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

page_text: PROVISIONAL SPECIFICATION.
Improvements in or connected with Pneumatic Tyres for the
Wheels of Velocipedes and other Vehicles.
I, ASPLAN BELDAM, of The Lodge, Acton, W. London, Engineer, do hereby declare
the nature of this Invention to be as follows:-
This invention has reference more especially to that class of pneumatic tyres of
velocipede and other wheels which are commonly called "Single tube" tyres or
"Tubeless" tyres, and consist of a single band, strip, or piece, made up into the form
of tyre required, and when in the rim of the wheel to which they are applied, are
inflated by air under pressure; and when deflated, can quickly be wholly or partially
taken out of the rim, and access to the interior surface thereof readily obtained for
repairing of same when punctured, or other purpose.
According to one form of tyre under this invention, it consists of a casing or strip
which, when inflated, takes the usual form of pneumatic tyre, and having at one
edge a tube, which fits in a rim of grooved or channelled form adapted to receive
said tube, while the other edge is an ordinary simple end or edge having an enlarged
or bulbous formation, which, when in the rin, passes down between the fastening
tube and the rim, and fits in a secondary channel in the rim.
This fastening tube, in some cases, communicates with the interior of the main
tyre, which enables both tube and tyre proper to be inflated simultaneously, and by
one valve. In use, when the tyre is inflated, the fastening tube presses the edge of
the tyre which is plain, with the enlarged part, into the groove in the side of the
rim, and thus holds the whole tyre in the rim.
As a modification of this, the plain edge of the tyre is made without the bulbous
part; in which case this edge can be, in some cases, secured by suitable adhesive
material, to the rim.
The rim, in most cases, will be narrower between its edges or mouth than at the
body part, so as to obtain a better hold and fastening of the tube in the rim.
According to another modification, the edges of the tyre or case are of enlarged or
bulbous form, and fit in the corners or recesses at the bottom of the rim; while
above these there is a pneumatic tube which lies between the sides of the casing
just above the bulbous edges, and within the rim; and presses upon and holds the
bulbous edges in position. This construction and mode of holding the tyre in
position is also applied in some cases to a modification of tyre under this invention,
where, in lieu of the edges being of solid bulbous form, they consist of tubes, which,
together with the intermediate tube, and the main tyre, are inflated when the tyre
is inflated, they being in communication with each other by apertures for the
passage of air from one tube or part to another.
In another modification according to this latter construction, having the triple
fastening tube arrangement, there is provided between the two side fastening tubes
at the edges of the tyre, and third tube which rests upon them, a solid piece of
rubber or flexible material which fills a space between them.
-
According to another form of tyre under this invention, I provide at each edge of
the band or casing forming the tyre, a tube, which is adapted to be inflated with air;

page_text: whilst the rim is provided with grooves, corresponding with these tubes in which they
are placed, and when inflated hold the tyre in the rim; an aperture being provided
on the inside by which air in the tube proper and the fastening tube, has access. The
tyre in this case, is sealed by the fastening tubes,gripping the rim or pressing against
the sides of the channels in which they lie, making an air tight joint therewith. In
one modification according to this construction, one of these edges is fastened in the
rim, while the other is free to be taken out readily when deflated.
In another modification wherein the two edges of the tyre are provided with
pneumatic tubes, for holding it in place, these two tubes,. when in the channelled
rim, touch each other on their inner faces, and are pressed together by the pressure
of air within them; and so make an air tight closure of, the tyre. The rims in this
case will be narrower at the point near the edge thereof, or at the level of or near
the inner part of the fastening tube, than in the body portion thereof, as, above
explained; and they may communicate with the tyre proper by apertures as above
described, and adapted to be inflated through the valve or valves.
The band, casing or part forming the tyre, may be made of rubber reinforced by
canvas, or the like, or of any suitable material; whilst the tube at the edges as
referred to, may be made of rubber or rubber and other material, or other substance
according to the particular. requirements, and the functions which they have to
perform in the rim.
1000
Improvements in or connected with Pneumatic Tyres for the
Wheels of Velocipedes and other Vehicles.
I, ASPLAN BELDAM, of The Lodge, Acton, W. London, Engineer, do hereby declare
the nature of this Invention to be as follows:-
This Invention has reference more especially to that class of pneumatic tyres of
velocipede and other wheels which are commonly called "Single tube" tyres or
"Tubeless "tyres, and consist of a single band, strip, or piece, made up into the
form of tyre required, and when in the rim of the wheel to which they are applied,
are inflated by air under pressure; and when deflated, can quickly be wholly or partially
taken out of the rim, and access to the interior surface thereof readily obtained
for repairing of same when punctured, or other purpose.
Various modifications of single tube pneumatic tyres according to the invention
are illustrated in cross section in the accompanying drawings, and these will be
taken in the order of their figures.
The
One modification, shewn in Figure 1, consists of a casing a, which, when inflated,
takes the usual form of a pneumatic tyre. This casing has at one side a tubular edge
or tube b; while the other side has a simple solid enlarged or bulbous edge c.
rim is designated d, and consists of a channelled felloe having at one side, namely
that at which the edge c of the tyre comes, a groove e in which this edge fits. The
outer part of the case may be of canvas and rubber, or of any other suitable
material; and the edge c may consist of rolled canvas or a cord of any suitable kind,
suitably held in or attached to the case a. The tube a, normally, that is when not
inflated, may be conveniently of oval form, the major axis of which will be in line
with the case; and it may consist of rubber, so as to be extended and fill and fit
securely in the rim when inflated; or it may be made of canvas and rubber or the
like, of the desired size. The inflating valve f in the figure, is shewn entered
·

