Improvements in and connected with Passengers' Communication Apparatus for Railway Trains.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in and connected with Passengers' Communication
Apparatus for Railway Trains.
I, ADAMSON GEORGE WILD, of Caxton Road, City of Sheffield, Engineer, do
hereby declare the nature of my invention to be as follows;-
My invention relates to an improved combination three way relief valve,
indicator, and signal, which may be connected with any system of automatic,
air or vacuum brake, and by means of which the brake may be applied, and a
signal given simultaneously.
It is intended to be fixed at the end of each vehicle in a central position,
and to have connected with it a communication cord or chain passing through
all the compartments on either or both sides, and capable of being used by
passengers.
It consists in the combination of a horizontal three way plugcock, with suit-
able connections to either the "Westinghouse" or other automatic air brake, or
the automatic vacuum brake, and having a semaphore or sight indicator, and an
alarm or sound indicator.
Upon the projecting end of the plug I fix a lever, to the upper arm of which
I attach a pull cord, and upon the lower or longer arm is fixed a disc or its
equivalent to act as a sight indicator, for which purpose it may be suitably
coloured.
At the upper part of the cock, at a point where the released air or vacuum (as
the case may be) is.open to the atmosphere, when the cock is open, I fix a whistle
or similar alarm operated by air pressure, constructed preferably of an inner and
outer tube with perforated air passages, and covered by a domeshaped cap, by
means of which the internal parts of the cock are protected against dirt and
injury.
The plug has a three or T shaped way through it, which when the lever is
pulled over by the cord opens the communication between the compressed air
(or vacuum, as the case may be) with the atmosphere through the sound alarm
or whistle, at the same time the disc is raised to a more conspicuous position.
The released air pressure rushing through the whistle, or the vacuum sucking
the air through the whistle, from the atmosphere, causes the alarm to sound,
whilst the break in either system causes the brake to be automatically applied.
Various modifications in fixing of the apparatus to suit the method of operat-
ing the same, such as when two independent levers connected directly to two
cords are used, may be made if desired.
Dated the 25th day of November 1899
ROBT. F. DRURY, C.P.A.,
Agent for Applicant,
Bank Buildings, George Street, Sheffield.

page_text: ади
Apparatus for Railway Trains.
I, ADAMSON GEORGE WILD, of Caxton Road, City of Sheffield, Engineer, do
hereby declare the nature of this invention and in what manner the same has to
be performed, to be particularly described and ascertained in and by the follow-
ing statement:-
.
My invention relates to an improved combination three way relief valve,
indicator, and signal, which may be connected with any system of automatic
air or vacuum brake, and by means of which the brake may be applied and a
signal given simultaneously.
The apparatus is shown in the accompanying drawings; similar letters refer
to similar parts in the various figures in which they occur.
Fig. 1, is a side elevation of the apparatus.
Fig. 2, a front elevation of same.
The apparatus is intended to be fixed at the end of each vehicle in a central
position outside, and to have connected with it, a communication cord or chain
passing through all of the compartments on one or both sides, and in a con-
venient position to be used when required by the passengers, who have only to
pull the cord in order to put the apparatus in action.
It consists of a horizontal threeway cock in combination with a semaphore or
sight signal and an alarm or sound indicator, and having suitable connections
with either the "Westinghouse or other automatic air brake, or the vacuum
brake.
"
Upon the projecting end of the plug A, of the threeway cock B, I fix a lever C,
and to the upper arm C¹, I attach the end of the pull cord D, and upon the lower
and longer arm C2, I secure a disc E, or its equivalent, to act as a sight indicator,
for which purpose it may be suitably coloured.
At the upper part of the cock, at a point where the released air or vacuum (as
the case may be) is opened to the atmosphere, when the cock is turned for that
purpose, I fix a whistle F, or other similar alarm operated by the passage of
air, and constructed preferably with an inner and an outer tube G and H, each
provided with perforations or air passages as shown, and covered with a dome I,
which protects the openings to the internal parts of the cock against the passage
of dirt and from other sources of injury.
The plug A, has a threeway passage through it indicated in Fig. 2, which when
the lever C, is pulled over in the direction of the arrow in Fig. 2, by the cord D,
opens the communication between the compressed air (or the vacuum as the
case may be) to the atmosphere, through the whistle or sound-alarm, at the same
time raising the disc E, to a nearly horizontal and conspicuous position.
The released air under pressure rushing through the whistle, or the vacuum
sucking in air through the whistle from the atmosphere causes the alarm to
sound, whilst the break in either of the systems used resulting therefrom causes
the brakes to be applied automatically and instantaneously.
I prefer to make the apparatus with two nozzles J and K, in order that it
may be readily connected with the piping of either the vacuum or the com-
pressed air system, or in some cases to both.
The airways through the plug A, are so arranged that when the apparatus is
at rest, all the inlet and outlet passages are closed, and the disc E, hangs ver-
tically and may be concealed if desired; but when the cord D, is pulled, the disc
is raised segmentally to a projecting and prominent position and may be retained
there by a catch or the like until it is released.

page_text: The plug is also turned bringing the airways opposite to the several corre-
sponding inlet and outlet passages and causing the alarm to be sounded.
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:-
A railway passengers communication apparatus, consisting of a threeway cock B,
an operating lever C, provided with a disc E, or its equivalent, a sound alarm F,
and one or both of the connecting nozzles J and K; in combination, constructed
and arranged as hereinbefore described and shown.
Dated the 16th day of August 1900.
ROBT. F. DRURY, C.P.A.,
Agent for Applicant,