Improvements in inflatable tyres with self sealing band combined and the like thereof
Year: 1897

page_text: JAMES RAE, Heck, near Lockerbie, Dumfriesshire, Joiner, do hereby declare
the nature of this invention to be as follows:-
Improvements in inflatable tyres with self sealing band combined and the like
thereof.
This invention comprises a new and improved construction and arrangement
in wheels, the tyres of which are inflatable, and for making the tyres more secure
against punctures and also allowing of them being able to be opened or turned
inside out. According to my invention I form an inflatable self sealing tyre
of a divided tubular ring (tubular in cross section). The curved strip forming
the divided tubular ring is made to pass round the exterior of the metallic or
other rim of the wheel, so that the band on being detached from the rim of the
wheel, could be opened or turned inside out, so that free access to its interior is
gained so as to allow repairs to be made on the inside, an air tight joint all
round this division would be formed, by making the two side edges of the curved
strip forming the dividid tubular ring to overlap one another, this air tight
division by the overlapping or crossing of the two side edges of the tyre when
placed round the rim of the wheel, is made to cross the full width of the rim,
the outer lip of the division passing round the exterior of the band being held
within the rim of the wheel near to the one side edge of the rim.
The inner lip of the division being against the opposite side of the tyre, within
the interior of the band, having within the interior of the curved strip forming
the divided tubular ring, an inner ring or division of prepared solution or rubber,
which would extend all round the inside of the band crossing the band to within
a little of the rim on both sides, that is to say of such a width so as not to
interfere with the overlapping part of the tyre herein after explained, so that in
being pierced from the outside or tread of the tyre, the puncture so made would
pass through the band of solution. The pressure of air from the inside of the
tyre to escape would force the solution into the puncture, thus stopping the air
escaping from the tyre. The self sealing band would form part of the complete
tyre, being separated from the canvas lining by a thin coating of rubber. The
self sealing band being in the form of insertion, that is coated with rubber on
both sides. The two overlapping edges of the band which would extend all
round the tyre on both sides, I form of elastic rubber, smaller in diameter than
the rim of the wheel, which would not only extend all round the wheel and bear
by its elasticity against it, but is also of such a width so as to cross to the opposite
side of the rim, small ridges or projections on both sides of the exterior of the
band would be formed to lie under the lip of the rim, having small slits cut at
intervals across the ridges to allow the air to escape from the trough groove in
the rim, and also from under the lapping edge of the band. The rim I make
with a trough groove extending all round it, the side edges to incline inward
so as to form all round the rim a groove to allow the divided projections round

page_text: the exterior of the band to lie under. Both side edges of the tyre would be
placed into the rim from the same side of the wheel, so that in pressing the first
side of the tyre into its place round the rim of the wheel, the side edge being of
such a width so as to cross the rim and lie under the opposite lip of the rim
thus forming the underlapping edge of the band, and being smaller in diameter
then the rim of the wheel & formed of elastic rubber becomes extended and
bears by its elasticity against the rim. The second or overlapping edge of the
band having the air valve tube attached to it, is then inserted into its place, by
first inserting the air valve tube through a hole in the underlapping edge of the
band first placed into the rim, thereafter through a hole in the rim, and then
more and more working continuously all round the wheel, this overlapping edge
of the band. I also form of elastic rubber thicker than the underlapping edge of
the band, so as not to double up when being inserted into its place round the
rim, being also smaller in diameter than the rim the edge becomes extended and
bears by its elasticity within the interior on the opposite side of the band, thus
pressing the underlapping side of the tyre against the rim of the wheel, no part
of the tyre must be cemented to the wheel, so as to allow repairs to be made on
the wheel. The overlap would not extend beyond the edge of the rim, so as not
to interfere with the self sealing band previously explained. The tyre may be
made in one piece, with the lapping parts extending from both side edges of
the band. The tyre might however be made so as to allow the self sealing band
to be cemented on to the inside of the tyre, thus allowing the selfsealing band
to be replaced or repaired as the case may require. The tyre I make of layers
of rubber and canvas, in a similar way in which the protective outer covers for
inflated tubular tyres are now formed, except that I insert within the interior
of the divided curved strip, a band of prepared solution or rubber protected
from the canvas lining by a thin coating of rubber. The self sealing band
would not interfere with the overlapping part of the tyre. Preferably form
round the outer surface of the tyre corrugations, to prevent side slipping. The
air valve tube is made to pass through and fix on to the overlapping part of the
tyre by a small flange and screw, this overlapping edge being the last placed
into the rim. Any suitable valve may be used having on its outer end a screw
thread cut to receive a nut to bear against the rim so as to bring the tyre to bear
against the rim.
Date this Twenty-third day of December 1897.
JAMES RAE, Heck, near Lockerbie, Dumfriesshire, Joiner, 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:-
Improvements in inflatable tyres with self sealing band combined, and the like
thereof.
This invention comprises a new and improved construction and arrangement
in wheels the tyres of which are inflatable, and for making the tyres more secure
against punctures and also allowing of them being able to be opened or turned
inside out. According to my invention I form an inflatable self sealing tyre
of a divided tubular ring (tubular in cross section).

