Improvements in or relating to Pneumatic-tyred Wheels.
Year: 1896

page_text: Date of Application, 14th May, 1896
Complete Specification Left, 15th Mar., 1897-Accepted, 17th Apr., 1897
PROVISIONAL SPECIFICATION.
Improvements in or relating to Pneumatic-tyred Wheels.
We, HENRY JELLEY of 1 Rothesay Terrace, Coventry in the County of Warwick,
Manager, and HENRY JOHN LAWSON of 40 Holborn Viaduct in the County of
Middlesex, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to pneumatic-tyred wheels, and may be carried out in the
following manner :-The wheel may be made in any convenient manner, but where it
is intended to be used to carry heavy weights as when used as a wheel for vehicles-
autocars for example-it may be formed of cast or stamped metal with any desired
form of boss and spokes, the latter being connected with or forming part of a ring in
the form preferably of a flat or curved faced hoop. The pneumatic tyre may consist
of an air tube and an outer cover, the edges of which are adapted to be gripped or to
pass between the beforementioned hoop or centre portion of the wheel rim, and two
side flanges which are adapted to be pressed against the hoop.
The means adopted of pressing the flanges on to the centre hoop are as follows:-
In connection with the centre hoop conveniently upon the spokes of the wheel are
brackets, grooved lugs or equivalent within which the inner edge of the flange fits,
and is adapted to turn. Upon this flange at suitable intervals are inclined planes so
arranged that when the ring flange is turned, the thicker portion of the wedge formed
by the inclined plane engages the beforementioned lug, forcing the flange against the
centre portion of the wheel rim. To effect the turning of the flange we may pivot a
screw which would pass through a lug or bracket upon the flange having nuts upon
each side of it so that according as the nuts were turned the flange would be turned in
relation to the central portion of the wheel rim so as either to tighten or slacken its
grip upon the edges of the tyre. An alternative arrangement would be to have a lug
projecting from the flange and a set screw in that, taking a bearing upon the rim or
spoke. More than one of these tightening devices may be employed.
In order to prevent any possibility of the cover slipping out we prefer to provide it
with enlarged edges, and in order to make these easily handled and readily detachable
they preferably are extensible. A convenient way of making them is to take a
helically wound coil of wire inside which may be a rubber cord and envelope these in
the canvas forming the lining of the cover and thus form an enlarged edge to the
cover. The before described mechanism may be employed upon both sides of the
wheel, one complete set to each flange.
We prefer to form the flange with a groove in it to receive the enlarged edge of
the cover, and when the flange is adapted to fit against the rim or stops thereon the
cover will be held against the air pressure solely by the bead which would be partly
in the recess in the flange and partly under the rim of the wheel; in this case the
edge of the cover would not be gripped between the rim and the flange at all. As
the lugs upon the spokes preferably overlap a portion of the flange the latter may be
cut away where necessary to allow it to be inserted so as to come underneath
the lugs.

