Improved Pneumatic Tyre for Wheels of Velocipedes, Cabs, and other Road Vehicles.
Year: 1896

page_text: Date of Application, 2nd Sept., 1896
Complete Specification Left, 2nd June, 1897-Accepted, 10th July, 1897
PROVISIONAL SPECIFICATION
An Improved Pneumatic Tyre for Wheels of Velocipedes, Cabs, and
other Road Vehicles.
We FRANK MARKHAM SANDERS and HERBERT RUFANE SANDERS of No. 117,
Alexandra Road, Edgbaston, Birmingham in the County of Warwick, Manufacturers,
do hereby declare the nature of this invention to be as follows:-
This invention relates as hereinafter described to Pneumatic Tyres which are
applicable for cycles, cabs, carriages, and other vehicles, such tyres being tubular
in cross section and fit around the periphery of a metallic or other rim of a wheel.
Heretofore, pneumatic tyres have been made with a division around the
circumference thereof so as to gain access to the interior for the purpose of repairing
the tyres when punctured or cut, difficulties have occurred in making a perfect joint
where the division of the edges meet.
By our invention these difficulties are overcome. Our invention consists essentially
of a flat annular ring of rubber the edges being formed in a manner whereby they
interlock each other and form a flexible, tubular, annular ring which may be inflated
with air in the usual way and form a perfect tyre.
In carrying our invention into practice we make a flat annular ring in a similar
manner to the outer casing of the ordinary pneumatic tyre consisting of layers of
canvas and rubber along each edge of the said ring and preferably on the outer
edges though, in some cases on the inner edge we form a flat swelling or projecting
rib of rubber. Along the entire edge thereof on one side we form a groove and on
the other a rib to engage in the said groove, in such a manner that when the two
edges are brought together they form a tenon circumjacently thus constituting a
tubular, annular, ring. This said ring is placed on the rim of a wheel with the
projecting rib next the rim. We inflate the said ring with air through an ordinary
valve placed in some convenient part of the tubular ring which forces the projecting
rib into the hollow part of the rim thus forcibly locking the tenon and preventing
any possible escape of the air and at the same time fixing the tyre firmly on the rim.
We may in some cases provide a flap of rubber to.circumvest the inside of the
division and so form an extra protection against the escape of air.
We may vary the form or shape of the tenon as circumstances may require to
carry our invention into effect without departing from the nature thereof, or when
desired we may form a lap joint. It will be obvious that our improved tyre may
be applied to most forms of rims and that an inner tube may be employed and
inflated instead of inflating the tyre aforesaid.
Dated this 1st day of September 1896

page_text: .
COMPLETE SPECIFICATION.
An Improved Pneumatic Tyre for Wheels of Velocipedes, Cabs, and
other Road Vehicles.
We FRANK MARKHAM SANDERS and HERBERT RUFANE SANDERS of No. 117
Alexandra Road, Edgbaston, Birmingham, in the County of Warwick Manufacturers
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 as hereinafter described to Pneumatic Tyres which are
applicable to cycles, cabs, carriages and other road vehicles such tyres being tubular
in cross section and fitting around the periphery of a metallic or other rim of a wheel.
Heretofore pneumatic tyres have been made with a division around the
circumference thereof so as to allow access to the interior for the purpose of
repairing the tyres when punctured or cut, and great difficulty was experienced in
making a perfect joint where the division of the edges meet. By our invention these
difficulties are overcome. Our invention consists essentially of a flat annular ring
of rubber the edges being formed so that they interlock and form a flexible tubular
annular ring which may be inflated with air in the usual way and form a perfect
tyre. In carrying our invention into practice we make a flat annular ring.similar to
the outer casing of the ordinary pneumatic tyre consisting of layers of canvas and
rubber; along each edge of the said ring and preferably on the outer edges though
in some cases on the inner edges we form a flat swelling or projecting rib of rubber.
Along the entire edge thereof on one side we form a groove and on the other a rib
to engage in the said groove in such a manner that when the two edges are brought
together they form a tenon joint thus constituting a tubular annular ring. This
ring is placed on the rim of a wheel with the projecting rib next the rim. We inflate
the ring with air through an ordinary valve placed in some convenient part of the
tubular ring which forces the projecting rib into the hollow part of the rim thus
locking the tenon and preventing any possible escape of the air and at the same
time fixing the tyre firmly on the rim. We may in some cases provide a flap of
rubber to circumvest the outside of the division and so form an extra protection
against the escape of air.
We may vary the form or shape of the tenon as circumstances may require to carry
our invention into effect without departing from the nature thereof or when desired
we may use a lap joint. It will be obvious that our improved tyre may be applied
to most forms of rims and that an inner tube may be employed and inflated instead
of inflating the tyre aforesaid. We will describe our invention by reference to the
accompanying drawings the sanie letters of reference indicating similar parts
throughout.
Figure 1 represents in cross section a portion of the flat annular ring.
Figure 2 shows in cross section the ring bent partly round into shape ready for
adjustment on the rim.
Figures 3 and 4 shown in section the tyre fixed in its place in the rim.
Figures 6, 7, and 8 are modifications of our invention.
In Figure 1A represents the thick part or tread of the flat annular ring. Band B¹
are swellings or projecting ribs of rubber which may be made to fit the shape of the
rim of the wheel C is a rib along one edge and D a groove along the other edge of
the said ring. Before the ring is inflated it is placed in the rim so that the rib C
fits into the groove D. When in this position it can be inflated and the internal
pressure of the air fixes the tyre to the rim and locks the tenon joint so that no air
can escape. The flap F affords an additional means of preventing the escape of air.

page_text: In Figure 6 the tenon is shown wedge shape in Figure 7 as a lap joint and in
Figure 8 as a hooked tenon joint.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what we
claim is :-
1. A Pneumatic Tyre consisting of a flexible tubular ring the edges of which
when placed together form a tenon joint or its equivalent which tenon joint is held
together on the outer side by the rim and on the inner by the pressure of the air
substantially as described and illustrated in the accompanying drawings.
2. The combination with a pneumatic tyre of the tenon joint or its equivalent and
the flap for covering the space between the edges of the joint substantially as herein
described and illustrated and for the purpose set forth.
3. The construction of pneumatic tyres substantially as described and illustrated
in Figures 1 to 8 of the accompanying drawings.
Dated this 31st day of May 1897.
WILLIAM HENRY BARACLOUGH,
36, Temple Street, Birmingham, Agent for the Applicants.