Year: 1895

page_text: We LA SOCIÉTÉ DES PNEUMATIQUES FRANÇAIS (SOCIÉTÉ ANONYME) of
10bis Avenue de la Grande Armée Paris in the Republic of France do hereby
declare the nature of this invention to be as follows:-
This invention relates to improved means for attaching pneumatic tyres to
wheels. According to this invention an inextensible or practically inextensible
ring (for instance of metal wire) is employed it being of a diameter smaller than
the external diameter of the felloe of the wheel to which it is to be attached the
said ring being kept in position within a peripheral groove or recess in the felloe
by the tension caused by the inflation of the air chamber, and the means of
attachment being completed by the compression and wedging of the external
covering of the air chamber or pneumatic tube against the sides of the felloe the
groove or recess in which is of such a character as to ensure this wedging or
securing action and consequently the satisfactory attachment of the tyre to the
wheel. Since the securing ring is in a state of equilibrium within the felloe (due
to the equal strains in reverse directions) it causes no strain on the felloe and there
is consequently no tendency to yield or bend and consequently the feltoe may be
made exceedingly light and may if desired be made narrower than usual. The
outer covering of the air chamber or pneumatic tube is protected from danger of
tearing or premature damage. The aforesaid attaching ring may be fixed to or
enclosed in one of the sides of the outer covering of the air chamber or pneumatic
tube while the other side of the said covering is passed over or under the other
side after the air chamber has been inserted in the said covering. To leave a
passage for the inflating valve the ring may be disconnected and then soldered on
to itself at two parts so as to leave an open part between these two points and holes
may be formed in the thickness of the covering at this spot.
When the pneumatic tyre has been placed in position on the felloe by passing
the aforesaid ring in a slanting direction into the groove or recess in the felloe the
air chamber or pneumatic tube is inflated. The said ring then is subjected to an
equilibrium of strains while the covering is wedged tightly and immoveably against
the sides of the said groove or recess.
A very light pneumatic tyre especially adapted for use on a track is thus
obtained.
When the vehicles are to be used on roads it is preferred that the said ring shall
be carried by one of the sides of the tyre covering while a wire cord band or the
like is attached to the other side of the said covering the said wire cord band or
the like exceeding in cross section or thickness the distance between the base of
the felloe and the aforesaid ring when the pneumatic tube is inflated.
cord band or the like we will refer to as the band.
This wire

page_text: To fix the tyre in position the side of the tyre covering to which the band is
attached is inserted in the base of the felloe which is easily done if the band be
elastic. The external covering is then rolled over the air chamber and the afore-
said ring is introduced on a slant into the groove or recess in the felloe above the
band. By inflating the air chamber the band is prevented from passing under the
ring which is kept in tension and the pneumatic tyre is firmly fixed by reason of its
wedging against the sides of the felloe.
Instead of inserting the band in the groove or recess in the felloe it may be
external thereto and when the inflation takes place it will be firmly held against
the side and incapable of sliding within the felloe owing to the wedging of the
covering against the sides of the said felloe. In the last case the band may be
inelastic.
Dated this 9th day of February 1895.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents
improved means for Attaching Pneumatic Tyres to wheels.
We, LA SOCIÉTÉ DES PNEUMATIQUES FRANCAIS (SOCIÉTÉ ANONYME)
of 10 Avenue de la Grande Armeé, 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 improved means for attaching pneumatic tyres to
wheels. According to this invention an inextensible or practically inextensible
ring (for instance of metal wire) is employed it being of a diameter smaller than
the external diameter of the felloe of the wheel to which it is to be attached, the
said ring being kept in position within a peripheral groove or recess in the felloe
by the tension caused by the inflation of the air chamber and the means of
attachment being completed by the compression and wedging of the external
covering of the air chamber or pneumatic tube against the sides of the felloe
the groove or recess in which is of such a character as to ensure this wedging
or securing action and consequently the satisfactory attachment of the tyre to
the wheel.
Since the securing ring is in a state of equilibrium within the felloe (due to
the equal strains in reverse directions) it causes no strain on the felloe and there
is consequently no tendency to yield or bend and consequently the felloe may be
made exceedingly light and may if desired be made narrower than usual. The
outer covering of the air chamber or pueumatic tube is protected from danger of
tearing or premature damage.
We will describe our invention with reference to the accompanying drawings
which illustrate in cross section in Figs. 1, 2 and 3 three arrangements according
to this invention for attaching pneumatic tyres to wheels and Fig. 4 is a detail
shewing means for allowing the inflation valve to pass through the surrounding
ring.
Referring to Fig. 1 the attaching ring a is enclosed in one of the sides e of the
outer covering E of the air chamber or pneumatic tube C while the other side e¹
of the said covering is passed over the side e after the air chamber C has been
inserted in the said covering E. To leave a passage for the inflating valve the
ring a may be disconnected and then soldered on to itself at two parts as shewn
at a Fig. 4 so as to leave an open part between these two points and holes & may
be formed in the thickness of the covering at this spot.

