An Improvement in or Addition to Pneumatic Tyres.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
An Improvement in or Addition to Pneumatic Tyres.
We, WILLIAM JETHRO STURGESS, of No. 83, Digbeth, City of Birmingham, in the
County of Warwick, Engineer, WILLIAM ASHCROFT, of No. 13, Stratford Avenue,
Highgate, Birmingham, in the County aforesaid, Manufacturer's Agent, and MARY
EMILY BIRD (Mrs.), of No. 23, Frances Road, Edgbaston, Birmingham, also in the
County aforesaid, do hereby declare the nature of this invention to be as
follows:-
This invention relates as hereinafter described to an improvement in or addition to
pneumatic tyres and has for its object to provide a means whereby such tyres are!
provided with a simple and efficient device to minimise puncture. Pneumatic tyres
of ordinary construction have a serious disadvantage in their liability to puncture
thereby causing great delay in locating and repairing the same. By our invention
these disadvantages are overcome.
Our invention is applicable to tubulous tyres or tyres with a single tube or
tubes.
Our invention consists essentially in attaching a supplementary band or strip
preferably of pure rubber, along the side of the inside of the "tread." The said
strip is attached to the inside by one edge leaving the remainder thereof loosely
circumvesting the inside of the tyre. When the said tyre becomes punctured by
ordinary means such for example as by tacks small nails, thorns or the like the band
or strip is simply depressed in the area of the tyre. On withdrawing the foreign
agent that has pierced the tyre a slight escape of air takes place which causes the
band to be drawn against the inner surface of the "tread." In cases where a single.
tube is used the tube is slightly depressed with the supplementary band. We may
in some cases use two of the said supplementary bands, which may or may not
overlap the said bands being attached by one edge from the side of the tyre.
Dated this 27th day of February 1897.
An improvement in or Addition to Pneumatic Tyres,
We, WILLIAM JETHRO STURGESS, of 83, Digbeth, Birmingham, County of Warwick,
Engineer, WILLIAM ASHCROFT, of 13, Stratford Avenue, Highgate, Birmingham,
County aforesaid, Manufacturer's Agent, and MARY EMILY BIRD (Mrs.), .of No. 23,
Frances Road, Edgbaston, Birmingham, also County aforesaid, do hereby declare the
Price 8d 1

page_text: 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 relates as hereinafter described to an improvement in or addition to
pneumatic tyres and has for its object to provide a simple and efficient device to
obviate puncture. Pneumatic tyres of ordinary construction have a serious
disadvantage in their liability to puncture which causes great delay in locating and
repairing same.
By our invention these disadvantages are overcome. It is applicable to tyres
with or without a single tube or tubes. Our invention consists essentially in
attaching a supplementary band or strip preferably of pure rubber, along the inside of
the tread.
The strip is attached by one edge leaving the remainder thereof loosely circum-
vesting the inside of the tyre. When the tyre becomes punctured by ordinary means
such for example as by tacks, small nails, thorns, or the like, the band or strip is
simply depressed in the area of the tyre. On withdrawing the foreign agent that has
pierced thie tyre a slight escape of air takes place causing the band to be drawn
against the inner surface of the tread. In cases where a single tube is used it is
slightly depressed with the supplementary band. We may in some cases use two of
the said bands which may or may not overlap being attached by one edge from the
side of the tyre.
We will describe our invention by reference to the accompanying drawings.
Figure 1 illustrates in cross section a pneumatic tyre flattened out showing the
position of the supplementary band A which is attached at D.
Figure 2 shows the tyre ready for insertion in the rim the band A taking the
curve of the tyre on the inside of the tread; B showing the inner tube.
Figures 3 and 4 show a similar band to that in Figures 1 and 2 but made wider so
as to cover a greater surface of the tyre.
Figure 5 in. cross section and plan shows the supplementary band Acovering the
entire surface of the tyre and overlapping the joint at E thus making the same air
tight. This may or may not be used as a tubeless tyre.
Figure 6 shows the cross section of a pneumatic tyre in which two bands are used A
and A2 one overlapping the other. When the tyre becomes punctured by a thorii,
nail, or the like the band A is depressed, and on withdrawing the piercing agent a
slight escape of air takes place causing the band to be drawn against the inner
surface of the tread thus covering up the puncture.
Having now particularly described and ascertained the nature of our inven-
tion and in what manner the same is to be performed we declare that what we
claim is:
1. The Improvement in or Addition to Pneumatic Tyres consisting of the band A
or bands A and A2 substantially as described and for the purpose set forth.
WILLIAM HENRY BARACLOUGH,
36, Temple Street, Birmingham, Agent for the Applicants.