A Safety Device for use in connection with Carriages Propelled by Electricity.
Year: 1897

page_text: Date of Application, 14th Aug., 1897
Complete Specification Left, 13th May, 1898-Accepted, 16th July, 1898
PROVISIONAL SPECIFICATION.
A Safety Device for use in connection with Carriages Propelled
by Electricity.
We, The Honourable REGINALD THOMAS DUDLEY BROUGHAM, and WALTER
CHARLES BERSEY, both of The London Electrical Cab Co., Ltd., of Juxon Street,
Lambeth, in the County of Surrey, do hereby declare the nature of this inven-
tion to be as follows:-
The object of this invention is to prevent unauthorised persons from starting
the carriage when left by the driver.
For this purpose a "plug" or "key" box with two open contacts inside is
interposed between one pole of the battery and the switch controlling the motor.
A plug or key of special design (which may be varied so that each key will only
fit its own box) is provided to connect the two contacts inside.
When the driver leaves the carriage, he removes the plug or key and takes it
with him. While this plug or key is out, it is impossible to start the motor or
move the carriage.
Dated this 13th day of August 1897
A Safety Device for use in connection with Carriages Propelled
by Electricity.
We, The Honourable REGINALD THOMAS DUDLEY BROUGHAM, now of 22A,.
Dorset Street, Portman Square, W., and WALTER CHARLES BERSEY, now of 28,
Victoria Street, Westminster, S.W., both formerly of The London Electrical Cab
Co., Ld., of Juxon Street, Lambeth, in the County of Surrey, do hereby declare
the nature of this invention and in what manner the same is to be performed
to be particularly described and ascertained in and by the following statement:-
The object of this invention is to prevent unauthorised persons from starting
the carriage when left by the driver.
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For this purpose a plug or "key" box with two open contacts inside is
interposed between one pole of the battery and the switch controlling the motor.
A plug or key of special design (which may be varied so that each key will only
fit its own box) is provided to connect the two contacts inside.
When the driver leaves the carriage, he removes the plug or key and takes it
017

page_text: with him. While this plug or key is out, it is impossible to start the motor or
move the carriage.
Figure 1 is a vertical section, and Figure 2 a plan, of the box. Figure 3 is a
side elevation and Figure 4 an end elevation, of the key.
The wire from one pole of the battery is connected by the binding screw a¹
to the spring plate a and the wire from the other pole by the screw 6¹ to the
spring plate 6. The key c is passed through the hole d in the top of the box,
being guided by the plate e, and when its flange c¹ comes into contact with the
plated on the top of the box it is turned the projection at its end entering
between the plates a and b coming into the position shown in dotted lines in
Figure 2. The circuit is then closed through the plate a, projection c³, and the
plate b.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is:-
1. The combination of the box, the two open contacts, and the key, substan-
tially as described.
2. A safety device for use in connection with carriages propelled by electricity,
substantially as described and shown in the drawings.
Dated this 15th day of April 1898.
.
REGINALD THOMAS DUDLEY BROUGHAM.
WALTER CHARLES BERSEY.
REGINALD THOMAS DUDLEY BROUGHAM.
WALTER CHARLES BERSEY.