Year: 1886

page_text: Date of Application, 28th July, 1886.
Complete Left, 27th Apr., 1887.
Complete Accepted, 12th July, 1887.
I WALTER ROWLAND HOLYOAKE, Gentleman of 3, Clifford's Inn, Fleet Street, in
the City of London, do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved apparatus for signalling from one part of
"a Railway Train" to another, and thus facilitating communication between guard
driver and passengers. Not only will the signal be given with facility and
certainty but all necessity of making any continuous connection by cords or
otherwise between the different carriages of which the Train is composed will be
obviated.
A vehicle fitted with my signalling apparatus which is complete in itself may
be introduced into any Train however different the signalling devices thereon may
be and the signal when once started is continued whilst the train is in motion until
the apparatus is re-set or re-adjusted.
In carrying my invention into practice I provide in a convenient position upon the
vehicle say for instance on the top of a passenger carriage a bell and hammer or
clapper. The hammer is capable of being set in motion by the rotation of a fan
connected therewith by any suitable means the hammer for instance may be acted
upon by a spring tending to keep it at a suitable distance from the bell. The
butt or stem of the hammer would in such case be provided with a tooth against
which the teeth of a ratchets wheel strike when the said wheel revolves. This
ratchet wheel is either fixed upon the spindle of a fan or is otherwise driven by
the latter. To ensure a steadier motion of the fan a fly wheel or a governor
may be fitted thereto.
The motion of the fan and consequently that of the bell-hammer is prevented by
a suitable catch which is so connected with the pull-button or other convenient
device in the interior of the carriage that when the button is actuated the catch
is withdrawn from the fan-gearing and if the train is then in motion the fan
will revolve and sound the bell until the train is stopped or until the catch is
re-set. In order to collect and direct the formed waves from the bell I may use
a tube extending forward and rearward from the bell and along the carriage.
It will readily be understood that the construction of my apparatus may be
considerably varied.
Do
T1000

page_text: COMPLETE SPECIFICATION.
Improved Apparatus for Signalling in Railway Trains.
I WALTER ROWLAND HOLYOAKE Gentleman of 3 Clifford's Inn, Fleet Street, in
the City of London, 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 :-
This Invention relates to an improved apparatus for signalling from one part of a
Railway Train to another and thus facilitating commfunication between Guard Driver
and Passenger not only will the signal be given with facility and certainty but all
necessity of making any continuous connection by cord or otherwise between different
carriages of which the train is composed will be obviated.
A vehicle fitted with my signalling apparatus which is completo in itself may be
introduced into any train however different the signalling devices thereon may be and
the signall when once started is continued whilst the Train is in motion until the
apparatus is reset or re-adjusted.
In carrying my invention into practice I provide in a convenient position upon the
vehicle, say for instance on the top and near the centre of a Railway Carriage a bell
and hammer or clapper. The hammer is capable of being set in motion by the
rotation of a fan or fans connected therewith by any suitable means. The hanımer
may for instance be acted upon by a spring tending to keep it at a suitable distance
from the bell. The butt or stem of the hammer would in such case be provided with
a tooth against which the teeth of a ratchet wheel strikes when the said wheel revolves.
This ratchet wheel is either placed upon the spindle of a fan or is otherwise drawn by
the latter or the butt or stem of the hammer may be operated by a cam.
To ensure a
steadier motion of the fan a flywheel or governor may be fitted thereto.
The motion of the fan and consequently that of the bell hammer is prevented by a
suitable catch which is connected with the pull button or other convenient device in
the interior of the carriage that when the button is actuated the catch is withdrawn
from the fan gearing and if the train is then in motion the fan will revolve and sound
the bell until the train is stopped or until the catch is reset.
In order to collect and direct the sound waves from the bell I may use a tube
extending forward and rearward from the bell and along the carriage.
The annexed drawings exhibit the mode of applying my invention which I adopt
Figures 12 and 3 are respectively a side elevation a plan of the roof and a portion of
a transverse section of a Railway carriage fitted with my signalling apparatus.
Figures 4 and 5 are respectively an end and side elevation of the signalling apparatus
drawn to an enlarged scale. Figures 6 and 7 are transverse sections on the lines A B
and CD respectively of figure 5 Fig. 8 is a sectional view in detail of a pull or
device and connecting gear or cord for setting the signalling apparatus free to move

