Improvements in Fog Signalling Apparatus for Railways.
Year: 1898

page_text: Date of Application, 17th Nov., 1898
Complete Specification Left, 16th Aug., 1899-Accepted, 17th Nov., 1899
PROVISIONAL SPECIFICATION.
Improvements in Fog Signalling Apparatus for Railways.
EDWIN ARTHUR THOMPSON, Eastwood Level Crossing, Parkgate, Nr. Rotherham,
Yorks, Gate Keeper, do hereby declare the nature of this invention to be as
follows:-
-
A button inserted in the rail that is run over by the train, which will form a
connection in an electric current to make a bell ring that is situated on the signal
post & a switch to work from the signal box in connection with the signalling
arm as now in use to switch or stop the electric current from ringing the hell.
Dated this 15th day of November 1898.
COMPLETE SPECIFICATION.
Improvements in Fog Signalling Apparatus for Railways.
I, EDWIN ARTHUR THOMPSON, of Eastwood Level Crossing, Parkgate, Rother-
ham, in the County of York, Gate Keeper, 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 relates to improvements in the method of signalling railway
trains, by an electrical and mechanical system herewith_described.
I place a plunger or push in the rail, or other suitable holder between the ends
of two rails in such a position that the face of the wheels of the locomotive and
vehicles passing over it produces a connection with an electric current, which
actuates a lever causing strokes upon a gong, or hell fixed upon a signal post.
I place a switch to he worked by the attendant in the signal cabin in connection
with the signalling arm now in use, whereby the electric current can be cut out
or set on when required. For the purpose of more fully describing the same
I annex a sheet of drawings.
Fig. 1, represents a locomotive passing over the push A, which acts upon the
contact spring C, attached to the wires from a battery, conveniently placed, and
which is also connected with the electro magnets and gong upon the signal
post, Figs. 2 and 3. When this contact is made by spring C, the electric current
passes round the magnets, the circuit is completed and the clapper strikes the
gong.
Figs. 2 and 3, elevations of the signal post shewing the magnets and gong and
the switch and signal lever.
T
1
seational view of the rail or holder of the plunger marked A.

page_text: shewing the position of the plunger in the holder B when not depressed, C is
the contact spring in the case for holding the same and the connecting
terminals 1, 2. D is a waterproof non-conducting covering to the spring case.
Fig. 5, is an enlarged view of the switch, E, the switch is on the gong electric
circuit, and fixed upon the usual signal post, also attached to the signal lever F,
by a connecting rod G-when the signal arm is set for "danger," by the attendant
in the signal cabin, the same movement of the signal lever Facts upon the
switch E through the connecting rod G and the electric circuit is completed-the
reverse action for "safety," breaks or cuts off the electric current and the gong
is silent.
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 placing a plunger or push in the rail or in other suitable holder, between
the ends of two rails, in such a position that the face of the wheel rim or tyre of
the locomotive and vehicles passing over it, ilepresses it and produces a connection
causing the electric circuit to be completed.
Dated this 15th day of August 1899