Improvements in Controming away Application of Electricity.
Year: 1888

page_text: Date of Application, 23rd Jan., 1888
Complete Specification Left, 22nd Oct., 1888
Complete Specification Accepted, 23rd Nov., 1888
Improvements in Controming
away
Application of Electricity.
WILLIAM FREDERICK BURLEIGH 106 Camberwell New Road London S.E. Engineer
do hereby declare the nature of this invention to be as follows :-
My invention consists of a means of enforcing that all the necessary points lie in
their proper position and such as are required are bolt locked in that position before
a signal can be lowered for a traffic movement, so that by this means it ensures that a
signal cannot be given unless all points that require to be passed over are set and bolt
locked in their proper position and such points as lead to the route set for the signal
and would cause a collision lie in their proper position to prevent such. If any of the
rods working the points or facing point locks should break and the points or facing
point locks not be in their proper position the signal cannot be lowered.
The novel feature of my invention consists in providing a circuit embracing a
battery, Electro-Magnet lock on Signal lever, a contact at the necessary points, a
contact at the Facing point locks, a contact at the catch handle of the signal lover or
its equivalent, and in some cases an 'indicator.
This I carry out as follows, at all the points required either facing or trailing in any
convenient place either on the sleeper outside the rail or fixed inside between the rails
I fix a contact maker and connect it to the points in such a manner that when the
points lie in the proper position for the traffic movement the contact is made.
I also fix a smilar contact maker to each of the facing point locks and actuate it from
any convenient part or parts of the facing point lock but preferably by the plunger or
by the locking bar or both this I arrange so that when the points are bolt locked by
the facing point lock contact is made. To the signal lever in the locking apparatus I
attach a lock actuated by an Electro-Magnet and arranged so that when the circuit is
complete the lock is taken off and the signal free to be lowered. If by any cause the
circuit becomes broken the lock remains on.

page_text: I also provide a contact actuated by the catch handle of the Signal ever in
the locking apparatus and arranged so that only when the catch handle is raised
contact made.
In cases where there are no points to form a trap for a traffic movement and only
a signal prevents another traffic movement from colliding I attach a contact to such
signal so that it must remain at danger to complete the circuit.
Dated this 23rd day of January 1888.
Application of Electricity.
WILLIAM FREDERICK BURLEIGH 106 Camberwell New Road London S.E. 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:
My invention consists of a means of enforcing that all the necessary points lie in
their proper position and such as are required are bolt locked in that position before a
signal can be lowered for a traffic moveinent, so that by this means it ensures that a
signal cannot be given unless all points that require to be passed over are set and bolt
locked in their proper position and such points as lead to the route set for the signal
and would cause a collision lie in their proper position to prevent such.
If any
of the rods working the points or facing point locks should break and the points
or facing point locks not be in their proper position the signal cannot be
lowered.
The novel feature of my invention consists in providing a circuit embracing a
battery, Electro-Magnet lock on signal lever, a contact at the necessary points, a
contact at the facing point locks, a contact at the catch handle of the signal lever or
its equivalent, and in some cases an indicator.
This I carry out as follows, at all the points required either facing or trailing in any
convenient place either on the sleeper outside the rail or fixed inside between the rails
I fix a contact maker and connect it to the points in such a manner that when the
points lie in the proper position for the traffic inovement the contact is made.
I also fix a similar contact maker to each of the facing point locks and actuate it
from any convenient part or parts of the facing point lock but preferably by the
plunger or by the locking bar or both this I arrange so that when the points are bolt

