Improvement in Pneumatic Tyres for Vehicles.
Year: 1899

page_text: Improvement in Pneumatic Tyres for Vehicles.
ADOLPHUS ISIDORÉ RATH, 36, Grove Land, Camberwell, S.E., India Rubber
Manufacturer, do hereby declare the nature of this invention to be as follows;-
-
I provide the edges of an ordinary pneumatic tyre cover with a series of or-
dinary cords or strings interlocking with each other, and a number of studs,
hooks, or other means to fasten or attach one edge to the other, or may use on
one edge flat steel bands in sections and cords on the other edge and similarly
attach one edge to the other.
improvement in neumatic
1 ADOLPHUS ISIDORÉ RATH, of 36, Grove Lane, Camberwell, in the County of
Surrey, India Rubber Manufacturer, 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:—
My invention has for its object improvements in pneumatic tyres for the wheels
of vehicles and is designed to produce a tyre which when in use shall be firmly
affixed to the rim of the wheel and yet one that shall be capable of being quickly
and easily detached therefrom when desired.
In order that my invention may be clearly understood I will describe the same
more fully reference to be had to the accompanying drawings in which
Figure 1 is a diagramatic view of a portion of a pneumatic tyre constructedl
in accordance with my invention the same being shewn as detached from the
wheel rim.
Figure 2 is a vertical section of the same when in position on a wheel rim.
Figure 3 is a modification of my invention.
Referring more particularly to Figures 1 and 2 A is the outer cover of a pneu-
matic tyre constructed in accordance with my invention one edge of which I
provide with a cord or strip B of suitable material such as hemp cane fibre cork
This cord or
canvas or the like and of approximately circular cross section.
strip B runs longitudinally around the edge of the tyre cover.
The opposite
edge of the cover I similarly provide with two or more cords or strips C, C
parallel to each other longitudinally around the edge.
Suitably arranged above the cord or strip B is a longitudinal band or strip D
of metal vulcanite vulcanized fibre or the like either in one continuous length

page_text: the whole circumference of the cover or in sections as desired. This band or
strip serves to stiffen the whole structure when the tyre is to be affixed to
the wheel rim.
The action of my inproved tyre is as follows, the inner tube or air chamber E
having been placed loosely within the cover, the whole tyre is then arranged
around the wheel rim F, the edge a being next the rim and the edge super-
imposed thereon the air tube or chamber is now inflated thus forcing the two
edges of the cover together and interlocking them into the concavity of the rim
as shewn in Figure 2.
In Figure 3 the interlocking longitudinal strips B C C are shewn of other
than circular cross section and this construction will allow of the strips BC C
being of any suitable form in cross section so that the tyre may be adapted to
rims of other configuration than that which I have shewn.
In order to detach the tyre from the rim it is only necessary to deflate the air
tube when the two interlocking edges of the cover may be instantly disengaged
and the inner tube rendered easily accessible or the whole tyre removed from
the rim.
Although I have not shewn such construction I may provide suitable studs
or hooks on one or both edges of the cover for the purpose of more securely
effecting the interlocking of the parts.
I may find it desirable also to construct the bands or strips D in two or more
portions longitudinally that is to say instead of placing one broad band as shewn
I may arrange two or more narrower strips parallel to each other thus allowing
the whole of the bottom portions of the tyre occupying the rim to adapt itself
more readily to the shape thereof and at the same time form a more convenient
bed for the air tube to rest upon.
I am aware that tyres have been hitherto constructed with thickened edges
and without the inextensible wires as used in the ordinary type of pneumatic
tyres and I do not desire to broadly claim such thickened edges but
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 do claim is :-
1 A pneumatic tyre for wheels of vehicles one edge thereof having a protu-
berence or thickened portion longitudinally around the same adapted to engage
and interlock with suitable protuberences or thickened portions on the opposite
edge of the tyre said thickened portions being adapted to fill up the concavity
of the wheel rim substantially as described.
2 A pneumatic tyre for the wheels of vehicles having thickened edges adapted
to engage or interlock one with the other a strip or series of strips of stiffening
material adapted to hold the two edges more firmly together when the tyre is
inflated substantially as herein described and illustrated in the accompanying
drawings.
3 A pneumatic tyre for wheels of vehicles arranged combined and operating
substantially as herein described and illustrated with reference to the accom-
panying drawings.
Dated this Twentieth day of October 1800.