Improved Railway Fogsignalling Apparatus.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improved Railway Fogsignalling Apparatus.
JOHN LEDBROOK, 25, Golden Hillock Road, Small Heath, Birmingham, Rail-
way Traffic Inspector, WILLIAM ANDREWs, 44, Southfield Street, Worcester,
Railway Signal Inspector, do hereby declare the nature of this invention to be
as follows:-
:-
The invention consists of an iron or steel treadle fixed outside of one of the
rails over which the trains pass. An iron or steel bar or lever fitted with a suit-
able roller or rollers with one or more adjusting weights is fitted, one end under
the treadle and the other end is fitted with one or more hammers. When the
end of the bar or lever which is fixed under the treadle is pressed down by
means of an engine or train passing over the treadle, the opposite end of the bar
or lever is raised (and should the fixed semaphore or other signal be shewing
danger) the hammer strikes a steel or other metal gong once, as an indication to
the enginemen that the signal is shewing danger, and when the engine or the
last vehicle of the train passes off the treadle, the gong if required is again
sounded once as an indication to the guard that the signal is shewing danger,
and at the same time the bar or lever drops to its normal position.
The gong is controlled by the signal & is not struck when the signal is shewing
"all right."
1000
1
JOHN LEDBROOK,
WILLIAM ANDREWS.
Improved Railway Fogsignalling Apparatus.
JOHN LEDBROOK, 25, Golden Hillock Road, Small Heath, Birmingham, Rail-
way Traffic Inspector, WILLIAM ANDREWS, 44, Southfield Street, Worcester,
Railway Signal Inspector, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
Our invention has reference to an apparatus for sounding a metal gong, as
an intimation to railway enginemen when the semaphore, distant, or other
railway signals are shewing normal, or danger position. The accompanying
drawing illustrates the application of our apparatus. A is a parallel iron or
steel bar, balanced in such a manner as to bring it back to its normal position,
CO
071

page_text: after the passing of an engine or train, it is depressed by the engine or other
vehicles passing over it, and acts as a treadle.
B is a straight lever, to which a hammer is connected, fitted with or without
springs and trigger, the whole forming a striking gear to the gong, and actuated
by the depression of the parallel bar.
It is obvious the lever, E, may be cranked or straight.
C is an iron or wooden standard fixed by the side of the running line.
D) is an iron or steel stud fixed to the standard "C" on which the T lever,
which carries the gong, swings.
E is a shaped lever.
F is the gong which is disengaged from the hammer when the signal is placed
"all right" position, and engaged with the hammer when in its normal,
or danger position.
to an
G is the distant signal wire, which actuates the T or gong lever previous to
working the signal, thus ensuring the fog signal apparatus working before the
signal is worked.
Having now particularly described and ascertained the nature of our said in-
vention, and in what manner the same is to be performed, we declare that what
we claim is :-
The method by which the gong is engaged and disengaged with the striking
gear, as shewn in drawing at D E & F.
Dated this 29th day of December 1898.