An Improved Speed Indicator, chiefly designed for Velocipedes.
Year: 1893

page_text: Date of Application, 17th Feb., 1893
Complete Specification Left, 5th Oct., 1893-Accepted, 11th Nov., 1893 ·
PROVISIONAL SPECIFICATION.
[Communicated from abroad by EUGENE BOULIER, of Paris, in the Republic of
France.]
An Improved Speed Indicator, chiefly designed for Velocipedes.
I, DAVID YOUNG, of the Firm of D. Young & Co., of 11 & 12 Southampton
Buildings, in the County of London, Patent Agents, do hereby declare the nature
of this invention to be as follows :-
:-
This invention relates to an improved automatic speed indicator or "coach"
chiefly designed for cyclists' use, and comprises the application to a velocipede
of a speed indicator mounted on the handle-bar or other convenient part of the
machine and actuated by the movement of the machine along the road.
The improved speed indicator is composed of a winged governor, the spindle
of which turns in a bearing formed in one of the covers of a cylindrical case
containing the mechanism, and carries a pulley on the exterior thereof, operated
by a cord or the like passing around a second pulley of larger diameter mounted
on the front or other wheel of the velocipede; or the said spindle may be driven
in any other convenient manner.
At the interior end of the said rotating spindle is concentrically fitted, an arbor
in such a manner as to slide longitudinally in the said spindle; the said arbor
is provided with two shoulders forming a groove or channel in which rest lugs
or projections formed on the inner ends of the rotating wings or arms; the said
wings or arms are pivoted at the ends thereof near the said arbor to the portion
of the rotating spindle contained in the case of the instrument in such a manner
that they may open and close by centrifugal force proportionally to the speed at
which the velocipede is travelling.
In order to obtain a continuous automatic indication of this speed, the angular
motion of the rotating wings or arms is transmitted through the sliding arbor to
a pointer moving over a graduated dial divided into kilometers per hour or any.
other degrees, such for example, as English miles per hour. For this, purpose
the sliding arbor whose movement is controlled by a suitable spring the tension
of which should be regulated according to the centrifugal force exerted by the
wings or arms, is arranged to operate a small crank mounted on an arbor which
also carries the indicating pointer; the said crank is provided with a pin or button
which is pressed against the spring by means of another spring of smaller
strength. The arbor carrying the pointer is placed perpendicularly to the said
sliding arbor.
A suitable clamp serves to secure the apparatus to the handle-bar of the
velocipede or to any other convenient part of the machine in which the rider can
keep his eyes on the pointer.
It is evident that the rider, knowing the speed at which he wishes to travel, can
satisfy himself at any moment to what extent be deviates from it, and can regulate
the working of his machine accordingly.
D. YOUNG & Co.,
11 & 12, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: COME LEID K
An Improved Speed Indicator, chiefly designed for Velocipedes.
I, DAVID YOUNG, Patent Agent, of the Firm of D. Young & Co.,
11 & 12 Southampton Buildings, London, W.C. 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 :-
"
This invention relates to an improved automatic speed indicator or "coach
chiefly designed for cyclists' use, and comprises the application to a velocipede of a
speed indicator mounted on the handle-bar or other convenient part of the machine
and actuated by the movement of the machine when travelling along the road.
In the accompanying drawings I have shown how my said invention may be
conveniently and advantageously carried into practice :-
Figure 1 is a side elevation of the front portion of a bicyclette showing the
method of applying my invention thereto.
Figure 2 is an external view of the speed indicator, looking at the face of
the dial.
Figure 3 is a sectional side elevation, the cover of the case containing the
mechanism being removed.
Figure 4 is a longitudinal central section.
The improved speed indicator is composed of a winged governor, the spindle a of
which turns in a bearing formed in one of the covers of a cylindrical case G
containing the mechanism, and carries a small pulley b on the exterior thereof,
operated by a cord or the like passing around a pulley b' of larger diameter
mounted on the front wheel of the bicyclette in the exaniple shown; or the said
spindle may be driven in any other convenient manner.
In the interior end of the spindle a is concentrically fitted an arbor m in such
a manner as to slide longitudinally in the said spindle; the said arbor is provided
with two shoulders forming a groove or channel m¹ in which rest pins or
studs goa projections or lugs n formed on the inner ends of the rotating wings or
blades, the said wings or blades being pivoted, near the said arbor, to the portion
of the rotating spindle a contained in the case G of the instrument, in such a
manner that they may be moved away from and towards each other under the
action of the varying centrifugal force, as the speed at which the velocipede is
travelling increases or diminishes.
In order to obtain a continuous automatic indication of this speed, the angular
motion of the rotating wings or blades is transmitted through the sliding arbor m
to a pointer moving over a graduated dial R divided into kilomètres per hour,
miles per hour or other suitable degrees; or, as shown in Figure 2, for example,
the dial R is divided into kilomètres per hour and also into English miles per hour.
For the purpose of indicating the speed, the sliding arbor m, whose movement is
controlled by a suitable spring f the tension of which should be regulated according
to the centrifugal force exerted by the wings or blades l, is arranged to operate a
small crank mounted on an arbor which also carries the indicating
pointer the said crank is provided with a pin or button n' which is pressed
against the spring f by means of a weaker spring o.
The arbor carrying the
pointer is placed perpendicularly to the said sliding arbor m.
1111
A suitable clamp c serves to secure the apparatus to the handle-bar of the
velocipede or to any other convenient part of the machine so as to enable the rider
to keep his eyes on the pointer n¹¹11.
It is thus evident that the rider, knowing the speed at which he wishes to travel,
can satisfy himself at any moment, to what extent he deviates from it, and can
regulate the working of his machine accordingly.

page_text: 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 :-
An automatic speed indicator or "coach" for velocipedes and other vehicles,
characterized by the utilization of the centrifugal force developed by two wings or
blades 1, pivotally attached to a spindle a which receives a rapid and continuous
rotary motion from one of the wheels of the vehicle, the separation of the wings or
blades, by centrifugal force being transmitted to an arbor m movable longi-
tudinally in the spindle a, by means of two projections or lugs n, n on the said
wings or blades, the pins or studs of which lugs enter a groove m¹.in the said
arbor, which itself moves a pointer over a suitably graduated dial to an extent
corresponding to the opening of the said wings or blades 1, that is to say, corre-
sponding to the. speed of the vehicle, which speed with all its variations is thus
continuously indicated on the said dial, substantially as hereinbefore described.
Dated the 5th day of Ontahan 1902
D. YOUNG & Co.,
11 & 12, Southampton Buildings, London, W.C.,
Agents for the Applicant.
D. YOUNG & Co.,
11 & 12, Southampton Buildings, London, W.C.,
Agents for the Applicant.