Improvements in Inflatable Tyres for the Wheels of Velocipedes and other Road Vehicles.
Year: 1896

page_text: Date of Application, 27th May, 1890
Complete Specification Left, 1st Mar.. 1897-Accepted, 1st May, 1897
Date of Application, 27th May, 1890
Complete Specification Left, 1st Mar.. 1897-Accepted, 1st May, 1897
PROVISIONAL SPECIFICATION.
Improvements in Inflatable Tyres for the Wheels of Velocipedes
and other Road Vehicles.
I WILLIAM HEATLEY, of 39 Glynn Street, Vauxhall, in the County of
Surrey, Model Maker, do hereby declare the nature of this invention to be as
follows:-
This invention relates to the tyres for wheels of velocipedes and other road
carriages, and is designed to facilitate the use of air or other fluid as an elastic
medium to reduce vibration or shock for the rider and gain other advantages.
According to my invention the rim of the wheel is provided with a central part
and two hollow grooved channels one on each side of the central part and
surrounding the rim. A suitable guard or flange projects from the outer side of
each channel. Around this rim is arranged the inflateable tube, in the case of a
double tube pneumatic tyre, and the cover therefor is provided with a thickened
comparatively stiff edging, which may be of oval or other convenient shape in
cross section-attached to the cloth, or cover, somewhat eccentrically of the central
line of greater diameter of such oval.
In the case of a single tube inflateable or pneumatic tyre suitable provision is
made for continuing the web around the interior of the tube and for the thickened
side pieces to serve as locking flaps.
The thickened edges of the cover, or of the flaps of the single tube tyre, are,
whilst the tube is deflated, pressed into the channel through the opening between
the sides of the channel which sides overhang and form ledges.
As soon as these thickened flexible edges have been passed into the channel
edgewise any pull on the cover causes these edges to tilt and lock themselves in
place even without actual inflation of the air tube.
A tab or its equivalent, at one, or more places may be provided for the purpose
of affording a better hold in getting the thickened locking edge into a favorable
position for its removal from the channel when the air tube has been deflated.
The thickened edges I prefer to make by building up turn upon turn of thin
covering material on a central thin flexible piece or core of stiffening material
for which purpose solutioned canvas answers well. When so far finished I find
it useful to pay over the surface a coating of pure rubber and then apply the
cover material as referred to.
The guard referred to serves in a double tube pneumatic tyre to prevent the
inflated tube from becoming expauded into the crevices of the cover next the
rim-channel edges and receiving injury thereby.
1000
WM. BROOKES & SON,
55 & 56 Chancery Lane, London, Agents for the Applicant.

page_text: TUATION.
Improvements in Inflatable Tyres for the Wheels of Velocipedes
and other Road Vehicles.
I WILLIAM HEATLEY of 39 Glynn Street Vauxhall in the County of Surrey
Model Maker 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 inflated tyres for the wheels of velocipedes and other
road carriages and the object thereof is to enable such tyres to be readily attached
to or detached from the rims of the said wheels.
According to this invention the rim of the wheel is provided with a central part
and two hollow grooved channels one on each side of the central part, and
surrounding the rim. A suitable guard or flange projects from the outer side of
each channel.
Around this rim is arranged the inflatable tube in the case of a double tube
inflated tyre and the cover therefor is provided with a thickened comparatively
stiff edging (which edging may be of oval or other convenient shape in cross
section) attached to the cloth or cover somewhat excentrically to the centre line of
the major axis of such oval.
In the case of a single tube inflatable or pneumatic tyre suitable provision is
made for containing the web around the interior of the tube and for the thickened
side pieces to serve as locking flaps.
The thickened edges of the cover or of the flaps of the single tube tyre are
when the tube is deflated pressed into the channels through the opening between
the sides of the channel which sides overhang and form ledges. As soon as these
thickened flexible edges have been passed into the channels edgewise any pull on
the cover causes these edges to tilt and lock themselves in place even without actual
inflation of the air tube..
a
A tab or its equivalent at one or more places may be provided for the purpose
of affording a better hold in getting the thickened locking edge into
favourable position for its removal from the channel when the air tube has
been deflated.
The thickened edges I prefer to make by building up turn upon turn of the
material of which the cover is composed on a central thin flexible piece or core of
stiffening material for which purpose solutioned canvas answers well.
When so far finished I find it useful to pay over the surface a coating of pure
rubber and then apply the cover material as referred to.
The guard referred to serves in a double tube pneumatic tyre to prevent the
inflated tube from becoming expanded into the crevices of the cover next the
rim-channel edges and receiving injury thereby.
And in order that my said invention may be fully understood I will explain the
same with reference to the accompanying sheet of drawings in which
Fig. 1 represents section of my improved tyre.
Fig. 2 represents section of same as applied to wheels with wooden rims.
Fig. 3 shews part elevation of my improved tyre.
The same letters denote the same parts in all the figs.
a is the rim of the wheel having a flanged central part 6 and two hollow
approximately quadrant shaped grooved channels ce one on each side of the
central part and surrounding the rim circumferentially. A suitable guard or
flange d projects from the outer side of each channel e is the air tube f the
cover.
The air tube is preferably formed of rubber in the usual way and the cover may

page_text: be formed of indiarubber and canvas or other suitable textile material the said
canvas or other material being used to prevent the cover from stretching unduly
when the air tube is inflated.
The edges of the cover fare thickened and preferably oval or elliptical in cross
section as shewn at g g.
As will be seen from the drawings the edges of the cover are so formed as to
project further on the outside than on the inside of the cover so that when the
said edges have been forced into the grooves edgewise a slight pull on the cover
causes the said edges to tilt or partially rotate and thereby lock themselves without
inflation in the grcores which are only just wide enough at the part where the
edges of the cover are inserted to admit the minor axis of the said edges so that
the said edges cannot be pulled out of the grooves except when they are turned so
as to present the minor axis to the groove.
The edges may be made by rolling the material of which the cover is composed
over a central core which may be of canvas or any other suitable material.
The core and the edges may be elastic as it is not necessary that the thickened edges
of the cover should be inextensible as provided the edges are stiff enough to prevent
them from bending crosswise when the tyre is inflated they cannot come out of the
grooves if they should stretch longitudinally.
To enable the cover to be removed when deflated I attach one or more tabs t to
the edge of the cover on each side which tabs when pulled tilt the edges of the
cover and draw them out of the grooves.
When a portion of the edge of the cover has been withdrawn from the rim the
remainder may be withdrawn by the fingers.
If the rim of the wheel is made of wood the grooves may be formed as shewn at
Fig. 2 and the flanged portion of the central portion 6 may be formed by attaching
a thin strip of metal k to the central portion b.
Tyres constructed as hereinbefore described will not become detached from the
wheels when deflated.
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. An inflatable tyre for the wheels of velocipedes and other road vehicles
having an outer cover provided with thickened elliptical edges attached excen-
trically to the cover the said edges being adapted to engage with circumferential
grooves in the rim of the wheel to which the said tyre is attached.
2. In tyres for the wheels of velocipedes and other road vehicles the combination
of an inner inflatable tube an outer cover having thickened elliptical edges attached
excentrically to the said cover and a wheel having approximately quadrant shaped
grooves in the rim thereof in which the edges of the cover are secured as herein-
before specified.
3. A cover for inflated tyres having thickened elliptical edges with a central core
substantially as specified and for the purpose stated."
Dated this 27th Jan
1007
T. E. HALFORD,
11 Furnival Street, London, E.C., Agent for Applicant.