Improvements in Segmental Tyres.
Year: 1899

page_text: I, EMILE POIZOT, of 101, Faubourg St. Denis, Paris, France, Engineer, do
hereby declare the nature of this invention to be as follows:-
The subject of the present invention is a segmental tire or hoop intended for
the wheels of carriages, motor cars, tricycles, and for all other vehicles rolling
upon common roads.
This tyre or hoop consists of a series of hollow stumps or fragments of elastic
caoutchouc, that is to say of a series of elastic caoutchouc tubes, so mounted as to
form butt joints, together, upon the felly of the wheel which it is desired to render
silent running.
These stumps or fragments or tubes are fixed in place upon the felly of the
wheel by means of segments placed in the interior, and by coach bolts upon the
extremities of two neighbouring segments.
04
1
•
2000
J. P. BAYLY,
18, Fulham Place, London, W., Agent for the Applicant.
Improvements in Segmental Tyres.
I, EMILE POIZOT, of 101, Rue du Faubourg St. Denis, Paris, in the Republic of
France, 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:-
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The subject of the present invention is a segmental tyre intended for the wheels
of carriages, motor cars, tricycles, and all other vehicles running on common
roads, comprising a series of segments or pieces or tubes of caoutchouc or india-
rubber hollow, mounted end to end, and jointed upon the felly or rim of the wheel
to which it is to be applied and the running of which it is desired to render
noiseless.
The annexed drawing, which is given by way of example, illustrates one method
of carrying the said invention into practice.
In this drawing:
Fig. 1, is a section of the tyre on a plane passing through the axis of the wheel
to which it is fitted.
Fig. 2, is a section of the same tyre on a plane perpendicular to the same axis.
Fig. 3, is a diagrammatical view showing the tyre mounted upon its wheel.
[Pine R71

page_text: The segments of the above mentioned tubes: A, B, C, are arranged upon the
felly or rim of the wheel the one following the other and being joined or jointed
together according to the plan m n (Fig. 2,) and in such a manner as to form a
complete circle which constitutes the tyre.
These segmental pieces or tubes are fixed to the felly or rim of the wheel by
means of segments K formed of steel or wood, and placed on the interior of the
said segmental pieces, and of T headed bolts L which ride on the two adjacent
extremities of two of the adjoining segmental pieces K.
The arrangement of the tyre which forms the subject of the present invention
admits of any one of the segmental pieces that may be worn out or damaged
being replaced by another or new segmental piece, without having to discard the
rest of the tyre, without interfering in any way with the undamaged segmental
pieces, and without having to take the wheel off its axle. Moreover it is far
easier to mould a caoutchouc or indiarubber tube of 15 or 20, or 30 centimetres
for example, than it is to mould an entire tyre, which latter operation requires
great care, a cumbrous mould, costly and heavy to manipulate, without taking
into account the large vulcanizer which is required to hold it during the vulcaniz-
ing operation. Lastly, each segment being moulded to a radius smaller than that
of the wheel to which it is to be applied, there results, when it is placed in posi-
tion, a straightening out which produces a slight compression of the material on
the circumference which comes in contact with the ground, which is a condition
very favourable to a reduction in wear.
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:.
1. A segmental tyre intended for the wheels of carriages, motor cars, tricycles,
and of all vehicles running upon common roads, comprising segmental pieces of
caoutchouc or indiarubber tubes bent or curved to a radius slightly smaller than
that of the wheel to which they are to be applied arranged upon the felly or rim
of the said wheel, the one following the other, so as to form the tyre, and con-
nected to the above mentioned felly or rim by means of segments of steel or hard
wood, and headed bolts each arranged to bear or press upon the adjacent ends
of two neighbouring segments, as described and illustrated.
2. A segmental tyre intended for the wheels of vehicles, motor cars, tricycles
and of all vehicles running upon common roads, substantially as described and
illustrated
this 20th day of December 1999.
J. P. BAYLY,
18, Fulham Place, London, W., Agent for the Applicant.