Improvements in or relating to Pneumatic Tyres for Cycle and other Vehicle Wheels.
Year: 1893

page_text: Date of Application, 9th Feb., 1893
Complete Specification Left, 9th Nov., 1893-Accepted, 9th Dec., 1893
PROVISIONAL SPECIFICATION.
Improvements in or relating to Pneumatic Tyres for Cycle and
other Vehicle Wheels.
I, HUGH FAULKNER of Rockleigh, London Road, Leicester, Rubber Manu-
facturer, do hereby declare the nature of this invention to be as follows:-
This invention has reference to pneumatic tyres for cycle and other vehicle
wheels and is designed with a view of providing a self-repairing air tube for
use therewith, i.e. an air tube, which in the event of it becoming punctured will
prevent the escape of the air and the collapse of the tyre.
For this purpose my invention consists in the use of one or more preferably
tubular linings or equivalents of rubber, oiled silk or other suitable material
placed within the usual air tube of a pneumatic tyre.
The air tube may be inflated with air or gas under compression in the usual
way & the linings allowed to lie loose therein so as to be capable of moving about
or shifting their positions relatively to each other during the time the wheel is in
action. Or if necessary I may also inflate one or more or all of the said linings
to any desired extent.
The usual valve (only one of which is employed) may communicate with the
usual air tube or any one or more of the inner linings.
Dated this 9th day of February 1893
W. P. THOMPSON & BOULT,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or relating to Pneumatic Tyres for Cycle and
other Vehicle Wheels.
I, HUGH FAULKNER of Rockleigh, London Road, Leicester, Rubber Manu-
facturer 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 has reference to pneumatic tyres for cycle and other vehicle
wheels and embodies improvements having for their object to minimise the risk of
a tyre collapsing after being punctured, or in the event of a puncture taking
place and the air escaping as a consequence, to permit the tyre to be immediately
re-inflated ready for use without the necessity of patching or bringing into
requisition any of the repairing processes now in use.
A pneumatic tyre constructed in accordance with this invention possesses what
may be termed a "self-repairing" air tube or air chamber, hereinafter fully
described.
My improved tyre may be constructed with one or more preferably endless
tubular linings to the air tube, or the latter may be composed of a number of these
said linings, one fitted within the other and provided with a single air filling tube
and valve.
The invention is not limited to any particular kind of pueumatic tyre and
therefore the section of a pneumatic tyre and a wheel rim illustrated in the
accompanying drawing is only intended as an aid to a clear understanding of the
invention.
A represents the outer cover of a pneumatic tyre which may be constructed in

page_text: any of the well known forms: B is an ordinary wheel rim and C the usual air
filling tube and valve communicating with the air tube or chamber.
The air tube or air chamber of a pneumatic tyre may consist of or be provided
with, preferably two or more tubular linings placed one within the other as shown
and having a single air filling tube which communicates with the internal or central
lining as indicated.
In the section shown, four tubular linings D, D1, D2, D3, are employed as being
a convenient number, it is obvious however, that the number may be readily varied
as circumstances require.
In actual practice these endless tubular linings are made a trifle, say one inch
shorter than each other so as to permit of a slight movement one within the
other.
In a tyre having a removable outer cover the multiple endless tubular linings by
preference constitute the air chamber, or the said linings may be used in addition
to the usual air tube.
In a tyre provided with multiple endless tubular linings as described the
puncturing instrument has several walls or thicknesses of rubber or material to pass
through before the air will escape, while the said instrument may not pass through
more than one or two of the said linings.
Should however a successful puncture take place and the air escape the fact
that the tubular linings are loose one within the other except at the point where
they are connected to the air filling tube, will permit those portions of the linings
near the "tread" of the tyre to slightly vary or alter their relative positions and
if this is only in a very small degree it will invariably be sufficient to cover the
puncture and thus permit the tyre to be successfully re-inflated.
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 pneumatic tyre for vehicle wheels consisting of a removable outer cover,
air chamber, one or more endless tubular linings and a single filling tube and
valve substantially as and for the purpose described.
2. A pneumatic tyre for vehicle wheels consisting of a removable outer cover, a
multi-tubular air chamber and a single air filling tube and valve substantially as
and for the purpose described.
3. The combination in a pneumatic tyre for vehicle wheels of endless multi-
tubular linings and a single filling tube and valve substantially as aud for the
purpose described..
Dated this 8th day of November 1893.
W. P. THOMPSON & BOULT,
Agents for the Applicant.