page_text: through the rim, and that side of the case. on which the part c comes; which part,
if desired; could be permanently; or semi-permanently adhered to the side of the
rim in situ, as it, is only absolutely necessary to have one edge removable,..for
inspecting.or repairing the tyre, and that is the tubular edge b.
In some cases, the interior of the case a, and the tube b communicate with each
other by a hole.or holes. x, thereby enabling both tube and tire to be inflated
simultaneously through the one valve f.
In action, when the tyre.is placed in the rim, and inflated, the fastening tube b
becomes extended, and presses upon the other edge of the tyre, and, pressure of the
two parts: one upon the other, makes an air tight joint.
In the modification shewn in Figure 2, there is shewn a tyre in which each of the
edges consists of a pneumatic tube; which fit in a: special rim having grooves or
channels.e at the sides, while the side portions of the rim are carried up in the
manner shewn, a considerable distance, making a comparatively deep rim; and the
inner part g is carried up inwards as shewn, to form the inside portions of
the channels e in which the tubes 6 lie and are inflated. These tubes are provided on
the inside with apertures x, by which connection between the tyre proper and the
tubes is formed, and by which one valve serves for the inflation: of all the parts to be
filled with air .under pressure. The air tight joint in this case is made by the
fastening tubes b, which, when inflated, press upon the sides of the channels in which
they lie, and make an air tight joint. In some cases, one of these edges may be
adhered in its position in the rim, or. similarly fastened, the other being free to be
taken out readily when deflated.
In the modifications shewn in Figures 3, 4, and 5; each of the sides of the case a
is provided with a pneumatic tube b, by which the tyre as a whole, is made air tight,
and kept in position in the rim. Referring to Figure 3; it will be seen that these
tubes lie in a comparatively deep rim d; and into one of these tubes the valve f for
inflating the tyre is introduced, and fastened, while the; other is provided with an
extension in the form of a flap b', which lies on the bottom of the rim, and enters
under a portion of the other tube. Both these tubes are provided with perforations
at x, by which the inflation of both the tubes and the body of the tyre is effected
through one valve. 'The rim d in this example, as also in Figures 4 and 5, and others
described, is narrower at the mouth, namely, across the outer edges, than the body
portion below within which the tubes b lie. In action, when, the tyre is inflated, the
two tubes b press at their inner edges one, against the other,, and at the same, time
the right hand tube presses onto the flap 61; and by these means an air seal, or air
tight joint, is effected, and the air under pressure in the tyre retained.
In this, as
in other cases under the invention, suitable viscous or semi-liquid substance which
is not harmful to the material of which the parts of the tyre are made, may be used
upon the parts at which the air tight joint or sealing is effected; for instance, soft
soap is a suitable substance for this purpose.
The modification shewn in Figure 4, is very similar to that shewn in Figure, 3,
except that the outside parts of the tubes b lie and fit.in the larger or extended sides
of the rim; also, in this case, no flap as b¹. is used, the air tight joint or sealing being
effected by the pressure of the tubes b-due to the air within them one upon the
other.
.. With respect to Figure 5, the rim d, in this modification, is largely of the kind
shewn in Figure 2, with the exception that the centre portion g in that Figure is
absent in this case; and the, two tubes b.press at their inner edges, directly. outo one
another when the tyre, is inflated and make the air tight joint. The width of, the
rim at its outer edges or mouth is less, as shewn, than the lower parts or grooves e in
which the tubes b rest.
Referring now to the modifications shewn in Figures 6, 7 and 8, the edges of the
: case a are of tubular or enlarged or bulbous form, and fit in the corners, or recesses
at the bottom of the rim d, which, practically, is of the general form of that shewn
in Figure 5. In, these cases, there is a pneumatic tube lying between the, sides of
}་
the casing, just above the bulbous or tubular edges. In Figure 6, this tube i (which

