Improvements in Water Tube Boilers.
Year: 1896

page_text: Date of Application, 4th July, 1896
Complete Specification Left, 26th Aug., 1896-Accepted, 24th Oct., 1896
PROVISIONAL SPECIFICATION.
Improvements in Water Tube Boilers.
I, ROBERT PATRICK of Cartsburn Street, Greenock, Renfrewshire, Engineer,
do hereby declare the nature of this invention to be as follows:-
My invention relates to that class of water tube boiler having inclined water
tubes with water pipe ends or headers and it consists in constructing such boilers
in separate sections of groups of water tubes, each section having its own fire
grate and steam drum, dome, or receiver, and being divided from the adjoining,
sections by a partition of fire bricks or tiles. The sections are capable of being
worked together or separately as desired.
The water tubes are screwed or expanded at each end into the tube plates which
have flanges for bolting on to the corresponding flanges of the covers, which
latter are made of a curved shape, preferably, semi-cylindrical, and form the
water pipes or headers, at each end of the tubes. Each semi-cylindrical water
pipe or header with the tube plate to which it is connected is carried sufficiently
high up above the tubes at the front and back ends of boiler to connect the steam
drum, dome or receiver between them by either screwed or flanged ends as may be
found convenient. Each water pipe or header is provided with hand hole doors
for examining and cleaning the tubes.
At the top of the boiler and in front of the before mentioned semi-cylindrical
headers or water pipes I connect the steam pipe transversely to the different
sections with valves or other means for disconnecting any section that may become
damaged or get out of order. The feed water pipe at the back end of boiler is
also carried transversely, in the same manner, and connected with valves to the
water pipes or headers for the same purpose.
A fire grate or furnace is formed at a suitable distance directly under the group
of water tubes of each section of the boiler, the furnace of each section being
separated from its neighbours by the before mentioned partitions of fire brick or
tiles carried upwards to the top of the boiler.
With this arrangement each section of the boiler is independent and complete
in itself, although it can be connected to or disconnected from the other sections
by means of the valves on the steam pipe and feed water pipe as aforesaid. Any
number of sections can be placed side by side and the power of the boiler increased
to any requirement.
Dated this 3rd day of July 1896
H. D. FITZPATRICK,
70 Wellington Street, Glasgow, Agent.
COMPLE
TION.
Improvements in Water Tube Boilers.
I, ROBERT PATRICK of Cartsburn Street, Greenock, Renfrewshire, 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 :-
My invention relates to that class of water tube boiler having inclined water

page_text: tubes with water pipe ends or headers and it consists in constructing such boilers
in separate sections of groups of water tubes, each section having its own fire grate
and steam drum, dome, or receiver, and being divided from the adjoining sections
by a partition of fire bricks or tiles. The sections are capable of being worked
together or separately as desired.
The water tubes are screwed or expanded at each end into the tube plates which
have flanges for bolting on to the corresponding flanges of the covers, which latter
are made of a curved shape, preferably, semi-cylindrical, and form the water pipes
or headers, at each end of the tubes. Each semi-cylindrical water pipe or header
with the tube plate to which it is connected is carried sufficiently high up above
the tubes at the front and back ends of boiler to connect the steam drum, dome,
or receiver between them by either screwed or flanged ends as may be found
convenient. Each water pipe or hender is provided with hand hole doors for
examining and cleaning the tubes.
At the top of the boiler and in front of the before mentioned semi-cylindrical
headers or water pipes I connect the steam pipe transversely to the different
sections with valves or other means for disconnecting any section that may become
damaged or get out of order. The feed water pipe at the back end of boiler is
also carried transversely, in the same manner, and connected with valves to the
water pipes or headers for the same purpose.
A fire grate or furnace is formed at a suitable distance directly under the group
of water tubes of each section of the boiler; the furnace of each section being
separated from its neighbours by the before mentioned partitions of fire brick or
tiles carried upwards to the top of the boiler.
With this arrangement each section of the boiler is independent and complete in
itself, although it can be connected to or disconnected from the other sections by
means of the valves on the steam pipe and feed water pipe as aforesaid. Any
number of sections can be placed side by side and the power of the boiler increased.
to any requirement.
And in order that my said invention may be properly understood I have
hereunto appended, by way of example, an explanatory sheet of drawings,
whereon,
Fig. 1 is an end elevation of a water tube boiler divided into three sections; one
of the semi-cylindrical covers E of the boiler is removed in order to show a group:
of tubes A.
Fig. 2 is a longitudinal section of the boiler.
Fig. 3 is a plan view with part in section.
Referring to the drawings-
In carrying out my invention I expand or screw the ends, of the inclined water
tubes A of each group or section into the tube plates B, B1, of the headers E, E..
These headers are of semi-cylindrical shape, as shown, and are, preferably, arched
at top and bottom. Communicating with the headers of each section is a steam
drum F which is arranged above the tubes. As will be seen the tube plates B, B¹,
have flanges D, to which the flanges C of the curved cover plates of the headers
are bolted or rivetted. The headers have hand holes G in them in order that the
tubes A can be cleaned or examined.
A steam pipe H runs across the face of the boiler and is connected to each
header E by the valves I. These valves enable any section to be disconnected in
case of injury.
A feed pipe J runs across the back of the boiler and also communicates with
the headers E¹ by means of valves K arranged, as shown, so that the feed water
can be cut off or supplied to any section as desired.
Each section of the boiler with its group of water tubes A, its furnace Land
its steam drum F is divided off from its neighbouring sections by the vertical
walls M composed of fire bricks or tiles. These partition walls extend up to a
sufficient height to completely isolate each section and enable it to constitute an
independent generator.

page_text: A boiler can be made up of any number of sections placed side by side and by-
increasing the sections any desired boiler power can be obtained.
The boiler is provided with the usual fittings such as safety valves, pressure
gauges, etc.
Having now particularly described and ascertained the nature of my said inven--
tion and in what manner the same is to be performed, 1 declare that what I
consider novel and desire to claim is :-
1. A water tube boiler made in sections each section being capable of being-
isolated from and worked independently of its neighbours, substantially as herein-
before described with reference to the drawings annexed.
2. A water tube boiler divided into sections consisting of a group of water
tubes, a heating furnace, and a steam drum, the sections being separated from.
each other, so as to work independently if necessary, by means of partitions of
fire brick or tiles, substantially as hereinbefore described with reference to the
drawings annexed."
3. A sectional water tube boiler constructed and arranged substantially as-
hereinbefore described and shown on the drawings annexed.
Dated this 25th day of August 1906
H. D. FITZPATRICK,
70 Wellington Street, Glasgow, Agent.