Improvements in Pneumatic Tyres for Cycles and the like.
Year: 1892

page_text: Date of Application, 3rd June, 1892
Complete Specification Left, 27th Oct., 1892-Accepted, 11th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Tyres for Cycles and the like.
I HONORÉ PIERRE ARTHUR VILLEVE Manufacturer, of Orleans in the
Republic of France, do hereby declare the nature of this invention to be as follows:―
This invention for improvements in pneumatic tyres for cycles and the like has
for its object to provide a very elastic tyre that can be readily and firmly secured
in place and to prevent the escape of air from the tyre whilst being and when
inflated.
The outer circumference of the metal rim is channel shaped in cross section with
a flat bottom and with inwardly projecting flanges from the top edges of the sides
of the channel. A flexible rubber air tube is formed in one piece with a hardened
rubber block which rests on the bottom of the channel. The flexible rubber tread,
strengthened by canvas backing extending from edge to edge, is formed in one with
hardened rubber ribs at its edges corresponding to the sides of the channel. When
the air tube is inflated it holds the tread firmly in position. The elasticity of the
tyre is not decreased by any partitions or by the rim.
The spindle of the inflating valve passes through a chamber, its enlarged outer
end sliding in the reduced outer end of the chamber. A small air passage is formed
down the spindle and opens into the chamber through a small hole. This hole is
covered by a flexible rubber tube surrounding the spindle and extending to the
enlarged end of the spindle. The end of the spindle is provided with a screw cap.
When inflating the tyre, the rubber tube prevents the escape of air between the
valve spindle and the outer end of the chamber.
Dated this 3rd day of June 1892.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, Agents.
COMPLETE SPECIFICATION.
Improvements in Pneumatic Tyres for Cycles and the like.
I, HONORÉ PIERRE ARTHUR VILLEVE, Manufacturer, of Orleans, 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 for improvements in pneumatic tyres for cycles and the like has
for its object to provide a very elastic tyre that can be readily and firmly secured
in place and to prevent the escape of air from the tire whilst being, and when,
inflated.
The outer circumference of the metal rim is channel shape in cross section with a
flat bottom and with inwardly projecting flanges from the top edges of the sides of
the channel. The flexible rubber tread strengthened by canvas backing extending
from edge to edge, is formed in one with hardened rubber ribs at its edges corre-
sponding to the sides of the channel. A. flexible rubber air tube is formed in one
piece with a hardened rubber base which rests on the bottom of the channel, and
when the air tube is inflated holds the tread firmly in position. In a modification
the rubber base is replaced by a leather or other suitable ring held in position by a
steel band tightened on it by means of screws and the air tube is flat at its seat and
rests on the steel band. The elasticity of the tyre is not decreased by any partitions
or by the rim.
The spindle of the inflating valves passes through a chamber, its enlarged outer
D77

page_text: end sliding in the reduced outer end of the chamber. A small air passage is formed
down the spindle and opens into the chamber through a small hole. This hole is
covered by a flexible rubber tube surrounding the spindle and extending to the
enlarged end of the spindle. The end of the spindle is provided with a screw cap.
When inflating the tyre the rubber tube prevents the escape of air between the
valve spindle and the outer end of the chamber.
In the accompanying sheet of illustrative drawings:
Figures 1 and 2 show in cross section one form of pneumatic tyre constructed
according to this invention; and
Figures 3 and 4 shown in cross and longitudinal section respectively a modified
construction.
Figure 5 is a section through the inflating valve.
In Figures 1 and 2 the flexible rubber tread A strengthened by the canvas
backing T extending from edge to edge is formed in one piece with hardened rubber
ridges C C¹ at its edges which are received in channels in the side of the metal
rim D which is shown solid in Figure 1 and hollow in Figure 2. The air tube B¹
is formed with a hardened rubber base resting in the channel shaped rim D between
the ribs C C. When the air tube is inflated the base B₁ is forced against the
rim D and firmly holds the tread A. in position.
In the modification shown in Figure 3 the tread A with its ribs C C¹ is held in
the rim D by means of the ring E situated in the channel shaped rim D between
the ribs C C and retained in position by means of the steel band F to which it is
rivetted which can be tightened by means of screws G attached to the band by the
loops o and passing through holes s in the ring E and rim D. The screws G pass
through brackets H secured to the rim D and are provided with wing nuts J by
which they are drawn through the brackets to tighten the ring E and band F.
The air tube B is formed with a flat base resting on the band F.
The valve chamber of the inflating valve consists of a chamber K which can be
fixed in the rim and to the pneumatic tyre by the nuts P, Q and R. In the valve
chamber is fixed by means of the pin M the spindle L which is partly tubular as
shown and whose enlarged outer end fits in the reduced end of the chamber K.
The tubular spindle communicates by means of the small hole e with the chamber K
and is surrounded by the rubber tube N which covers the hole e.
When inflating
the tyre the air passes down the spindle through the hole e past the rubber tube N
to the air tube. The tube N prevents the escape of air back through the hole e
whilst the tyre is being inflated. The air passage in the spindle is closed by
the cap o.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination of a channel shaped metal rim, of the rubber tread with ribs
at its edges fitting in the sides of the channel of the rim, aud of a base B¹ fitting in
the rim between the ribs and serving to hold the same firmly in position in the rim
and consequently the tread in position the whole substantially as described.
2. The construction and arrangement of a pneumatic tyre for cycles and the like
substantially as described with reference to the drawing.
3. The construction and arrangement of an inflating valve for pneumatic tyres
for cycles and the like.
Dated this 27th day of October 1892.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, Agents.