Improvements in Pneumatic Tyres and Rims.
Year: 1896

page_text: Date of Application, 18th Dec., 1896
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Tyres and Rims.
HENRY STANBRIDGE of 136 Wellesley Road Chiswick London W. Engineer do
hereby declare the nature of this invention to be as follows:-
My invention relates to those pneumatic tyres designated as "tubeless" and
consists in so arranging the form of tyre and rim that the said tyre can readily
be removed from the rim and repaired in case of puncture also that it effectively
seals itself on inflation. I form my rim with a curve rising in the centre towards
the tyre and said rim having a retaining flange on either side formed by bending
over the rim. The outward edges of the Indiarubber tyre are of corresponding
shape to fit the said retaining flanges of rim on either side and the inward edges
are comparatively thin to follow the curve of the rim, meeting or nearly so at
the centre. After one half of the indiarubber tyre has been placed in the flange
of the rim an independant continuous elastic band of indiarubber with thickened
edges, shaped like a wedge, round or tubular and rather thinner if necessary in
the centre, is inserted in the tyre, covering the-one edge of the tyre and being
stretched over the apex of curve in centre of rim.
The other edge of the tyre is now tricked in under the said elastic band and
into the flange of rim and the tyre can be inflated.
Dated this Eighteenth day of December 1896.
HENRY STANBRIDGE.
HENRY STANBRIDGE of 136 Wellesley Road, Chiswick, London W. 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:-
This Invention relates to those pneumatic tyres designated as "tubeless" i.e.
a tyre consisting of an endless flat band of india rubber composition, the edges
of which when drawn together form a split tube and my Invention has for object
arranging and designing a form of tyre and rim so that the said tyre can readily
be removed from the rim and replaced, also that it efficiently seals itself on
inflation.
In the accompanying drawing
Fig. 1. shews a section of one form of my improved tyre and rim inflated.

page_text: Like letters in both figures indicate similar parts and I now proceed to describe
the same.
A. is the metal rim of the wheel.
ais a curve or arch rising in the centre of rim.
a are the retaining flanges of the metal rim.
a³ are depressions formed in' the top part of rim.
a the side walls of rim.
B is the india rubber composite tyre.
are retaining edges formed on such india rubber composite tyre
68 shews a slight thickening of the tyre to fit the depressions a³ formed in the
top part of the metal rim.
63 are the edges of the india rubber composite tyre.
C is an endless or continuous elastic band of india rubber or other elastic
material.
clare the cylindrical beaded or thickened edges of said elastic band.
is a thin elastic web connecting the two beads or thick edges of the band.
After one half of the tyre has been inserted in the metal rim, the endless elastic
band is inserted in the tyre, covering the one edge of the tyre and being stretched
over the apex of the curve rising in the centre of the metal rim. The other edge
of the tyre is now worked round under the elastic band and into the flange or the
side of the metal rim.
The said endless or continuous elastic band is kept in its place by the arch or
curve a formed in the centre of the metal rim and the edges of the said elastic
band pinch or nip the edges of the tyre against the metal rim, forming an air
tight joint. The thin web forming the central part of the elastic band makes
another joint and upon inflation it is readily pressed down on the extreme edges
of the tyre. The arch or curve in the centre of the metal rim and the
depressions a³ are thus filled in solid and therefore when riding the tyre deflated
the fabric of the tyre is prevented from being cut by the extreme edges of the
metal rim.
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. The combination of a metal tyre or rim having an arch or curve rising in the
centre such as a¹ with an endless or continuous elastic band so shaped as to sit
and be retained in its place by the said arch or curve at the same time said band
pressing the edges of the tyre against the metal rim.
2. A metal tyre or rim having an arch or curve such as a¹ rising in the centre,
having for object preventing the fabric of the tyre being cut by the edges of the
rim when riding the tyre deflated..
Dated this 18th dove of Santamber 1897