Improvements in Marine and other Boilers.
Year: 1888

page_text: Date of Application, 21st Nov., 1883
Complete Specification Left, 20th Aug., 1889-Accepted, 25th Sept., 1839
PROVISIONAL SPECIFICATION.
Improvements in Marine and other Boilers.
We PETER FERGUSON and WILLIAM YOUNG FLEMING, both of Phoenix Engine
Works Paisley, Renfrewshire, Engineers and Shipbuilders, do hereby declare the
nature of this Invention to be as follows:-
This Invention consists in constructing steam boilers in two or more sections or
parts to adapt them for supplying steam at different pressures to compound or multiple
expansion marine and other engines.
Under one modification of the Invention one section or part of the compound
boiler is made as a complete boiler containing a furnace or furnaces and is adapted
for generating steam at ordinary pressures, and another section which is made as a
separate and independent steam generator is situated at the rear or side or over the
part containing the furnace constituting a continuation of the length breadth or
height of the first section and is fitted with fire or water tubes or other heating
surfaces which are subjected to the heat of the fire gases passing from the furnaces of
the first section. The second section is made very strong and is adapted for
generating steam of extremely high pressure. The compound boiler may be formed
of one or more furnace sections for generating steam at ordinary pressures and two
or more sections containing heating surfaces but having no furnace and adapted for
generating steam of very high pressures which may differ in degree. In practice on
board ship the steam from the low pressure section or sections may be used for
heating the feed of the high pressure section or sections and for all other purposes
for which steam of this pressure is suitable, the surplus not required or used for such
purposes being passed into one or other of the main engine cylinders using steam of
a pressure corresponding to that of the furnace section of the boiler and used in the
driving of the engines; whilst the steam generated in the high pressure section or
sections may be entirely used expansively in the main engines.
Dated this Twentieth day of November 1888.
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improvements in Marine and other Boilers.
We PETER FERGUSON. and WILLIAM YOUNG FLEMING, both of Phoenix Engine
Works, Paisley, Renfrewshire, Engineers and Shipbuilders 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 consists in constructing steam boilers in two or more sections or
parts to adapt them for supplying steam at different pressures to compound or multiple
expansion marine and other engines.
Under one modification of the Invention one section or part of the compound
boiler is made as a complete boiler containing a furnace or furnaces and is adapted
for generating steam at ordinary pressures, and another section which is made as a
separate and independent steam generator is situated at the rear or side or over the
part containing the furnace constituting a continuation of the length breadth or
height of the first section and is fitted with fire or water tubes or other heating
surfaces which are subjected to the heat of the fire gases passing from the furnace of
the first section. The second section is made very strong and is adapted for
generating steam of extremely high pressure. The compound boiler may be formed
n

page_text: of one or more furnace sections for generating steam at ordinary pressures and two
or more sections containing heating surfaces but having no furnace and adapted for
generating steam of very high pressures which may differ in degree. In practice on
board ship the steam from the low pressure section or sections may be used for
heating the feed of the high pressure section or sections and for all other purposes
for which steam of this pressure is suitable, the surplus not required or used for such
purposes being passed into one or other of the main engine cylinders using steam of
a pressure corresponding to that of the furnace section of the boiler and used in the
driving of the engines, whilst the steam generated in the high pressure section or
sections may be entirely used expansively in the main engines.
In the accompanying drawings, which illustrate our invention under several of
the various modifications of which it is susceptible, Figures 1 and 2 are respectively
a vertical section and an end elevation showing one arrangement of the improved
compound boiler consisting of an ordinary pressure boiler A and a high pressure
boiler B securely bolted together. The boiler A contains the furnaces and combustion
chamber F from which the products of combustion pass through the iubes T in the
high pressure boiler B to the smoke box S and thence up the funnel-D represents a
movable damper by which the flames may be deflected from the heating surface of
the boiler A when so required.
Figures 3 and 4 are sectional and end elevations showing a compound boiler made
up of an ordinary pressure boiler A and two high pressure boilers B B. In this
case the products of combustion pass from the furnaces F first underneath the
boilers B B to the combustion chamber C and then through the tubes T in the
boilers B to the smoke box S.
Figures 5 and 6 are side and end elevations of a double ended arrangement of the
compound boiler consisting of two ordinary pressure boilers A A and four high
pressure boilers BBB B. The arrangement otherwise is similar to that shown in
Figures 1 and 2.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what we
claim is:
1. A compound steam boiler constructed substantially as hereinbefore described.
2. A steam boiler composed of two or more independent sections heated from the
same furnaces and adapted to generate steam of different pressures substantially as
described.
Dated this Nineteenth day of August 1889.
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow, Agents.