Improvement in Coverings for Pneumatio and Spring Tyres for Velocipede and other Wheels.
Year: 1896

page_text: Improvement in Coverings for Pneumatio and Spring Tyres for
Velocipede and other Wheels.
FREDERICK NUGENT COSBEY and JOHN NUGENT COSBEY, Shamrock Lodge
Sunbury Common Middlesex, Gentlemen, do hereby declare the nature of this
invention to be as follows:-
To improve and strengthen tyre coverings so as to greatly lesson their liability
to puncture &c.-This we propose doing by lining the inside of the tyre covering
with a layer of cork, the cork lining will thus come between the rubber & the
canvass back & in a most simple & effective manner immensely increase the
resisting power without adding much to the weight. For light work the usual
canvass back can be dispensed with & thus still further reduce the weight. Another
advantage is this, with the cork lining the thickness of rubber in front may be
reduced securing for the same strength less weight of material & at a less cost.
Dated this First day of September 1896.
Improvement in Coverings for Pneumatio and Spring Tyres for
Velocipede and other Wheels.
FREDERICK NUGENT COSBEY and JOHN NUGENT COBBEY, both of Shamrock
Lodge Sunbury Common Middlesex, Gentlemen 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 :-
To produce a tyre covering for velocipede and other wheels which whilst still
possessing elasticity resiliency and lightness shall be far less liable to puncture and
in a measure much less liable to break-downs from bursting etc.-which are the
great drawbacks to pneumatic tyre coverings hitherto made.
The novelty of construction consists in our placing a layer of cork between the
rubber and the usual canvas back of the tyre covering as shown in Fig. 1 at
point c.
Point a, represents the usual rubber covering.
Point e, indicates the usual canvas back or backing to rubber.
Point b, representa a solution of rubber which not only secures rubber (a.) to
layer of cork (c.) but in case rubber (a.) is punctured or broken, the said solution
helps to prevent wet or damp getting into the layer of cork (o), for a similar
reason we place a solution of rubber or other material at point (d) between layer
of cork (o) and canvas back (e), to prevent wet or damp getting through to the
canvas back (e) and thus helping the better to preserve it.

page_text: Cork as a substance combines in itself four qualities which no other known
material possesses to the same degree and extent, (which certainly guarantees its
great usefulness for the purpose desired) first in its great lightness, secondly its
elasticity, thirdly toughness of nature, and fourthly the extraordinary quality it
possesses of closing itself, whenever a puncture is made by any sharp substance,
and as three fourths of the damages to tyre coverings are caused through sharp
Bubstances cutting into them, it will be at once seen, the great advantage and
utility it will be having a layer of cork inserted in the manner we have described,
besides this tho advantage from cconimy in cost of material compared with that
.of rubber.
Now not only does the layer of cork inserted as described make in every way au
improved tyre covering, but we claim that when properly secured to the rim of a
wheel, you have an almost perfect pneumatic tyre without requiring an inner tube
of rubber.
In conclusion we beg to say we do not bind ourselves in any way to the size or
shape of a layer of cork to be inserted in tyre covering or to the particular
material wo may insert to secure it to the rubber on one side and to the canvas back
on the other side.
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 is
That the introduction of cork in the manner we describe is a novel and original
idea-making a most valuable improvement beyond anything ever before introduced
for strengthening tyre coverings and thus much lessening their liability to damage
from punctures etc.
F. N. COSBEY.
J. N. COSBEY.