Improvements in Apparatus for Stopping any Water-wheel or other Motor used in Generating Electricity.
Year: 1891

page_text: Date of Application, 29th Jan., 1891
Complete Specification Left, 25th May, 1891-Accepted, 27th June, 1891
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Stopping any Water-wheel or other
Motor used in Generating Electricity.
1, WILLIAM SCOTT ELLIOT, of Teviot Lodge, Hawick,, in the County of
Roxburgh, Manufacturer, do hereby declare the nature of this invention to be as
follows:--
The object of this invention is to provide an improved arrangement for the
stopping of water-wheels or other motors used for the production of the electric
current, or for generating electricity, and this at any distance from such motors,
and without requiring any other wires for the purpose than the ordinary line
wires used for carrying such current, which current may be used for electric
light, for charging accumulators, for motive power, or for any other purpose for
which the current may be required. For this purpose I use a governor driven
from the main shaft, and which has a cam attached to the arms for carrying
the balls. This cam works on the centre or driving spindle of the governor and
moves up and down with the governor arms as the speed of the motor increases or
diminishes. When the speed is increased, the cam rises to a certain point where,
owing to its shape, it shifts a loose clutch to one side. This causes a central
horizontal shaft to revolve, and this again acting on a screw lowers the sluice or
closes the valve until there is sufficient water or steam shut off to bring the motor
to its normal speed. In the same way when the speed is too slow the cam sinks
down with the ball arms, moving the clutch in an opposite direction and causing the
horizontal shaft to revolve in the opposite direction and to open the sluice or valve
till the normal speed is attained when the cam is in such a position that the clutch
The idea is to
remains stationary between the two motions of screwing off and on.
raise the speed of the motors at any time and when the cam is up at the highest
point and screwing off water or steam or other fluid, to keep it there till the water
or steam is entirely shut off. I accomplish this in the following manner :-In order
to increase the speed of the motor I turn the switch or other arrangement for
breaking connection at the distant end where the current is being used, thus at once
taking the weight of work off the dynamo. The motor being relieved immediately
increases its speed and the governor cam as above described rises to the highest
point. At this point I make an iron arm or tongue working on a hinge or other-
wise to drop under the cam, effectually preventing the clutch from moving from the
position which it attained when at full speed, and compelling the governor to
continue to shut off water or steam till the motor comes to a stand. This is done
in the following manner:-The folding tongue or arm is held in position by a
suitable electro magnet, and this magnet is magnetized and de-magnetized in the
following manner: I cause the main current to pass through a relay wound with
suitable wire to carry that current; the moment the armature of the relay is pulled
down, a current which can be regulated by resistance, one ampere at 50 or 60 volts
being found sufficient to hold up the folding arm or tongue. The moment the
switch or other appliance for breaking the circuit is turned at the distant end, the
armature of the relay at once springs up, and the current to the electro magnet
which is holding up the arm or tongue is cut off, when the tongue or arm falls on
the side of the cam, and as soon as it rises the tongue or arm drops in below it,
keeping it in its place, and compelling the motor to screw off either water, or steam,
or other fluid till it comes to a stand.
בד
ليمه
L Tonna 1901
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Agents.

