Improvements in Construction of Pneumatic Tyres to Prevent Punctures and Simplify Attachment to Rim of Wheel.
Year: 1897

page_text: Improvements in Construction of Pneumatic Tyres to Prevent
Punctures and Simplify Attachment to Rim of Wheel.
JOHN CLARENCE HAY PIERSON, Merchant, of 9 Dulwich Wood Park, Norwood, S.E.,
do hereby declare the nature of this invention to be as follows:-
According to this invention I provide the outer casings of pneumatic tyres with a
puncture proof lining consisting of a continuous woven wire net extending the whole
width of the casing and whose selvedges at either side secure the tyre in position
on the rim when the casing is distended by inflation of the inner (air) tube. This
puncture-proof lining I coat with rubber or other suitable material to complete the
casing. The woven wire lining I make of wire of suitable metal (in some cases steel
in others aluminium) & of suitable thickness & closeness of mesh to prevent
puncture of inner (air) tube & I prefer to use tissues woven of helical wires similar,
to the "tissu allemand " referred to by J. H. Johnson in his (expired) patent
No. 2543 of 1880.
Dated this 28th day of Santamber 1897
Improvements in Construction of Pneumatic Tyres to Prevent
Punctures and Simplify Attachment to Rim of Wheel.
I, JOHN CLARENCE HAY PIERSON, of 9 Dulwich Wood Park, Norwood, S.E.,
Merchant, 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 pneumatic tyres and has for its principal object to provide
an improved fabric or backing for the covers of the same. It consists in substituting
for the usual canvas or other fabric a lining of a flexible mail which is practically
non puncturable.
I would wish to have it understood that I do not make use of any kind of metal
gauze, but I employ a light flexible continuous wire lining as hereafter described.
In carrying out my invention I use a lining of a material such as,--or very similar
to-the "tissu allemand" described by J. H. Johnson in his Patent No. 2543 of 1880,
(a communication to him from abroad by J. A. J. Liebermann of Paris). This
material is composed of helical wires entwined or locked together by causing the
coils of one helix to engage the coils of other helices.

page_text: It may be manufactured in the way described in the specification of the Patent
above referred to, or in any other suitable manner, and of any suitable material.
Preferably I employ aluminium on account of its lightness and non-liability to rust,
but where I use other metals, I may, if desired, tin or otherwise suitably coat the
strands. The lining extends longitudinally around the cover of the tyre (which latter
may be of the "single tube," "double-tube". .or "tubeless" variety) either on the
inside thereof in which case it may be attached to the same by stitching, or in any
other suitable manner-or it may be moulded in the cover during the formation of
this latter.
This mail lining may be formed in endless lengths or the ends of a suitable strip
may be connected together in the manner described by the said J. H. Johnson,
lines 52 and 53, page 3, and lines 1 and 2, page 4, of his specification. By care in
manufacture it will be found possible to so form the mesh of the mail that longi-
tudinally it will be almost inextensible but laterally it will be found exceedingly
flexible and very slightly inferior, if at all, in this respect, to the best fabric hitherto
used.
In double-tube tyres and when the mail is attached to the inside of the cover, it
may be found advantageous to provide a suitable tape between the air tube and the
mail lining to prevent chafing of the tube.
Where the cover is attached to the rim of the tyre by means of inextensible edges,
I may form the selvedges of the mail lining of a double, or an extra thickness to act
as cores in the usual manner.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed, I declare that what I
claim is :-
In pneumatic tyres, a fabric attached to or moulded within the cover of the tyre,
consisting of a flexible mail lining such as or similar to the "tissu allemand" herein
referred to, substantially as described.
Dated this 2nd day of November 1897.
For the Applicant,
GEDGE & FEENY,
Chartered Patent Agents, 60 Queen Victoria Street, London, E.C.