Year: 1896

page_text: Date of Application, 19th June, 1898
Complete Specification Left, 6th Nov., 1896-Accepted, 13th Feb., 1897
A communication from EDWARD DAVIES, Architect, and ARTHUR HARRISON,
Clerk, both of No. 21, King William Street, Adelaide, in the Province of
South Australia.
I, Alfred JULIUS BOULT, of 111, Hatton Garden, in the County of Middlesex,
Chartered Patent Agent, do hereby declare the nature of this invention to be as
follows:-
This invention relates to an improved metallic protector for the purpose of
rendering puncture proof, pneumatic tyres. For this purpose there is inserted in
any suitable way between the outer portion of the tyre and the inner air tube a
protector of special construction. This improved protector is constructed of two
bands of thin sheet steel aluminium or other suitable material. The two bands are
of a serpentine form of construction and their serpentine folds or convolutions are
interwoven or interlocked being passed alternately over and under one another.
The two loose ends are secured in a similar manner and in this way the circle is
completed, and a ring or complete circlet obtained corresponding to the size of the
tyre to which it is to be applied. The pitch of the serpentine folds or convolutions
may be altered; according to the size of the wheel to which the protector is to
be applied. Thus in large or carriage wheels it may be advisable to employ a
protector formed of bands having a long pitch; whereas in bicycles and other
similar wheels it may be advisable to employ a protector formed of bands the
serpentine folds or convolutions of which have a shorter pitch. My foreign corre-
spondents wish it to be well understood that they employ any pitch as found most
desirable. It will be evident that the shorter the pitch the greater the flexibility
of the protector.
The protector so constructed and preferably after being interwoven is passed
between rolls; or by other suitable means there is imparted to it the same curve
as that of the tyre, to which it is to be applied. As a result of its shape and
elasticity the protector will assist the tyre to resist the tendency to flatten under
pressure and to render it quicker in assuming its normal shape when such pressure
is removed. Being itself entirely flexible it will in no way lessen the elasticity of
the rubber, but will assume any shape which the latter may acquire in practical
working. To prevent oxidation and to preserve the protector it may be coated with
rubber, or covered with any suitable material.
Dated this 19th day of June 1896.
BOULT & WADE,
Agents for the Applicant.

page_text: Improvements in or relating to Protectors for Pneumatic Tyres.
A communication from EDWARD DAVIES, Architect, and ARTHUR HARRISON,
Clerk, both of No. 21 King William Street, Adelaide, in the Province of
South Australia...
I, ALFRED JULIUS BOULT of 111 Hatton Garden in the County of Middlesex,
Chartered Patent Agent, 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 relates to an improved metallic protector for the purpose of
rendering puncture proof, pneumatic tyres. For this purpose there is inserted
in any suitable way between the outer portion of the tyre and the inner air tube a
protector of special construction. This improved protector is constructed of two
bands of thin sheet steel aluminium or other suitable material. The two bands are
of the construction as shown in the accompanying drawings and their serpentine
folds or convolutions are interwoven or interlocked being passed alternately over
and under one another in the manner as shown. The two loose ends are secured in
a similar manner and in this way the circle is completed, and a ring or complete
circlet obtained corresponding to the size of the tyre to which it is to be applied.
The pitch of the serpentine folds or convolutions may be altered as shown in the
accompanying drawings, according to the size of the wheel to which the protector
is to be applied. Thus in large or carriage wheels it may be advisable to employ
a protector formed of bands having a longer pitch as shown in Figure 1; whereas
in bicycles and other similar wheels it may be advisable to employ a protector
formed of bands the serpentine folds or convolutions of which have a shorter
pitch as shown in Figure 2. My foreign correspondents wish it to be well under-
stood that they employ any pitch as found most desirable. It will be evident
that the shorter the pitch the greater the flexibility of the protector.
The protector so constructed and preferably after being interwoven is passed
between rolls; or by other suitable means there is imparted to it the same curve as
that of the tyre to which it is to be applied. As a result of its shape and elasticity
the protector will assist the tyre to resist the tendency to flatten under pressure and
to render it quicker in assuming its normal shape when such pressure is removed.
Being itself entirely flexible it will in no way lessen the elasticity of the rubber,
but will assume any shape which the latter may acquire in practical working. To
.prevent oxidation and to preserve the protector it may be coated with rubber, or
covered with any suitable material.
Having now particularly described and ascertained the nature of the said inven-
tion as communicated to me by my foreign correspondents and in what manner the
same is to be performed I declare that what I claim is ;-
1. A protector for pneumatic tyres composed of two bands having serpentine
folds or convolutions of any desired pitch interwoven or interlocked substantially
as herein described.
Dated this 4th day of November 1896.
BOULT & WADE,
Agents for the Applicant.