Year: 1898

page_text: We, HERBERT LINDLEY, of Sandon Works, Patricroft, near Manchester, in the
County of Lancaster, Engineer, and BROWETT LINDLEY & Co. LIMITED, of
Sandon Works aforesaid, do hereby declare the nature of this invention to be as
follows:-
:-
This invention relates to that class of governors known as throttle valve
governors, that is to say, governors which are adapted to open or close a throttle
or regulating valve controlling the supply of steam or other fluid to a motive
power engine and whereby such engine is thus governed or caused to run at a
speed as nearly uniform as possible or desirable, and an object of this invention
is to secure a more prompt action in such governors than heretofore usual, that
is to say, that the opening or closing of the throttle or regulating valve controlled
thereby shall occur as soon as possible after the engine has commenced to go
slower or faster either by reason of change of load or other cause. The inven-
tion also has for objects to construct a simple governor and one not liable to
readily get out of order, and also a governor having a considerable amount of
power to overcome the resistance of parts such as the valve itself, the valve spindle
moving in a stuffing box, lever joints and so forth, and such as are indispensable
to transmit the motion of the governor to the valve.
For this purpose a governor according to this invention comprises a centri-
fugal portion in which the centrifugal tendency of a weight caused to revolve
round an axis and at a distance therefrom, is resisted by a spring, and an inertia
portion in which the inertia or momentum of a weight or mass revolving at a
distance from the axis is employed to assist the centrifugal portion of the governor
in moving or operating the throttle valve, the action of such inertia portion of
the governor being most marked when the changes of load, and therefore speed,
in the engine are considerable or sudden and having very little effect when the
changes in speed are very gradual.
In one construction of governor according to this invention, a plate or carrier
is fixed on a rotary shaft, preferably the shaft of the engine, thus dispensing with
belts or other driving gear. On the said plate is fixed a pin parallel to the axis
of the shaft and at a short distance from the shaft, and on this pin is pivoted
or centered a bar or lever of a convenient length and having at each end a weight
or mass, the pivot or bearing being at the centre of the bar or lever which is of
straight form. The weights at the two ends of the bar are unequal and the excess
of one weight over the other constitutes the centrifugal weight of the centrifugal
portion of the governor, and a spring is employed to resist the centrifugal force
of this weight when the governor is rotated. The spring is attached to the bar
carrying the weights in any convenient manner, the tendency of the spring being
to pull the centrifugal or heavier weight in towards the centre of the shaft on
which the governor is mounted. Instead of using unequal weights, the necessary

page_text: preponderating effect of one weight over the other may sometimes be obtained by
arranging one weight to slide on the bar and fixing it at a greater radius than
the other. Stops are provided to limit the motion of the bar, and such stops
may conveniently be formed on the plate carrying the governor, which may also
carry the abutment or support for one end of the spring. On causing the
governor to rotate, as by rotation of the engine shaft on which it is fixed, it will
be evident that the centrifugal weight will tend to seek a position as far from
the centre of the shaft as possible, causing the bar to partly turn on its pivot,
the motion of the bar and weight being resisted by the tension or force of the
spring. The weights at each end of the bar, comprising the equal inertia weights
as well as the excess or centrifugal weight, are, as long as the engine is running,
revolving round the axis of the shaft and at a distance therefrom, the said dis-
tance being usually about four or five times, or thereabouts, the distance between
the pivot on which the weight bar is mounted and the centre of the shaft. The
tendency of these revolving weights is to maintain the speed at which they are
travelling at any instant, and if the engine shaft suddenly increases or decreases
in angular speed, to cause the bar on which they are fixed to partly turn on its
pivot in one direction or the other. The parts are so arranged that the tendency
of this inertia effect is to turn the bar on its pivot in the same direction as it
will be turned by the centrifugal weight and spring, due to changes of speed
in the engine shaft.
In order to transmit the relative motion between the weight bar and the plate
that carries the pivot on which the bar turns, to a throttle or regulating valve,
there is provided a shaft or spindle mounted in bearings fixed on the carrier or
plate, the axis of this shaft being at right angles to that of the engine shaft
and parallel to the weight bar, when this is in its central or mean..
position, and
at a convenient distance from the same. Attached to the weight bar at a con-
venient distance from its pivot, is a short arm that terminates in a spherical
part. A similar arm or lever, also ending in a spherical part, is attached to one
end of the above mentioned shaft or spindle, and the two spherical parts are con-
nected by a link adapted to transmit the rotatory motion of the weight bar,
which is in a plane at right angles to the engine shaft, to the aforesaid arm on the
shaft or spindle which rotates in a plane parallel to the engine shaft. At the
other end of the shaft or spindle is fixed a forked lever arranged to move or
slide a sleeve longitudinally either on the engine shaft, or on a prolongation of
the same, thus converting the angular motion of the weight bar into a longi-
tudinal motion of the sleeve which is co-axial with the engine shaft. From this
sleeve it is easy to transmit motion by levers and links or other suitable means
to a throttle valve controlling the supply of steam to the engine; the details
of such transmitting mechanism allow of great variety of construction and being
cf a nature well understood, do not of themselves form any part of this invention.
.. 1
00
1 1
רד A
1000
improvements in Engine Governors.
We, HERBERT LINDLEY, of Sandon Works, Patricroft, near Manchester, in the
County of Lancaster, Engineer, and BROWETT LINDLEY & Co. LIMITED, of
Sandon Works aforesaid, do hereby declare the nature of this invention and in

