Improvements in or connected with Pneumatic Tyres for the Wheels of Velocipedes and other Vehicles.
Year: 1897

page_text: Date of Application, 22nd Feb., 1897
Complete Specification Left, 22nd Nov., 1897-Accepted, 19th Feb., 1898
HYIDIONAL DITUIFICATION.
Improvements in or connected with Pneumatic Tyres for the Wheels
of Velocipedes and other Vehicles.
I, ASPLAN BELDAM, of The Lodge, Acton, London, W., 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 kinds of such tyres wherein the whole tyre is com-
prised of a plurality of tubes or separate parts.
In pneumatic tyres of the kind herein referred to, in which there is an outer
part or tube, on which the tyre normally runs, and forming the tread of it, and two
tubes on the edges of the cover or tyre, fitting in the rim of the tyre, the side tubes
are so made and arranged in relation to the rim, that their outer part will, when
inflated, extend or stand in a position beyond or outside the rim, but of course
within or on the inside of the tyre. This extension beyond the rim edge is of a
substantial measurement, and by it, when the tyre gets punctured at the outer part,
the inner tube will form a support to the outer part, and the rider can still proceed
upon the cycle or vehicle, thus rendering it unnecessary to repair the tyre when
it first becomes punctured.
In some cases, in lieu of having two tubes at the sides, fitting in the rim, a
triple arrangement or multiple arrangement may be employed, and superposed
one upon the other, so that while the inner, say a pair of these tubes do not project
beyond the rim, within the tyre or outer cover, the tube above or upon this pair,
does project beyond the edge; so that if the outer cover or tyre becomes punctured,
and the air escape, the tubes within will support the rider and keep the rim off
the road, so that he can continue the journey.
These several tubes or parts of a tyre may be inflated and deflated with separate
valves, or a compound valve, by which when one becomes punctured and the air
escapes from one of the tubes or parts, the other tube or part remains full and sealed.
Dated this 19th day of February 1897.
0 Improvements in or connected with Pneumatic Tyres for the Wheels
of Velocipedes and other Vehicles.
I, ASPLAN BELDAM, of The Lodge, Acton, London, W., Engineer, do hereby
declare the nature of this invention, and in what manner the same is to be per-
Price 8d7

page_text: formed, to be particularly described and ascertained in and by the following
statement-
This invention has reference to pneumatic tyres of velocipede and other wheels,
and, more particularly, to the kinds of such tyres, wherein the whole tyre is com-
prised of a plurality of tubes or separate parts.
In pneumatic tyres of the kind herein referred to, in which there is an outer
part or tube, on which the tyre normally runs, and forming the tread of it, and two
tubes on the edges of the cover or tyre, fitting in the rim of the tyre, the side tubes
are so made and arranged, in relation to the rim, that their outer part. will, when
inflated, extend or stand in a position beyond or outside the rim, but, of course,
within or on the inside of the tyre. This extension beyond the rim edge is of a
substantial measurement, and by it, when the tyre gets punctured at the outer part,
the inner tube will form a support to the outer part, and the rider can still proceed
upon the cycle, or vehicle, thus rendering it unnecessary to repair the tyre when
it first becomes punctured.
In some cases, in lieu of having two tubes at the sides, fitting in the rim, a
triple arrangement, or multiple arrangement, may be employed, and superposed
one upon the other, so that, while the inner, say a pair of these tubes do not project
beyond the rim, within the tyre or outer cover, the tube above or upon this pair,
does project beyond the edge; so that if the outer cover or tyre becomes punctured,
and the air escape, the tube within will support the rider, and keep the rim off
the road, so that he can continue the journey.
These several tubes or parts of a tyre may be inflated and deflated with separating
valves, or a compound valve, by which, when one becomes punctured, and the air
escapes from one of the tubes or parts, the other tube or part remains full and sealed.
Examples of tubeless tyres, according to this invention, are given in the accom-
panying drawings. In all of these figures or modifications, a is the outer case or
tube proper, and d the rim.
Referring to Figure 1, a single tube b fits in the rim d, and is adapted to hold
the tyre in its place; and its outer surface projects beyond the edge of the rim d
a considerable distance, as shewn. One side of the case a is connected to this
tube, and the other side is at its edge provided with a bulbous part c, which fits
in the rim, as shewn, and is pressed upon and kept therein by the pressure of
air in b.
In the modification shewn in Figure 2, each edge of the case a is provided with
a tube b; and these tubes fit in recesses or channels e in the rim d at either side, and
their outer surface projects beyond the edge of the rim a considerable distance,
as shewn.
In the modification in Figure 4, the tyre is provided at each edge with a tube b,
and these tubes bear upon one another at the centre, where they make an air
tight joint. The rim d'is of single channel form, as shewn, and holds the tubes b
in position; and the outer parts of these tubes project beyond the edges of the
rim a considerable extent as shewn.
In the modification shewn in Figure 4, the edges of the tyre case a are in the
form of solid bulbous rings c; and, between them, a tube i is employed, which,
when inflated, keeps these edges in the rim d. In this case, the central inner
tube stands outside the edges of the rim a considerable distance, as shewn.
Figure 5 shews a modification in which the case a has tubular edges b, which
lie wholly within the rim; and, in conjunction with one of them (or separate
therefrom), there is a central inner tube i, which, at its outer surface, projects, as
shewn, a considerable distance outside the edges of the rim. In this case, a solid
filling strip is employed in the space between the tubes b and i.
The tyre shewn in Figure 6 is identical with that shewn in Figure 1, with the
exception, that the free edge of the case a is without the bulge or bulbous
formation; and, like Figure 1, its tube b projects beyond the edge of the rim, to
the same extent as in that instance.
In all these cases, the tubes 6 and i, which project, are sealed tubes, and do not

page_text: communicate with the tube or air space of the tyre proper; and they also serve to
hold the tyre in the rim. And, in action, if the outer case becomes punctured, the
tube or tubes bor i, as the case may be, which project beyond the edge of the rim,
will form a support to the outer part, and the rider can still proceed upon the
cycle or vehicle, and so rendering it unnecessary to stop and repair the tyre on the
road.
The different parts of the tyre may be inflated and deflated with separate valves,
or a compound valve. A compound valve suitable for this purpose is set forth in
the application for Patent No. 4704 of 1897.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, it is to be stated, with regard
to the general form, or the elements of which the tyres are composed, that they
form, per se, no part of the present invention, but what is claimed is:-
-
1. A pneumatic tyre of the type herein referred to, comprising an outer case,
and an inner tube or tubes fitting or lying in a channelled or grooved rim, the outer
surface or surfaces of which project beyond the edge of the said rim; substantially
as and for the purposes set forth.
2. The single-tube pneumatic tyres, having the special formation and arrange-
ment or disposition of parts, particularly as set forth with reference to, and as
shewn in the drawings.
CHEESBROUGH & ROYSTON,
Applicant's Patent Agents, 15 Water Street, Liverpool.