Improvements in Pneumatic Tyres for Wheels of Velocipedes or other Vehicles.
Year: 1892

page_text: Date of Application, 7th Apr., 1892
Complete Specification Left, 6th Jan., 1893-Accepted, 11th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Tyres for Wheels of Velocipedes or
other Vehicles.
LEIGHTON MILLS No. 4 Mutley Park Terrace Plymouth, Devonshire, do
hereby declare the nature of this invention to be as follows :-
-
In addition to an air chamber or tube for the purpose of inflating the treading
part of the tyre, I make use of one or more air, or other fluid pressure, chambers,
or tubes, for the purpose of securing the tyre, or its outer cover, to the rim of the
wheel. This is effected by forming in the material of the tyre, or its outer cover,
a projection, or projections, or flaps, of suitable cross section all around the tyre or
of its outer cover; these projections, or flaps contain a continuous chamber, or
chambers, for the purpose of containing air, water, or other fluid. The chamber,
or chambers, may be made with circumferential openings giving access to the inside
of the chamber or, it may be made in halves, giving access to the inside of the
main air chamber of the tyre. The projection, projections, or flaps, may contain
separate inflation tubes. The rim of the wheel is suitably formed in cross section
for holding the projection, projections, or flaps, and so that, when the chamber, or
chambers, or their internal tubes, are inflated with air, water, or other fluid, they
are thereby secured to the rim of the wheel.
Dated this Sixth day of April 1892
LEIGHTON MILLS.
COMPLETE SPECIFICATION.
Improvements in Pneumatic Tyres for Wheels of Velocipedes or
other Vehicles.
I LEIGHTON MILLS of No. 4 Mutley Park Terrace, Plymouth, Devonshire,
Engineer 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 consists of an improved method of securing pneumatic tyres to the
felloes or rims of wheels of velocipedes and other vehicles. The accompanying
drawing is a cross section of a tyre and rim shewing the manner in which I propose
to carry my invention into practical application as I will now describe: A is the
usual air chamber of a pneumatic tyre, T, is the tyre having the projections or
flaps p. pl. all around its inner circumference: F. F. is the felloe or rim of the
wheel: R is a recess effectually dovetailed in cross section formed in the rim for
the purpose of receiving both the flaps C is a chamber, or tube, formed in one of
the flaps. The other flap is of solid material, although it also may have a similar
tube in it but, preferably one flap only is intended to be tubular. The division
between the flaps at D gives access to the inside of the tyre when it is deflated:
the two flaps being inserted into the recess in the rim air, water or other fluid is
injected into the chamber C, or chambers if both flaps are tubular, until the
pressure necessary for making an air tight joint between the flaps and for securing
the tyre to the rim, is reached the air chamber A can then be inflated. By this
method the usual internal air tube or bladder can be dispensed with. The tyre is
made of suitable materials and is fitted with all necessary appliances for a pneumatic
tyre. I do not confine myself to the exact forms and dimensions of the accompanying
drawing
:

page_text: 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 :
1. A single tube pneumatic tyre divided around its inner circumference and
having one solid and one tubular flap, both such flaps being inserted into one
recess in the rim and secured therein by the injection of air, water or other fluid
into the tubular flap substantially as above set forth and described.
2. The tyre and rim as aforesaid having either one or both flaps formed with
tubes in them combined with the use of water or other like fluid under pressure in
such tubes for securing the tyre to the rim substantially as above set forth and
described.
Dated this Fifth day of January 1893
LEIGHTON MILLS,
Applicant.