Year: 1894

page_text: Date of Application, 21st Apr.,
1894
22nd Fab 1005
I, ANDREW BETTS BROWN, of Rosebank Iron Works, Edinburgh, in the
County of Mid Lothian, North Britain, Engineer, do hereby declare the nature of
this invention to be as follows, that is to say :-
My said invention has for its object the combining and arranging of steering
machinery in an improved manner.
In carrying out my invention I have the steam-engine or motor details arranged
within a casing which completely encloses them when its cover is secured in position,
the bottom part of the casing and bed frame being formed with feet or flanges to
be bolted to the ship's deck. There are two horizontal cylinders operating on a
crank shaft in the lower part of the casing, the crank shaft having on it a worm
gearing with a wormwheel on an upper shaft which extends to the outside of the
casing and has on its outer end a sprocket or chain wheel to act on a chain the two
parts of which descend to lateral guide pulleys and proceed thence round other
guide pulleys to a quadrant on the rudder head. The plane of the joint of the
casing cover is coincident or nearly so with that of the axis of the upper shaft
and with the divisions of its bearings. The inner end of the upper or wormwheel
shaft has fixed to it an internally screwed tube in which works a screw-threaded
part of the spindle which moves the controlling valve of the engines. The valve
spindle extends through the elongated boss of a bevil wheel which can turn it by means
of a groove and key, whilst the spindle can move end ways through the boss of the
bevil wheel. The bevil wheel is, through any suitable gearing, turned by the
steering or handing wheel, and when turned it causes the spindle to move endways
because of the screwing action between it and the wormwheel shaft, the spindle
being afterwards returned to its neutral position by the rotation of the worm wheel
shaft.
The various parts requiring it are supplied with lubricant from a reservoir placed
on the casing cover sufficiently high to command all the parts by gravitation,
arrangements being made to drain the lubricant into a receptacle in the lower part
of the casing and to continually pump or lift it thence up into the reservoir.
Dated this Twentieth day of April 1894.
EDMUND HUNT,
Applicant's Agent.
1, ANDREW BETTS BROWN, of Rosebank Iron Works, Edinburgh, in the
County of Mid Lothian, North Britain Engineer, 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 the combining and arranging of steering
machinery in an improved manner.

page_text: In carrying out my invention I have the steam-engine or motor details within a
casing. There are two cylinders operating on a crank shaft in one part of the
casing, the crank shaft having on it a worm gearing with a worm wheel on a shaft
which extends to the ouside of the casing and has on its outer end a sprocket or
chain wheel to act on a chain the two parts of which descend to lateral guide
pulleys and proceed thence round other guide pulleys to a quadrant on the rudder
head. The controlling valve is actuated by mechanism, hereinafter described.
The various parts requiring it are supplied with lubricant from a reservoir placed
sufficiently high in or on the casing to command all the parts by gravitation,
arrangements being made to drain the lubricant into a receptacle in the lower part
of the casing and to continually pump or lift it thence up into the reservoir.
And in order that my said invention and the manner of performing the same
may be properly understood I hereunto append a sheet of explanatory drawings to
be hereinafter referred to and showing by way of example one modification of
steering machinery as made with my improvements.
Figure, 1, of the drawings is a plan of the machinery; Figure, 2, is an end
elevation; and Figure, 3, is a longitudinal vertical section.
In these drawings the same reference letters are used to mark the same or like
parts wherever they are repeated.
In the modification shown in the drawings the two steam cylinders, A, are
placed horizontally, being bolted to one end of a casing, B, the piston rods and
valve rods extending into the casing. Within the casing, B, the piston rods are
connected to a crank shaft which has fixed on it a worm, C, gearing with a worm-
wheel, D, on an upper shaft, E, which extends to the outside of the casing and has
on its outer end a sprocket wheel, F, to act on a pitch chain, G, the two parts
of which descend to lateral guide pulleys, H, and proceed thence round other guide
pulleys (not shown) to a quadrant on the rudder head. The plane of the joint of
the casing cover, J, may be coincident or nearly so with that of the axis of the
upper shaft, E, when that shaft is horizontal as in the modification shown in
the drawings; it is however shown as being a little higher than the shaft, E. The
inner end of the shaft, E, has fixed to it an internally screwed tube, K, in which
works a screw-threaded part of the spindle, L, which moves the controlling
valve, M, of the engines. The valve spindle, L, extends through the elongated
boss, of a bevil wheel, N, which can turn the spindle by means of a groove and
key, whilst the spindle can move endways through the boss of the bevil wheel.
The bevil wheel, N, gears with a bevil wheel, P, on a vertical shaft, Q, which
transmits motion from a steering or handing wheel, and when the wheel, N, is
turned it causes the spindle, L, to move end ways because of the screwing action
between it and the wormwheel shaft, E, the spindle, L, being afterwards returned
to its neutral position by the rotation of the wormwheel shaft due to the action of
the engine.
A reservoir, R, for lubricant is provided in the cover, J, or upper part of the
casing, B, and from it the lubricant is led by suitable pipes (not shown) to the
various parts requiring lubrication. The used lubricant drains into a part, S, of
the casing forming a receptacle lower than any other part; and from this part the
lubricant is pumped up again to the reservoir, R, by a pump, T, worked by a
bell-crank, U, worked by a pin on a valve rod or piston rod. Any simple pump (T)
may be used but the one used is of a simple construction having a plunger, V,
which has fixed to it a tube, W, extending up to the reservoir, R. The lubricant
enters the pump barrel through lateral openings uncovered by the plunger, V,
when in its highest position, and the descent of the plunger forces the lubricant
up the tube, W.
The steering machinery may be arranged vertically, instead of being horizontal
as in the example shown in the accompanying drawings and herein before described.
In the vertical arrangement the steam cylinders are by preference inverted and
above the upper end of the casing. The lubricant reservoir (R) is placed at
the upper end of the casing (B) that is, at the cylinder end and 'the draining

page_text: recess is placed at the other end. If motion from the steering or handing wheel
is communicated by a vertical shaft, the controlling-valve spindle (L) may be
simply a continuation of that shaft, extending through a stuffing box in the top of
the valve casing. A similar arrangement may, if desired, be adopted in the
horizontal modification when a steering or handing wheel is applied close to the
engine.
The worm, C, is by preference long enough to gear with several teeth of the
worm wheel, D, its diameter increasing towards its ends to follow the convexity of
the wormwheel.
When the steering machinery is required to be capable of being actuated by
hand when steam is not available, two worm wheels may be fitted on the wormwheel
shaft (E) with a clutch between them for engaging one or the other with the shaft.
The added wormwheel has gearing with it a worm on a shaft having on it, or being
geared to a shaft having on it a steering wheel.
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 :-
1. The combination of parts constituting as a whole the horizontal arrangement
of improved steering machinery substantially as hereinbefore described and as
shown in the accompanying drawings.
2. The combination of parts modified to form a vertical arrangement of steering
machinery substantially as hereinbefore described.
Dated this Sixteenth day of January 1895.
EDMUND HUNT,
Applicant's Agent.