Improvements in Electrical Fog-signalling Apparatus for Railways.
Year: 1889

page_text: Date of Application, 31st May, 1889
Complete Specification Left, 17th Feb., 1890-Accepted, 22nd Mar., 1890
PROVISIONAL SPECIFICATION.
Improvements in Electrical Fog-signalling Apparatus for Railways.
EDGAR ALEXANDER HARVEY of Brookdale Lindley Road Leyton Essex, Clerk &
MARTIN EDWARD BROOKE of 8 Vicarage Road Stratford Essex, Engineer do hereby
declare the nature of this invention to be as follows:-
Place 2 metal lines between the four footway running parallel with the ordinary
metals to each of which connect a wire, & convey same through pipes to electric
bell & battery, with disconnector fixed in signal box, the same being arranged so
as to cut the current when required. Fix in cab of engine an electric bell, to
which fasten 2 wires, & convey same, through pipes at side of engine, to 2 small
cylinders fixed between the guard irons. The cylinders to be placed side by side,
at a distance apart equivalent with the metals placed in four footway of lines.
The two cylinders to be fitted with a plunger, spring, & wheel & the said wheels to
be placed so as to come in contact with the two metals in four footway. Immediately
the said wheels come in contact with the said metals a circular current of electricity
is set up between the signal box & the engine, causing the bell in signal box & bell in
cab of engine to ring at the same time.
Dated this 90th do.. SM 1000
EDGAR A. HARVEY.
MARTIN E. BROOKE.
COMPLETE SPECIFICATION.
Improvements in Electrical Fog-signalling Apparatus for Railways.
We, EDGAR ALEXANDER HARVEY of Brookdale, Lindley Road, Leyton, Essex, and
MARTIN EDWARD BROOKE of 8 Vicarage Road, Stratford, Essex, 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 :-
Place two metal lines between the four footway running parallel with the ordinary
metals to each of which connect a wire, and convey same through pipes to electric
bell and battery with disconnector fixed in signal box, the same being arranged so
as to cut the current when required. Fix in cab of engine an electric bell to which
fasten two wires and convey same through pipes at side of engine, to two small
cylinders fixed between the guard irons, the cylinders to be placed side by side, at a
distance apart equivalent with the metals placed in four footway of lines. The two
cylinders to be fitted with a plunger, spring, and wheel, and the said wheels to be
placed so as to come in contact with the two metals in four footway. Immediately
the said wheels come in contact with the said metals a circular current of electricity
is set up between the signal box and the engine causing the bell in signal box and
bell in cab of engine to ring at the same time.
In order that our said invention may be more fully understood and readily carried
into effect we will proceed to describe the drawings hereunto annexed.
* DESCRIPTION OF THE DRAWINGS.
Figure 1 shows a side elevation partly in section, and
Figure 2 a front elevation of part of the engine fitted with apparatus according to
our invention.
AA are the two metal lines placed in the four-foot way and in electrical com-
munication with the signal box. B B are two cylinders fixed to the underside of
the engine and containing springs C which act upon pistons D carrying wheels E E
which bear upon the plates A thus completing the electric circuit through the engine.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
:-
1. The combination with two lines of insulated metal in electrical connection
with the signal box of wheels carried by the engine and bearing upon the insulated
⚫lines completing the electric circuit through the engine substantially as described.
2. In apparatus such as referred to in claim 1 mounting the wheels upon pistons
working in cylinders and pressed downwards by springs substantially as described.
3. Electrical fog signal apparatus for railways substantially as described and shown
in the drawings.
Doted this 20th day of Janno 1800
EDGAR A. HARVEY.
MARTIN E. BROOKE.