Improvements in or relating to Pneumatic Tyres.
Year: 1896

page_text: Date of Application, 21st May, 1890
Complete Specification Left, 22nd Feb., 1897-Accepted, 1st May, 1897
Date of
2181 may.
Complete Specification Left, 22nd Feb., 1897-Accepted, 1st May, 1897
PROVISIONAL SPECIFICATION.
Improvements in or relating to Pneumatic Tyres.
We, GEORGE WATERS TARVER, Engineer, of 136 Great Saffron Hill, in the
County of Middlesex, ERNEST HENRY JONES, Pneumatic Tyre Manufacturer, of
same address, and JOHN DRING of 57 Chancery Lane, County of Middlesex,
Pneumatic Tyre Manufacturer, do hereby declare the nature of this invention to be
as follows:-
This invention relates to pneumatic tyres, particularly suitable for vehicle wheels,
and may be carried out in the following manner :-We use an air tube of ordinary
construction contained in a cover also of ordinary construction, and connect each
edge of this permanently with one part of a divided tyre, preferably of metal
adapted to be placed upon the wood wheel or the metal rim or tyre thereof, such as
is commonly employed in ordinary road vehicles..
The shape of the two-part rim and the manner of connecting the edge of the
cover to the rim may be greatly varied without departing from the spirit of the
invention. One way of effecting this however is as follows:-The two parts of
the rim are made so as to represent a plain channel rim, the edges of the rim
being preferably turned or rounded over so as not to damage the tyre, and the side
walls or circular flanges being carried down so as to embrace either the iron rim
of the wooden felloe or the wooden felloe itself, or both. The part rim may be
secured to the felloe or metal rim by bolts or other suitable devices, a convenient
way being to provide button-hole slots in the flanges of the rim, which would fit
over projecting studs or equivalent so as to enable the flange to be easily slipped
on, and when turned to one side, securely held, a set screw or other suitable means
being employed to prevent the rim turning back again.
The edge of the cover may be rivetted or bound with cord, wire etc. on to the
rim, or it may be secured by passing the wire through or over its edge and drawing
this up by right and left hand screw nut or other equivalent means, the rim
being provided with a special groove or channel, or not, according to requirement.
The two parts of the rim may meet in the centre or may be more or less widely
apart.
The rim may be as above described in two parts which may be joined together
without any special fastening to the ferrule or iron hoop of the wheel, any
convenient arrangement, such as will readily occur to an engineer being employed
for the purpose.
Or the wheel may be made in three parts, a plain hoop with detachable edges
connected by screws or other means, the edges of the cover being connected to the
movable portions as before. In any of these arrangements the rim or portions
thereof may be arranged so that no flange or equivalent projects upon the flat
periphery so that in case of puncture the wheel can be run upon the collapsed tyre
which would have a flat bed to bear on.
.
ixi 1000

page_text: Improvements in or relating to Pneumatic Tyres.
We, GEORGE WATERS TARVER, Engineer of 136 Great Saffron Hill, in the
County of Middlesex, ERNEST HENRY JONES, Pneumatic Tyre Manufacturer of
same address and JOHN DRING of 57 Chancery Lane, County of Middlesex,
Pneumatic Tyre Manufacturer 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:-
This invention relates to pneumatic tyres particularly suitable for vehicle wheels.
In the accompanying drawings
Figure 1 is a part elevation of a wheel for a self-propelled vehicle fitted with a
tyre according to this invention;
Figure 2 is a section on the line 2-2 of Figure 1;
Figure 3 is a view similar to Figure 1 showing an alternative construction of
wheel and tyre;
Figure 4 is a section on the line 4-4 of Figure 3.
Like letters indicate like parts throughout the drawings.
With reference first to Figs. 1 and 2, A is the rim of the wheel, B is the tyre
cover and C the air tube within it. Flanged rings A' A áre bolted or otherwise
secured by their flanges A to flanges A at opposite sides of the rim A so as to
form addition to the width of the latter, the edges of the flanges A of the
rings AA being so curved or otherwise formed as not to damage the tyre which
is secured to them in the manner hereinafter explained. In the example illustrated
button-hole slots A are formed in the flanges A³ of the rings A¹ A² to receive
headed studs or bolts D which project from the flanges A. The rings A¹ A can
be easily slipped over these studs and turned through a small angle so that they
may be securely held in place by the heads of the studs, which can be tightened up
to prevent either ring from accidentally turning back again; or separate set-screws
can be employed to secure the rings in place.
The edges B' of the cover B may be rivetted by rivets E to the parts A¹ A' of
the compound rim, which can be channelled as shown to receive them, the rivets
passing through bands B' between which and the flanges A³ the edge of the cover
is gripped. Or they may be secured to the flanged rings A' A by bands such
as B2 under the control of tension devices or retained in place by any other means
desired. It is found that the edges B₁ of the cover can be brought into such
close contact with the flanges A of the rings A¹ A' as to make a fluid tight joint
therewith; this being so the air tube C can be dispensed with and the cover B
employed as a tubeless tyre, in which case packing-rings F can be inserted in
grooves formed in the meeting faces of the flanges A³ A to prevent any leakage
of air between them.
In the alternative construction illustrated in Figs. 3 and 4 only the ring A* is
movable, the companion ring A' being made integral with the part A of the rim.
A "spider" constituted by arms A and a boss A connects the ring A³ with the
hub G, which the boss As encircles. G is a screwed portion of the hub G upon
which is a nut H by which the spider A' A" can be adjusted to cause the ring A'
to bear close against the adjacent side of the rim A. Packing F may be provided
in this instance as in the example previously described.
By slacking back the nut H the spider A7 A8 and the ring A' can be drawn
outward from the rim A sufficiently far to enable access to the interior of the
type B to be readily obtained through the space between them, the arms A7 of the
spider being at such distances apart that they offer no obstruction under these
circumstances.

page_text: The shape of the rim and rings and the manner of connecting the edge of the
cover to them may be greatly varied without departing from the spirit of the
invention; it is preferred that one edge of the cover should be permanently
connected to the rim or ring.
The rings A' A' may be joined together without any special fastening to the
felloe or iron hub of the wheel, any convenient arrangement such as will readily
occur to an engineer, being employed for the purpose.
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. The combination with the flexible portion B of a pneumatic tyre of flanged
rings such as A' A' constituting removable extensions of the rim of the wheel,.
substantially as and for the purpose described.
2. In a pneumatic tyre of the kind described the combination with a rim such
as A of one or more rings such as A' A' permanently connected to or forming part
of the tyre or cover the ring and rim being connected by pin and slot connections,
substantially as and for the purpose described.
3. In a pneumatic tyre the combination with the flexible portion such as B of
flanged rings A¹ A2, one fixed to or forming part of the rim A and the other-
connected to the wheel-hub substantially as and for the purpose described.
4. The combination and arrangement of parts constituting the complete pneumatic.
tyre substantially as and for the purpose described and illustrated in Figures 1
and 2 or 3 and 4 of the accompanying drawings.
مم
1007
GEORGE WATERS TARVER.
ERNEST HENRY JONES.
Boult & Wade,
Agents for the Applicants..