page_text: The curved strip forming the divided tubular ring is made to pass round the
exterior of the metallic or other rim of the wheel, so that the band on being
detached from the rim of the wheel could be opened or turned inside out, so that
free access to its interior is gained so as to allow repairs to be made on the inside.
An air tight joint all round this division would be formed by making the two
side edges of the curved strip forming the divided tubular ring to overlap one
another. This air tight division by the overlapping or crossing of the two side
edges of the tyre when placed round the rim of the wheel is made to cross the
full width of the rim. The outer lip of the division passing round the exterior
of the band being held within the rim of the wheel near to the one side edge of
the rim.
The inner lip of the division being against the opposite side of the tyre within
the interior of the band, having within the interior of the curved strip forming
the divided tubular ring an inner ring or division of prepared solution or rubber
which would extend all round the inside of the band crossing the band to within
a little of the rim on both sides, that is to say of such a width so as not to
interfere with the overlapping part of the tyre herein after explained, so that in
being pierced from the outside or tread of the tyre the puncture so made would
pass through the band of solution. The pressure of air from the inside of the
tyre to escape would force the solution into the puncture thus stopping the air
escaping from the tyre. The self sealing band would form part of the complete
tyre being separated from the canvas lining by a thin coating of rubber. The
self sealing band being in the form of insertion that is coated with rubber on
both sides. The two overlapping edges of the band which would extend all
round the tyres on both sides, I form of elastic rubber smaller in diameter than
the rim of the wheel which would not only extend all round the wheel and bear
by its elasticity against it but is also of such a width so as to cross to the opposite
side of the rim. Small ridges or projections on both sides of the exterior of the
band would be formed to lie under the lip of the rim having small slits cut at
intervals across the ridges to allow the air to escape from the trough groove in
the rim and also from under the lapping edge of the band. The rim I make
with a trough groove extending all round it, the side edges to incline inwards
so as to form all round the rim a groove to allow the divided projections round
the exterior of the band to lie under. Both side edges of the tyre would be
placed into the rim from the same side of the wheel so that in pressing the first
side of the tyre into its place round the rim of the wheel the side edge being of
such a width so as to cross the rim and lie under the opposite lip of the rim
thus forming the underlapping edge of the band and being smaller in diameter
than the rim of the wheel and formed of elastic rubber becomes extended and
bears by its elasticity against the rim. The second or overlapping edge of the
band having the air valve tube attached to it is then inserted into its place by
first inserting the air valve tube through a hole in the underlapping edge of the
band first placed into rim thereafter through a hole in the rim, and then
more and more working continuously all round the wheel this overlapping edge of
the band. I also form it of elastic rubber thicker than the underlapping edge of
the band so as not to double up when being inserted into its place round the
rim. Being also smaller in diameter than the rim it becomes extended and
bears by its elasticity within the interior on the opposite side of the band thus
pressing the underlapping side of the tyre against the rim of the wheel. No part
of the tyre must be cemented to the wheel so as to allow repairs to be made on
the wheel. The overlap would not extend beyond the edge of the rim so as not
to interfere with the self sealing band previously explained. The tyre may be
made in one piece with the lapping parts extending from both side edges of
the band. The tyre might however be made so as to allow the self sealing band
to be cemented on to the inside of the tyre thus allowing the self sealing band
to be replaced or repaired as the case may require. The tyres I make of layers
of rubber and canvas in a similar way in which the protective outer covers for