page_text: may be attached at one side to the casing, and one of the tubes b, gay the right hand
one,) presses upon the inside of the case a at the point it comes in contact with it,
as shewn, and also upon the other tube b. In the case shewn, all these tubes are
connected with each other, by apertures x, so that all the parts of the tyre may be
inflated by one valve f. The air tight joint, in this case, will be effected between the
three parts where the tubes or parts touch each other, namely, where i comes in
contact with the inside of the case a, and with one of the tubes b, and at the inside
faces where the tubes b touch each other. In Figure 7, the tyre, instead of being
provided with the pneumatic tubes at the edges, is shewn with two solid bulbous
edges c resting in the corners of the rim d. The internal pneumatic tube i in this
case presses on the inside of the case, and on one (or both) of the bulbous edges c
and makes the air tight joint; it being, preferably, but not necessarily, fastened at
the other side to the case, and, if desired, to the bulbous edge. In this case, the tyre
and the tube i are filled through the valve f which is introduced outside or above the
tube i.
In the modification shewn in Figure 8, the inner tube i does not touch the inside
of the case a at all, but is preferably attached to one of the tube edges b, say the
right hand one, and communicates by the passage x with it; and rests at the other
part upon the other tube. And between these two tubular edges b, there is a solid
rubber or flexible ring k. The valve in this case passes up through the ring, k, into
the tube i, and the tyre is inflated through these parts. The air tight joint is effected
by the contact between the tubes i and 6, and the ring k.
Referring to the modification shewn in Figure 9, this tyre is of the type shewn in
Figure 1, with the exception that the edge without the tube is simply a flap, resting
upon the inside of the rim, and preferably tapered as shewn; and against which the
face of the tube b presses. This edge is, in some cases, secured in the rim by
adhering it by any suitable adhesive; in which case the pressure of the tube b
against it does not serve to hold in the tyre at that side, but merely makes the air
tight joint there.
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 :-
1. In a single tube pneumatic tyre, a casing or body a, an air tube b on one side
of same, and a plain or corded edge at the other side, and a rim d, the said tube b
fitting in and filling the rim, and making an air tight joint with the other edge of
the tyre; substantially as set forth with reference to Figures 1 and 9 of the
drawings.
2. The single tube pneumatic tyre, with rim, constructed and operating particularly
as set forth with reference to and shewn in Figure 1, and Figure 9, respectively, of
the drawings.
3. A single tube pneumatic tyre having at each side a tubular edge b, and a rim d
of the kind described, in which the tubes b lie, said tubes abutting up against each
other as described, and making an air tight joint; substantially as set forth with
reference to and shewn in Figures 3 to 5.
4. The single tube tyre, with rim, having the parts constructed and operating
particularly as shewn in and described with reference to Figure 3; Figure 4; and
Figure 5 respectively, of the drawings.
5. In a single tube pneumatic tyre, a case having tubular or enlarged or bulbous
edges, at each side, fitting in a rim, and a pneumatic tube within and bearing upon
the said tubular or enlarged or bulbous edges; substantially as set forth.
6. In a single tube pneumatic tyre of the kind referred to in the preceding claim,
a pneumatic tube within the case of the tyre, which bears upon the tubular or
bulbous or enlarged edges, and also presses upon the sides of the case of the tyre;
substantially as set forth.
7. A single tube pneumatic tyre having tubular edges as described, fitting in a rim,
and a ring or strip of suitable material as specified, between said edges, and against

page_text: which they, or on: of them bears, or make, or assist in making, an air tight joint;
substantially as and for the purposes described.
8. The single tube pneumatic tyres, particularly as set forth with reference to and
shewn in Figure 6%; Figure 7; and Figure 8, respectively, of the drawings.
9. The single tube pneumatic tyre, with its rim, comprising casing a, two tubular
edges b, and rim d with the double channel e and sides carried up; as shewn in and
set forth with reference to Figure 2 of the drawings.
Dated this 30th day of September 1897.
CHEESBROUGH & ROYSTON,
15 Water Street, Liverpool, Applicant's Patent Agents.