Improvements in Elastic Tyres for the Wheels of Velocipedes and other Vehicles.
Year: 1893

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Date of Application (in United Kingdom), 14th Dec., 1893
Complete Specification Left, 14th Dec., 1893-Accepted, 20th Jan., 1834
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COMPLETE SPECIFICATION.
Improvements in Elastic Tyres for the Wheels of Velocipedes and
other Vehicles.
I, THÉODORE STERNÉ of 22 Rue d'Athènes, Paris, in the Republic of France,
Civil Engineer, 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 :-
My invention relates to a new kind of elastic tyre applicable to the wheels of
velocipedes and other vehicles, which whilst presenting the advantages of the
"pneumatic" tyre has none of its defects.
It is in fact very elastic but, being entirely metallic it incurs no risk of being
rendered usless or of being injured by contact with cutting bodies &c.; it requires
therefore no repairs on a journey; besides which it is excessively simple so that it
can be produced much cheaper than the pneumatic tyre.
My invention is illustrated in the accompanying drawings in which Figure 1 is
a cross section and Figure 2 is a side view of a portion of an elastic tyre and
Figure 3 is a side view of a portion of another tyre showing a slight variation.
and
This new tyre is made of a kind of split or spring tube applied to the felloe of
the wheel; this tube is formed by preference of a band or ribbon of sheet metal,
preferably of sheet steel, which is formed into a ring of the diameter of the wheel
curled transversely as shown in the drawing so as to obtain a hollow tube A
more or less open and having the appearance in section of rather more than one coil
of a spring but which has always this character that one edge a of the split is near
the line of fixture 6 to the felloe or spokes whilst the other edge a¹ is entirely
free and can consequently approach or recede from the edge a.
The edge a¹ is preferably lodged within the edge a as shown at Figures 1 and 2
but it may be external thereof as shown at Figure 3, whilst the free edge a¹ may
be towards the inner side or line of fixture of the tyre as shown at Figures 1 and 2
or it may be at the side of the tyre as shown at Figure 3, in which latter case it
may be either inside or outside of the edge a.
The felloe may consist of a simple ring either flat or curved to which the elastic
tyre A may be fixed by rivetting or otherwise or the elastic tyre may be used
without a felloe in which case the spokes will be fixed directly thereto.
It will be readily seen that the elasticity of the tyre is very great as on the one
hand it can bend until the free edge a¹ touch the edge a and on the other hand the
innate elasticity of the metal enables the tyre to flatten more or less under the
weight of the load and to immediately regain its original form exactly as in the case
of a pneumatic tyre.
I would remark that the elastic tyre can be made in one continuous piece or it can
be made in sections in any convenient manner.
I would further remark that without injury to the elasticity of the tyre, means
may be adopted for preventing the entrance of dust, mud &c. into the interior of

page_text: the tyre; this may be effected by adopting the construction shown at Figures 1 and 2
or an inflated india rubber tube may be introduced into the interior of the tyre so as
to nearly fill the internal space, or an external india rubber or other suitable
covering may be applied to the tyre so as to completely enclose the same but this
is not necessary to the proper action of the tyre.
I do not confine myself to any mode of attaching the elastic tyre to the felloe
or to the spokes as the case may be, nor to any special dimensions for the tyre.
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 elastic tyre for the wheels of velocipedes and other vehicles, consisting of a
kind of split or spring tube constructed in any convenient manner and fixed in
position near one edge of the split so as to leave the other edge absolutely free
substantially as herein shown and described.
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1630.
THÉODORE STERNÉ,
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents.