which the
chamber A is enlarged downwards or otherwise and does not form a direct con-
tinuation of the upper boiler (K) and is connected by means of tubes (B) with a
chamber (C) directly connected with the steam space of the upper boiler (K) and
by means of a tube (X) capable of being closed with the water space of the boiler,
substantially as described.
Dated this 9th day of October 1807
WM. P. THOMPSON & Co.,
Of G Lord Street, Liverpool, Agents for the Applicant.