page_text: inflated tubular tyres are now formed except that I insert within the interior
of the divided curved strip a band of prepared solution or rubber protected
from the canvas lining by a thin coating of rubber. The self sealing band
would not interfere with the overlapping part of the tyre. Preferably I form
round the outer surface of the tyre longitudinal corrugations to prevent side
slipping. The air valve tube is made to pass through and fix on to the overlapping
part of the tyre by a small flange and screw, this overlapping edge being the last
placed into the rim. Any suitable valve may be used having on its outer end a
screw thread cut to receive a nut to bear against the rim so as to bring the tyre
to bear against the rim.
In the sheets of drawings annexed,
Figure 1 is a cross section parallel with the axis through one part of the
divided self sealing tubular ring and metal rim. In this figure the rim is shown
to be made solid, also showing the division between the lapping edges of the
band crossing the full width of the rim. The outer lip of the division being held
within the rim of the wheel near to the side edge of the rim. The inner lip of
the division lying against the opposite side of the tyre within the interior of the
band. Figure 2 is a similar section through the self sealing tubular ring and
rim showing the rim to be made hollow. Figure 3 is a similar section through
the self sealing tubular ring and a wooden rim. Figure 4 shows a rim and
tubular ring similar to that shown in Figure 1, but opened and turned inside out
so as to allow repairs to be made on the inside, also showing the underlapping
edge of the band crossing the rim, and lying under the opposite lip of the rim.
This edge being smaller in diameter than the rim and formed of elastic rubber
becomes extended and bears against the inside of the metal rim. The other side
edge of the band being formed of elastic rubber thicker than the underlapping
edge so that it shall bear with sufficient pressure against the inside of the band.
Figure 5 is a similar view to Figure 4, but showing a metal tube passing through
the overlapping edge of the band and secured to it by means of a small flange
and screw having within it an air valve of any suitable construction just being
pushed back into its place through the underlapping edge of the band which
lies in the rim and through a hole in the rim. The tube extending outwards
from the rim may be secured to the rim by a nut screwed on to it so as to bear
against the inner circumference of the rim. Figure 6 is a top and end view of
part of a self sealing tubular ring tyre stretched out flat showing the projections
on the exterior of the band which fits into the rim of the wheel, having the
small slits, cut at intervals to allow the air to escape from the trough groove in
the rim. Figure 7 shows a metal tube having a small flange and screw secured
to it by which it may be attached to the band and having within it an air valve
through which the tyre can be inflated.
A is the rim of the wheel with its side flanges A. 1. B is the flexible self
sealing tyre formed of a divided tubular ring. B1 is the self sealing band of
prepared solution or rubber which extends all round the inside of the band
crossing the band to within a little of the rim on both sides that is to say of such
a width so as not to interfere with the lapping edges of the band. C, C1 are the
lapping edges of the band which form an air tight joint all round the division.
C forms the underlapping edge of the band, the other side edge C1 lies over its
interior. D D D D are the small slits cut in the projections at intervals to
allow the air to escape from under the lapping edges of the band. E is the tube
extending outwards through which the tyre can be inflated.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed I declare that what
I claim is :-
-
1. In pneumatic tyres such as are herein described, composed of a rigid wheel
rim having a trough or hollow groove round it, a divided flexible tubular ring

page_text: surrounding the rim, having within the interior of the tubular ring a ring or
division of prepared solution or rubber, and solid external divided projections
near to the side edges of the band to fit into the trough groove the overlapping
and stretching both in diameter and circumference of the elastic side edges of
the band, forming the division between the lapping edges to cross the full width
of the rim, the free escape of air from under the lapping edges of the band all
substantially as herein described in reference to and shown in the accompanying
drawings.
2. In pneumatic tyres such as are herein described forming an air tight joint
by the overlapping of the elastic side edges of the band the overlapping, and
stretching both in diameter and circumference forming the division between the.
lapping edges to cross the full width of the rim. The free escape of air from
under the lapping edges of the band and longitudinal corrugations on its exterior
all substantially as herein described.
3. In pneumatic tyres such as are herein described preventing the free escape
of air when punctured from within the divided tubular ring tyre by the self
sealing band all substantially as herein described.
4. In pneumatic tyres such as are herein described forming the air valve tube
secured to the overlapping edge of the band, and passing through the under-
lapping edge of the band all substantially as herein described.
5. In pneumatic tyres such as are herein described composed of a rigid wheel
rim having a trough or hollow groove round it a divided flexible tubular ring
surrounding the rim all substantially as herein described and illustrated in
Figures 1 to 7 of the accompanying drawings.
Dated this 01 law of Cantomhor 1808