APPARATUS FOR DRIVING REGULATING AND INDICATING SPEED OF DYNAMO MACHINES USED FOR LIGHTING PURPOSES SPECIALLY APPLICABLE FOR RAILWAY VEHICLES ON OR TO WHICH DYNAMOS CAN BE AFFIXED FOR PRODUCING THE CURRENT BY THE MOTION THEREOF
Year: 1882

page_text: LETTERS PATENT to John Banting Rogers of 47 Holborn Viaduct in the
City of London Engineer for an invention of APPARATUS FOR DRIVING
REGULATING AND INDICATING SPEED OF DYNAMO MACHINES USED FOR
LIGHTING PURPOSES SPECIALLY APPLICABLE FOR RAILWAY VEHICLES ON OR
TO WHICH DYNAMOS CAN BE AFFIXED FOR PRODUCING THE CURRENT BY THE
MOTION THEREOF
PROVISIONAL SPECIFICATION left by the said John Banting Rogers at
the Office of the Commissioners of Patents on the 22nd March 1882.
JOHN BANTING ROGERS of 47 Holborn Viaduct in the City of London
Engineer APPARATUS FOR DRIVING REGULATING AND INDICATING SPEED OF
DYNAMO MACHINES USED FOR LIGHTING PURPOSES SPECIALLY APPLICABLE FOR
RAILWAY VEHICLES ON OR TO WHICH DYNAMOS CAN BE AFFIXED FOR PRODUCING
THE CURRENT BY THE MOTION THEREOF
This invention relates, first, to a certain arrangement of apparatus by which the
rotation of the wheels or axles or one of them only of a railway vehicle can be
utilized for driving one or more dynamo machines titted thereon the dynamo being
regulated by the apparatus and maintained at an uniform speed whether the
vehicle be moving at a fast or a slow rate of travel the apparatus being more or
less under control of an attendant who travels with it. The apparatus is provided
with reversing gear to suit for running with either end of the carriage in
front.
The invention relates secondly to a speed travelling indicating apparatus to be
used in connection with the above mentioned driving and speed regulating
apparatus or alone if found desirable or with other mechanism whether of a
travelling or other kind and whether accumulators or secondary batteries be used
in conjunction or not
According to the first part of my invention I affix a supplementary wheel to'
one of the axles of a railway vehicle and by a belt thereon I give motion to a

page_text: pulley on the axle of a cone drum from which by another cone drum set in an
opposite position and a belt I drive a dynamo machine through the intermediation
of a shaft fitted, free to rotate in conjunction therewith.
The belt of the cone drums works in a fork of a sliding apparatus under the
control of a threaded rod arranged between the drums which rod can be turned by
hand or act automatically to set the belt at any part of the drums.
The sliding apparatus has a finger moving along a scale marked on a transverse
strip which indicates the position the belt should be set according to the speed at
which the vehicle may be moving this being known more or less by the attendant
after a little practice from various causes.
I fit a balance weight on a short axle to keep a wheel in contact with the first
mentioned belt to take up any slack that may occur from the motion of the vehicle
such as when passing points etc and I provide said short axle with a hand lever
and rods so that the wheel can be thrown into closer contact or out of contact when
desired.
According to the second part of my invention I rotate a vertical spindle by strap
or otherwise from one of the drums referred to in the foregoing description said
spindle is hollow and is surmounted by a cap from which two arms project at right
angles. These arms carry weights connected by chains to a cross bar which is free
to rise within slots formed in the spindle or a collar working thereon from the
throwing out of the weights under centrifugal force and fall under the action of a
spring encircling the spindle. The cross bar or the collar carries a rack into which
a pinion on the back of a dial plate gears, so that the finger on the dial may
indicate according to special markings thereon the rate of the travelling speed, thus
placing, the dynamo speed under the control of any person. All the parts of the
mechanism are proportionately arranged relatively from the diameter of the first
wheel from which the motion is obtained.
When the apparatus above set forth is fitted to a railway vehicle for electrically
lighting up a train I purpose using one or more secondary. batteries or current
accumulators to maintain the light during short stoppages at stations or
otherwise.
The indicator can be used alone for indicating and registering the varying speeds
of a train or other moving body or bodies.
