Improved Pneumatic Tyre.
Year: 1899

page_text: Improved Pneumatic Tyre.
I, JOSEF MISKOLCZY, of VI Magdalen Strasse, No. 26, Vienna, Austria, Manu-
facturer, do hereby declare the nature of this invention to be as follows:-
This invention relates to a construction of pneumatic tyre for cycle and other
road wheels which is of more easy manufacture than pneumatic tyres at present
in use, and has in addition the advantage that, within certain limits, the tyre
can be fitted to wheel rims or felloes of any construction. The invention consists
mainly in constructing the tyre of a tube that does not form a continuous circular
tyre, but has two separate ends each of which is closed air tight.
For the air tight closing of the ends any suitable means may be employed that
do not interfere with the elasticity of the tyre; it may for instance be advan-
tageously effected by the insertion of two slightly tapering plugs secured by
cementing and having their outer ends covered by a caoutchouc plate cemented
on.
The inner periphery of the tyre that comes in contact with the wheel rim may
be strengthened against frictional wear by means of a layer of hard rubber, canvas
or by metal insertions.
The pneumatic tube may be of any desired sectional form; thus it may be made
with a flat inner circumference having lateral projections or grooves for engaging
with the overhanging lips of a flat grooved rim or felloe. For securing the
abutting ends of the tube on the rim, there are embedded in the body of the tube
on the inner side near such ends, and if necessary at intermediate points, the
heads of screw bolts, these heads being inserted in the plastic mass before it is
vulcanised, so that the threaded bolts project inward from the tube, and in
appling this to the rim, are passed through corresponding holes in the latter, and
are secured on the inner side of the rim by nuts. The abutting ends of the tyre
may be closed in by a caoutchouc covering piece cemented on.
The two ends of the tyre may be connected internally by means of a small
bridge-shaped tube extending in looped form from the one end of the tube to
the other, so as to enable the air to circulate freely round the interior tyre as
in the case of continuous tubes.
Dated this 24th day of January 1899.
ADEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improved Pneumatic Tyre.
I, JOSEF MISKOLCZY, of VI Magdalen Strasse, No. 26, Vienna, Austria, Manu-
facturer, do hereby declare the nature of this invention and in what manner
[Price S1

page_text: the same is to be performed to be particularly described and ascertained in and
by the following statement:-
This invention relates to a construction of pneumatic tyre for cycle and other
road wheels which is of more easy manufacture than pneumatic tyres at present
in use, and has in addition the advantage that, within certain limits, the tyre
can be fitted to wheel rims or felloes of any construction. The invention consists
mainly in constructing the tyre of a tube that does not form a continuous circular
tyre, but has two separate ends each of which is closed air tight.
For the air tight closing of the ends any suitable means may be employed that
do not interfere with the elasticity of the tyre; it may for instance be advan-
tageously effected by the insertion of two slightly tapering plugs secured by
cementing and having their outer ends covered by a caoutchouc plate cemented
on.
The inner periphery of the tyre that comes in contact with the wheel rim may
be strengthened against frictional wear by means of a layer of hard rubber, canvas
or by metal insertions.
On the accompanying drawings are shewn pneumatic tyres constructed accord-
ing to the above described invention; Fig. 1 shews a cross section of one form of
tyre Fig. 2 shews a longitudinal section; Figs. 3 to 5 shew cross sections of
modified forms of the tyre and Fig. 6 shews a sectional elevation of a wheel with
the pneumatic tyre mounted thereon. As shewn at Figs. 1 and 2 the pneumatic
tyre consists of a length of tube 1 which, contrary to the constructions heretofore
employed is not formed as a closed ring. The open ends of this tube are each
closed air tight, for which purpose any known means may be employed that will
not interfere with the elasticity of the tube. Thus the closing of the ends may
be effected with advantage by means of slightly conical caoutchouc plugs 2 and 3
which are cemented into the ends of the tube and are finally enclosed by a
plate 4, 5,
By vulcanising both ends an air tight closure is obtained that does not interfere
with the elasticity of the tube. The valve nozzle 6 is connected to the tube in the
usual manner at the required point. As shewn at Fig. 1 the pneumatic tyre
can be strengthened at those points where the tyre is subject to wear in
contact with the wheel rim by means of plates 7 of vulcanite, woven fabric
or metal.
The section at Fig. 3 shews a tyre with convex outer periphery, Fig. 4 a tyre
of circular section, and Fig. 5 one with outer periphery formed of a pointed
arch shape.
Referring to Fig. 6, the fixing of the tyre upon the wheel rim is effected as
follows.
When moulding the pneumatic tyre, small plates 8 are placed in the mould, to
which plates are secured screw bolts or rivets 9.
Such plates are specially required at the ends of the tube, but they can also
be provided at other points in order to securely hold the tyre.
On mounting the tyre on the rim, the one end bolt is first inserted through the
hole in the rim, and is secured by screwing or riveting.
The tyre is then laid round the rim, each bolt being in succession passed
through the rim and secured.
The butt-joint of the two ends of the tube can be secured together by cement-
ing, and, if required, may be covered in by a cemented cover piece.
In order to prevent the air from becoming too much compressed at the closed
ends when running, the two ends may be made to communicate with each other
by a small tube, so that the air can circulate all round the tyre as in those of
ordinary construction. For this purpose tubes 10, 11 are fixed in the tyre near
the closed ends and are then connected together preferably by a flexible or
rigid curved tube 12, which can be fixed on after the tyre has been secured in its
place,

page_text: Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I claim is:-
1. A pneumatic tyre composed of a length of tubing 1, the two open ends of
which are hermetically closed by plugging, substantially as described.
2. In combination with a pneumatic tyre such as is referred to in the first claim,.
the use of bolts 9 for securing the tyre on the wheel rim substantially as described.
3. In a pneumatic tyre of the kind referred to in Claim 1, the use of a con-
necting tube 12 for establishing a communication between the two ends of the
tyre so as to allow the air to circulate round the same, substantially as described.
Dated this 3rd day of October 1899.
ABEL & IMRAY,
Agents for the Applicant.