Year: 1899

page_text: LIAIS, of 19, Avenue, Mac-Mahon, Paris, France, Engineer, de
hereby declare the nature of this invention to be as follows:---
This invention consists of a puncture-proof band or cover applicable to pneu
matic tyres.
The attempts made hitherto to render pneumatic tyres puncture-proof have
been unsuccessful for the two following reasons:-
1st. Materials having sufficient resiliency are not sufficiently hard and are
therefore readily punctured by nails, thorns, sharp stones &c., when employed in
the thicknesses allowable in pneumatic tyres.
2nd. Materials of sufficient hardness in general and metals in particular, are
not sufficiently resilient, and when introduced in a pneumatic tyre, they deprive
the latter to a great extent of its resiliency, and thus defeat the chief purpose
for which pneumatic tyres are used.
Now my invention has for its object to obviate the drawbacks mentioned above
and to render pneumatic tyres, such as are suitable for velocipedes, motor cars,
carriages, and other road vehicles generally, puncture-proof by the use of a pro-
tective band or cover without appreciably diminishing the resiliency of such
tyres. I construct this protective band or cover as follows:-
I take a metallic fabric or tissue preferably composed of a series of rings,
spirals, or coils of spring steel, wire or other suitable material or substance, in
which the several rings, spirals or coils are meshed, interwoven or interlaced
together as closely as possible so as to present very small interstices.
I subject this fabric or tissue to a compressing or flattening action preferably
by means of rolling so as to close or fill up the interstices. This has also the
esult of considerably reducing the thickness of the fabric or tissue.
In this manner a metallic sheet is produced which whilst possessing a suffi-
ient amount of elasticity, does not present any interstices through which hard
harp edged or pointed bodies can penetrate.
This metallic sheet is then cut into strips of suitable length and width. These
etal strips are then inserted between layers of cloth or canvas, and when so
overed, constitute puncture proof bands or covers which are intended to be
oplied to the covers, preferably between the covers and the air tubes or chambers
pneumatic tyres which are to be rendered puncture-proof.
In order to prevent the more or less rough edges of the metal strips damaging
e canvas, it is advisable to cover the metal strips with paper folded and pasted
gether at the edges of the strip.
CD

page_text: Puncture-proof bands or covers according to this invention may be made of
any desired thickness or protective effect, by simply varying the thickness of
the wire of which the original metallic fabric or tissue is composed.
Dated this 11th day of May 1899.
J. C. MEWBURN & ELLIS,
55 and 56, Chancery Lane, London, Chartered Patent Agents.
COMPLETE SPECIFICATION.
Improved Puncture-proof Band or Cover Applicable to Pneumatic
Tyres.
I, LUCIEN LIAIS, of 19, Avenue, Mac-Mahon, Paris, France, Engineer, 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 follow-
ing statement:
-
This invention consists of a puncture-proof band or cover applicable to pneu-
matic tyres.
The attempts made hitherto to render pneumatic tyres puncture-proof have
been unsuccessful for the two following reasons::
1st. Materials having sufficient resiliency are not sufficiently hard and are
therefore readily punctured by nails, thorns, sharp stones &c., when employed in
the thicknesses allowable in pneumatic tyres.
2nd. Materials of sufficient hardness in general, and metals in particular, are
not sufficiently resilient, and when introduced in a pneumatic tyre, they deprive
the latter to a great extent of its resiliency, and thus defeat the chief purpose
for which pneumatic tyres are used.
Now my invention has for its object to obviate the drawbacks mentioned above
and to render pneumatic tyres, such as are suitable for velocipedes, motor cars,
carriages, and other road vehicles generally, puncture-proof by the use of a pro-
tective band or cover without appreciably diminishing the resiliency of such
tyres. I construct this protective band or cover as follows:-
I take a metallic fabric or tissue composed of a series of spirals or coils of steel
wire or other suitable material or substance, in which the several spirals or coils
are meshed, interwoven or interlaced together as closely as possible so as to
present very small interstices. An example of a metallic fabric or tissue suitable
for the purpose of this invention is shown on an exaggerated scale in Figures 2
and 3 of the accompanying illustrative drawings.
I subject this fabric or tissue to a compressing or flattening action preferably
by means of rolling, so as to close or fill up the interstices. This has also the
result of considerably reducing the thickness of the fabric or tissue.
In this manner a metallic sheet is produced which whilst possessing a suffi-
cient amount of elasticity for the purpose in view, does not present any inter-
stices through which hard sharp edged or pointed bodies can penetrate.
This metallic sheet is then cut into strips m. (Figure 4) of suitable length and
width. These metal strips are then inserted between layers of cloth or
canvas, and when so covered, constitute puncture proof bands or covers which are
intended to be applied to the outer covers, preferably between the outer covers
and the air tubes or chambers of pneumatic tyres which are to be rendered
puncture-proof.
Figure 1 is a transverse section of a pneumatic tyre with my puncture proof
band applied thereto. E indicates the outer cover and C the air tube or air
chamber of the tyre; mtt represent the puncture proof band.

page_text: in order to prevent the more or less rough edges of the metal strips damaging
the canvas, it is advisable to cover the metal strips with paper folded and pasted
together at the edges of the strip.
Puncture-proof bands or covers made according to this invention may be of
any desired thickness or protective effect, by simply varying the thickness of
the wire of which the original metallic fabric or tissue is composed.
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:-
-
1. A puncture-proof band or cover for pneumatic tyres comprising a metallic
fabric or tissue which is formed of closely meshed, interwoven or interlaced
spirals or coils of wire flattened or rolled into sheet-form, substantially as herein-
before described.
2. A puncture-proof band or cover for pneumatic tyres, consisting of a strip
or strips of a metallic fabric or tissue of the kind specified in the preceding claini,
inserted between layers of cloth or canvas, substantially as herein before described.
Dated this 23rd day of June 1899.
J. C. MEWBURN & ELLIS,
55 and 56, Chancery Lane, London, Chartered Patent Acenta