page_text: and of a device and connecting gear or cord for again rendering the apparatus fixed
after the signal has been attended to a. a. are fans fixed on the shaft b supported on
bearings c. c. (preferably ball bearings as shewn) carried by the standards d d which
are fixed to the roof of the carriage or vehicle, f is a toothed wheel fixed on the
shaft b. g. is a tooth or projection carried by the rod which is pivotted at i.
When falls between two teeth of the wheel it holds the wheel and its axle bat
rest. The rod / may be further held in the locked position by the aid of a spring
not shewn is a cam fixed on the shaft b. k is a bell or gong secured to the roof of
the carriage. is a bell hammer carried by the spring arm m. of a bell crank lever
pivotted at n. o is the other arm of the same lever and is kept in contact with the
cam by the spring o¹. The arrangement for freeing the apparatus consists of a
rod p. with a knob or handle p¹ on it. The rod slides in a tube and is connected
with the rod h by a wire or cord suitably supported and guided by bell cranks or
rollers s. s. s. as shewn t is a wire or cord connected with the rod h. on the side
opposite to r and led by bell cranks or rollers u. u. u. to a convenient position outside
the Carriage is a catch lever which falls into a socket w in the rod p, when the
latter is drawn out and prevents the rod from being returned to its normal position
until the guard of the train has commenced to pull the wire or cord to replace the
pin g. in the wheel f. The knob p¹ in its locked position serves as an indicator to
show in which compartment of the carriage the signal was given. This catch lever is
mounted as shewn so that the first part of the return movement of the wire or cord r
produced by pulling the wire or cord t withdraws the catch lever from the socket in
the rod p. the further movement of the cord r drawing back the rod p. To enable the
initial movement to be given to the wire or cord r it is connected with a plate p² so
arranged as first to slide on a portion of the rod p. of less diameter than the other
part against the action of a spring p³. During the motion the plate p* lifts the catch
lever out of the socket w, it then catches the shoulder p on the reduced portion of
the rod p when the wire or cord the plate p³ and the rod p. will move together.
The wires or cords r. and t. may be enclosed in tubes for protection except where
the brackets or rollers are placed and if the pull or handle be placed in the side of the
Carriage instead of at the back of the compartment as shewn these wires or cords
may be throughout their length on the outside of the carriage. The operation of the
apparatus is as follows:-to call the attention of the guard or driver the rod Ρ is.
pulled out thereby drawing back the catch g. and freeing the axle b. If the train is
in motion the fan a. will cause the axle b to rotate and work the bell hammer by
means of the cam j. causing a succession of blows on the bell which will continue till
the train is brought to rest or the catch is replaced at the same time the plate p³ is
drawn forward setting the catch lever free to fall into the socket w. To replace the
catch g. and relock the apparatus the wire or cord t is pulled as hereinbefore stated.
In order to prevent the hammer from being jerked against the bell by the vibration
of the train without making the spring o¹ unnecessarily strong I attach to the rod h.
a bar (not shewn in the figures parallel to the axis b and sufficiently long to interfere
with the motion of the arm when the catch is in place. The position of the arm g.
at any moment may be such as by means of this bar to hold the catch g. free of the
wheelf but when pulling the wire or cord t. the guard will only have to continue the
pull during the period of a small number of revolutions of the fan to ensure that
the apparatus shall come to a position in which the catch g can fix the wheelf and
hold the arm o away from striking distance of the bell. The details of the apparatus
may be varied considerably for instance the hammer may be driven by the axle b by
any known method for converting rotary into reciprocating movement.
Having now particularly declared and ascertained the nature of my invention and
in what manner the same is to be performed, I declare that what I claim in signalling
apparatus for railway trains is-
1. The application of the pressure of the atmosphere on vanes or fans fixed to the
carriages of a train in motion to the purpose of signalling to the guard and driver of
the train by means independent of connection between the Carriages.

page_text: 2. The mechanism hereinbefore described in detail and shewn in the drawings
annexed in employing a motive power to produce an audible signal by striking a bell
or gong and for checking the action of the mechanism by a catch to be released by
the passenger.
3. The combination of the use as a motive power of the pressure of the atmosphere
on vanes or fans fixed to the carriages of a train in motion with the mechanism
hereinbefore described in detail and shewn in the figures annexed for producing
signals as aforesaid.