Improvements in Tyres for Velocipede and other Road Wheels.
Year: 1898

page_text: "
Date of Application, 21st UCL., 1896
Complete Specification Left. 15th July, 1899-Accepted, 26th Aug., 1899
"
Date of Application, 21st UCL., 1898
Complete Specification Left, 15th July, 1899-Accepted, 26th Aug., 1899
PROVISIONAL SPECIFICATION.
Improvements in Tyres for Velocipede and other Road Wheels.
We, ARTHUR CHARLES MOORE, of 220, Anerley Road, Anerley, S.E., Engineer,
and GEORGE BRANDON, of 2, Idonia Street, Deptford, S.E., Engineer, do hereby
declare the nature of this invention to be as follows:-
According to our invention we construct solid caoutchouc tyres with a series
of spherical or otherwise shaped cavities, formed therein by moulding and
situated at slight distances apart all round the tyre. These cavities are preferably
filled with air at atmospheric pressure, so that in the event of a puncture
penetrating into one or more of the cavities this would have no detrimental
effect on the tyre.
Such tyres may be conveniently produced by making them in halves, each
half having a series of hemispherical cavities formed in its flat face, so that when
the two halves are secured together and the whole is then vulcanised, the enclosed
cavities are produced as described, but we do not bind ourselves to this mode
of producing the tyres.
The caoutchouc employed for the tyres may either be of the ordinary dense
kind, or the so called spongy or cellular caoutchouc may be used, in which case
this is enclosed in an outer covering of ordinary caoutchouc.
In this case also, we may introduce into the cavities, before the two halves
of the tyre are cemented together, hollow balls of ordinary caoutchouc fitting
the cavities, which balls may or may not be charged with air at a slightly higher
pressure than that of the atmosphere before being inserted in the cavities.
Such balls may also be introduced into the cavities of tyres made of ordinary
caoutchouc.
Doted this 21st day of October 1898.
ABEL & IMRAY,
Agents for the Applicants.
Improvements in Tyres for Velocipede and other Road Wheels.
We, ARTHUR CHARLES MOORE, of 220, Anerley Road, Anerley, S.E., Engineer,
and GEORGE BRANDON, of 2, Idonia Street, Deptford, S.E., 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:
According to our invention we construct solid caoutchouc tyres with a series
of spherical or otherwise shaped cavities, formed therein by moulding and

page_text: situated at slight distances apart all round the tyre. These cavities are preferably
filled with air at atmospheric pressure, or a little above such pressure, so that
in the event of a puncture penetrating into one or more of the cavities this
would have no detrimental effect, on the other cavities and on the tyre generally.
Such tyres may be conveniently produced by making them in halves, each
half having a series of hemispherical cavities formed in its flat face, so that when
the two halves are secured together and the whole is then vulcanised, the enclosed
cavities are produced as described; but we do not bind ourselves to this mode
of producing the tyres.
The caoutchouc employed for the tyres may either be of the ordinary dense
kind, or the so called spongy or cellular caoutchouc may be used, in which case
this is enclosed in an outer covering of ordinary, caoutchouc.
In this case also, we may introduce into the cavities, before the two halves
of the tyre are cemented together, hollow balls of ordinary caoutchouc fitting
the cavities, which balls may or may not be charged with air at a slightly higher
pressure than that of the atmosphere before being inserted in the cavities.
Such balls may also be introduced into the cavities of tyres made of ordinary
caoutchouc.
11 -11
Figs. 1 and 2 of the accompanying drawings shew's portions of the half tyres
constructed according to our above described invention; Fig. 3 shews a cross
section at X X Fig. 1, and Fig. 4 shews a perspective view of part of the complete
tyre.
1:!
We form two caoutchouc half tyres A A each having a series of hemispherical
cavities B moulded therein. These two half tyres are then solutioned or cemented.
together to form the complete tyre as shewn at Fig. 4, the hemispherical cavities
of the two halves being thus made to constitute complete spherical cavities as
shewn, which cavities are consequently filled with air at atmospheric, or a little
above atmospheric pressure. As before stated, there might be inserted into
the cavities B before cementing them together, caoutchouc balls of a correspond-
ing size which may be charged with compressed air. Or such balls may be.
imbedded in the plastic caoutchouc mass as the complete tyre is being formed
this being afterwards cured in the usual manner.
The tyre thus produced is sprung into a trough shaped wheel rim of corre-
sponding form, and in order to prevent the tyre from being inadvertently sprung
out of the rim laterally in riding, owing to its elastic nature, we prefer to reduce
its elasticity somewhat by cementing or solutioning on to the inner periphery
of the tyre a strip of canvas as indicated by dotted lines at C Fig. 4, whereby
while the tyre retains sufficient elasticity to be sprung into the wheel rim, it
cannot be sprung out again without the application of some force. For securing
such tyres in the rim they may be cemented thereto by a suitable cement, and to
facilitate their adhesion the rim has preferably a strip of canvas cemented to
it in the first instance, and if necessary, also secured by a binding wire. For
further facilitating the securing of the tyre in position on the rim we in some
cases make the tyre with a projecting bead on its inner side, as shewn at D in
the modified section at Fig. 5, the rim of the wheel being made with a corre-
sponding groove for this bead to fit into.
We do not however claim these arrangements for securing the tyre in the rim
as part of our present invention.
It will be readily understood that the cavities formed in the tyre may be of
other forms besides spherical.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that what
we claim is :-
1. Solid caoutchouc wheel tyres having spherical or otherwise shaped, cavities
formed therein at distances apart by moulding, substantially as herein described.
2. Caoutchouc wheel tyres having cavities formed therein by first forming

page_text: half tyres with hemispherical cavities moulded therein and then solutioning
or cementing the two half tyres together, substantially as described.
3. In combination with caoutchouc tyres having cavities formed therein, such
as referred to in the first and second claims, the use of hollow caoutchouc balls,
imbedded in the said cavities substantially as described.
Dated this 15th day of July 1899
ABEL & IMRAY,
Agents for the Applicant