page_text: locked by the facing point lock contact is made. To the Signal lever in the locking
apparatus I attach a lock actuated by an Electro-Magnet and arranged so that when
the circuit is complete the lock is taken off and the signal free to be lowered. If by
any cause the circuit becomes broken the lock remains on.
I also provide a contact actuated by the catch handle of the signal lever in the
locking apparatus and arranged so that only when the catch handle is raised is
contact made.
In cases where there are no points to form a trap for a traffic movement and
only a signal prevents another traffic movement from colliding I attach a contact
to such signal so that it must remain at danger to complete the circuit.
DESCRIPTION OF DRAWINGS.
Fig. 1 is a diagram of a simple junction showing the signal 8 lowered for a traffic
movement the points 9 having first been set and bolt locked by the facing point
lock 10 in the proper position to close a break in the circuit at the facing point lock,
the points 11 left in the position shown or set in that position as required to form a
trap and close a break in the circuit at points 11, the conflicting signals 12, 13 standing
at danger to close breaks in the circuit at the conflicting signals, the necessary contacts
outside the cabin now being made, raising the catch handie of the lever in the lever
locking apparatus in the cabin that works the signal 8 makes the final contact and so
completes the electric circuit taking off the lock on the signal lever enabling it to be
worked and so lower the signal 8.
The number of breaks in the electric circuit or contacts to be made will necessarily
vary to suit the different arrangements of points and signals &c. at the various junctions
& stations where used.
Fig. 2 is a side elevation of the Electro-Magnet lock on signal lever and Fig 3 a
part plan of same. 14 is a crank pivoted on a fixed frame or support at 15 and
weighted so that one end rests against a fixed stop 16 so shaped as to receive the
strain of the lock and lessen the strain on the spindle of the crank where pivoted,
17 is an Electro-Magnet, 18 an armature pivoted at 19 to which is fixed a bar 20,
21 a small connecting rod from bar 20 to weighted crank 14, 22 a contact actuated
by the catch handle 23 by means of the weighted lover 24 and catch rod 25 of
the signal lever 26.
When all the outdoor contacts aro made at the necessary points facing point
locks signals &c. the action of partly raising the catch handle 23 makes contact
at 22 and so completes the Electric circuit causing the magnet 17 to attract the
armature 18 which gives motion to bar 20 and small connecting rod 21 so moving
the end of the weighted crank 14 away from the fixed stop 16 clear of the lever 24
enabling the catch handle 23 to be raised to its full extent and so free lever 26. If
all the necessary contacts are not made or the battery fail from any cause the end of
the weighted. fever 14 rests against the fixed stop. 16 and will only allow the
catch handle 23 to be partly raised but not sufficient to release the lever 26. The
break in the circuit at 22 is to economize the battery power and if required an
additional break may be added at the over position of the lover,26 to further
economize the use of the battery.
When locked the arm or lever 24 answers the double purpose of reducing the strain
on crank 14 and giving increased draught for making contact at 22.
The Electro-magnet lock can be fixed higher or lower on the lever 26 as
desired.
Fig. 4 shows a section of a contact maker (fixed at points 11 Fig. 1) 27 is a connect-
ing rod from points 11 which when in the position shown in Fig. I would have moved
the arm 28 over so as to cause spring 29 which is fixed to it to make contact with
adjusting screw 30.
Fig. 5 is a section and Fig. 6 a plan with cover removed of a contact maker
(at points 9 and facing point lock 10 Fig. 1) 31 being the ordinary plunger casting of
the facing point lock, 32 the plunger, 33 split stretcher bar, 34 tie plate, 35, 36 sleepers,

page_text: 37 box; 38 cover for same, 39 weighted arm pivoted at 40, 41 spring fixed to arm 39,
42 hole in box for plunger 32 to pass through after bolt locking the points and give
motion to weighted arm 39 which moves so as to cause spring 41 to mako contact
with adjusting screw 43 or 44 according to the position of the points, 45 a stretcher
bar or force rod to which adjusting screws 43 44 are attached.
To make the necessary contact at points 9 and facing point lock 10 for unlocking
signal 8, the force rod 45 fixed to the points will have to be moved over so that on
working the facing point lock plunger 32 it will pass through the slotted holes 46 in
the split or divided stretcher bar 33 and cause the spring 41 to make contact with
adjusting screw 44.
Fig. 7 is a section of a mercurial form of contact maker 47 being a box, 48 a cover,
49 a weighted arm centred at 52 on the lug 50 of force rod 51 the said force rod
being fixed to the points in any well known manner, the weighted arm 49 is fitted
with a vessel 53 containing mercury and arranged to make a contact on being
tilted by the plunger of the facing point lock entering hole 54 after it has bolt locked
the points.
I do not confine myself exclusively to the exact form of contact makers shown or to
what part or parts of the points and facing point lock they are connected to. The
contacts at the signal or signals can be either at the arm or both at the arm
and lamp and of any well known form such as used in connection with the ordinary
electric repeaters.
I am aware of the existence of various forms of electro-magnet locks in use between
the lever locking apparatus and the block instruments but this invention has no reference
whatever to the block signalling instruments being simply an Electric detector and is
designed with a view to prevent the pulling over of a signal or other lever unless the
road is properly set, bolt locked and tapped together with the conflicting signals at
danger and is for detecting any failure of the out door connections, cranks rods wires
&c. and ensure they have done the work intended before a signal can be lowered for
a traffic movement.
It would also be used where required to detect in addition to the above the proper
position for a traffic movement of crossing gates, Swing Bridges, turntables, traversers,
Route locking apparatus, clearance bars &c. by adding a break in the electric circuit
at each so that they must be in their proper position to form a contact to complete
the circuit.
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:
1. In connection with Electro-Magnet lock at signal lever, the combination of a
contact or contacts at the points, facing point lock, catch handle and conflicting signals
substantially as described and for the purpose specified.
2 Electro-Magnet lock substantially as described with reference to Figs. 2 & 3.
3. The contact apparatus (worked by some part or parts of the facing point lock
but preferably the bolt or plunger) substantially as described with reference to
Figs 5. 6. 7.
4. Apparatus constructed and combined substantially as herein set forth for the
purpose specified.
Dated this 22nd day of October 1888.