Improvements in Pneumatic Tyres for Wheels of Velocipedes and other Vehicles.
Year: 1899

page_text: Date of Application, 3rd Mar., 1899
Complete Specification Left. 4th Dec... 1899-Accepted 3rd Feb 1900
Date of Application, 3rd Mar., 1899
Complete Specification Left. 4th Dec... 1899-Accepted 3rd Feb. 1900
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Tyres for Wheels of Velocipedes and
other Vehicles.
I, ASPLAN BELDAM, of The Lodge, Acton, W., in the County of Middlesex,
Engineer, do hereby declare the nature of this invention to be as follows;-
-
This invention has reference to pneumatic tyres of velocipede and other wheels,
and more particularly to the kind of such tyres wherein the whole tyre is com-
prised of a plurality of tubes or separate parts.
According to this invention, a pneumatic tyre of the kind herein referred to
comprises a tube within a tube, both being in themselves complete tubes, and
independent of each other, and inflated separately in the usual way through a
valve connected with each of them, and independent of each other.
In normal use the inner of the tubes need not be inflated, and so being in
this uninflated condition, cannot get punctured by the puncturing of the outer
tube; but should the outer of the tubes become punctured, the inner tube can
be inflated, and thus the tyre is rendered still serviceable, so that the rider, in
such a case, has not to stop to repair the puncture or punctures, but after inflating
the inner tube, can proceed on his journey.
In some cases, there may be more than two tubes with their separate valves;
and in which case, when the outer becomes punctured, the next largest inner tube
will be inflated, and so on in the case of further puncturing taking place.
With regard to the inner tubes, the invention is not restricted as to the size
of same, but in any case they should be of such a size, that when the outer
tube is punctured and collapsed, and the inner tube or tubes inflated, it or they
will always stand or project above or beyond the periphery of the rim to such
an extent that the rider can proceed, and that the tyre will always be clear of
the outside of the rim, and so that the comfort of riding is not interfered with,
but retained.
According to a further part of this invention, both the outer and inner tubes
are jointed by a ferrule of suitable material, and lashings, or a screwed union.
or one having wedged lugs, or the like. By the use of the ferrule or union, no
adhesive solution is required, and the ends of both the outer tubes and inner tube
or tubes are joined and rendered air-tight; and at the same time a means is pro-
vided by which the tubes can be readily examined, repaired, and put in order.
and. ioined up again; hence repairs can be made with the greatest facility and
speed.
Or. in lieu of the above mode of fastening the tubes,. they may be jointed
together by adhering them in the usual way by a special solution which can readily
be dissolved when it is required to take the tubes apart, for examination or other-
wise.

page_text: Improvements in Pneumatic Tyres for Wheels of Velocipedes and
other Vehicles.
I, ASPLAN BELDAM, of The Lodge, Acton, W., in the County of Middlesex,
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:-
1
This invention has reference to pneumatic tyrestof velocipede and other wheels,
and more particularly to the kind of such tyres wherein the whole tyre is com-
prised of a plurality of tubes or separate parts.
According to this invention, fa pneumatic tyre of the kind herein referred to
comprises a tube within a tube, both being in themselves complete tubes and
independent of each other, and inflated separately in the usual way through a
valve connected with each of them, and independent of each other.
in
In normal use the inner of the tubes need not be inflated, and so being i
this uninflated condition, cannot get punctured by the puncturing of the outer
tube; but should the outer of the tubes become punctured, the inner tube can
be inflated, and thus the tyre is rendered still serviceable, so that the rider, in
such a case, has not to stop to repair the puncture or punctures, but after inflating
the inner tube, can proceed on his journey.
In some cases, there may be more than two tubes with their separate valves;
and in which case, when the outer becomes punctured, the next largest. inner tube
will be inflated, and' so on in the case of further puncturing taking place.
With regard to the inner tubes, the invention is not restricted as to the size
of same, but in any case they should be. of such a size, that when the outer
tube is punctured and collapsed, and the inner tube or tubes inflated, it or they
will always stand or project above or beyond the periphery of the rim to such
an extent that the rider can proceed, and that the tyre will always be clear of
the outside of the rim, and so that the comfort of riding is not interfered with,
but retained.
it
According to a further part of this invention, both the outer and inner tubes
may be jointed by a ferrule of suitable material, and lashings, or a screwed union,
of any known suitable kind. By the use of the ferrule or union, no adhesive
solution is required, and the ends of both the outer tubes and inner tube,.or
tubes are joined and rendered air tight; and at the same time a means is pro-
vided by which the tubes can be readily examined, repaired, and put in order,
and joined up again; hence repairs can be made with the greatest facility and
speed.
111
Or, in lieu of the above. mode of fastening the tubes, they may be jointed
together by adhering them in the usual way by a suitable solution..
417
Referring to the drawing. this shews: a tyre according to this invention in
cross section. In this tyre there is shewn within the tread or cover a, an inner
tube or lining b, and these rest and are carried within the arm c¹ in any suitable
known way.
.:
Within this inner tube 6 the supplemental inflated. tube c is.disposed, and these
tubes may be each provided with its own inflating valve, or a special, valve for
inflating both separately may be used. In use, the outer tube and cover, may
only be inflated under normal conditions; or both it and the separate inner
tube c may be inflated more or less; and when so inflated under normal circum-
stances, the inflation would only be carried to a partial extent, so that its outer
surface would stand some distance outside the edges or periphery of the rim c¹.

page_text: And then, if the outer case and tube became punctured, the inner tube would keep
the rim off the ground; after which it would then be further inflated to any extent
required. The use of the invention, however, is not restricted to any one par-
ticular mode, and may therefore be applied and used differentially, according to
what may be deemed desirable.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
-
A pneumatic tyre for the wheels of velocipedes and other vehicles, comprising
a plurality of air containing or holding tubes, one within the other, and adapted
to act or be used substantially as and for the purposes set forth.
Dated this 2nd day of December
1900
CHEESBROUGH & ROYSTON,
Applicant's Patent Agents, 15, Water Street, Liverpool.