Improvements in Steering Engines.
Year: 1894

page_text: Date of Application, 20th Mar., 1894
Complete Specification Left, 19th Dec., 1894-Accepted, 9th Feb., 1895
Improvements in Steering Engines.
I, JOHN HASTIE, of Kilblain Engine Works, Greenock, in the County of
Renfrew, 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 to improve and simplify the construction of
steering engines.
gear.
In carrying out my invention I combine, preferably in one casting, two steam
cylinders the pistons of which are connected to cranks at right angles on a shaft
having on it a worm gearing with a worm-wheel on a second shaft on which is
fixed a barrel or pair of barrels for acting through chains or ropes on the rudder
In order to distribute strain and diminish wear and tear the worm is made
to act on several teeth of the worm at once its ends being larger in diameter than
its middle part. The controlling-valve chamber is between the valve casings of
the two cylinders, and the controlling valve is of the rocking or Corliss type,
its spindle extending through a stuffing box towards the crank shaft and having
on it a toothed sector by means of which it is moved. The toothed sector on the
controlling-valve spindle is acted on by a toothed sector on a tubular boss which
is loose on the handing shaft and which has on a stud upon it a bevil wheel gearing
with two bevil wheels, one fast on the handing shaft and the other fast on a
tubular shaft. The tubular shaft has on it a small worm wheel gearing with the
worm on the crank shaft. The parts are arranged so as, in a well known way, to
bring about the return of the controlling valve to its neutral position by the
action of the engine due to operation of the handing shaft.
Dated this Nineteenth day of March 1894.
TET I
EDMUND HUNT,
Applicant's Agent.
Improvements in Steering Engines.
4+297)
1, JOHN HASTIE, of Kilblain Engine Works, Greenock, in the County of
Renfrew, North Britain, Engineer, do hereby declare the nature of this invention
aud 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 to improve and simplify the construction of
steering engines.
In carrying out my invention I combine, preferably, in one casting, two steam
cylinders the pistons of which are connected to cranks at right angles on a shaft,
having on it a worm gearing with a worm wheel on a second shaft on which
is fixed a barrel or pair of barrels for acting through chains or ropes on the rudder
gear. The controlling valve chamber is between the valve casings of the two
cylinders and the controlling valve is of the rocking or Corliss type, its spindle
extending through a stuffing box towards the crank shaft and having on it a

page_text: toothed sector by means of which it is moved. The toothed sector on the
controlling-valve spindle is acted on by a toothed sector on a tubular boss which
is loose on the handing shaft and which has on a stud upon it a bevil wheel gearing
with two bevil wheels, one fast on the handing shaft and the other fast on a
tubular shaft. The tubular shaft has on it a small worm wheel gearing with the
worm on the crank shaft.
And in order that my said invention and the manner of performing the same
may be properly understood, I hereunto append two sheets of explanatory
drawings, to be hereinafter referred to, and showing my improved steering
engine.
Figure, 1, on Sheet, 1, of the drawings is a sectional plan. Figure, 2, on
Sheet, 2, is a-sectional elevation, and Figure, 3, is a perspective view of details.
In these drawings the same reference letters and numerals are used to mark the
same or like parts wherever they are repeated.
I combine preferably in one casting, two steam cylinders, A, and B, the pistons
of which are connected to cranks, C, and D, at right angles on a shaft, F, having
on it a worm, G, gearing with a worm wheel, H, on a second shaft, J, on which is
fixed a barrel (or pair of barrels) K, for acting through chains or ropes on the
rudder gear. In order to distribute strain and diminish wear and tear the
worm, G, is made to act on several teeth of the worm wheel, H, its ends being
larger in diameter than its middle part. The controlling valve chamber, L, is
between the valve casings, M, of the two cylinders, A, and B, and the controlling
valve, N, is of the rocking or Corliss type, its spindle, P, extending through a
stuffing box, Q, towards the crank shaft, F, and having on it a toothed sector, R, by
which it is moved. The toothed sector, R, on the controlling-valve spindle, P,
is acted on by a toothed sector, S, on a tubular boss, T, which is loose on the
handing shaft, V, and which has on a stud, VJ, upon it a bevil wheel, V 2,
gearing with two bevil wheels, W 1, and W 2, the one, W 1, fast on the handing
shaft and the other fast on a tubular shaft, W 3, on the handing shaft. The
handing shaft, V, is turned either by the shaft, X, or by the handwheel, X 1, and
acts by the bevil wheel, W 1, on the bevil wheel, V2, which (as the bevil
wheel, W 2, is unable to move excepting with the worm, G) in turning is carried
round the axis of the handing shaft, and causes the sector, S, to move the
sector, R, and consequently the controlling valve, N. The tubular shaft, W 3, has
on it a small worm wheel, W 4, gearing with the worm, G, on the crank shaft, F.
The parts thus arranged in a well known way, bring about the return of the
controlling valve, N, to its neutral position by the action of the engine due to the
operation of the handing shaft, V.
Having now particularly described and ascertained the nature of my said inven
tion and in what manner the same is to be performed, 1 declare that what 1
claim is:
The combination and arrangement of parts constituting the improved steering
engine substantially as herein before described, and as shown in the accompanying
drawings.
Dated this Eighteenth day of December 1894.
EDMUND HUNT,
Applicant's Agent.