An Improved Fog Signal for Railways.
Year: 1897

page_text: Date of Application, 6th Nov., 1897
Complete Specification Left, 5th July, 1898-Accepted, 6th Aug., 1898
PROVISIONAL SPECIFICATION.
An Improved Fog Signal for Railways.
OSCAR HOHNRODT, 46, Buxton Road, Stratford, E., Commercial Clerk, do hereby
declare the nature of this invention to be as follows:-
This signal consists of two parts viz. A an iron bar 20 feet in length which is
placed on the permanent way at a distance of 9 inches outside the rails and B
a lever attached to the engine in such a position as to touch the bar A on passing
over it. The bar A is fastened by means of pins to short sliding rods, the tops
of which when upright will be 4 inches above the rails. The lower ends of the
sliding rods are placed in sockets and secured by a pin and the sockets are fastened
to the sleepers. The ends of the bar A are sloping downward so as to allow the
lever B on the engine to slide easily on to the bar. The bar can be raised or
lowered by a rod connected with the ordinary signalling gear and worked by a
lever in the signal box! The bar when lowered will be level with the rails and
when raised 4 inches above the rails.
B the lever is attached to the engine below the drivers cab in such manner
as to swing backward and forward on a pin in the centre of the lever. The lower
part of the lever is shaped like a fork and an iron roller revolving on a pin placed
between the ends of the fork. The ends of the lever are 5 inches apart. The
lever when at rest hangs perpendicularly and the lower end reaches to within
2 inches of the rails. A chain is attached to the top of the lever, which passes
between two grooved wheels into the drivers cab where it is connected with a
small arm-signal. One bar A is placed at the home signal and another at the
distarif signal. If the line is blocked the bars are raised by the signalman and
the engine on passing over the bar at the home signal will deflect the lever and
this will set the signal in the drivers cab at danger and at the same time ring an
electric bell. The train will then slow up and come to a standstill on the bar at
the distant signal. As soon as the line is clear, the signalman will drop the bar
and this will allow the signal in the drivers cab to drop, thus telling him that
the line is clear.
Dated this fith dor of November 1807
An Improved Fog Signal for Railways.
1, OSCAR HOHNRODT, 46, Buxton Road, Stratford, Essex, Commercial Clerk,
do hereby declare the nature of this invention and in what manner the same
[Prise 8d.1

page_text: is to be performed, to be particularly described and ascertained in and by the
following statement:
-
This signal consists of two parts as follows. Figure 1 is an iron bar about
10 feet in length which is placed on the permanent way about 9 inches outside the
rails and Figure II is an attachment to the engine. The bar a is attached by
means of pins to the short sliding rods b; the sliding rods bare supported ou
chairs c by a pin at d and the chairs are fastened to the sleepers.
The ends of the bar a are sloping downward. The bar a is raised automatically
by a weight e attached to one of the sliding rods. A wire connects the sliding
rods with the wires working the ordinary signals. The bar a is depressed on
a level with the rails when the line is clear and raised 4 inches above the rails
when the signal is at danger.
Figure II represents the attachment to the engine. A casing f which supports
the lever is attached to the carriage of the engine. The lower part of the lever g
is shaped like a fork and a roller / placed between the ends of the fork. The bottom
of the lever reaches within 2 inches of the rail. A chain jis attached to the top
of the lever and this chain passes between 2 grooved wheels k into the cab of the
engine, where it is connected with a small signal. When the line is blocked
the bar a in Figure I is raised and the lever g on passing over it, will be deflected
and set the signal at danger and at the same time ring a bell to call the drivers
attention to it. The train will then slow up and come to a standstill on the next
bar. When the line is clear again the signalman will drop the bar and this will
cause the signal to drop, thus telling the driver to proceed.
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
I. In a bar attached on sliding rods to the sleepers outside the rails which is
raised or lowered by means of wires connected with the signal box.
II. In a lever attached to the engine which on passing over the bar is deflected.
III. In a signal placed in the cab of the engine and connected by means of a
chain to the top of the lever.
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