Improvements in Marine Engines.
Year: 1892

page_text: Date of Application, 28th June, 1892
Complete Specification Left, 27th Mar., 1893-Accepted, 2nd June, 1893
PROVISIONAL SPECIFICATION.
Improvements in Marine Engines.
I, WILLIAM CARLILE WALLACE, partner in the firm of Blackwood and
Gordon, Shipbuilders and Engineers, Port Glasgow, North Britain, do hereby
declare the nature of this invention to be as follows:-
This invention relates to improvements in marine engines and consists in placing
the three cylinders athwartship and vertical, with the pistons working on to the
same crank. The low pressure cylinder is placed in the middle, and the high and
intermediate to either side. The low pressure piston acts direct on the crank by
means of a connecting rod in the ordinary way. The piston of each of the other
two cylinders is connected by a link to the outer end of its connecting rod, which
end is guided in its path by a lever centered to a fixed point of the framing,
From this lever the air pump may be worked.
The valves may be actuated either by means of the ordinary link motion, or as
the pistons have the same relative position to the crank one excentric may be
used; the engine being reversed by sliding the excentric from the go-ahead to the
go-astern position by any means at present in use for doing so. By this arrange-
ment I obtain a very much shorter engine, and also I reduce the number of bearings
and simplify the construction generally.
Dated this 27th day of June 1892.
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Agents.
COMPLETE SPECIFICATION.
Improvements in Marine Engines.
1, WILLIAM CARLILE WALLACE, partner of the firm of Blackwood and
Gordon, Shipbuilders and Engineers, Port Glasgow, North Britain, 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 improvements in marine engines, and consists in placing
the three cylinders athwartship and vertical with the pistons working on to the
same crank. The low pressure cylinder is placed in the middle, and the high and
intermediate to either side. The low pressure piston acts direct on the crank by
means of a connecting rod in the ordinary way. The piston of each of the other
two cylinders is connected by a link to the outer end of its connecting rod, which
end is guided in its path by a lever centered to a fixed point of the framing.
From this lever the air pump may be worked.
The valves may be actuated either by means of the ordinary link motion, or as
the pistons have the same relative position to the crank one eccentric may be used;
the engine being reversed by sliding the eccentric from the "go-ahead" to the
"go-astern" position by any means at present in use for doing so.
By this
arrangement I obtain a very much shorter engine, and also I reduce the number of
bearings and simplify the construction generally.
In order that my invention may be properly understood and readily carried into
effect I have hereunto appended three explanatory sheets of drawings in the
several figures of which corresponding parts are marked with the same letters of
reference.

page_text: Figure 1, Sheet 1, is a part sectional front elevation of my improved inverted
steam engine with three cylinders on the triple expansion principle.
Figure 2, Sheet 1, is an end elevation of the same.
Figure 3, Sheet 2, is a plan, of the same showing arrangement of cylinders and
relative position of valves.
Figure 4, Sheet 2, is a plan with cylinders removed showing eccentrics and valve
levers.
Figure 5, Sheet 3, is a front elevation showing arrangemeut for working valves,
the eccentrics being loose on square end of shaft, and arrangement employed for
shifting eccentrics on shaft by sliding them from ahead to middle and astern gears.
A is the crank shaft, B the crank, C crank pin, D crank shaft bearings, E sole
plate, F side columns, G front columns, E high pressure cylinder, I intermediate
cylinder, J low pressure cylinder, K₁ K² K³ piston rods, L' L2 L³ piston rod
crosshead, M² M³ connecting rod crosshead, N2 N3 links, 02 03 tie links,
PP connecting rods, Q guides, R slippers, S valves, T valve spindles, U eccen-
trics, Veccentric rods, W valve levers connecting valve spindle to rocking shaft,
X lever connecting eccentric rod to rocking shaft.
The low pressure cylinder J is placed in the middle, and the low pressure piston
rod acts direct on the crank by means of a connecting rod P₁ in the ordinary
way. The high and intermediate cylinders II and I are placed one on each side
of the low pressure cylinder. The piston rods K³ and K³ of the cylinders H
and I are connected by the links N2 N3 to the outer end of their connecting rods P²
and P. The outer ends of the connecting rods P2 and P3 are guided in their
respective paths by the tie links O2 and 03. These links are centered to fixed
points YY of the framing.
My invention has been described as applied to triple expansion engines, but it
is obvious that it may be adopted for quadruple expansion by any arrangement of
tanden cylinder.
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:-
:-
In three or more cylinder engines the placing of three of the cylinders at right
angles to the shaft with the pistons all working to one crank substantially as
described with reference to the accompanying drawings.
Dated this 24th day of March 1893.
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Agents.