provements in Tyres for Cycles and other Vehicles.
Year: 1897

page_text: Date of Application, 24th.June; 1897-Accepted, 31st July, 1897
COME LEIE DIECIFICATION
Improvements in Tyres for Cycles and other Vehicles.
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I, HEINRICH MANNES of 5 Blumenstrasse, Augsburg in the Kingdom of Bavaria,
Mechanician, do hereby declaro 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 :-
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This invention relates to tyres for cycles and other vehicles and consists in the
improved arrangement or construction of pneumatic lyres combined with a cushion
contained in the inside of the pneumatic tyre cover and so arranged, that notwith-
standing the eventual escape of the air the tyre can conveniently be used for riding.
A separate air tube may be placed inside the tyre with this arrangement or may be
omitted,
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On the drawing appended hereunto tyre: made in accordance with my invention are
shewn in several forms of execution.
Figures 1, 3, 5 and 7 shewing vertical cross sections of the several modified
forms, and
Figures 2, 4, 6 and 8 corresponding vertical longitudinal sections.
The pneumatic tyres hitherto used have the disadvantage that when through a
puncture or other damage of the tyre the air escapes from it, the rider has to ride on
the felloc or push his machine before him. This disadvantage is removed by my
improved construction, viz by arranging in the inside of the tyre or tyre jacket a
cushion, which may be constructed in various ways and when the compressed air
escapes, acts as a cushion tyre,, so that the rider does not ride on the tyre or jacket
pressed flat upon' the felloe but can continue his ride comfortably on a cushion tyre,
the weight of which need not be greater than that of the present pneumatic tyres, as
the inner air tube can be entirely omitted.
In the arrangement represented in Figures 1 and 2, the jacket a, as in the ordinary
pneumatic tyres, consists of grey indiarubber combined with canvas, and the inserted
cushion b of Para or other rubber, which rests on the felloe c and is so connected with
the jacket that the whole forms an air tight tube, so that a special inserted air tube .
is not required. The joints between the cushion and jacket may be cemented or
made tight by the pressure between them. The cushion presses the edges of the
jacket into the grooves on the felloe. When in consequence of any damage the tyre
becomes deflated, the tread of the jacket will lay itself against the outer surface of the
cushion and permit the rider comfortably to continue his ride. To increase the
elasticity of the cushion and to facilitate the putting on and taking off of the tyre,
the bearing surface of the inserted cushion on the felloe may be formed with a
groove & above the spoke heads.
In the modification shewn in Figures 7 and 8, besides the inserted cushion b resting
on the felloe, a second insertion b is placed underneath the tread part of the jacket so
that when the air escapes the rider rides on both insertions, the cushions b and b¹
being pressed upon each other. In Figures 5 and 6 the second insertion b¹ is retained,
but the cushion resting on the felloe is shaped as a flat hoop g surrounding the
felloe, which when the air escapes supports the ring b¹ so that the rider rides on
the two.

page_text: A somewhat modified construction is shewn by Figures 3 and 4 in which the india-
rubber insertion or cushion b reaches from the felloe to the tread and is perforated
with holes e for the purpose of establishing a communication between the air spaces
on each side and of rendering the cushion more elastic. When the air escapes from
the tyre, the rider rides on a very elastic cushion tyre, the weight of which also.is
only inconsiderable.
All the different constructions of the combined; pneumatic and cushion tyre
herein before described have the great advantage, that notwithstanding the escape of
the air the riding can be conveniently continued. The inflating valves are connected
by rubber tyres or otherwise to passages in any convenient manner. In some cases,
separate air tubes may be used.
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
Firstly. The manufacture or construction of pneumatic tyres for cycles and other
vehicles, consisting of a tyre jacket and a cushion or cushions inside the jacket so
arranged that when the tyre is deflated the cushion supports the wheel and its load
and prevents the jacket from being pressed flat on the felloe and damaged,
substantially as hereinbefore described and illustrated by the drawings.
Secondly. The construction or arrangement of a pneumatic tyre combined with a
cuslion in which tlie cushion rests upon the felloe and forces the edges of the jacket
into the grooves of the felloe substantially as herein before described with reference to
Figures 1 and 2 of the drawings.
Thirdly. The construction or arrangement of a pneumatic tyre combined with a
cushion in which the cushion is arranged on the inside or the tread part of the jacket,
and the edges of the jacket secured in grooves of the felloe by an elastic hoop or
equivalent means substantially as hereinbefore described with reference to l'igures 5
and 6 of the drawings.
"Fourthly. The construction or arrangement of a pneumatic-tyre.combined with two
cushions one of which is arranged on the inside of the tread.part of the tyre jacket
and the other on the felloe between the edges of the jacket, substantially as herein-
before described with reference to Figures 7 and 8 of the drawings.
Fifthly. The construction or arrangement of a pneumatic tyre combined with a
cushion inside the tyre jacket extending from the felloe to the tread part of the tyre
and perforated with holes substantially as herein before described and illustrated by
Figures 3 and 4 of the drawings.
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