Year: 1886

page_text: 1886
Date of Application, 3rd Dec,
Complete Left, 30th Aug., 1887.
Complete Accepted, 7th Oct., 1887.
We, FREDERICK DAWKIN BOWLES of 363 Kennington Road in the County of
Surrey, Engineer and JOHN PRICE of 95 Upper Richmond Road, Putney in the
County of Surrey, Gentleman do hereby declare the nature of this invention to be as
follows:-
25
Our invention relates to signalling apparatus for railways, more particularly
applicable when fog occurs, wherein the rod that actuates the ordinary semaphore
signal is also made to work a stop or other device by the side of the rail so that on
the engine of a train passing such stop, this is made to actuate a lever or arm on the
engine so as to sound either the whistle or a gong on the engine. According to our
present improvements we so construct such apparatus that by means thereof three
distinct signals can be given on the engine, namely a single signal signifying "line
clear," or two signals in succession signifying "caution," or three signals in succession
signifying "danger or "stop," these signals being produced by the motion of one
and the same signal rod as this is moved to bring the semaphore or lamp signal to the
"line clear" "caution" and " stop" positions. For this purpose we connect the
signal rod to three slides at such distances apart as may be required for giving dis-
tinctly separate sounds when the engine is moving at a considerable speed, each of
which slides is formed with a cam groove or incline that acts either directly or through
the intervention of rods or levers upon a stop or stud which, by such action, is made
to protrude in a path of a lever or arm on the lower end of a spindle on a passing
engine, the upper end of which spindle is connected either to the whistle or to a gong,
so that on passing the stop the spindle will be turned thereby so as to sound the
whistle or gong, after which the spindle will be brought back to its original position
by a weight or spring. The cam grooves or inclines on the slides are so arranged
relatively to each other, that on the signal rod being moved to bring the semaphore
signal into the "line clear" position, only the one slide will have been moved suffi-
ciently to bring its stop into the raised position, so that only a single signal will be
given on a passing engine; on moving the rod farther so as to bring the semaphore
to the "caution" position, the second slide will also have been brought into position

page_text: for raising its stop, so that two successive signals will be given on the engine, and
when the signal rod is moved still farther, the third slide will also be brought into
position for raising its stop, whereupon three successive signals will be given.
We also employ in combination with this arrangement a bell or gong on the sema-
phore signal post or other support in proximity thereto, which is sounded by the
signal rod when this is moved to bring the semaphore from the "stop" to the "line
clear" position, in order to indicate the fact to the driver of the adjacent stationary
engine, who will thereby know that he can start again.
It will be evident that the above described invention may also be applied where
only two signals are required to be given, namely a single signal for "caution" and
two signals for " "stop."
The arrangement of the mechanism for actuating the stops or studs by means of
the signal rod may be variously modified, thus the three slides, or a single slide having
three cam grooves or inclines for actuating the three stops, may be connected directly
to the signal rod, and be made to actuate the stops through suitable rods or levers,
or the slide or slides may be situated close against the rails so as to actuate the stops
directly, and they may in that case be actuated by the signal rod through suitable
rods, chains or levers. The stops may either be made to turn on pivots from the
lowered to the raised position, or they may be made to slide vertically in guides.
We also provide moveable stops carried by the signal men or flag men, and
capable of being secured to one of the rails by a screw clamp so as to sound the
signal on a passing engine at any desired point, and with such stop may be com-
bined a socket in which the flag man introduces his flag, so that the engine driver
will receive both an audible and a visible signal.
Dated this 3rd day of December 1886.
ABEL & IMRAY,
Agents for the Applicants..

