Improvements in Steam Engines.
Year: 1890

page_text: Date of Application, 17th Nov., 1890-Accepted, 20th Dec., 1890
་ལསསམ་
Improvements in Steam Engines.
We, CHARLES WELLS, and JOSEPH WILLIS, of No. 115, Great Titchfield Street, in
the Administrative County of London, Engineers, 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:-
Our invention relates to improvements in compounding diagonal marine steam
engines. Its object is to economise working expenses in the direction of reducing the
consumption of fuel without complicating the construction of the engine.
In carrying our invention into effect, we replace one of the high pressure cylinders
by a low pressure one. The condensers are of the surface type, and consist of one or
more pipes arranged by the side of the keel.
The pump is placed in an inclined position, and is driven from the piston rod of one
of the cylinders, to which its own piston rod is suitably connected for that purpose.
In order that our invention, and the means by which it is to be carried into
practical effect, may be thoroughly understood, we will now describe them in detail,
referring in so doing to the accompanying drawing which is to be taken as part of
this Specification and read therewith. It is a transverse elevation illustrating the
application of the invention to a diagonal marine screw engine.
A is the steam supply from the boiler; B, the high; and C, the low pressure
cylinder.
D, D are a pair of pipes which together constitute the surface condenser. They are
fixed outside the hull for the purpose of utilising the sea water as the condensing
agent, and close up to the keel for the purpose of protecting them from being injured
by contact with any solid obstacles which may happen to lie in the course of the
vessel.
E is the exhaust pipe from the low pressure cylinder into the condenser; and F is
the suction pipe from the latter to the pump G. The piston rod g of the latter is
shewn as connected to the cross head c of the low pressure cylinder, by a link h,
through which the motion of the said cross head is communicated directly to the piston
rod of the said pump.
The connection of the link is not necessarily with the cross head, but may be with
any other suitable part of the piston rod or connecting rod of the cylinder.
The axes of the said cylinder and pump are necessarily at a proper angle for the
communication of the said motion. We have shewn them as making an obtuse angle
which we consider to be the most convenient arrangement. They might be at an
angle supplementary of the one in the figure, but it is self evident that the angle,
whatever it may be, must be more or less than a right angle.
I is the hot water tank ; and i, the pipe delivering into it from the pump G. j is a
relief pipe.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. Compounding diagonal marine engines by replacing one of the high pressure
cylinders by an equivalent low pressure cylinder and connecting the latter with a
surface condenser of pipes fixed under the hull, as set forth.
2. The combination of a crosshead or other suitable part of one of the cylinders of
condensing diagonal marine engine, link, and pump-piston rod, as set forth.
3. The combination with a compound marine engine of external surface condenser

page_text: and pump worked directly from one of the cylinder cross-heads or other suitable part,
as set forth.
Dated this 17th day of November 1890.
PHILLIPS & LEIGH,
No. 22, Southampton Buildings, Chancery Lane, W.C.,
Agents for the Applicants.