The apparatus may if desired be driven by a small engine on the vehicle or
otherwise.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Banting Rogers in the Great Seal Patent Office on the
22nd September 1882.
JOHN BANTING ROGERS of 47 Holborn Viaduct, in the City of London
Engineer APPARATUS FOR DRIVING REGULATING AND INDICATING SPEED OF
DYNAMO MACHINES USED FOR LIGHTING PURPOSES SPECIALLY APPLICABLE FOR.
RAILWAY VEHICLES ON OR TO WHICH DYNAMOS CAN BE AFFIXED FOR PRODUCING
THE CURRENT BY THE MOTION THEREOF
This Invention relates First, to a certain arrangement of apparatus by which the .
rotation of the wheels or axles or one of them only of a railway vehicle can be
utilized for driving one or more dynamos machines fitted thereon, the dynamo being
regulated by the apparatus and maintained at an uniform speed whether the vehicle
be moving at a fast or at a slow rate of travel. The apparatus is more or less
under control of an attendant, who travels with it. The apparatus is provided
with reversing gear to suit for running with either end of the carriage in
front.
The Invention relates Secondly; to speed travelling indicating apparatus to be
used in connection with the above mentioned driving and speed regulating
apparatus or alone if found desirable, or with other mechanism whether of a
travelling or other kind, and whether accumulators or secendary batteries be used
in conjunction or not.
According to the First part of my Invention I affix a supplementary wheel to
one of the axles of a railway vehicle and by a belt thereon I give motion to a
pulley on the axle of a cone drum, from which by another cone drum set in an
opposite position and a belt I drive a dynamo machine through the intermediation
of a shaft fitted free to rotate in conjunction therewith. The belt of the cone
drums works in a fork of a sliding apparatus under the control of a threaded rod
arranged between the drums which rod can be turned by hand or act automatically
to set the belt at any part of the drum.
The sliding apparatus has a finger moving along a scale marked on a transverse
strip which indicates the position the belt should be set according to the speed at
which the vehicle may be moving tbis being known more or less by the attendant
after a little practice from various causes.
I fit a balance weight on a short axle to keep a wheel in contact with the first
mentioned belt to take up any slack that may occur from the motion of the
vehicle as when passing points etc, and I provide said short axle with a hand
lever and rods so that the wheel can, be thrown into closer contact or out of contact
when desired.
On the axle A of the carriage wheel B is fixed a drum C which by means of the
strap or belt D transmits motion to the pulley E which revolves on the shaft or
spindle F, the belt or compensating drum G which is fixed to the shaft or spindle F
of the belt or strap H transmits motion from G to the other compensating drum I
and on the spindle K of this drum a pulley or rigger is placed which by the band
or strap guided by friction rollers gives motion to the pulley M of the dynamo
machine N.
The strap H is made to traverse from end to end of the compensating drums G
and I by the guide O which travels in the slide P and is operated by the screw Q
working in a nut or boss in the guide O, by its handle R. The strap or belt D is
kept tight by means of the weight S which holds the roller T steadily against it
and allows the rise and fall of the carriage to take place without rendering the

page_text: strap too slack or too tight, thus compensating for the ever varying distance
between the body of the carriage and its axle.
The action of the weight S is controlled by the handle U which is connected
with it by the levers W W and the rod X.
An index or scale Y on the outside of the slide bed defines by the pointer Z
the required position of the strap H to procure the necessary motion of the
dynamo.
The foregoing description refers to the Figures 1, 2 and 3; the following to
Figures 4, 5, 6, and 7.
The pulley E, see Figures 1, 2 and 3, which revolves on its shaft F is here
produced on a larger scale; to the spindle F is fixed a boss a on which are hinged
two pawls bbwhich drop into the ratchets c c c with which the inner side of the
pulley E is armed, hence when the pulley is moved in the direction of the arrow
the pawls are engaged, but when the motion of the pulley is reversed they are
disengaged.