page_text: COMPLETE SPECIFICATION.
Improvements in Signalling Apparatus for Railways.
We, FREDERICK DAWKIN BOWLES of 363 Kennington Road in the County of
Surrey, Engineer and JOHN PRICE of 95 Upper Richmond Road, Putney in the
County of Surrey Gentleman 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:-
Our invention relates to signalling apparatus for railways, more particularly
applicable when fog occurs, wherein the rod that actuates the ordinary semaphore
signal is also made to work a stop or other device by the side of the rail so that on
the engine of a train passing such stop, this is made to actuate a lever or arm on
the engine so as to sound either the whistle or a gong on the engine.
According to our present improvements we so construct such apparatus that by
means thereof two or more distinct signals can be given on the engine, namely a
single signal signifying "caution" or two signals in succession signifying "danger
or stop," these signals being produced by the motion of one and the same signal rod
as this is moved to bring the semaphore or lamp signal to the "caution" and*** stop
positions.
22
For this purpose we connect the signal rod to two slides at such distances apart as
may be required for giving distinctly separate sounds when the engine is moving at a
considerable speed, each of which slides is formed with a cam groove or incline that
acts either directly or through the intervention of rods or levers upon a stop or stud
which, by such action, is made to protrude in the path of a lever or arm on the lower
end of a spindle on a passing engine, the upper end of which spindle is connected
either to the whistle or to a gong, so that on passing the stop the spindle will be
turned thereby so as to sound the whistle or gong after which the spindle will be
brought back to its original position by a weight or spring. The cam grooves or
inclines on the slides are so arranged relatively to each other that on the signal rod
being moved to bring the semaphore signal into the "caution" position only the one
slide will have been moved sufficiently to bring its stop into the raised position, so
that only a single signal will be given on a passing engine; on moving the rod farther
so as to bring the semaphore to the " stop" position, the second slide will also have
been brought into position for raising its stop, so that two successive signals will be
given on the engine.
We also employ in combination with this arrangement a bell or gong on the sea-
phore signal post or other support in proximity thereto, which is sounded by the
signal rod when this is moved to bring the semaphore from the "stop" to the line
clear position in order to indicate the fact to the driver of the adjacent stationary
engine, who will thereby know that he can start again.
きき
It will be evident that the above described invention may also be applied where
three signals are required to be given, namely a single signal for "line clear" two
signals for caution and three signals for "stop."

page_text: The arrangement of the mechanism for actuating the stops or studs by means of the
signal rod may be variously modified thus the two or more slides or a single slide
having two or more cam grooves or inclines for actuating the stops may be connected
directly to the signal rod, and be made to actuate the stops through suitable rods or
levers, or the slide or slides may be situated close against the rails so as to actuate the
stops directly and they may in that case be actuated by the signal rod through suitable
rods chains or levers."
The stops may either be made to turn on pivots from the lowered to the raised
position or they may be made to slide vertically in guides.
We also provide moveable stops carried by the signal men or flag men, and capable
of being secured to one of the rails by a screw clamp so as to sound the signal on a
passing engine at any desired point, and with such stop may be combined a socket in
which the flag man introduces his flag, so that the engine driver shall receive both an
audible and a visible signal.
Fig. 1 of the accompanying drawings shews an elevation of one arrangement of our
above described signalling apparatus, adapted to give two signals on the passing
engine, one when the semaphore is at "caution and the second when it is at
<<
danger," the position of the parts here shewn being that, when the semaphore stands
at "line clear and consequently no signal is given.
32
Fig. 2 shews a plan Fig. 3 shews the same parts with the semaphore moved to
"caution" and the apparatus moved so as to give one signal on the engine, and
Fig.
shews the seinaphore at stop and the apparatus moved so as to give
Fig. 5 shews a side view of the engine with the necessary appliances for giving the
signal.
two signals.
A is a plate, capable of sliding to and fro in guides B and having formed in them
two slots a a¹ through which pass the cranked ends of bars C₁ the other ends of
which are pivotted to the guides B.
The slot a has a horizontal upper part and an inclined part, while the slot a' has in
addition a lower horizontal part. The plate A is connected by a rod to a lever I)
which is also connected by a rod near its fulcrum to the lever E on the semaphore
post, so that the comparatively small motion imparted to the lever E for raising or
lowering the semaphore F causes a proportionately greater motion in one direction or
the other to be imparted to the plate A. The position of the plate A is so adjusted
relatively to that of the semaphore arm that when this is at "line clear" as at Fig. 1
the end of the bar C is situated at the lower end of the incline of its slot, and the end
of the bar is situated at the end of the lower horizontal part of its slot, so that the
small rollers c c¹ mounted on the projecting ends of the bars are in a lowered position,
such that when the engine G passes them, the lower end of the elbow lever H fixed
on the framing thereof passes clear over the rollers, and no signal is given on the
engine.
When on the other hand the semaphore is moved into the caution position as at
Fig. 3 the plate A will also be moved in the direction of the arrow to such an extent
as to bring the end of the bar with its roller c to the upper end of the incline of the
slot while the end of the bar with its roller c will have been brought to the end
of the lower horizontal part of the slot a next the incline. The parts being in this
position it will be seen that when the engine passes the apparatus the lever H will
come in contact with the raised roller e and being moved thereby will cause a signal
bell I on the engine to be sounded by means of the rods and levers H H connecting H
with the bell. The roller c¹ being still in the lowered position the lever H will not
be actuated thereby as it passes over it.
с
If now the semaphore is raised to the "danger" position as at Fig. 4 the plate A
will be moved still further in the direction of the arrow, thereby bringing the end of
the bar to the end of the horizontal part of its slot a the roller e being consequently
still in the raised position while the end of the bar with its roller c¹ will also be
brought into the raised position at the top of the incline of slot a'.