page_text: what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement;-
This invention relates to that class of governors known as throttle valve
governors, that is to say, governors which are adapted to open or close a throttle
or regulating valve controlling the supply of steam or other fluid to a motive
power engine and whereby such engine is thus governed or caused to run at a
speed as nearly uniform as possible or desirable, and an object of this invention
is to secure a more prompt action in such governors than heretofore usual, that
is to say, that the opening or closing of the throttle or regulating valve controlled
thereby shall occur as soon as possible after the engine has commenced to go
slower or faster either by reason of change of load or other cause. The inven-
tion also has for objects to construct a simple governor and one not liable to
readily get out of order, and also a governor having a considerable amount of
power to overcome the resistance of parts such as the valve itself, the valve spindle
moving in a stuffing box, lever joints and so forth, and such as are indispensable
to transmit the motion of the governor to the valve.
For this purpose a governor according to this invention comprises a centri-
fugal portion in which the centrifugal tendency of a weight caused to revolve
round an axis and at a distance therefrom, is resisted by a spring, and an inertia
portion in which the inertia or momentum of a weight or mass revolving at a
distance from the axis is employed to assist the centrifugal portion of the governor
in moving or operating the throttle valve, the action of such inertia portion of
the governor being most marked when the changes of load, and therefore speed,
in the engine are considerable or sudden and having very little effect when the
changes in speed are very gradual.
In the accompanying drawings Fig. 1 is an end elevation, and Figs. 2 and 3
are opposite side views of a governor constructed according to this invention.
A is a rotary shaft, preferably the main crank-shaft of the engine, or a pro-
longation thereof, on which is fixed the plate or carrier 13 of the governor, thus
dispensing with belts or other driving gear. The plate B is formed with a boss
in which is fixed at a short distance from the shaft A a pin C parallel to the
axis of the said shaft, and on this pin is pivoted or centered a bar or lever D
of a convenient length and having at each end a weight or mass E, E¹, the pivot
or bearing C being at the centre of the bar or lever, which is of straight form.
The weights at the two ends of the bar are unequal and the excess of the
weight E over the weight E constitutes the centrifugal weight which on the
rotation of the shaft A tends to move away from the centre of rotation. The
lighter weight E may be made hollow, so as to receive weights for the purpose
of adjusting the speed of the governor. I is a spring which resists the cen-
trifugal force of the weight E when the governor is rotated. The spring is
attached to the bar D in any convenient manner and to a bracket or support G
formed on the carrier B by means of a screw H and shackle I. The screw H
serves to extend more or less the spring and forms an adjustment by which the
speed of the engine can be varied, or by which the astaticism or range can be
altered in a manner now well understood. The tendency of the spring is to
turn the lever 1 about its pivot C, in such a manner that the centrifugal or
heavier weight E will move in towards the centre of the shaft A. Instead of using
unequal weights, the necessary preponderating effect of one weight over the other
may sometimes be obtained by arranging one weight to slide on the bar and
fixing it at a greater radius than the other. The bar 1) is provided at a point
about midway between the weight E and the pivot C with a short projecting arm
or stud D ending in a spherical part J. A short shaft or spindle K mounted at
right angles to the shaft A in bearings LL¹ carried on the plate B is provided
with an arm M also ending in a similar spherical part, the arms D* and M being
coupled together by a link N so that the motion of the one is transmitted to the
other. It is necessary to provide the said arms with spherical ends, or with

page_text: equivalent forms of connection to the link N, because the plane of rotation of
bar D is at right angles to that of the arm M. On the shaft or spindle K is
secured a forked lever O, the fork of which spans the shaft A and is provided
with pins or studs that engage in a groove in a sleeve P sliding freely along the
shaft A. Stops Q, Q' are provided to limit the motion of the bar D.
On causing the engine shaft A and governor to rotate in the direction of the
arrow Fig. 1, it will be evident that the centrifugal weight E¹ will tend to seek
a position as far from the centre of the shaft A as possible, causing the bar D
to partly turn on its pivot, the motion of the bar and weight being resisted by
the tension or force of the spring F. The weights E, E are, as long as the
engine is running, revolving round the axis of the shaft A and at a distance
therefrom, their tendency being to maintain the speed at which they are travel-
ling at any instant, and, if the engine shaft suddenly increases or decreases in
angular speed, to cause the bar D to partly turn on its pivot C in one direction or
the other. The parts are so arranged that the tendency of this inertia effect is to
turn the bar D in the same direction as it will be turned by the action of the
centrifugal weight and spring, due to changes of speed in the engine shaft.
It is evident that as the bar D) is caused to turn about its pivot C, its motion
will be transmitted through the arm J, link N, arm M, shaft K and lever 0
to the sleeve P, whence it can be transmitted by means of a forked lever R and
links or other suitable and well known means to a throttle valve controlling the
supply of steam or other fluid to the engine.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
1. An engine governor arranged to operate a throttle valve controlling the
supply of fluid to the engine and comprising a rotary carrier or plate having
pivoted thereto a weighted inertia bar or lever which, upon a variation in the
speed of the engine, is cause by its inertia and the action of centrifugal force
and by a spring to turn about an axis parallel to and at a distance from the axis
of rotation of said carrier or plate, the motion of said bar or lever being com-
municated to a shaft mounted in bearings on the carrier or plate and having its
axis in a plane at right angles to the axis of rotation of the said carrier or plate,
and thence to the engine throttle valve substantially as described.
2. An engine governor constructed, arranged and operating substantially as
described with reference to and shewn in the accompanying drawings.
1000
Dated this 22nd day of September 1899.
For the Applicants,
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.