Improvements in the Steering Engines of Steam Ships.
Year: 1897

page_text: Date of Application, 8th Dec., 1897
1000
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PROVISIONAL SPECIFICATION.
Improvements in the Steering Engines of Steam Ships.
We, PHILIP WATTS, Naval Architect, and MAGNUS SANDISON, Marine Engineer,
both of Elswick Works, Newcastle-on-Tyne, in the County of Northumberland,
do hereby declare the nature of this invention to be as follows:-
-
This invention relates to improved arrangements whereby the steering engines
in steam ships may attain greater economy in the consumption of steam than is
practicable with the arrangements hitherto adopted.
The invention is intended to apply chiefly to war ships and other vessels which
may be required to steam at reduced speeds for long intervals.
In our arrangement two high pressure steering engines of different sizes are
provided each preferably having two cylinders. These may be placed in the
same or for greater security in separate watertight compartments if desired.
These engines and their cylinders are EO arranged and proportioned to one
another as to allow the steering of the vessel to be performed in the following
ways:
When the vessel is steaming at full speed and the full steering power is required
both engines are brought into operation.
Or the larger engine only may be used.
When the vessel is steaming at a low and reduced speed commonly called a
cruising speed" in vessels of war in which case the power required to move the
rudder is comparatively small the smaller of the two engines only is used.
It will be at once seen that the comparative smallness of the cylinders at work
when the vessel is "cruising" will enable the steering to be performed with much
greater economy than if an engine of sufficient power to steer the vessel at full
speed were employed for this purpose; it being well known that the consumption
of steam in an engine working under the latter conditions is very extravagant.
Dated this 7th day of December 1897.
Improvements in the Steering Engines of Steam Ships.
We, PHILIP WATTS, Naval Architect, and MAGNUS SANDISON, Marine Engineer,
both of Elswick Works, Newcastle-on-Tyne, in the County of Northumberland,
do hereby declare the nature of this invention, and in what manner the same is
[Price 8d.]

page_text: to be performed, to be particularly described and ascertained in and by the follow-
ing statement:-
This invention relates to improved arrangements whereby the steering engines
in steam ships may attain greater economy in the consumption of steam than is
practicable with the arrangements hitherto adopted.
The invention is intended to apply chiefly to war ships and other vessels which
may be required to steam at reduced speeds for long intervals.
In our arrangement two high pressure steering engines of different sizes are
provided each preferably having two cylinders. These may be placed in the
same or for greater security in separate watertight compartments if desired.
These engines and their cylinders are so arranged and proportioned to one
another as to allow the steering of the vessel to be performed in the following
ways:-
When the vessel is steaming at full speed and the full steering power is required
both engines are brought into operation.
Or the larger engine only may be used.
When the vessel is steaming at a low and reduced speed commonly called a
"cruising speed" in vessels of war in which case the power required to more the
rudder is comparatively small the smaller of the two engines only is used.
It will be at once seen that the comparative smallness of the cylinders at work
when the vessel is "cruising" will enable the steering to be performed with much
greater economy than if an engine of sufficient power to steer the vessel at full
speed were employed for this purpose; it being well known that the consumption
of steam in an engine working under the latter conditions is very extravagant.
The drawing is a diagram view of steering mechanism arranged according to
this invention.
A is the small engine, and B the large one. C.C are clutches whereby either
or both engines may be connected to the shaft D₁ of the worm D gearing with
the worm wheel E fixed on the shaft E¹ of the tiller gear.
Having now particularly described and ascertained the nature of our said in-
vention, and in what manner the same is to be performed, we declare that what
we claim is:-
1. The combination with the steering gear of a large engine, a small engine
and means whereby either or both engines may be connected to it.
2. Steering mechanism substantially as described and illustrated in the
drawing.