page_text: WOBIL DEAD STITTALION.
Improvements in Apparatus for Stopping any Water-wheel or other
Motor used in Generating Electricity.
1, WILLIAM SCOTT ELLIOT, of Teviot Lodge, Hawick, in the County of
Roxburgh, North Britain, Manufacturer, 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 my invention is to provide an improved arrangement for the
stopping of water wheels or other motors used for the production of the electric
current, or for generating electricity and this at any distance from such motors and
without requiring any other wires for the purpose than the ordinary line wires used
for carrying such current, which current may be used for electric light, for charging
accumulators, for motive power, or for any other purpose for which the current may
be required. For this purpose I use a governor driven from the main shaft, and
which has a cam attached to the arms for carrying the balls. This cam works on
the centre or driving spindle of the governor, and moves up and down with the
governor arms as the speed of the motor increases or diminishes. When the speed is
increased, the cam rises to a certain point, where, owing to its position on the driving
spindle, it shifts a loose clutch to one side. This causes a central horizontal shaft
to revolve, and this again acting on a screw lowers the sluice or closes the valve
until there is sufficient water or steam shut off to bring the motor to its normal
speed. In the same way when the speed is too slow the cam sinks down with the ball
arms, moving the clutch in an opposite direction and causing the horizontal shaft
to revolve in the opposite direction and to open the sluice or valve till the normal
speed is attained. When the normal speed is attained the cam is in such a position
that the clutch remains stationary between the two motions of screwing off and on.
The idea is to raise the speed of the motors at any time and when the cam is up
at the highest point and screwing off water or steam or other fluid, to keep it there
till the water or steam is entirely shut off. I accomplish this in the following
manner: In order to increase the speed of the motor I turn the switch, or other
arrangement for breaking connection, at the distant end where the current is
being used, thus at once taking the weight of work off the dynamo. The motor
being relieved immediately increases its speed, and the governor cam as above
described rises to the highest point. At this point I make an iron arm or tongue,
working on a hinge or otherwise, to drop under the cam, effectually preventing the
clutch from moving from the position which it attained when at full speed, and
compelling the governor to continue to shut off water or steam till the motor comes
to a stand. This is done in the following manner :-The folding tongue or arm is
held in position by a suitable electro magnet, and this magnet is magnetized and
de-magnetized in the following manner: cause the main current to pass through
a relay wound with suitable wire to carry that current. The moment the armature
of the relay is pulled down, a current which can be regulated by resistance,
one ampere at 50 or 60 volts being found sufficient, is caused to pass to an electro-
magaet the armature of which holds up the folding arm or tongue. The moment
the switch or other appliance for breaking the circuit is turned at the distant end,
the armature of the relay at once springs up, and the current to the electro-magnet
which is holding up the arm or tongue is cut off, when the tongue or arm falls
on the side of the cam, and as soon as it rises the tongue or arm drops in below it,
keeping it in its place and compelling the motor to screw off either water or steam
or other fluid till it comes to a stand.
In order that my invention may be properly understood and readily carried into
effect have hereunto appended four explanatory sheets of drawings in the several
figures of which corresponding parts are marked with the same letters of
reference.

page_text: Figure 1 is a front elevation of a governor operated by a water wheel through
bevel gearing.
Figure 2 is a side elevation.
Figure 3 is a horizontal section of Figure 2.
Figures 4, 5, 6, and 7 are detached views drawn to an enlarged scale.
A is the governor, and B the cam which works on the centre or driving spindle />
of the governor and moves up and down with the governor arms as the speed of
the motor increases or diminishes. As the speed of the motor increases the
governor arms rise, and with it the cam B, which when at a certain point comes in
contact with the projection N on the fork C. This turns the levers D, E, and
fork F, which fork is keyed on to the lever E-to one side, engaging the
clutch G, which clutch moves on a feather fixed in the shaft H, until it comes into
gear with the bevel-wheel R on that side. This causes the shaft H to revolve, and
it communicates with the sluice through a belt connecting the two pulleys, and
through the shafts I and J, and worm wheels K and L, thus lowering the sluice
or closing the valve until there is sufficient water or steam shut off to bring the
motor to its normal speed.
Again, when the speed of the motor is too slow, the cam B falls with the governor
arms, and when at a certain point it comes in contact with the projection M on the
fork C, thus turning the levers D E, and fork F in an opposite direction to that
hereinbefore described, and moving the clutch G until it gears with another bevel
wheel S, which causes the horizontal shaft H to revolve in the opposite direction
to that described, and so open the sluice or valve till the normal speed is attained.
When the motor is at its normal speed the cam runs between the projections N
and M on the fork C, and the clutch G remains stationary between the bevel-
wheels R and S. These bevel-wheels R and S receive motion from a bevel-
pinion T keyed on to the governor spindle b.
In order to increase the speed of the motor at any time, and to retain the cam B
in its highest position so as to entirely cut off the water or steam, I turn the
switch, or other arrangement for breaking the circuit, at the distant end where the
current is being used, thus at once taking the weight of work off the dynamo.
The motor being relieved, immediately increases its speed, and the cam B rises to
its highest point, as hereinbefore described. The current being cut off, the
armature a of the relay S' at once springs up and stops the current to the electro-
nagnet V and releases its arniature. This armature is attached to an arm U which
is pivoted to a strap connected to the sleeve u surrounding the spindle b. While
the electro-magnet is excited by the current, and its armature attracted, the
arm U is pulled away from the cam B; but when the armature is released, the
arm U is free to fall against the cam, and when the speed of the governor is suffi-
cient to cause the cam to rise high enough, U will drop under the cam, and prevent
it coming down again. The clutch G is thus kept locked with the bevel-wheel R,
which continues turning until the water or steam is entirely cut off and the motor
stopped.
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 apparatus for stopping any water wheel or other motor used in generating
electricity, substantially as described and shown on the accompanying sheets of
drawings.
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Agents.