An Improved Pneumatic Tyre for the Wheels of Velocipedes and other Vehicles.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
An Improved Pneumatic Tyre for the Wheels of Velocipedes and
other Vehicles.
I, GASTON GRILLET, of 21, Boulevard Poissonniere, Paris, in the Republic of
France, do hereby declare the nature of this invention to be as follows:-
This invention relates to a pneumatic tyre of improved construction applicable
to the wheels of velocipedes and other vehicles of every description.
The improved tyre is represented in the accompanying drawings, in which
Figure 1 is a cross-section of the tyre mounted upon the rim ;
Figure 2 is a cross-section of the tyre detached;
Figure 3 is a cross-section of the metal tube intended to connect the edges of
the tyre.
Figure 4 is a portion of the tyre closed by means of a length of metal tube; and
Figure 5 is a metal piece which may be used as a substitute for a tube in joining
together the edges of the tyre.
The tyre is formed by a case consisting of an endless band A of retractile or
diagonally woven fabric or canvas placed aslant, wholly or partially covered with
an indiarubber sheath 1); the edges of the said band A. terminating in flanges
such as C and C¹.
These flanges are so connected is to form, together with the casing one continuous
tube forming the air chamber I
To this end I slide a tube E of metal or any other suitable material over the
flanges C, C, so as jointly to enclose them; the said tube being split at the top
and curved so as to fit, or accommodate, the inner diameter of the rim H.
The slot or groove of the tube E is somewhat wider than the two pieces I and J
taken together, but narrower than the flanges C and C¹.
The metal tube E may be made in one piece, in which case its diameter should
be the same as that of the interior of the rim H and should be curved accordingly.
There may be a break or interstice at some convenient part thereof enabling it to
be readily removed from the rim when required.
The tube E may be divided into as many lengths as may be desired, provided
that the arrangement when completed corresponds to the inner diameter of the
rim.

page_text: In order to enable the tube E, or portions of such tube, to slide along the
flanges CC, these flanges are divided into sections at one or more points, so as to
afford the passage for the said tube.
The tyre containing the air chamber D and being thus closed by the tube or
length of tube D, is placed upon the rim of the wheel.
This operation does not require any special effort, seeing that the tyre may be
extended in length; and the metal tube which keeps it closed should have a break
or joint at one point at least.
After placing the tyre upon the rim of the wheel, the air chamber is inflated
in the ordinary manner.
Under the pressure, the tyre will then increase the diameter by contracting
along its circumference, thereby causing the metal tube to close at the joint, to firmly
adhere to the bottom surface of the rim, and to exercise a powerful compressing
action upon the latter.
It is not absolutely necessary to employ a metal tube such as B for keeping
the two flanges C and C¹, joined together.
For inasmuch as the metal tube only acts at the parts I and J of the case, there
may be employed, as a substitute for such tube, any suitable piece or device made
either of metal or of any material fit to be used for the purpose, which will enable
the parts I and J of the casing to be tightly compressed.
Thus there may be employed one or two pieces such as E C. Figure 5, formed
of two rods adapted to compress the parts I and J of the casing of the tyre; such
two rods being fitted with a number of transverse fasteners capable of accommodat-
ing the shape or outline of the flanges C C¹ in the same manner as does the tube E
above referred to.
•
Or the air chamber within the case may be dispensed with, in which case it is
only necessary, to line the interior of such case with indiarubber so as to render it
damp-proof; the two flanges being wedged together, as it were, sufficiently tightly
to allow of no escape of air between them.
TX
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HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents of the Applicant.
An Improved Pneumatic Tyre for the Wheels of Velocipedes and
other Vehicles.
I, GASTON GRILLET, of 21, Boulevard Poissonniere, Paris, in the Republic of
France, 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 a pneumatic tyre of improved construction applicable
to the wheels of velocipedes and other vehicles.
The improved tyre is represented in the drawings left with my Provisional
Specification in which
Figure 1 is a cross-section of the tyre mounted upon the rim;
Figure 2 is a cross-section of the tyre detached;
Figure 3 is a cross-section of the metal tube intended to connect the edges of
the tyre.
Figure 4 is a portion of the tyre closed by means of a length of metal tube;
and

