AN ELECTRICAL TRAIN DESCRIBER FOR INDICATING ON A DISTANT DIAL THE NAMES OF TRAINS, APPLICABLE ALSO FOR OTHER Purposes
Year: 1874

page_text: LETTERS PATENT to Charles Vincent Walker, Fellow of the Royal
Society, of Fernside, Red Hill, in the County of Surrey, Telegraphi
Engineer, for the Invention of "AN ELECTRICAL TRAIN DESCRIBER FOR
INDICATING ON A DISTANT DIAL THE NAMES OF TRAINS, APPLICABLE ALSO
FOR OTHER Purposes.”
Sealed the 10th July 1874, and dated the 24th March 1874..
PROVISIONAL SPECIFICATION left by the said Charles Vincent
Walker at the Office of the Commissioners of Patents, with his
Petition, on the 24th March 1874.
I, CHARLES VINCENT, WALKER, Fellow of the Royal Society, of
Fernside, Red Hill, in the County of Surrey, Telegraph Engineer, do
hereby declare the nature of the said Invention for "AN ELECTRICAL
TRAIN DESCRIBER FOR INDICATING ON A DISTANT DIAL THE NAMES OF TRAINS,
APPLICABLE ALSO FOR OTHER PURPOSES," to be as follows:-
"
The train describer" consists of two parts a "sender' and
"receiver" each provided with a visible circular dial and an index or

page_text: pointer. The dials correspond in the number of divisions and in the
writing at each division.
The "sender" includes a running train of wheels. The arbor that
carries the index or pointer carries also a disc divided to correspond
with the number of divisions of the dial having a pin or stud at each
division, which pins as they pass come into electric contact with a
spring and send signals along a wire prepared to receive them. The
arbor carries also a finger or stop. Levers corresponding in number and
position with the divisions are on the periphery of the dial, radiating
from the centre. The lever facing any writing being pulled forward
stops the train of wheels as soon as the index points to the said
writing.
The "receiver" includes an arbor which carrics both an index or
pointer and a 'scape wheel, and includes also an clectro-magnet in
connection with a pair of pallets for driving the 'scape wheel. The
"receiver" is in electrical connection with the "sender." For every
contact between the pin and spring in the "sender" the index of the
"receiver moves on one division and the two indexes point to the same
writing.
"
The original object of this Invention is for giving instant information
to a railway signal station, where the trains are many and of great
variety, of the name of the train next on its way. It admits also of
extensive application in houses of business, hotels, ships, &c., &c., in
which cases it may be convenient to include a single stroke bell or other
bell in circuit with the receiver.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Charles Vincent Walker in the Great Seal
Patent Office on the 23rd September 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
VINCENT WALKER, Fellow of the Royal Society, of Fernside, Red Hill, 3
in the County of Surrey, Telegraph Engineer, send grecting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fourth day of March, in the

page_text: :
year of our Lord One thousand eight hundred and seventy-four, in
the thirty-seventh year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said Charles Vincent Walker,
Her special license, that I, the said Charles Vincent Walker, my
executors, administrators, and assigns, or such others as I, the said
Charles Vincent Walker, my executors, administrators, and assigns,
should at any time agree with, and no others, from time to time and
at all times thereafter during the term therein expressed, should and
lawfully, might make, use, exercise, and vend, within the United
Kingdom of Great Britain and Ireland, the Channel Islands and Isle
of Man, an Invention for "AN ELECTRICAL TRAIN DESCRIBER FOR INDICATING
ON A DISTANT DIAL THE NAMES OF TRAINS, APPLICABLE ALSO FOR OTHER PURPOSES,"
upon the condition (amongst others) that I, the said Charles Vincent
Walker, my executors or administrators, by an instrument in writing
under my, or their, or one of their hands and seals, should particularly
describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed; and cause the same to be
filed in the Great Seal Patent Office within six calendar months next
and immediately after the date of the said Letters Patent."
NOW KNOW YE, that I, the said Charles Vincent Walker, do
hereby declare the nature of the said Invention, and in what manner
the same is to be performed, to be particularly described and ascertained
in and by the following statement thereof, that is to say:
The train describer is an electro-magnetic apparatus and consists of.
two parts or distinct instruments, one of which is called the sender
because it is constructed for sending only telegraph signals from one
station to a receiver at another station. It is placed at the station from
which the signals for which it is prepared are to be sent.
The other instrument is called the receiver because it is constructed
for receiving only telegraph signals at one station from a sender at
another station, it is placed at the station at which the signals for which
it is prepared are to be received.
A single telegraph wire is to be erected in the usual way between the
two stations from the sender to the receiver. Externally every instru-
ment presents to the eye a circular dial like the dial of a clock. In place
of the numbers or figures seen on a clock dial the train describer has
labels bearing the names of trains, &c.. The labels. are not painted on

page_text: carries the contact pins at the other end. The stud above mentioned
passes through the tube and serves as an axis on which it rotates free of
the index, and free of the back plate, a click and ratchet are fitted to the
tube.
The insulated contact spring is mounted on the fixed back plate in
such a position that pin after pin comes into contact with it as the tube
with the dial and disc are rotated.
Studs or knobs may be fitted to the dial facing each label for con-
venience of rotation, or a single stud fixed or movable may be used.'
Having now described the nature of my Invention and in what
manner the same is to be performed, I wish it to be understood that I
lay no claim to the separate and several parts of the apparatus described
above as of my Invention or to the exclusive use of such several or
separate parts except when the same are combined and employed for
the purpose or purposes of the said Invention, but I claim the combined
arrangement of apparatus substantially as herein described for imparting
a step-by-step, motion to an index at a distant station to correspond in
position with an index at another station; also in attaching a trigger
near to the armature of a single stroke bell for locking the armature
after the first stroke on the bell and fixing it until released by mechanical
action, substantially as above described.
.
In witness whereof, I, the said Charles Vincent Walker, have
hereunto set my hand and seal, this Twelfth day of August,
in the year of our Lord One thousand eight hundred and seventy-
four