Improvements in Governors for Steam Engines.
Year: 1886

page_text: PROVISIONAL SPECIFICATION.
Improvements in Governors for Steam Engines.
I EDWARD JONES of 13 Blenheim Square, Leeds in the County of York,
Mechanical Engineer do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in governors for steam engines in which
valve operating excentrics are acted upon directly by weights and springs under the
influence of the centrifugal force generated by the speed of the revolving crank shaft,
such, for example, as the governor described in the specification of patent granted to
Pardon Armington dated August 16th 1882, No. 3914, for improvements in steam
engines.
The class of engines to which the governors are described in the said specification
as being attached, are very suitable for electric lighting installations, but it has been
found inconvenient, while the engine is running, to fix the speed of the same so as to
make it suitable to an increased or diminished number of lamps, when the dynamo is
not compound-wound or self-regulating.
Now the object of the present invention is to provide means by which the speed
may be readily fixed while the engine is running, and without interfering with its
regulating or governing power.
To this end, in place of attaching the springs to fixed points, as shown in the
specification before referred to, 1 attach each spring to one end of a rock lever suitably
mounted on an axle carried by the disc or wheel to which the governor weights or
levers are attached.
The other end of each lever is connected by a link with one arm of a bell crank
lever carried by a bracket formed with the boss of the wheel. The other arm of the

page_text: bell crank lever is connected to a collar mounted loosely on a threaded axle carried
in a suitable bearing on the top of a standard, and in line with the axis of the main
shaft.
By screwing this axle in or out, by means of a hand wheel or other arrangement,
the bell cranks will be rocked, and through the links and rock levers, put more or
less tension on the springs, and thereby increase or diminish the speed of the engine,
as may be required.

page_text: COMPLETE SPECIFICATION.
Improvements in Governors for Steam Engines.
I EDWARD JONES of 13 Blenheim Square, Leeds in the County of York,
Mechanical 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 :—
This invention relates to improvements in governors for steam engines, in which
valve operating excentrics are acted upon directly by weights and springs under the
influence of the centrifugal force generated by the speed of the revolving crank shaft,
such, for example, as the governor described in the specification of patent granted to
Pardon Armington dated August 16th 1882, No. 3914, for improvements in steam
engines..
The class of engines to which the governors are described in the said specification
as being attached, are very suitable for electric lighting installations, but it has been
found inconvenient, while the engine in running, to fix the speed of the same, so as to
make it suitable to an increased or diminished number of lamps when the dynamo is.
not compound wound or self-regulating.
Now the object of the present invention is to provide means by which the speed
may be readily fixed while the engine is running, and without interfering with the
regulating action of the governor.
To this end, in place of attaching the springs to fixed points, as shown in the
specification before referred to, I attach each spring to one end of a rock lever
suitably mounted on an axle carried by the disc or wheel to which the governor
weights or levers are attached.
The other end of each lever is connected by a link with one arm of a bell crank
lever carried by a bracket formed with the boss of the wheel. The other arm of the
bell crank lever is connected to a collar mounted loosely on the end of a screw
carried in a suitable bearing on the top of a standard, and in line with the axis of the
main shaft.
By screwing this axle in or out, by means of a hand wheel or other arrangement,
the bell cranks will be rocked, and through the links and rock levers, put more or
less tension on the springs, and thereby increase or diminish the speed of the engine,
as may be required.
In the accompanying drawing, Fig. 1 is a side elevation of the fly wheel of a steam
engine fitted with the governing mechanism, the hand adjusting wheel being removed
to more clearly show the mechanism. Fig. 2 is a front view, and Fig. 3 a plan of
the same.
A is the crank shaft of the engine, B the fly wheel carrying the governing
mechanism, and made of a width suitable to receive a driving belt, and C is the valve
opening excentric connected, as usual, with the slide or other valve of the engine.
This excentric is mounted on a secondary excentric C₁, which has its bearing on the
crank shaft.

page_text: D D' are the governor weights pivotted to studs d secured to the arms of the fly
wheel. These governor weights D D¹ are connected to the compound excentric by
links, the weight D being connected to the primary excentric C by the link C³, and
to the secondary excentric C¹ by the link C³, the other governor weight D¹ being con-
nected to the excentric C₁ by the link C-The governor weights are also connected
to strong helical springs E E, to counterbalance the centrifugal force of the weights
when the engine is running.-The construction, arrangement, and operation of the
governor weights D D¹ and excentrics CC is similar to that described in the above
imentioned specification, and it will be therefore unnecessary to more particularly
refer to those parts, as they form no part of the present invention.
The counterbalance springs E, in place of being attached to fixed points, are each
attached to one end of a rock lever D², which is fulcrummed between lugs b b cast on
the inner periphery of the fly wheel B.-The opposite end of each of these levers D²
is connected by a link rod d² with one arm of a bell crank lever D³ fulcrummed
between brackets & cast with the boss of the fly wheel. The other arms of the bell
crank levers D³ D3 are pivotted to a collar F, which is mounted loosely on the end of
a screw Farranged in line with the crank or fly wheel axle.-This screw passes
through a threaded sleeve attached to the boss of a hand wheel G, and working in a
bearing in a standard H situate in front of the fly wheel and bolted to the bed plate
of the engine.
If it is required to alter the speed of the engine while running, it will only be
necessary to turn the hand wheel G to work the screw in or out, thereby rocking the
bell crank levers D³.-This rocking of the levers D³ will, through the link rods d² and
rock levers D2, put more or less tension on the springs E, thus causing a change of
position in the excentrics, and open or close the steam valve, thereby effecting the
increase or decrease in the speed of the engine, as may be required, without
interfering with the efficient regulating action of this governing mechanism.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed, I declare that what I claim is :-
The arrangement of mechanism herein shown and described for adjusting the
tension of the springs E while the engine is running, whereby the speed of the engine
may be regulated and controlled without stopping, and without interfering with the
efficient regulating action of the governor.
Dated this 92nd day of Lul 1007