Electric Safety Signalling Devices for Railways.
Year: 1889

page_text: Date of Application, 3rd June, 1889
Complete Specification Left, 3rd Mar., 1890-Accepted, 3rd June, 1890
PROVISIONAL SPECIFICATION.
Electric Safety Signalling Devices for Railways.
I, JOSEF HAAS Junior, of No. 84 Haupt Strasse, in the City of Vienna, in the
Austrian Empire, Engineer, do hereby declare the nature of my said invention to
be as follows:-
My invention relates to electric safety signalling devices for railways and consists
of an automatic reliable safety signalling, which, in spite of fog, snow, storm or smoke,
can be seen with certainty. This safety device consists essentially in employing an
electric conduit, which is in connection with an electric light on the signal disc by
means of a suitable electric force.
The signal disc "Stop" is arranged to turn with its axis in a frame and has a pin
on the wind screen to which the electric light is attached. The bed is provided with
a pin on which a coil and an angle iron is attached. A inagnet with axis is movably
attached to the angle iron whilst a stop pin or peg is fixed in the bed. An eccentrically
formed piece of metal is fixed to the axle of the signal disc "Stop" which effects the
releasing.
A rail arranged at a predetermined distance from the signal is provided with a
boring, in which a projecting pin located above the rail has its bearing, or the
rail is provided at its lower surface with a suitable pin. A key provided with two
springs is sunk into and attached to the sleeper beneath the aforenamed rail. One
of the key springs is connected by means of a wire running beneath the rail to the
battery whilst the other spring is connected to the one wire end of the coil and the
stop pin to the other end of the wire. A wire runs from the stop pin to the accumu-
lator, a second wire from the same and a third from the magnet above the original
disc to the lamp.
In the moment when the locomotive passes the point of the rail to which the key is
attached, the connection is made with the coil through the connecting wires. The
magnet with spring is pressed by mechanical contact onto the coil and the spring
brought into connection with the stop or arresting pin.
Through the contact of the magnet with the coil and the spring with the stop pin,
the circuit is closed, and the signal light ignited so as to give the engine driver of the
up and also the down train a light signal visible at a considerable distance and before
the same have reached the distance signal.
If the disc is now turned by the wire pull the eccentric piece of metal is rotated for
about 90° on its axle and presses the spring and the magnet from the coil and the stop
pin and the disc set out of operation, id est, the connection is broken, the signal
extinguished and the line given free.
If a distance in front of the disc "Stop" is not fixed the key in the rail may be
dispensed with and in this case the signal disc "Stop" is provided with a shunting
device so that at each time the disc is turned onto "Stop" the light is ignited
without driving onto the pin, it being necessary to employ a constant current.
The electric signal light can be put in connection with the station office by means
of suitable wires so that the same can be ignited from the office.
Dated this 3rd day of June 1889.

page_text: COMPLETE SPECIFICATION.
Electric Safety Signalling Devices for Railways.
1. JOSEF HAAS, Junior, of No. 84 Haupt Strasse, in the City of Vienna, in the
Austrian Empire, Engineer, do hereby declare the nature of my said invention, and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement, reference being had to the accom-
panying sheet of drawings and to the letters and figures marked thereon, that is to
Bay :-
My invention relates to electric safety signalling devices for railways and consists
of an automatic reliable safety signal, which, in spite of fog, snow, storm or smoke,
can be seen with certainty. This safety device consists essentially of two sets of
electric conductors, one of which connects an electric lamp on the signal disc with a
suitable source of electric force.
The signal disc Sch is arranged to turn with its axis A in a frame L and has a
pink on the wind screen. W to which the electric light is attached.
In the accompanying drawings,
Figure 1 is a side view,
Figure 2 a top view, and
Figure 3 a front elevation of my improved signalling device.
Figure 4 represents the rail and the contact pin.
The bed P is provided with a pin x on which a coil sp and an angle piece w is
attached. An armature with axis M' is movably attached to the angle piece w whilst
a contact maker St is fixed outside the bed P. An eccentrically formed piece of
metal E is fixed to the axle A of the signal disc S c h which effects the switching off
of the current from the electric lamp.
A rail S at a predetermined distance from the signal is provided with a hole
in which a pin s. t projecting slightly above the rail has its bearing or the rail S
may be provided at its lower surface with a suitable pin s, (Figure 4). A plate T
provided with two springs f, f¹ is sunk into and attached to the sleeper W¹ beneath
the aforementioned rail. One of the springs fis connected by means of a wire K
running beneath the rail S to the battery B, whilst the other spring f' is connected to
one end J of the coil sp of an electromagnet the other end C of the coil sp being
connected to the battery B. A wire Gruns from the contact maker St to the
accumulator, a second wire H from the accumulator to the electric lamp above
the signal disc and a third D from the electric lamp, along the armature M to
the spring F.
At the moment when the locomotive passes over the point of the rail S at which
the pin or peg stor s is placed, the said pin or peg is pressed down thereby, the
springs ff are brought into contact and a connection is made between the battery B
and the coil sp through the connecting wires K, G. The armature M with spring F
is attracted and the spring F thereby brought into connection with the tip z of the
contact maker S t.
Through the contact of the spring F on the armature M with the contact maker St
the accumulator is brought into circuit with the electric lamp above the signal disc
through the wires G. D. H. The lamp is thus ignited so as to give the engine driver
of the up and also the down train a light signal visible at a considerable distance, and
before the distance signal has been reached.
If the disc Sch is now turned by the wire pull Z the eccentric piece of
metal E is rotated with the axis A for about 90° and presses on the rear end of
the spring F withdrawing the armature M from the electro magnet and the front
end of the spring F from the contact maker St as shewn in dotted lines in
Figure 2; the connection being thereby broken, the signal light is extinguished
and the line given free.

page_text: If it is not desired to light the electric lamp automatically by the train while
it is still at a given distance in front of the signal disc the pin or peg in the
rail may be dispensed with, and in this case the signal disc is provided with a
switch so that each time the disc is turned into the "stop" position the light is
ignited it being, however, in such case necessary to employ a constant current.
The electric signal light can be put in connection with the station office by means
of suitable wires so that the same can be ignited from the office.
It will be evident from the foregoing to all versed in the art that the details of my
improved electric safety signalling device can be modified in many ways according to
the requirements of each special case without in any way departing from the nature
of my said invention.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
In electric safety signalling devices for railways, the application and arrangement
of an electric conduit or conductors for igniting an electric light on signals, said
conduits or conductors being set in operation either direct from the office at the
station or at a predetermined distance in advance of the station by the train passing
over a pin stor s in the rail S, when the signal stands at "stop" or when stopping
distance is not given by means of a constant current which is put into operation as
soon as the signal disc is placed in the " stop" position, substantially as and for the
purpose set forth and shown.
HETHE
VIGYAN AY
JOSEF HAAS, JUNR.
W. H. Beck,
Per G. E. Gunyon,
115, Cannon Street, London, Agent.