IMPROVEMENTS IN HYDRAULIC STEERING ENGINE APPLICABLE FOR OTHER PURPOSES
Year: 1885

page_text: Engines.
I CHARLES STOUT of 12 Westmorland Street in the City of Liverpool in the
County of Lancashire Engineer do hereby declare the nature of my Invention
for IMPROVEMENTS IN HYDRAULIC STEERING ENGINE APPLICABLE FOR OTHER
PURPOSES to be as follows:-
Instead of useing a quadrant, tiller or similar arm; as in common use at present
attached to the rudder stock, which when in action causes an unnecessary strain
on one side of same; I fit a double arm having pins at each end and bored in centre
to fit stock of rudder so that the centre of stock is equi-distant from each pin.
Connected to each pin is a connecting rod actuated by piston rod or trunk working
into a cylinder which cylinders are parallel to each other and the centre line in the
same plane these cylinders are connected to each other by ports that is from the
bottom end of one to the top end of the other and arranged with one plate cut off
valve and one slide valve of the ordinary kind and automatic valves as described
in my Patent No. 5987 and dated 1882 by these means one piston is moving up
when the other is moving down therefore the strain upon the rudder stock is
equalized. To actuate the cut off valve so that the position of the rudder may be
determined I fit a spindle parallel to and in the same plane as one of the trunks or
piston rods, this spindle passes through a gland and stuffing box into the valve
chest and is screwed with differential screws one pitched working into a nut fitted
in cut off valve and the other working into a nut attached to trunk or piston rod,
so that when the trunk or piston moves it causes the spindle to revolve. To
explain this more fully I will suppose the stroke of the trunk to be two feet and
the travel of cut off valve two inches, the pitch of the screw on spindle which is
actuated by nut attached to trunk be six inches then the pitch of screw on spindle
which works into nut in cut off valve will be half inch, therefore if the trunk
moves the whole length of stroke the spindle will make 4 revolutions and the
valve will move two inches. To use this invention for starting engine one con-
necting rod may be directly connected to reversing links, one cylinder may thus
be dispensed with,
In witness whereof I the said Charles Stout have hereunto set my hand this
twenty second dev of Tune are thousand right hundred and sighty fin

page_text: COMPLETE SPECIFICATION.
Improvements in Hydraulic Steering Engines and Starting
Engines.
I CHARLES STOUT of twelve Westmoreland Street in the City of Liverpool
County of Lancashire Engineer do hereby declare the nature of my invention
for IMPROVEMENTS IN HYDRAULIC STEERING ENGINES & STARTING ENGINES and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
Instead of useing a quadrant, tiller, or similar arm as in common use at present
attached to the rudder stock of a ship, I fit a double arm having pins at each end
and bored in centre to fix rudder stock so that the centre of stock is equdistant
from each pin, connected to each pin is a connecting rod actuated by piston and
rod, or trunk working into cylinder which cylinders are parallel to each other and
the centre line in the same plane, these cylinders are connected to each other by
ports, that is from the bottom end of one to the top end of the other, and arranged
with one plate cut off valve and one slide valve of the ordinary kind working upon
a valve face cast upon one of the cylinders with the usual steam and exhaust ports;
by this arrangement the pressure is admitted through the slide valve ports into one
or other end of cylinders and the piston rods or trunks are one forced in and one
forced out thereby developeing almose equal strains upon the arms in opposite
directions thereby moveing the rudder stock as required.
To actuate the cut off valve so that the rudder may be placed in any determined
position I fit a spindle parallel to and in the same plane as one of the pistons rods
or trunks this spindle passes through a stuffing box into the slide valve chest and
is screwed with different pitched screws one pitched screw working into a nut fitted
in the cut off valve and the other pitched screw working into a nut attached to
trunk crosshead, or piston rod, so that when the trunk moves in or out it causes
the spindle to revolve which in turn actuates the cut off valve.
To explain this more fully, I will suppose the stroke of trunk to be two feet and
the travel of valve two inches, the pitch of screw on the spindle which is actuated
by the nut attached to trunk, crosshead, & six inches and of the screw which works
into nut in cut off valve half-inch then if the trunk, piston, &c moves the whole
length of stroke the spindle will make 4 revolutions and the valve will be moved
two inches, and so on in ratio to the pistons movement.
These cylinders are fitted with automatic and adjustable valves as described in
my Patent No. 5987. 1882. which are not required when used as a starting
engine.
To use this invention for a Starting Engine one connecting rod may be directly
connected to the reversing links of the engine to be controlled, and thus the other
cylinder may be dispensed with.
In the case of the Steering Engine the cylinders are secured to the deck, and
in the case of the starting engine the cylinder is secured to frameing of engine to
be controlled.

page_text: In each case the slide valve is actuated by a spindle passing through a stuffing
box in valve chest, which spindle may be moved by wheel or lever, thus allowing
the oil (which I use as a medium and which is kept at a constant pressure by
means of a pump fully described in my Patent No 5987, 1882.) to flow into one
end of cylinder and operating pistons as described.
Having now particularly described and ascertained the nature of my invention
and in what manner the same is to be performed, I declare that what I claim is,
1. A spindle having different pitched screws upon it actuating the cut off valve
in the manner described.
2. The combination of mechanism substantially as described in combination with
the different pitched screw for the purpose described.