An Improved Pneumatic Tyre and Wheel-rim for Cycles and other Vehicles.
Year: 1898

page_text: Date of Application, 17th Jan., 1898-Accepted, 26th Mar.,
1898
COMPLETE SPECIFICATION.
An Improved Pneumatic Tyre and Wheel-rim for Cycles and
other Vehicles.
We, JAMES IGNATIUS KENDALL, Fireman, and CECIL THORNTON, Fireman, both
of 22; Queen Street, Stourton, near Leeds, in the County of York, 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:—
These improvements relate to that class of tyre called pneumatic, which are formed
of an elastic tube or other receptacle, distended or inflated by air or other suitable
gas or fluid, placed within a chamber at or formed by the rim, and combined with a
solid tyre of elastic or other suitable material. And in order that the said invention
may be understood, we will proceed to describe the same with the aid of the
accompanying sheet of drawings.
Figure 1 is a combined cross-section and side elevation of a rim and tyre constructed
according to the invention, and Figure 2 a combined cross-section and side elevation
of the solid tyre or tread, with side flanges, the under sides of same corrugated.
Referring in the first place to Figure 1, A is the rim of the wheel, shaped so as to
form a chamber adapted to receive within it the air tube B, made as usual of elastic
or other flexible airtight material, which is inflated with air or other suitable gas or
fluid in the usual way. C is the solid tyre made of elastic or other suitable
material.
The inner part of this solid tyre comes in contact with the air tube B, while the
outer part projects outwards through an opening in the outer periphery of the rim A,
and rests upon the ground, forming the tread of the tyre.
The incurved part of the chamber or rim A has a series of small grooves D, into
which the corrugations E on the under side of the side flanges of the solid tyre C are
forced by the inflation of the air tube B, thus preventing the said solid tyre from
being forced therefrom by the aforementioned inflation or by any other cause, as for
instance side-drag on the tyre.
The solid tyre C is free to move inwards and outwards between the edges of the
opening in the outer periphery of the chamber or rim A, thus securing the resiliency
of the air tube B, whilst the same is protected from injury by being enclosed in a
non-puncturable chamber, and the solid tyre C being of such a thickness as to prevent
any object likely to injure the air tube from penetrating. The chamber or rim A is
shown in drawing as made of what is commonly known as the solid type, but where
extra strength is required the type known as the double hollow would preferably be
adopted.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
First. A tyre composed of a chamber or rim, an air tube contained within the
said chamber or rim, and a solid tyre bearing against the said air tube and extending
through an opening in the outer periphery of the said chamber or rim.

page_text: Second. In the above combination on the incurved part of the chamber or rim,
a series of grooves, and on the solid tyre, side flanges with corrugations on the under
side of same, into which aforementioned grooves the said corrugations are forced by
the inflation of the air tube, thus preventing the said solid tyre from being forced
from the chamber or rim, substantially as described and shown in the accompanying
drawings.
JAMES IGNATIUS KENDALL.
CECIL THORNTON.
John E. Walsh,
Royal Exchange Chambers, Boar Lane, Leeds,
Patent Agent for the Applicants.