Speed Alarm for Cycles, Motor Cars, Carriages, and such like.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
A Speed Alarm for Cycles, Motor Cars, Carriages, and such like.
I, Ross FRANKLIN MOORE, Major Royal Engineers (retired list), 78, Bensham
Manor Road, Thornton Heath, Surrey, do hereby declare the nature of this inven-
tion to be as follows:-
:-
On an electrically insulated wire spoke fitted to one of the revolving wheels of
the carriage is fixed a spiral spring. This spring at one end is attached to the
axle of the wheel and at the other carries a comparatively heavy metal weight.
Beyond the weight is an electrical contact plate which is capable of being adjusted
at different, distances from the weight at the end of the spring on the wire spoke.
The contact plate is in electrical communication with an electrical battery and
a chattering bell also the heavy weight at the end of the spiral spring.
When the wheel of the carriage revolves its centrifugal force acting on the
weight at the end of the spring causes the spiral spring to stretch. When suffi-
ciently stretched the weight on the spring makes electrical contact with the
contact plate. The electrical current from the electric battery then passes and the
bell is set ringing.
By adjusting the interval between the contact plate and the weight at the end
of the spring the speed of the carriage at which the bell will chatter can be arranged
for.
1007
A Speed Alarm for Cycles, Motor Cars, Carriages, and such like.
I, Ross FRANKLIN MOORE, Royal Engineers (retired list), 78, Bensham Manor
Road, Thornton Heath, 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:
On an electrically insulated wire spoke, A, fitted to one of the revolving wheels
of the carriage is fixed a spiral spring S. This spring is enclosed in a metal
cylinder E, which is just large enough to admit of free play for the spring inside.
The spring, S, at one end is attached to an electrically insulating block C, which is
clamped on to the axle by the clamps D. The other end of the spring is attached
to the head of the containing cylinder E.
On the outside of the cylinder, E, is a sliding bar, F, which works through a
clamp, G.-At H is a platinum point for making electrical contact with the

page_text: spring I.-A scale B, is marked on the cylinder for adjusting the position required
for the sliding bar F for any particular speed.
An electrical brush contact arrangement, J, is fixed on the axle clear of the
spokes. The plate on the axle on which the brush works is electrically insulated
from the axle but is in electrical connection with the spring, S, by means of the
insulated wire K.
The brush at J is in electrical connection with one pole of an electrical battery
by means of the wire L.
The spring I which is fixed on the top of the metal pillar M is in electrical
communication through the metal of the carriage to a chattering bell and so to the
other pole of the battery.
When the wheel of the carriage revolves the centrifugal force acting on the
cylinder E forces it outwards from the axle and so stretches the spring S.
When the spiral spring S is stretched sufficiently to cause contact between the
platinum point H and the spring I the electric current from the battery passes
and the electric bell chatters.
The chattering bell recommended is one controlled by a second spring to the
clapper so that it can be adjusted not. to be sensitive to ordinary. jolting. The
arm for the clapper should for the same reason be arranged to work horizontally.
The bell coils should be capable of being worked by one dry cell as being con-
venient.
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
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