Improvements in or relating to Pneumatic Tyres.
Year: 1896

page_text: 1, HORATIO JOHN HEINZE of 16 East Road, City Road, County of Middlesex,
Mechanical Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to pneumatic tyres, the object being to automatically close
a puncture as soon as made.
In carrying out this invention I cover the air tube at the tread side, and for so
far round as may be desirable, with silk or other practically inextensible material,
or 1 otherwise so form or treat the air tube at the parts liable to puncture as to
prevent it stretching.
I cover the inside of the tube with flaps or pieces of oiled silk, very thin rubber
or other suitable material arranging these on the fish scale principle, so that they
overlap and cover the tyre at all parts where punctures are to be expected. The
scales may be fixed by solution, or they may be prepared and secured together and
applied complete to the air tube.
The inextensible material or quality may be applied to the air tube at the inside
instead of the outside, if it be so arranged as to prevent leakage when the scale
closes the puncture.
BOULT & WADE,
Agents for the Applicant.
Improvements in or relating to Pneumatic Tyres.
I, HORATIO JOHN HEINZE of 16 East Road, City Road, in the County of
Middlesex, Mechanical 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 following 'statement:-
This invention relates to pneumatic tyres, the object being to automatically close
a puncture as soon as made.
In carrying out this invention I cover the air tube at the tread side, and for so
far round as may be desirable, with silk or other practically inexteusible material,
or I otherwise so form or treat the air tube at the parts liable to puncture as to
prevent it stretching.
I cover the inside of the tube with flaps er pieces of oiled silk, very thin rubber
or other suitable material arranging these on the fish scale principle, so that they
overlap and cover the tyre at all parts where punctures are to be expected. The
scales may be fixed by solution, or they may be prepared and secured together and
applied complete to the air tube.

page_text: In the accompanying drawings:-
Figure 1 is a view of the interior of the improved air tube for a pneumatic
tyre.
Figure 2 is a longitudinal section of a modified arrangement of the same.
Like letters indicate like parts throughout the drawings.
The air tube A has a strip B of inextensible material upon its tread side and a
series of overlapping flexible flaps C attached to its interior surface in the manner
illustrated in Figure 1.
In the event of the air tube A being punctured the flaps on the inner side are
held over the puncture by the pressure of the air thus preventing any leakage.
The flaps in place of being attached directly to the wall of the air tube
may be secured to a separate strip which in turn is fixed to the interior of the
air tube.
The air tube A may if desired have the inextensible strip B attached to its
interior surface, the flaps C being then attached to the inner surface of the strip B
as shown in Figure 2.
The inextensible material in each case prevents the flaps from drawing apart by
the expansion of the air-tube and thus ensures every part of the tread being
covered by a flap.
It must be understood that although I prefer to form the overlapping flexible
flaps C of the shape and arrange them in the manner shown in the drawings, yet
this shape may be varied as also the arrangement, for instance the shape may be
made broader and made to extend right across the tread.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, 1 declare that what I
claim is :-
1. In a pneumatic tyre the combination with self-closing flaps such as C of an
inextensible support such as B substantially as and for the purpose described.
2. In a pneumatic tyre the combination with the air tube of a strip of inextensible
material outside the tube and overlapping flexible flaps substantially as and for the
purpose described.
3. In a pneumatic tyre the combination with the air tube of a strip of inextensible.
material attached to the interior of the latter and carrying a series of overlapping
flexible flaps substantially as and for the purpose described.
4. The complete air tube for a pneumatic tyre substantially as described and
illustrated in Figure 1 or Figure 2 of the accompanying drawings.
Dated this 29th day of March 1897.
HORATIO JOHN HEINZE,
Boult & Wade,
Agents for the Applicant.