Improvements in or relating to Pneumatic Tyres.
Year: 1895

page_text: Date of Application, 11th Oct., 1895
Complete Specification Left, 13th July, 1896-Accepted, 22nd Aug., 1896
PROVISIONAL SPECIFICATION.
Improvements in or relating to Pneumatic Tyres.
1, JOHN DRING, of 57 Chancery Lane, in the County of Middlesex, Tyre
Manufacturer, do hereby declare the nature of this invention to be as follows:-
This invention relates to the means for securing pneumatic tyres upon their rims
and may be carried out in the following manner.
I provide in one or both edges of the cover two or more, preferably three, rings
or hoops, conveniently of wire, formed as coils of the same piece of wire arranged
in a well-known manner so that by contracting one or more of the rings another
can be enlarged and thus easily passed over the edge of the wheel rim. Hitherto
a difficulty in fastenings of this type has arisen in the following manner.
If a
deep rim or a rim with a deep channel were used it made it comparatively easy to
get the cover on and off the rim because of the greater amount of play available
for the rings, but such a rim was dangerous in consequence of the possibility of
the wires in one portion of the tyre moving to the lowest portion of the channel
so that there was the possibility of the other part escaping over the other edge of the
rin and the tyre coming off. On the other hand if a shallow rin were used it was
difficult to get the wires over the edge of the rim. These difficulties I overcome
in the following manner.
First, employ a deep channelled rim of any suitable section, but preferably with
shoulders upon which the wires can rest. If desired these shoulders may be
recessed so as to form hollow channels to receive the wires by this mos ensure
the easy removal of the cover when required. Second, I provide a tab, fold or
equivalent upon the cover or its lining so arranged as to lap round the exposed
portions of the wire and being nipped against the edge of the rim or otherwise held,
it would prevent the wire slipping to the centre of the rim. Another way of
effecting the same thing would be to have a short sleeve through which the wires
pass which can be moved along as required and may be provided with a hook or
stud to pass through a suitable opening in the rim or otherwise engage with the
edge of the rim. Or instead of as hitherto allowing the whole of one of the rings
or coils to be outside the cover or the pocket or pipe in the edge thereof in which
the wires lie, or even half a coil, I allow only a small portion perhaps a quarter of
only one of the circles to be outside the pocket by which means although I can
easily manipulate the rings for applying or removing the cover there is much less
likelihood of the wires slipping to the centre of the rim.
In applying or removing this cover it is not necessary to force the wires back
into the pocket at the edge of the cover but merely to pull out the exposed portion
aud afterwards lift the cover when the exposed portion has passed the rim in
removing it and to reverse this process in applying the cover.
Dad thin 19ah
1005
BOULT & WADE,
Agents for the Applicant.

page_text: I, JOHN DRING of 57 Chancery Lane, in the County of Middlesex, Gentleman,
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 insention relates to means for securing pneumatic tyres upon their rims and
be carried out in the following manner.
may provide in one or both edges of the cover two or more rings or hoops,
conveniently of wire, formed as coils of the same piere of wire arranged in a well-
known manner so that by contracting one or more of the ring another can be
cularged and thus easily passed over the edge of the wheel rim. Hitherto a
difficulty in fastenings of this type has arisen in the following manner.
If a deep
rita or a rim with a deep channel were used it made it comparatively easy to get
the cover on and off the rim because of the greater amount of play available for
the rings, but such a rim was dangerous in consequence of the possibility of the
wires in one portion of the tyre moving to the lowest portion of the channel so that
there was the possibility of the other part escaping over the other elge of the rim
and the tyre coming off. On the other hand if a shallow rim were used it was
difficult to get the wires over the edge of the rim. These difficulties. I overcome in
the following manner :-
First, 1 employ a deep elanuelled rim of any suitable section, but preferably
with shoulders upon which the wires can rest. If desired these shoulders may be
so as to form hollow channels to receive the wires-by this means I ensure
the easy removal of the cover when required.
recessed
Second, I provide a tab, fold or equivalent upon the cover or its lining so
arranged as to lap round the exposed portions of the wire and being nipped against
the age of the rim or otherwise Leld, it would prevent the wire slipping to the
centre of the rim. Another way of effecting the same thing would be to have a
short sleeve through which the wires pass which can be moved along as required
and may be provided with a hook or stud to pass through a suitable opening in the
rim or otherwise cugage with the edge of the rim. Or instead of as hitherto
allowing the whole of one of the rings or coils to be outside the cover or the pocket
or pipe in the edge thereof in which the wires lie, or even half a coil, allow only
small portion perhaps a quarter of only one of the circles to be outside the
pocket by which means although I can easily manipulate the rings for applying or
removing the cover there is much less likelihood of the wires slipping to the centre
of the run.
In applying or removing this cover it is not necessary to force the wires back
into the pocket at the edge of the cover but merely to pull out the exposed portion
and afterwards lift the cover with the exposed portion which has passed the rim in
removing it and to reverse this process in applying the cover.
In the accompanying drawings
Figure 1 is a perspective view of a portion of a tyre cover constructed in
accordance with oue form of my invention.
Figure 2 is a transverse section of the complete tyre showing the form of rim
preferred.
Figure 3 shows a transverse section of a modification.
Like letters indicate like parts throughout the drawings.
The tyre cover A has coils of wire 13 running in pockets A 1 in its edges. The
wires Btorm coils of the same piece, a small portion B1 lying outside the pocket
to admit of the manipulation of the wires for removal of the tyre in the well-known
mauner. A tab or fold C is attached to the cover A in such a manner as to lap

page_text: round the exposed portion 13 1 of the wires, this tab being nipped between the edge
of the cover and the rin: so as to prevent the exposed portion of the wire slipping
into the central channel of the rim. To assist in preventing the slipping of the
exposed portion of the wire as just described, I prefer to form my rim D with
lateral shoulders D1 as shown in Figure 2. The section illustrated in Figure 2
shows on one side that portion of the tyre where one wire lies inside the pocket A 1
while the other lies outside and is surrounded by the tab C which is nipped between
the wires and the rim while on the other side both wires lie in the pocket A 1. If
preferred a longer portion of the wire B may be exposed and more than one tab
may be employed to retain them in position.
In the modification shown in Figure 3 the rim D is constructed with lateral
channels D2 in which the edges of the cover lie, the tab C being in this case
dispensed with, as the channels D 2 prevent the exposed portion of the wire B
from slipping into the central channel of the rim D.
If desired a tab may be combined with this form as an additional safeguard.
My invention though shown as applied to a pneumatic tyre comprising a cover
and a separate air tube, may equally well be adapted to a single tube tyre, in
which case flaps carrying the wires B and provided or not with a flap such as C,
are attached to the sides of the tube, so that the edges may lie on the shoulders Dĺ
or in the channels D 2 according to the form of rim employed.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In a pneumatic tyre the combination with a cover or tyre having coils of wire
in its edges of a tab or fold arranged to lap round the exposed portions of the wire
substantially as and for the purpose described.
2. In a pneumatic tyre the combination with a cover or tyre having coils of
wire in a pocket in its edges and a small portion of this wire exposed, of a tab
such as C and a rim with shoulders such as D1 substantially as and for the
purpose described and illustrated in the accompanying drawings.
3. The combination and arrangement of parts constituting the complete
pneumatic tyre and rim substantially as described and illustrated in Figure 2 or
Figure 3 of the accompanying drawings.
Dated this 11th day of July 1896.
JOHN DRING.