page_text: COMI LELE DI DUIFICATION
Improvements in or relating to Pneumatic-tyred Wheels.
We, HENRY JELLEY of 1 Rothesay Terrace, Coventry, in the County of Warwick,
Manager, and HENRY JOHN LAWSON of 40 Holborn Viaduct, 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:-
This invention relates to pneumatic-tyred wheels, and may be carried out in the
following manner :-The wheel may be made in any convenient manner, but where it
is intended to carry heavy weights as when used as a wheel for vehicles-autocars for
example-it may be formed of cast or stamped metal with any desired form of boss
and spokes, the latter being connected with or forming part of a ring in the form
preferably of a flat or curved faced hoop. The pneumatic tyre may consist of an
air tube and an outer cover, the edges of which are adapted to he gripped or to
pass between the beforementioned hoop or centre portion of the wheel rim, and two
side flanges which are adapted to be pressed against the hoop.
The means adopted for pressing the flanges on to the centre hoop are as follows:-
In connection with the centre hoop-conveniently upon the spokes of the wheel-
are brackets, grooved lugs or equivalent within which the inner edge of the flange
fits, and is adapted to turn. Upon this flange at suitable intervals are inclined
planes so arranged that when the ring flange is turned, the thicker portion of the
wedge formed by the inclined plane engages the before mentioned lug, forcing the
flange against the centre portion of the wheel rim. To effect the turning of the ring
we may pivot upon the body of the wheel, a screw which would pass through a
lug or bracket upon the ring having nuts upon each side of it so that according
as the nuts were turned the ring would be turned in relation to the central portion of
the wheel rim so as either to tighten or slacken its grip upon the edges of the
tyre. An alternative arrangement would be to have a lug projecting from the flange
and a set screw in that, taking a bearing upon the rim or spoke. More than one of
these tightening devices may be employed.
In order to prevent any possibility of the cover slipping out we prefer to provide it
with enlarged edges, and in order to make these easily handled and readily detachable
they preferably are extensible. A convenient way of making them is to take a
helically wound coil of wire inside which may be a rubber cord and envelope these in
the canvas forming the lining of the cover and thus form an enlarged edge to the
cover. The before described mechanism may be employed upon both sides of the
wheel, one complete set to each flange.
We prefer to form the ring with a groove in it to receive the enlarged edge of
the cover and when the ring is adapted to fit against the rim or stops thereon the
cover will be held against the air pressure solely by the bead which would lie partly
in the recess in the ring and partly under the rim of the wheel. As the lugs upon
the spokes preferably overlap a portion of the ring the latter may be cut away where
necessary to allow it to be inserted so as to come underneath the lugs.
In the accompanying drawings:-
Figure 1 is a side view of the wheel and tyre partly broken away.
Figure 2 is a section on the line 2-2 of Figure 1;
Figure 3 is an enlarged and broken perspective view showing the details of
attachment of the flanged ring to the rim of the wheel.
Like letters indicate like parts throughout the drawings.
A is one of the spokes and B the rim of the wheel shown cast in one piece.
C is a bracket or grooved lug upon the spoke A: there is such a lug upon each
spoke, the grooves C being upon the sides of the lugs nearest the rim as shown

page_text: plainly in Figure 2. D is a flanged ring formed to fit against the rim, the inner
edge being so shaped that it fits into the grooves C¹ of the aforesaid lugs. At
suitable intervals semi-circular pieces D¹ are cut out of the inner edge of the ring D
so as to allow it to pass over the grooved lugs as shown in Figure 1.
E is the outer cover of the tyre which has enlarged edges E' which lie in a groove
at each ring D and against the rim, (Figures 2 and 3).
The means adopted for tightening up the ring between the lugs and rim are as
follows:-A bracket F is bolted onto the ring D and carries an eyebolt H, and
on one of the spokes is pivotted the bolt K by means of the screw bolt K'. The
ring D is placed upon the rim when the tyre is in place and the pivotted bolt K
is passed through the eyebolt H and the nut K2 is screwed on to it. Upon the
inner edge of the ring D are the inclined plaues or wedges D2, so arranged that
when the ring is turned round one wedge D' comes under each bracket C. By
screwing up the nut K the wedges D engage the lugs C forcing the ring D
against the rim. The nut K³ is for locking the arrangement and also for loosening
the ring; one or more of these tightening arrangements may be used for each
ring D.
As mentioned before the outer cover of the tyre E has enlarged edges, and in
order that these may be easily handled they are preferably extensible. A convenient
way of making them is as follows:-E is a rubber cord upon which is wound
helically a coil of wire E' enveloped in the canvas forming the lining of the cover.
The above mentioned mechanism is employed on both sides of the wheel one
complete set on each side.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what
we claim is :-
1. In a pneumatic tyred wheel the combination with the rim B of flanged rings
such as D carrying inclined planes D2 to engage brackets or lugs C upon the
spokes by circumferential movement of the rings, substantially as and for the
purpose described.
2. In a pneumatic tyred wheel the combination with a rim of flanged rings
such as described, and a tyre cover with thickened edges adapted to be gripped
between the rim and the flanged rings by circumferential movement of the latter
substantially as described.
3. The complete ring D D E substantially as and for the purpose described and
illustrated in the accompanying drawings.
4. The complete pneumatic-tyred wheel substantially as described and illustrated in
the accompanying drawings.
5. The edge E E for a pneumatic tyre substantially as described and illustrated in
the accompanying drawings.
Dated this 19th day of Manach 1907
HENRY JELLEY.
Boult & Wade,
Agents for the Applicants.