page_text: When the pneumatic tyre has been placed in position on the felloe J by passing
the aforesaid ring a in a slauting direction into the groove or recess formed therein
the air chamber or pneumatic tube C is inflated. The said ring a is then subjected
to an equilibrium of strains while the covering E is wedged tightly and immoveably
against the sides ; of the said grooved or recessed felloe J. A very light
pneumatic tyre especially adapted for use on a track as shewn in Fig. 1 is thus
obtained.
When the vehicles are to be used on roads it is preferred that the said ring a
shall be carried by one of the sides of the tyre covering as for example as shewn
in Fig. 2 while a wire, cord, band or the like A is attached to the other side of the
said covering the said wire cord band or the like exceeding in cross section or
thickness the distance between the base of the felloe and the aforesaid ring a when
the pneumatic tyre is inflated. This wire cord band or the like A we will refer to
as the band.
To fix the tyre in position the side of the tyre covering to which the band A. is
attached is inserted in the base of the felloe which is easily done if the band be
elastic. The external covering is then rolled over the air chamber and the afore-
said ring a is introduced on a slant into the groove or recess in the felloe J above
the band bringing it into the position shown in Fig. 2. By inflating the air
chamber C the band is prevented from passing under the ring a which is kept in
tension and the pneumatic tyre is firmly fixed by reason of its wedging against the
sides of the felloe.
Instead of inserting the band A. in the groove or recess in the felloe J it may be
external thereto as shewn in Fig. 3 and when the inflation takes place it will be
firmly held against the side j and incapable of sliding within the felloe owing to
the wedging of the covering E against the sides of the said felloe J. In the last
case the band A. may be inelastic.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is:-
1. Attaching pneumatic tyres to wheels by means of an inextensible or practically
inextensible ring of smaller diameter than the external diameter of the felloe in
combination with a recessed or grooved felloe the attachment being obtained by
tension caused by the inflation of the air chamber and the consequent compression
and wedging of the external covering thereof against the sides of the felloe
substantially as described.
2. The improved means for attaching pneumatic tyres to the felloes of wheels in
which the two sides of the external covering of the air chamber are held by the
same inextensible ring substantially as described.
3. The improved means for attaching pneumatic tyres to the felloes of wheels in
which one of the sides of the external covering of the air chamber is provided with
an inextensible ring and the other side with a wire cord or band or the like the
inextensible ring being introduced into the felloe above the wire cord band or the
like which is kept in position by the inextensible ring and by the wedging of
the external covering against the sides of the felloe substantially as described.
4. The arrangements for attaching pneumatic tyres to the felloes of wheels
substantially as herein before described and illustrated in Fig. 1, in Fig. 2 and
in Fig. 3 of the accompanying drawings.
Dated this 8th day of November 1895.
JOHNSONS & WILLCOX,
Agents.