Improvements in Pneumatic Tyres.
Year: 1896

page_text: Date of Application, 10th Dec., 1896
Complete Specification Left, 19th May, 13-7-Accepted, 19th June, 1897
SIONAL
Improvements in Pneumatic Tyres.
I THOMAS JAMES CURRY of Clifton House Netherton near Dudley in the County
of Worcester, Iron Works Manager do hereby declare the nature of my said invention
to be as follows:-
My invention as for its object improvements in pneumatic tyres by which I make
a simple and reliable tyre in one piece which can be fastened securely to the rim
and does not fly off or get foul with the wheel when punctured as is the case with
most tyres and it can be easily detached and repaired from the inside which is a
great advantage as the compressed air when it is again inflated presses the patch
firmer on. In carrying my invention into practise I form a small circular air
chamber around the inner circumference of the main or outer air chamber or tyre
and this small air chamber fits into a groove formed in the centre of the rim by
which means the tyre is secured into the rin. This small air chamber is attached
to or forms part of one of the inner ends of the outer air chamber or tyre the other
end which is loose or detachable fits into the rim under the small air chamber so that
when the tyre is punctured the small air chamber can be deflated and the loose end
pulled out and the tyre repaired from the inner side.
When desired I may use an independant air chamber inside the outer tyre. Instead
of forming a separate air chamber around one of the edges of the outer air cbamber
or tyre I may construct the edges of the tyre so that when they are placed in the
rim they form an air chamber inside the rim which communicates with the outer
chamber or tyre, the parts which the rim grips are enlarged and meet in the centre
and when the tyre is inflated the inner air chamber expands and securely holds the
tyre in the rim. Or instead of securing the tyre in the rim by expanding the
portion which fits into the rim by compressed air I may fit a number of springs made
of steel, rubber, cane or other suitable material inside the tyre at the part where the
edges of the rim grip the tyre by which means the tyre is firmly held in the rim
whether inflated or not.
Dated the 15th day of Donamban 1906
GEORGE BARKER,
77 Colmore Row, Birmingham, Agent for Applicant.
COMPLETE
CCIFICATION.
Improvements in Pneumatic Tyres.
I, THOMAS JAMES CURRY, of Clifton House, Netherton, near Dudley, in the
County of Worcester, Iron Works Manager, do hereby declare the nature of my
said 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 has for its object improvements in pneumatic tyres by which I make
a simple and reliable tyre in one piece which can be fastened securely to the rim and
does not fly off or get foul with the wheel when punctured as is the case with

page_text: most tyres and it can be easily detached and repaired from the inside which is a
great advantage as the compressed air when it is again inflated presses the patch
firmer on.
In carrying my invention into practice I form a small circular air chamber around
the inner circumference of the main or outer air chamber or tyre and this small air
chamber fits into a groove formed in the centre of the rim by which means the tyre
is secured into the rim. This small air chamber is attached to or forms part of one
of the inner ends of the outer air chamber or tyre; the other end which is loose or
detachable fits into the rim under the small air chamber so that when the tyre is
punctured the small air chamber can be deflated and the loose end pulled out and
the tyre repaired from the inner side. When desired I may use an independent nir
chamber inside the outer tyre.
Instead of forming a separate air chamber around one of the edges of the outer
air chamber or tyre 1 may construct the edges of the tyre so that when they are
placed in the rim they form an air chamber inside the rim which communicates
with the outer chamber or tyre; the parts which the rim grips are enlarged and
meet in the centre and when the tyre is inflated the inner air chamber expands
and securely holds the tyre in the rim. Or instead of securing the tyre in the rim
by expanding the portion which fits into the rim by comprossed air I may fit a number
springs made of steel, rubber, cane, or other suitable material inside the tyre at the
part where the edges of the rim grip the tyre by which means the tyre is firmly held
in the rim whether inflated or not.
of
In order that my invention may be more clearly understood and easily carried into
practical effect I have appended hereunto a double sized sheet of drawings upon which
I have illustrated examples of my improved tyre.
Figure 1 is a cross sectional perspective view of part of my tyre and rim.
Figures 2 and 3 are similar views to Figure 1 showing modifications of my
invention.
Figure is a similar view to Figure 1 showing my tyre fitted with an inner
air chamber.
Figure 5 is a cross sectional perspective view of my tyre as shown at Figure 1
detached from the rim.
In carrying my invention into practice I form the small air chamber A which may
be made round, oval or other suitable section around the edge of the main air
chamber or tyre B, the other edge or flap 1 being formed concave so as to fit
partly around the small air chamber A. When attaching my tyre to the rim R
the small independent air chamber fits into the groove formed in the centre and the
flap &fits around this air chamber, the shoulders and butting against each
other. The small air chamber is then inflated through the valve C, thereby firmly
binding the edge & in the interior of the groove, the edges and of the groove
fitting into the recesses or grooves and formed in the tyre, by which means the
tyre B is firmly held in the rim and should this tyre be punctured through any cause
it is impossible for it to come off the rim until the small air chamber A is deflated
when the flap can be drawn out and the puncture mended from the interior and
the tyre easily and quickly replaced.
In the modifications as shown at Figures 2 and 3 I dispense with the small
independent air chamber and construct the edges of the tyre in the case as shown
at Figure 2 with the enlargements & and which fit into the small channels and
formed by bending over the edges of the rim, the inside of which is made perfectly
air tight by solution and canvas or other suitable material. To fix the tyre the side
or edge is first inserted and pressed well into the rim so as to allow the side or
edge to be inserted, then the side &' is pulled well down until the edges & and 60
which are formed at an angle meet together. Air is then forced through the usual
valve into the chamber D passing through the opening d' into the tyre thus expanding
the sides or edges, thereby firmly securing the tyre into the rim. In the case
as shown at Figure 3 I connect a number of springs S made of steel rubber, cane or
other suitable material in the interior of the tyre which force the edges and

page_text: inflated or deflated. To detach the tyre when punctured or for other causes it is
firmly gripped between the finger and thumb thereby depressing the springs when
it can easily be removed.
I
In some cases I may provide the tyre B with the air chamber E as shown at
Figure 4, but I prefer the single tube tyre as it is much easier to repair in case
of a puncture.
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 :-
CLAIMS.
First. The improvements in pneumatic tyres consisting essentially of a tyro B
having the independent air chamber A formed in and around or attached to one
edge for fitting into a groove formed in the rim, the opposite edge being so formed
as to fit partly around the independent air chamber inside the rim in the manner
and for the purpose substantially as hereinbefore described and as shown upon the
accompanying sheet of drawings.
Second. Securing a pneumatic tyre into its rim by forming an independent air
chamber on one edge of the tyre for fitting into a groove formed in the rim, the
opposite edge of the tyre being formed concave so as to fit partly around the
independent air chamber so that when the independent air chamber is inflated it binds
the said edge in the interior of the groove in the manner substantially as herein-
before described and as shown upon the accompanying sheet of drawings.
Third. Securing a pneumatic tyre in its rim by forming the enlargements such
as 7 and 8 around the edges which fit into side recesses or grooves formed in the
rim, the inner edges abutting against each other in the manner and for the purpose
substantially as herein before described and as shown upon the accompanying sheet
of drawings.
Fourth. Securing a pneumatic tyre in its rim by attaching a number of cross
springs or their equivalents in the interior of the tyre for forcing the edges against
the interior of the rim in the manner substantially as hereinbefore described and as
shown upon the accompanying sheet of drawings.
Dated this 18th day of May 1897.
GEORGE BARKER,
77, Colaiore Row, Birmingham, Agent for Applicant.