Improvements in Inflatable Tyres.
Year: 1896

page_text: PROVISIONAL
TION.
Improvements in Inflatable Tyres.
I HERBERT GODSAL of 13 Bruton Street London Barrister-at-Law, do hereby
declare the nature of this invention to be as follows:-
My invention relates to inflatable tyres for wheels or other surfaces which tyres
do not consist of a perfect tube but which are of flat or other cross section and are
capable of being made to assume a tubular form by means of air gas fluid or other
substance under pressure by means of my invention the tyre is capable of being
applied to a wheel or other object (e.g. a barrel or box) which it is desired to move
by rolling. To carry out my invention I require four things namely a flexible
tyre of practically air tight material a circular band of inextensible material an
endless inflatable tube of rubber or other suitable material and the surface to
which the tyre is to be affixed. In carrying out my invention I place one edge of
the tyre round the wheel rim or other surface to which I desire to attach the
tyre. I then place above this edge and round the wheel rim the or other surface
an endless tube of rubber or other inflatable material and of suitable dimensions.
for the object in view provided with a valve passing air tight through the substance
of the tyre by means of which it may be inflated above this tube I place a circular
band of inextensible material of suitable circumference. I then place the edge of
the tyre between the first mentioned edge and the wheel rim, or other surface to
which the tyre is to be affixed. On inflating the endless inflatable tube the said.
tube will exert pressure between the inextensible band and the wheel rim or other
surface. The tyre will thus be rendered air tight and may be inflated. I some-
times attach the circular band of inextensible material to the substance of the air
tube and sometimes also to the substance of the tyre, to make it the better conform
to its proper position with reference to the air tube and overlapping edges of the
tyre.
In order to increase the friction between the overlapped edges of the tyre and so
to strengthen the joint between them I sometimes form each edge of the tyre with
a thickening or bead so that the overlapped edges will interlock more strongly the
one with the other.
When necessary for the purpose of preventing rolling I provide external circum-
ferential bead or beads depression or depressions round the tyre which engage
with corresponding parts on the wheel rim or other surface to which the tyre is to
be affixed.
1000

page_text: Improvements in Inflatable Tyres.
I HERBERT GODSAL of 13 Bruton Street, Berkeley Square London W.
Barrister-at-Law 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 :-
My invention relates to inflatable tyres for wheels or other surfaces, which tyres
do not consist of perfect tubes, but are of flat or other cross section and are capable
of being made to assume a tubular form and being expanded in that form by means
of air, other gas, fluid or substance under pressure.
By means of my invention the tyre is capable of being applied to a wheel, or
other object e.g. a barrel or box, which it is desired to move by rolling.
To carry out my invention I require four things viz. A flexible tyre of
practically air tight material, a circular band of inextensible material, an endless
inflatable tube and the surface to which the tyre is to be affixed.
In carrying out my invention I place one edge of the tyre round the wheel-rim
or other surface to which I desire to attach the tyre. I then place above this
edge and round the wheel-rim, or other surface, an endless tube of flexible inflatable
material, and of suitable dimensions for the object in view, provided with a valve
passing airtight through the substance of the tyre by means of which it may be
inflated. Above this tube I place a circular band of inextensible material of
suitable circumference. I then place the other edge of the tyre between the first
mentioned edge and the wheel-rim, or other surface, to which the tyre is to be
affixed. On inflating the endless inflatable tubé the said tube will exert pressure
between the inextensible band and the wheel-rim, or other surface, to which it is
desired to affix the tyre, and so press the overlapped edges of the tyre against each
other and the said wheel-rim or other surface. The tyre will thus be rendered
airtight, and may be inflated in the ordinary way.
I sometimes attach the circular band of inextensible material to the substance
of the airtube, and sometimes also to the substance of the tyre to make it the better
conform to its proper position with reference to the air tube and overlapping edges
of the tyre.
'In order to increase the friction between the overlapped edges of the tyre and
to strengthen the joint between them I sometimes form each edge of the tyre with
a thickening or bead so that the overlapped edges will interlock more strongly the
one with the other.
Where necessary for the purpose of preventing rolling I provide an external
circumferential bead or beads, depression or depressions, round the tyre which
engage with corresponding parts on the wheel-rim or other surface to which the
tyre is to be affixed.
In order that my invention may be the more readily understood I have annexed
the accompanying drawings which shew my invention applied to a bicycle wheel
and in which
Fig. 1. shews a transverse section through the parts of the combination placed
in their proper positions, and shews the valve for inflating the inflatable tube.
Fig. 2 shews the parts of the combination, the edges of the tyre being separated
and the inflatable tube deflated.
Figs. 3. shew the valve for inflating the tyre.
Fig. 4. shews a transverse section through the parts of the combination placed
in their proper positions.
Like letters indicate like parts throughout the drawings.
A. is the flexible tyre of practically airtight material, the edges being provided

page_text: with hook-like thickenings or beads a, a, for the purpose of interlocking the more
strongly the one with the other.
Sometimes for the purpose of making the joint between the overlapping edges of
the flexible tyre more strongly airtight I provide the flap a¹ (Fig. 4), which may
be conveniently of rubber, and is attached at one edge, airtight (e.g. cemented), to
the inner surface of the tyre; the flap is placed between the upper edge of the
tyre and the inflatable tube as in Fig. 4.
B is the circular band of inextensible material attached to the substance of the
air tube C along the surface bb and also attached to the flexible tyre A. by means
of the continuation piece b 1.
C is the endless inflatable tube constructed of practically airtight and non-
expansible material.
To render the joint between the overlapped edges of the tyre and the inflatable
tube the more readily airtight it is advisable to fix on the lower external portion.
of the inflatable tube C a strip or seating of rubber c 1. (Fig. 1).
D is the rim of the wheel.
E. is a valve fixed airtight in the inflatable tube C. and passing through (by
means of the holes e 1, e2,) the two overlapped and interlocking edges of the
flexible tyre A. and also through the rim D, for the purpose of inflating the-
inflatable tube C.
F is a valve intended to pass through the rim and the lower edge of the flexible
tyre A, and the flap a 1. (if used), for the purpose of inflating the tyre A.
f1 is a continuation of the inlet pipe of the valve F, which sometimes must.
be continued at a suitable curve f2. as far as is necessary to conduct the air to
the inflatable tyre A, and in order to prevent its being closed by the pressure of
the seating c 1.
Having placed the parts of the combination in the position shewn in Figures 1
and 4, 1 inflate the tube C. by means of the valve E and so form an airtight.
joint between the overlapped edges of the tyre. I next inflate the tyre A, by
means of the valve F.
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 :-
The combination of an inflatable tyre, a circular band of inextensible material,.
an endless inflatable tube, and the wheel rim or other surface substantially as and
for the purposes herein before described.
11007
HERBERT GODSAL.