Improvements in Pneumatic Tyres for Velocipedes and other Vehicles.
Year: 1896

page_text: Date of Application, 4th Dec., 1896
Complete Specification Left, 3rd Sept., 1897-Accepted, 23rd Oct., 1897
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Tyres for Velocipedes and other
Vehicles.
WILLIAM GEORGE HARTNOLL of 65 High Street Barnstaple in the County of
Devon Builder do hereby declare the nature of this invention to be as follows:-
My invention has for its object to provide an improved pneumatic Tyre for
Velocipedes and other Vehicles."
It is well known that a cushion Tyre has advantages over a pneumatic Tyre
namely less liability to skid or slide and has no air tube to puncture. I combine
these advantages with those of a pneumatic Tyre such as resiliency and lightness.
The tread of the Tyre or that part which bears on the road I make to project
in the form of a semicircle or any other shape at such a distance from the inside
tube as to prevent any chance of puncturing. This projection may be solid or
to reduce the weight of the tyre a hollow space may be left on the inside of this
projection over which I stretch a covering of some pliable puncture proof material.
In case of the inside tube not being used I form an air tight Joint adjacent
to the rim by means of a rebate or lap formed in the same tyre which extends
all round the wheel and is kept air tight by the pressure of air on the inside
against the rebate or lap.
Dated this 3rd day of December 1896.
WILLIAM GEORGE HARTNOLL.
COMPLETE SPECIFICATION.
Improvements in Pneumatic Tyres for Velocipedes and other
Vehicles.
I, WILLIAM GEORGE HARTNOLL, of 65 High Street, Barnstaple, in the County
of Devon, Builder, 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 has for its object to provide improved pneumatic tyres for
velocipedes and other vehicles, the said tyres having a tread as shewn in the
accompanying drawings.
In the drawings annexed Figures 1 and 2 are views of sections of tyres
constructed in accordance with my invention.
In Figure 1 the tyre covering is made a complete tube and constitutes the air
chamber. On each side of the tread I have a groove or recess A to prevent skidding
or side slip. B is a hollow space over which is stretched a covering C of a pliable

page_text: puncture proof material. D is a rebate or lap formed in the same tyre and
extends all round the wheel and is kept air tight by the pressure of air on the
inside against the rebate or lap.
In Figure 2 instead of a rebate or lap an inside tube is used. On each side of
the tread I have a groove or recess A to prevent skidding or side slip. b is a
hollow space. C is an inside air tube.
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. A pneumatic tyre of cross section substantially as described and shewn in the
drawings.
2. A pneumatic tyre of cross section substantially as described and shewn in
the drawings, such tyre having an inner air tube.
3. The improved tyres hereinbefore described.
Dated this 2nd day of September 1897.
WILLIAM GEORGE HARTNOLI