Improvements in and relating to Elastic Tyres for Wheels.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in and relating to Elastic Tyres for Wheels.
I BERNARD HIPPOLYTE CHAMEROY of Vesinet (Seine et Oise) France, Engineer, do
hereby declare the nature of this invention to be as follows:---
My Invention relates to elastic tyres for wheels so constructed that all the pressure
and wear are taken on metal, which protects the elastic material which may be
caoutchouc or metallic springs from injury.
For this purpose outside the elastic tyre, I place a number of metallic segments
each free to move inwards and nearly touching each other, thus constituting a
complete metallic tyre. In order to prevent the segments from becoming detached
from the wheel they are made with outwardly projecting lips at their inner side
engaging within inwardly projecting lips on the sides of the rim, one of which sides
may be in the first place bent outwards to admit the lips of the segments, and then
bent inwards when the segments are in position. Or the two sides of the rim may
be made separate and then rivetted or bolted together after the segments are in
place.
According to a modification, each segment has a notch at each end, to admit a pin
which is passed through the two sides of the rim, the notches being of such depth as
to allow the segments to be pressed inwards compressing the elastic tyre which may.
have recesses in its periphery receiving studs projecting inwards from the segments
so that they are prevented from moving endways. The segments may have sides
extending inwards over the run these sides having inwardly projecting lips engaging
within the edges of the rim.
The segments and rim may be attached together by the caoutchouc tyre being
moulded and curved in position between them and engaging inwardly projecting lips
of the segments and inwardly sloping studs on the rim. In all cases the seginents.
are free to be moved more or less inwards when they are acting as the treads.
Dated this 12th day of October 1896.
ABEL & IMRAY,
Agents for the Applicant.
I, BERNARD HIPPOLYTE CHAMEROY, of Vesinet (Seine et Oise), France, 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 elastic tyres for wheels so constructed that all the pressure

page_text: and wear are taken on metallic segments which protect the elastic material, such as
caoutchouc. I shall describe the arrangement and fixing of the metallic segments
and the elastic material referring to the accompanying drawings.
Fig. 1 is a transverse section and Figure 2 is a part longitudinal section of one
construction of tyre according to my invention. A is the rim of trough section with
inwardly projecting lips at the extremities of the sides. B is the elastic material and
C the metallic segments, which can be introduced by bending outwards part of one
of the sides of the rim as indicated by the dotted lines in Fig. 1 so that the
outwardly projecting lip c of the segment can pass the inwardly projecting lip of the
rim. After the segments are all introduced the side of the rim is bent back to its
proper position. The spokes may be fixed at one end to a rib A', the other end being
screwed into the nave or held in the nave by a nut, or the rim may be made as shewn
in Figure 3 with bosses to receive the nuts that encircle the ends of the spokes.
The elastic material B may be tubular as shewn in Fig. 3. As shewn in Fig. 4, the
rim is made in two parts having ribs bolted together. The rib Al has also holes for
the bent ends of the spokes as in Fig. 1, and the other rim has notches a¹ to admit
the nuts for the spokes. As shewn in transverse and longitudinal sections Fig. 5, the
sides a a of the rim have holes to receive pins which pass through notches at the
ends of the segments C, these notches being of sufficient depth to allow of
the segments being pressed inwards. Fig. 6 shews the rim fixed on the external face
of wooden felloes; Fig. 7 shews the two sides a bolted to the sides of wooden felloes,
and the segments C provided with studs c engaged in recesses of the elastic material
so as to prevent displacement of the segments. As shewn in Figs. 8 and 9, the
segments are of trough section their sides a having inwardly projecting lips engaging
under the edges of the rim. Fig. 10 shews a similar construction, the elastic
material being made of two rings of circular section, and the rim itself consisting of
a middle rib with two rings of right angle section bolted on it. Fig. 11 shews a
metal rim A with inclined studs projecting from it, a ring of caoutchouc B and
segments C with inwardly projecting screws and sides a having inwardly projecting
lips, the whole put together while the caoutchouc is moulded in position.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed, I declare that what I claim is :-
1. An elastic tyre comprising a rim having sides inade with inwardly projecting
lips, an elastic ring contained in the rim and metallic segments having outwardly
projecting lips engaged within the lips of the rim substantially as described with
reference to Figs. 1, 2, 3, 4, 6 and 7.
2. An elastic tyre comprising a rim with holes through its sides, an elastic ring
contained in the rim, and metallic segments having their ends notched to receive
pins passed through the sides of the rim, substantially as described with reference to
Figure 5.
3. An elastic tyre comprising segments having sides with inwardly projecting lips,
an elastic ring within the segments and a rim having its edges engaged by the lips
of the segments, substantially as described with reference to Figs. 8, 9 and 10.
4. An elastic tyre comprising a rim an elastic ring and metallic segments secured
together substantially as described with reference to Figure 11.
2008