On the outer edge of the pulley E a mitre d is attached, this gears into the loose
wheel e which in its turn works the mitre wheelf which runs loose on the spindle
F that is also furuished with a boss and pawls operating as before in the ratchets
ccc placed inside fas in d hence when the pulley E with its mitre wheel d moves
in the direction of the arrow the mitre wheel f moves in a contrary direction, the
pawls being disengaged, and when the pulley E is reversed in its motion by the
train going backwards the mitre wheel through the action of the loose wheel e
moves in the direction of the arrow which is the direction required for the dynamo
machine, the pawls in this case being engaged. The loose wheel e moves freely on
its spindle g which is held by the bracket h fixed to the frame of the apparatus.
X' is a switch arranged between the dynainos and the storage batteries to break
connection when the train is at rest.
According to the Second part of my Invention, I rotate a vertical spindle by
strap or otherwise from one of the drums referred to in the foregoing description,
said spindle is hollow and is surmounted by a cap from which two arms project at
right angles these arins carry weights connected by chains to a cross bar which is
free to rise within slots formed in the spindle or a collar working thereon from the
throwing out of the weights under centrifugal force, and fall under the action of a
spring encircling the spindle; the cross bar or the collar carries a rack into which
a pinion on the back of a dial plate gears, so that the finger on the dial may
indicate according to special markings thereon the rate of the travelling speed thus
placing the dynamo speed under the control of, any person.
All the parts of mechanism are proportionately arranged relatively from the
diameter of the first wheel from which the motion is obtained.
When the apparatus above set forth is fitted to a railway vehicle for electrically
lighting up a train I propose using one or more storage batteries to maintain the
light during stoppages at stations or otherwise.
The indicator can be used alone for indicating and registering the varying
speeds of a train or other moving body or bodies.
In the accompanying drawing Figure 8 is a front view of the indicator,
Figure 9 a vertical section, Figure 10 a plan, Figure 11 a plan of the index gear.
The pulley A fixed on the hollow spindle B which moves in bearings C C
receives motion from the shaft of the driving apparatus; a box or cap D is screwed
onto the upper end of B and receives the arms E E on which weights F F can
freely slide; these weights by means of chains G G and the rod I are connected
with the collar K by a pin L which passes through the rod I the spindle B up and
down which it moves in the groove M and the collar K. Working in the collar K
is a forked traveller N which projecting at the back passes through the back or bed
plate W and works in the groove O which is made therein for the purpose; on this
projection N is fixed a rack P which operates the pinion Q on whose spindle is
fixed the hand T which points to the figures on the dial S attached to the back. W
by the studs X X. The spiral spring V which is placed around the spindle B

page_text: between the collar Y and the movable collar K serves to keep them apart and so
holds the weights F F against the box D and through the action of the rack and
pinion to keep the hand at zero on the dial.
The operation of the indicator is as follows;-
When in a state of rest the weights are both home and the hand stands at zero ;
as motion is given to the spindle the weights have a tendency to fly off to the
extremity of the arms but being held back by the action of the spiral spring they
can only do so to such an extent as the velocity at which they are moving
compresses the spring, bence as the velocity varies, so does the circle in which the
weights are gyrating, so does the movable collar rise up and down the spindle, and
so does the hand point to the figures on the dial which indicate the speed required
to be made known.
Having now described the nature of my said Invention and in what manner the
same is to be performed I declare that I claim ;-
First: The particular arrangement of apparatus applicable or to a railway
vehicle for giving motion from the running axle thereof and working dynamo
electric machines thereby; said apparatus being capable of speed variations in the
manner and by the means set forth and as shown in the annexed Sheet 1 of
drawings, Figure 1, 2 and 3.
Secondly I claim; The particular apparatus or arrangement of mechanism shown
on sheet 2 of the annexed drawings for regulating and indicating the speed of the
first named apparatus or any other equivalent apparatus whereby the speed of
rotation of a dynamo is or may be kept uniform without regard to the travelling
speed of a train, as herein set forth.
Thirdly I claim: The combination or connection of the two apparatus shewn on
sheets 1 and 2 of the annexed drawings for driving regulating and indicating the
speed of dynamo machines for evolving electric currents to be utilized from
dynamo machines direct or through storage from which the current can be used
when the train is at rest as set forth.
In witness whereof I the said John Banting Rogers have hereunto set my
hand and seal this Twenty first day of September in the year of our Lord,
One thousand eight hundred and eighty two.
Witness
H, GARDNER
Patent Agent
166 Fleet Str
London.
JOHN BANTING ROGERS. (L.S.)