Improvements in Pneumatic Wheel Tyres.
Year: 1891

page_text: Date of Application, 27th July, 1891
Complete Specification Left, 29th Mar., 1892-Accepted, 30th Apr., 1892
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Wheel Tyres.
I, JOSHUA VALENTINE EVES of Forth River Mill Belfast Mill Manager do.
hereby declare the nature of this invention to be as follows:-
This invention relates to the protection of the air tube in the pneumatic tyres
of bicycle or other wheels and consists in the application of a strip or strips of
horny or raw hide placed between the inner air tube and the outer skin of the tyre.
for the preservation of the inner air tube from damage.
Dated this Twenty-fifth day of July 1891
JOSHUA V. EVES.
COMPLETE SPECIFICATION.
Improvements in Pneumatic Wheel Tyres.
I, JOSHUA VALENTINE EVES, of Forth River Mill, Belfast, in the County of
Antrim, Ireland, Mill Manager, 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 is designed to provide for the protection of the air tube of
pneumatic tyres for bicycles, tricycles, and other vehicles.
It consists essentially in the insertion between the air tube and the outer rubber
tread or tyre or in the outer rubber tyre of a thin strip or strips of raw hide to
preserve and protect the air tube from damage occasioned by any sharp object
penetrating the tread or outer rubber.
It will be fully described with reference to the annexed drawings.
Fig. 1. Elevation of a length of the tyre with the outer rubber or tread in
section.
Fig. 2. Sectional elevation of a length of the tyre.
Fig. 3. Transverse section of same.
Fig. 4. Perspective view of a single strip or piece of raw hide.
Fig. 5. Elevation showing strips of raw hide before insertion in the tyre.
The tyre is constructed with an air tube A, usually with a tube or cover of
canvas, and an outer rubber tread or tyre B made in the ordinary way, and the
air tube supplied with the usual inflating valve.
Between the canvas cover of the air tube A and the outer tread B I place a
series of thin strips of raw hide a sufficiently hard to resist the abrasive or
penetrating action of a sharp object as the wheel passes over it and at the same
time sufficiently flexible not to interfere with the curving or bending of the tyre.
These strips shown in Figs 4 and 5 I prefer to mould or shape so that they will
embrace the outer half of the circumference of the air tube, and with rounded and
tapered edges as shown.
Each strip of thin raw hide is preferably cemented on the outer surface of the
air tube canvas cover or onto a tape as in Fig. 5 so that they can be more readily
inserted in position between the cover of the air tube and the outer tyre.
In practice I prefer to make each of the strips of thin raw hide about one and a
half inches wide one overlapping the next as shown and they may be made of any
conveient or suitable length to embrace a greater or less part of the circumference
of the air tube as may be required or found desirable.
Although I have shown the strips of thin raw hide placed direct upon the surface
of the cauvas cover of the air tube A, and cemented thereto, they may all be
D

page_text: cemented to a separate piece of canvas or rubber and in this formn be inserted
between the air tube and outside tyre without being cemented or attached to either
of them; or they may be inserted in the rubber of the outside tyre during
manufacture thereof.
Instead of a series of strips as represented a single strip may be used with
notches or slits at intervals to allow it to curve round the periphery of the tyre.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
In pneumatic tyres a strip or series of strips of raw hide interposed between the
air tube and the outer tread or tyre or inserted in the outer tyre for the purpose
of protecting the air tube from damage substantially as described.
Dated this 26th day of March 1802
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.