Improved Means for Preventing Puncture in Pneumatic Tyres.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improved Means for Preventing Puncture in Pneumatic Tyres.
T
We, ALBERT LEGUILLIER and AUGUSTE DELIMOGES, Gentlemen, of 8, Avenue
de la Republique, Paris, in the Republic of France, do hereby declare the nature
of this invention to be as follows:-
This invention relates to puncture proof tyres and to a metallic protective
band which being suitably arranged in or beneath the outer cover of a pneumatic
tyre protects it against punctures by sharp objects on the road.
The protector according to this invention is constituted by a preferably endless
band comprising a series of steel blades or plates arranged obliquely relatively
to the edges of the tyre, and each enclosed in a canvas casing or pocket and out
to a suitable angle at its ends, the casings containing said plates being all sewn
or connected together and arranged so that the edge of one overlaps the edge
of the next, so that each of them overlaps the two adjoining strips, the latter
being arranged on each side in one straight line
In order to have the endless band of the same thickness through out the space
between two adjoining strips is filled with a layer of rubber solution, so as to be
flush with the outer surface of the casings of the strips. Then this band 18
preferably cemented or secured to the inside of the outer cover and the canvas
backing of said cover covers the band so as to prevent the inner tube from resting
on the protector.
The plates or strips may be also arranged one against another edge to edge
and a smaller strip placed over the meeting edges of two adjoining strips, which
smaller strips serve to cover the former and may be attached to them by lugs
or in any other way as long as the blades have a certain amount of movement
so as to allow them to adapt themselves easily to the curved shape of the tyle
and to bend under the weight to which the tyre may be subjected.
Wnes may be placed at each side of the protector in canvas sheaths to form
lateral springs a means for securing the cover.
It will be understood that with a tyre thus constituted although a sharp object
may perforate the outer cover, it will be invariably stopped by the metallic band
and will be unable to reach the inner tube.
Dated this 10th day of June 1898
BOULT & WADE,
Agents for the Applicants.
Improved Means for Preventing Puncture in Pneumatio Tyres.
We, ALBERT LEGUILLIER and AUGUSTE DELIMOGES, Gentlemen, of 8, Avenue
de la Republique, Paris, in the Republic of France, do hereby declare the nature
[Price 8d.1

page_text: of this invention and in what manner the same is to be performed, to be par-
ticularly described and ascertained in and by the following statement.-
Our invention relates to a protecting band conveniently placed between the
inside tube and outer cover of a pneumatic tyre for cycles or other vehicle, pio-
tecting thereby the tyre against puncture from any bodies it may pass over on
the road.
Fig. 1 represents a transverse section of a cover of a pneumatic tyre, in which
is arranged our protecting band
Figs. 2, 3 and 4 are views of flat sections of our protecting band showing the
different ways of making them.
Fig 5 is an enlarged view showing how the various elements composing our
protective band are connected together.
This protective band is principally made of thin metal preferably steel
plates e, e arranged obliquely to the edges of the tyre and cut at their end at a
convenient angle and preferably rounded off at the edges to prevent their injuring
the material with which they are in contact
These metal plates are so arranged as to overlap, so that each plate overlaps
er underlaps its two neighbouring plates The latter are placed at a convenient
distance from each other, and the ends or edges of the plates so arranged as to
he in the same straight line.
It is indispensible and herein lies one of the chief points characterising our
invention that the steel plates are aanged obliquely as regards the axis of the
tyre as has already been stated By this means a helicoidal arrangement of the
plates 18 obtained as regards the ant space in consequence of which the "gaping"
or opening of two adjoining plates, which occurs when the plates are placed at
right angles to the axis 16 avoided Moreover, the plates being longer, are more
elastic in their action.
་་
Our protective band is not made to exactly fit the tyre as regards width it
is generally somewhat narrower, and it is placed between two strips of canvas b
and c, Fig 1 sewn together at the edges and the strip bis preferably glued to
the inner side d of the cover In the arrangement shown in Fig 2 the plates e, e
are fastened to each adjacent plate by means of rivets g
In the arrangement represented in Fig 3, the plates are fastened by means
of two eyelets g¹ g' to the underlaying band h which may or may not be elastic
In this manner the plates not depending on each other, except by a band,
preferably elastic, form with the latter an unpuncturable band of great elasticity
and flexibility.
In order to strengthen the eyelets and to prevent any pointed body entering
the space formed by the cential holes of the eyelets we provide them on both
sides with small washers 2, Fig 5, and pass a rivet through the eye
In the arrangement as represented in Fig 4 the plates or blades are placed
between two bands of webbing or canvas & (which may or may not be elastic)
Bewn together at the edges m to which canvas each plate 18 fastened by means
of eyelets g¹, g¹ In this arrangement the blades not being inteipendent on
each other except by means of the elastic or inelastic canvas k, they form a
protecting band of perfect flexibility.
The protective band is placed and fixed outside the inner air tube of the tyre,
the ends slightly overlapping but not fixed to each other so as to permit the band
adapting itself to the diameter of the tyre which varies according to the pressure
of the air within it.
To protect the blades against rust produced by damp, they are preferably
galvanized or nickel-plated."
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim 18:-
1. Puncture proof bands for pneumatic tyres comprising a series of metallic

page_text: plates preferably galvanized or nickled arranged obliquely to the axis of the
tyre adjacent plates being connected to each other either by 11vets or by means
of an elastic or inelastic strip to which they are fastened by eyelets the cential
open spaces of which are fitted by rivets the plates being so arranged that each
plate overlaps or underlaps its two neighbouring plates and being placed at
required distances from each and so that the edges lie in a straight line
substantially as described
2 In puncture proof bands of the kind described the arrangement of plates
connected together by means of rivets substantially as described
3. A protecting band of the kind described comprising a series of plates (e, e)
of a supporting strip (h) preferably elastic, and eyelets (919¹) substantially as
described.
4. A protecting band of the kind described comprising a series of plates (e, e)
two canvas strips serving as a casing therefor and eyelets (9¹,9¹) substantially
as described.
5. A protecting band of the kind described washers (2) rivets (7) for strength-
ening and filling up the eyelets serving to fasten the plates to each other or to
the supporting band or casing substantially as described.
6 A protecting band of the kind described a series of blades with rounded
off edges in order to prevent the cutting of their enclosing casing substantially
as described.
7. An outer cover of a pneumatic tyre provided with a protecting band of the
kind described said band being contained in a casing the outer side of which 19
cemented to the inner side of the cover substantially as described.
Dated this 10th day of January 1800
BOULT & WADE,
Agents for the Applicants