Year: 1888

page_text: 1 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:-
The object of this invention is to provide a simple and inexpensive variable cut-off
governor for steam engines.
In carrying out my invention, I place the governor at the end of the driving shaft,
and it consists of a plate secured to the shaft and provided with slide ways in which
work two or more slides. These slides are so arranged that they shall, under the
influence of the centrifugal force, as the plate rotates, slide outwards against the
pressure of a suitable spring.
The slides are connected together by a link or links pivotted to the plate, or in any
other manner, which will ensure the movement of both slides simultaneously in
opposite directions.
One of the slides I form with, or attach to, a crank pin, which will be connected
with the valve, in order to transmit to it the necessary reciprocating motion.
As the slides move, the pin will be caused to assume a more or less excentric
position with respect to the axis of the shaft, and therefore more or less motion will
be given to the valve, or in other words, the cut off will be effected sooner or later,
according to the speed at which the engine is running.
Instead of a crank pin, I may employ an excentric, the excentricity of which will
be regulated by the movement of the slide to which it is attached. In this case, the
governor may be placed on any suitable part of the shaft.
In some cases, I may find it convenient to use only one slide, but I prefer to use
two, or other even number, as the apparatus is thereby balanced, and will work more
evenly.-1 may also use series of friction rollers for the slides to work against, with a
view to reduce friction.
This new governor, which is more particularly applicable to stationary engines,
lends itself readily to change the direction of the engine, if required for any purpose,
for, by taking out the slides, and putting them in again on opposite sides, the engine
can be run in the opposite direction without changing the lead.
D
1
OLL 1
CLL 7000
NEWTON & SON,
Agents for the Applicant.

page_text: 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 :-
The object of this invention is to provide a simple and inexpensive variable cut-off
governor for steam engines.
In carrying out my invention, the governor, which may be placed either at the end
of, or at any other part of the driving shaft, consists of a disc or plate keyed to the
shaft, and provided with radial slide ways in which work slides or weights. These
weights are so arranged that they shall, under the influence of the centrifugal
force, as the disc rotates with the shaft, slide outwards against the pressure of suitable
springs.
The slides or weights are connected together in pairs by a link or links pivotted to
the plate, or secured in any other manner which will ensure the movement of both
slides simultaneously in opposite directions.
One of the slides I form with, or attach to, a crauk pin, which will be connected
with the slide valve, in order to transmit thereto the necessary reciprocating
motion.
As the weights move, the crank pin will be caused to assume a more or less
excentric position with respect to the axis of the shaft, and therefore more or less
motion will be given to the valve, or, in other words, the cut off will be effected
sooner or later according to the speed at which the engine is running.
Instead of a crank pin, I may employ an excentric, the excentricity of which will
be regulated by the movement of the slide to which it is attached. In this case, the
governor may be placed on any suitable part of the shaft, the excentric being slotted
to allow for the shaft passing through it.
In some cases, I may find it convenient to use only one slide, but I prefer to use
two, or other even number, as the apparatus is thereby balanced, and will work more
evenly, but I claim the right to use one slide if desired.-I may also use series of
friction rollers for the slides to work against, with a view to reduce friction.
This new governor, which is more particularly applicable to stationary engines,
Jends itself readily to change the direction of the engine, if required, for any purpose,.
for by taking out the slides and putting them in again on opposite sides, and changing
the position of the crank pin, when the crank pin is employed, the engine can be run
in the opposite direction without changing the lead.
In the accompanying drawings, I have shown, in Sheet I, my improved governor
with the crank pin arrangement, and in Sheet II the same with the excentric
arrangement.
Fig. 1 is a sectional elevation, Fig. 2 a front view; Fig. 3 is a sectional plan
on the line Fig. 2; Fig. 4 is a plan view of a slight modification, and Fig. 5 is a
front view of the oiling device.-Figs. 6 7, and 8 are views corresponding to Figs. 1,
and 3

page_text: The same letters refer to similar parts in all the Figures.
A is the driving shaft, and B is the plate or disc, which serves as the slide or
weight carrier.-Care the sliding weights, C being the weight which carries
the crank pin or the excentric, and C the counter-balance weight. D is the link,
consisting of a ring or disc which fits into the centre of the disc or plate in con-
tinuation of the axle, and is formed with two projecting pins D', which work in
transverse slots or grooves C2, formed in the back of the weights C C³, such link
serving to connect the two weights together, so that one cannot move without the
other. E is the crank pin or excentric, which is secured to the weight C, and
gives motion to the slide valve of the engine with which it is connected, in any
suitable manner. F is a locking pin to prevent the crank pin E becoming unscrewed.
This pin F also serves to protect the hole into which it is screwed, from injury, as
this hole is intended to receive the crank pin under certain conditions, which will
hereafter referred to.-G is a stop pin to prevent the weights flying out should the
engine be running at an excessive speed.
The weights are recessed to receive springs H, which are strung on a bolt H'. This
bolt passes right through both weights, and is provided at opposite ends with nuts by
which the tension of the springs can be regulated. The tendency of these springs is
always to force or draw the weights together, and this tendency is increased or
diminished according to the tension, so that these springs act as controlling springs
to regulate the speed of the engine.
I is an oiling arrangement for lubricating the crank pin E.
Instead of slide ways for the weights, I may use rollers J, as shown in Fig. 4.
It will be seen, in Sheet II, that the excentric is placed at some intermediate point
on the shaft. This necessitates a slight modification in the arrangements of the
springs, two springs H being used for each weight, as will be clearly understood by
reference to the Figures, so that the rods H₁ will pass on opposite sides of the
shaft A.
The excentric is secured to the weight C by screws K, and a slot K¹ is made in the
excentric through which the shaft A passes.
When it is desired to run the engine in the reverse direction, the weights will be
changed end for end, and the position of the crank pin E and locking pin F will be
reversed.
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
A governor for steam engines consisting of a disc or plate keyed on the driving
axle, and having radial slides ways in which slide weights controlled by springs,
and connected in pairs, one weight carrying a crank pin or excentric in connection
with the slide valve of the steam engine, and operating by centrifugal force as set
forth.