page_text: Figure 5 is a metal piece which may be used as a substitute for a tube in join-
ing together the edges of the tyre.
The tyre is formed by a case consisting of an endless band A of retractile or
diagonally woven fabric or canvas placed aslant, wholly or partially covered with
an indiarubber sheath B; the edges of the said band A terminating in flanges
such as C and C¹.
These flanges are so connected as to form, one continuous tube enclosing the
air tube D.
To this end I slide a tube E of metal or any other suitable material over the
flanges C, C¹, so as jointly to enclose them; the said tube being split at the top
and curved so as to fit, or accommodate, the inner diameter of the rim H.
The slot or groove of the tube E is somewhat wider than the two pieces I and J
taken together, but narrower than the flanges C and C.
The metal tube E may be made in one piece, in which case its diameter should
be the same as that of the interior of the rim H and should be curved accordingly.
There may be a break or interstice at some convenient part thereof enabling it
to be readily removed from the rim when required.
The tube E may be divided into as many lengths as may be desired, provided
that the arrangement when completed corresponds to the inner diameter of the
rim.
In order to enable the tube E, or portions of such tube, to slide along the
flanges C C¹, these flanges are divided into sections at one or more points, so as
to afford a passage for the said tube.
The tyre containing an air chamber D and being thus closed by the tube or
length of tube E is placed upon the rim of the wheel.
This operation does not require any special effort, seeing that the tyre may be
extended in length; and the metal tube which keeps it closed should have a
break or joint at one point at least.
After placing the tyre upon the rim of the wheel, the air chamber is inflated
in the ordinary manner.
Under the pressure of the air, the tyre increases in diameter while contracting
along its circumference, thereby causing the metal tube or the lengths of tube,
to be firmly pressed against the bottom surface of the rim, and to exercise a power-
ful compressing action upon the latter.
It is not absolutely necessary to employ a metal tube such as E for keeping the two
flanges C and C joined together.
For inasmuch as the metal tube only acts at the parts I and J of the case, there
may be employed, as a substitute for such tube, any suitable piece or device made
either of metal or of any material fit to be used for the purpose, which will enable
the parts I and J of the casing to be tightly compressed.
Thus there may be employed one or more pieces such as E¹, Figure 5, formed
of two rods adapted to compress the parts I and J of the casing of the tyre; such
two rods being fitted with a number of transverse fasteners capable of accommo-
dating the shape or outline of the flanges C C₁ in the same manner as does the
tube E above referred to.
Or the air chamber within the case may be dispensed with, in which case it is
only necessary to line the interior of such case with indiarubber so as to render
it damp-proof; the two flanges C and C¹ being wedged together, as it were,
sufficiently tightly to allow of no escape of air between them.
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 pneumatic tyre arrangement for the wheels of velocipedes or other vehicles,
consisting of a case constructed to form a tube enclosing or forming an air
chamber, the edges of the said case being provided with flanges joined together by
a metal or other tube split at the top, such tube containing the two flanges which

page_text: form the edges of the case, substantially as described and illustrated in the
drawing.
2. In the tyre arrangement forming the subject of the first claim the employ-
ment, for the purpose of connecting the flanges terminating the edges of the
pneumatic casing, of either a single metal tube, curved to correspond to the inner
diameter of the rim, divided at any point or part and of the same length as the
interior of the said rim, or a number of tubes also bent so as to correspond to the
inner diameter of the rim slipped end-to-end upon the flanges of the casing, so as
to form a hoop corresponding to the inner diameter of the rim, substantially as
described and illustrated in the drawing.
3. In the tyre arrangement referred to in the first claim, substituting for
the tube connecting the two edges of the pneumatic case any ofher piece or device
consisting of one or more parts and adapted to obtain the same result, and notably
the employment of two rods compressing the edges of the case, such rod being
connected at several points by fasteners surrounding the flanges of such case, sub-
stantially as described and illustrated in the drawing.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.