Improvements in Cargo Steamers.
Year: 1889

page_text: Date of Application, 27th Nov., 1889
Complete Specification Left, 26th Aug., 1890-Accepted, 25th Oct., 1890
PROVISIONAL SPECIFICATION.
Improvements in Cargo Steamers.
I, WILLIAM BRUCE THOMPSON, of Ellangowan, Dundee, in the County of Forfar,
North Britain, Engineer and Shipbuilder, do hereby declare the nature of this invention
be as follows, that is to say :-
My said invention has for its object to construct, arrange, or combine, parts of
cargo steamers in an improved manner, and so as to render a comparatively larger
space available for cargo. In my improved arrangement the stoke hole or stoke holes
can be easily kept comparatively much cooler than in existing steamers, which will
be an important advantage in all steamers and especially in those navigating tropical
seas.
"
In carrying out my invention I arrange the engine room of a screw steamer in
an ordinary position, but most of the space ordinarily occupied by the boilers I
utilise as an additional space or hold for cargo, whilst I place the boilers above such
hold on beams suitably strengthened. I prefer to employ horizontal cylindrical boilers
placed parallel to the keel and disposed in one or two transverse rows. 1 make the
boilers of a comparatively small diameter to keep their height moderate, obtaining the
needed capacity by length, and I construct them of the "locomotive type, or with
furnaces at one end, intermediate combustion chambers, and tubes therefrom to the
other end. I construct small coal bunkers on the same level as the boilers, and I con-
struct lower main bunkers across the forward end of the engine room. I provide
hoisting apparatus to get the coal from the main bunkers up to the boiler level. With
boilers of the kind, and arranged in the manner hereinbefore described it will be
practicable and advantageous to employ mechanical stoking apparatus.
Dated this Twenty-sixth day of November 1889.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Cargo Steamers.
I, WILLIAM BRUCE THOMPSON, of Ellangowan, Dundee, in the County of Forfar,
North Britain, Engineer and Shipbuilder, 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, that is to say :-
My said invention has for its object to construct, arrange, or combine parts of cargo
steamers in an improved manner, and so as to render a comparatively larger space
available for cargo.
In my improved arrangement the stoke hole or stoke holes can
be easily kept comparatively much cooler than in existing steamers, which will be an
important advantage in all steamers, and especially in those navigating tropical seas.
By way of example, I have, on an accompanying sheet of explanatory drawings,
shown diagrammatically a cargo steamer as constructed with my improvements.
Figure, 1, is a general view, as in longitudinal section, and
Figures, 2, and 3, are enlarged longitudinal and transverse vertical sections of the
amidship parts.
In these drawings the same reference letters are used to mark the same or like parts
wherever they are repeated.
In carrying out my invention 1 arrange the engine room, E, of a screw steames
in an ordinary position, but most of the space, C, ordinarily occupied by the boilerr
I utilise as an additional space or hold for cargo, whilst I place the boilers, B, above
such hold, C, on beams or framing suitably strengthened. I prefer to employ horizontal
D

page_text: rows.
cylindrical boilers, B, placed parallel to the keel, and disposed in one or more transverse
I make the boilers, B, of a comparatively small diameter to keep their height
moderate, obtaining the needed capacity by length; and I construct them of the
"locomotive" type, or with furnaces at one end, intermediate combustion chambers,
and tubes therefrom to the other end. Other forms of boilers may however be
employed if preferred. I construct small coal bunkers, A, on the same level as the
boilers, B; and I construct lower main bunkers, D, across the forward end. of the
engine room, E, and also at the sides of the engine room. I provide hoisting
or elevating apparatus to get the coal from the main bunkers, D, up to the
boiler level or upper bunkers, A. In Figures, 2, and 3, a convenient arrange-
ment of coal elevating and distributing apparatus is shown, this apparatus
comprising an endless belt or chain, G, with buckets for elevating the coal, and
which delivers the coal upon an endless belt, H, arranged horizontally athwartship
for conveying the coal across in front of the several boiler furnaces. The apparatus
is driven by a small donkey engine, J; and it may be placed in any convenient
position either above or below the deck.
With boilers of the kind, and arranged in the manner hereinbefore described it
will be practicable and advantageous to employ mechanical stoking apparatus.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
Constructing a cargo steamer with the boilers above a hold or space for cargo, the
parts of the steamer being arranged and c nbined substantially as hereinbefore
described and as shown in the accompanying diawings.
Dated this Twenty-fifth day of August 1890.
EDMUND HUNT,
Applicant's Agent.