page_text: Thus on the engine passing the lever the signal bell will be actuated first by
roller and a second time by roller c'. It will be readily seen that if it were desired
to give a signal also when the semaphore is at line clear, this may be effected by
forming the plate a with a third slot acting upon a third cranked bar, the three slots
being in that case so arranged that for "line clear "the one slot raises its bar so as to
give a signal for "caution" two slots raise their bars; and for "danger" all three
slots raise their bars. A plate with a single slot and bar may also be used for cases
where it is only desired to give a signal when the semaphore is at "danger."
In order to prevent the signal bell of the engine from being actuated by the raised
rollers when the engine is running back on the line the connection of the lever H
with the gear His slotted, as shewn, so that on passing over the rollers the lever will
be moved without actuating the other part of the striking gear.
The engine is provided with a second lever and striking gear at its other end on
the opposite side, as shewn, so as to actuate the signal bell when the engine is running
on the other line without being turned round.
Fig. 6 shews a modified arrangement for giving a single signal when the semaphore
stands at danger, in which in place of a sliding plate, a lever K is used, pivotted to a
fixed bracket at its lower end and carrying a roller at its upper end, this lever being
connected to the semaphore lever E by a rod in such manner that it is held in vertical
position with the roller projecting in the path of the lever on the engine when the
semaphore is at "danger" as shewn while when the semaphore is lowered to the "line
clear position the lever K is brought into the dotted position in which its roller is
lowered out of the path of the engine lever. The rod connecting the lever K with
the semaphore may be disconnected therefrom in clear weather, so as only to give the
audible signal in foggy weather and in like manner the sliding plate A of the previous
arrangement can be disconnected from the semaphore when not required to act.
::
Fig. 7 shews the above described moveable stop, to be secured to the rail at any
desired point consisting of a screw clamp having a projecting arm with roller L for
actuating the signalling lever on the engine as described and a socket M. for the
insertion of the signal Hag. The arm is made with a hinge joint at N so that it can
be turned down out of the reach of the engine lever when not required to act upon
this.
Although we have only shewn one arrangement on the drawing by way of example
for giving two or more successive audible signals according to our invention it will be
evident from what we have before stated that various other arrangements operating in
a similar manner may be adopted.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed we declare that what we claim is
1. The use of signalling apparatus for railways wherein two or more stops, studs or
rollers situated at the side of the line are so arranged in combination with a semaphore
signal, that according as the latter is moved into different positions one or more of
the said stops are moved so as to actuate an audible signal on a passing engine in such
manner as to give a different number of signals according to the different positions
into which the semaphore is moved, substantially as and for the purpose herein
described.
2. In signalling apparatus such as is referred to in the preceding claim, arranging
the stops, studs or rollers to be actuated by inclines or cam grooves in connection
with each other and with a semaphore signal in such manner that when the one incline
or cam groove has been made to raise its stop so as to actuate the signal on the engine
the next incline or cam groove is so situated that it will only raise its stop on the
further movement of the first incline or cam groove which during such motion keeps
its stop in the raised position, substantially as herein described.
3. The use in combination with signalling apparatus such as is referred to in
the preceding claims, of a signal boll on the engine actuated by means of a lever
baring a slotted connection so that the bell is acted upon by the stops studs or rollers

page_text: on the permanent way when the engine is running in one direction, but when the
engine runs in the contrary direction the lever is moved by the stops without
actuating the signal bell substantially as herein described.
4. The use for signalling on railways of a portable signalling apparatus that can be
secured to the rails at any desired point and is provided firstly with an arm-having
a stop or roller for acting upon a signal bell on the engine such as is referred to in
the preceding claim and secondly a socket for the insertion of a hand signalling flag
the said arm to be formed with a hinge joint enabling it to be turned down substan-
tially as herein described.
Dated th: onth
10 A
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