Improvements in Marine Engine Governors.
Year: 1894

page_text: Date of Application, 5th Jan., 1894
Complete Specification Left, 1st Aug.. 1894-Accepted, 22nd Sept., 1894
PROVISIONAL
SPECIFICATION.
Improvements in Marine Engine Governors.
I, JULIUS GRIEBENOW, of 20 Shore, Leith, in the County of Midlothian, North
Britain, Engineer do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in marine engine governors and has for
its object to prevent the racing of the engines in stormy weather.
In the carrying out of my invention I employ a ball capable of rolling along a
trough or equivalently shaped rocking lever. As the vessel pitches, the ball rolls
from the centre or pivot of the lever to the one or other of the ends of the rocking
lever, and each end of the lever is in connection, through gear hereinafter described,
with the steam throttle valve. The said gear is as follows.
1 employ a cylinder having a piston and piston rod; the piston rod being con-
nected to the throttle valve. Each end of the cylinder is in communication with
the condenser, the valves for this purpose being opened or closed by the rocking of
the lever, through the medium of connecting rods. An air valve at each end of the
cylinder is also provided which is also operated by connecting rods from the ends
of the rocking lever. When the one end of the rocking lever is down, under the
influence of the rolling ball, the condenser valve at that end of the cylinder is shut
and the air valve at the same end of the cylinder is opened. At the same time the
condenser valve at the other end of the cylinder, is opened by the tilting up of the
rocking lever and the air valve at the same end of the cylinder is closed, the piston
thus travelling from the first mentioned end of the cylinder to the last mentioned
end thereof and the throttle valve thus actuated.
When the opposite end of the rocking lever is down by the ball rolling to that
end, the air valve at that end of the cylinder is opened and the air valve at the
opposite end of the cylinder is closed; also the condenser valve at the first men-
tioned end of the cylinder is closed and the corresponding valve at the other end
of the cylinder is opened, the piston being thus driven in the opposite direction and
the throttle valve thus actuated.
The governor must be regulated to suit different classes of vessels or various
depths of the loading of the vessel, because, for example, in the case of a lightly
loaded vessel, a small deviation of the vessel's level from the water level would
suffice to close the throttle valve and vice versa. This may be effected by adjusting
the angle or level of the rocking level upon which the ball rolls, at the after
or propellor end of the vessel.
Dated this 4th day of January 1894.
COMPLETE SPECIFICATION.
Improvements in Marine Engine Governors.
1, JULIUS GRIEBENOW, 20 Shore, Leith, Midlothian, N.B. 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:-
In the carrying out of my invention I employ a ball A (Fig. 1) capable of rolling

page_text: along a trough or cage attached to a rocking lever B moving on a central
pivot C.
As the vessel pitches the ball A rolls from the centre of the lever to one or other
of the ends of the rocking lever, and each end of the lever is in connection through
gear hereinafter described, with the steam throttle valve. The gear is as
follows:
I employ a cylinder D having a piston E and piston rod F the piston rod being
connected with the steam throttle valve.
Each end of the cylinder is in communication with the condenser, through the
passages and O₁ the plug valves G and G' for this purpose being opened or
closed by the rocking of the lever B through the medium of the connecting rods H.
and H.
Air valves I and 11 at each end of the cylinder are also provided, which are
operated by the connecting rods J and J¹ from the ends of the rocking lever. The
action of the machine is as follows: When through the pitching of the vessel the
ball A rolls to the end of the rocking lever marked P. (Fig. 1) that end is
depressed, and the plug valve G to condenser is closed and the air valve I
is opened; thus placing that end of the cylinder in communication with the
atmosphere.
At the same time the plug valve G₁ to condenser is opened and the air valve l'
closed thus placing that end of the cylinder in communication with the condenser,
and impelling the piston and rod inwards and thereby actuating the throttle
valve.
When the vessel pitches so as to cause the ball A to roll to the end of the lever
marked that end becomes depressed and the reverse of the beforementioned
movements takes place, thus;
The plug valve G₁ to condenser is closed and the air valve I' is opened, thus
placing that end of the cylinder in communication with the atmosphere; at the
same time the plug valve G is opened and the air valve I is closed, thus placing
that end of the cylinder in communication with the condenser and impelling the
piston and rod outwards and thereby actuating the throttle valve.
Two springs L and L' are fitted to the piston to prevent the cylinder covers or
rods being broken should any of the gear become detached; and all holes in rocking
lever with the exception of central pivot, are oblong to allow for the rectilinear
motion of the valve rods.
In Fig. 2. M leads to the condenser and is common to both ends of the cylinder,
and N is a bracket for attaching the governor to any suitable part of the hull or
engines.
The rocking lever can be made of any length to suit any particular vessel and
can be made to suit the different trims of vessels when such affects the level of the
rocking lever by adjusting the movable plate T (Fig. 1.) by the screw K or by a
similar plate at both ends of the rocking lever. The connecting rods can also be
connected to valve rods by a gudgeon pin to obviate the necessity of making oblong
holes in the rocking lever.
The same letters apply to both figures.
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 novelty of using a rolling ball in a trough or cage as the controlling
power or principle of the governor and I claim the sole right to make marine
governors on this principle.
Dated this 1st day of September 1894.
JULIUS GRIEBENOW.