Improvements in Tyres for the Wheels of Bicycles and other Vehicles.
Year: 1896

page_text: Date of Application, 14th May, 1896
Date of Application, 14th May, 1896
Complete Specification Lert, 9th Nov., 1890-Accepted, 9th Jan., 1897
PROVISIONAL SPECIFICATION.
Improvements in Tyres for the Wheels of Bicycles and other
Vehicles.
I, ANDREW HUGH BOGLE of 4 Park Place, St. James' in the County of
London, Major General, late Royal Artillery, do hereby declare the nature of this
invention to be as follows:-
My invention has reference to wheel tyres and more particularly to the tyres
of the wheels of bicycles and other like vehicles, and its chief object is to provide
an efficient substitute for pneumatic tyres which are liable to get injured owing to
punctures by stones, nails &c.
According to my invention I employ around the rim or tyre to which the spokes
are connected another rim or tyre composed of felloe-like segments of say six or
eight inches more or less in length. These segments, which may be of metal,
rubber or other suitable material, are not connected together and they are there-
fore free to move independently of each other. Their ends may be bevelled or
otherwise shaped. The diameter of the segmental rim or tyre is somewhat larger,
say for example 2 to 3 inches larger, than that of the ordinary or inner rim or
tyre, and between the segmental tyre and the inner tyre I fit springs, preferably
two for each segment of the outer tyre, that is to say one near each end of the
segment. These springs are fitted upon bolts or pins the heads of which should be
countersunk into the segments, and their stems pass through holes in the inner tyre
and are provided at their inner ends with nuts. Any tendency that the springs
may have to move sideways can be prevented by means of caps surrounding their
outer parts, these caps being fixed to the inside of the segments of the outer tyre.
It will be readily understood that as the wheel revolves each segment of the
outer tyre will as it comes in contact with the ground yield to the weight or
pressure brought upon it, and all concussion, shock or sudden undue pressure will
be taken up by the springs between the segment and the inner tyre.
Dated this 14th day of May 1896.
J. C. MEWBURN & ELLIS,
55 and 56 Chancery Lane, London, Chartered Patent Agents.
Improvements in Tyres for the Wheels of Bicycles and other
Vehicles.
1, ANDREW HUGH BOGLE of 4 Park Place, St. James' in the County of
London, Major General, late Royal Artillery, do hereby declare the nature of this
invention and in what manner the saine is to be performed, to be particularly
described and ascertained in and by the following statement :-
My invention has reference to wheel tyres and more particularly to the tyres of

page_text: the wheels of bicycles and other like vehicles, and its object is to provide an
efficient substitute for pneumatic tyres which are liable to get injured owing to
punctures by stones, nails &c.
According to my invention I employ around the rim or tyre to which the spokes
are connected another rim or tyre composed of felloe-like segments of say six or
eight inches more or less in length. These segments which may be of metal,
rubber or other suitable material, are not connected together and they are there-
fore free to move independently of each other. Their ends may be bevelled or
otherwise shaped. The diameter of the segmental rim or tyre is somewhat larger
say for example 2 to 3 inches larger, than that of the ordinary or inner rim or tyre,
and between the segmental tyre and the inner tyre I fit springs, preferably two
for each segment of the outer tyre, that is to say one near each end of the segment.
These springs are fitted upon bolts or pins the heads of which should be counter-
sunk into the segments and their stems pass through the springs and then through
holes in the inner tyre and are provided at their inner ends with nuts. Any
tendency that the springs may have to move sideways is prevented by bosses cast
with the segments so as to form internal supports to the springs.
It will be readily understood that as the wheel revolves each segment of the
outer tyre will as it comes in contact with the ground yield to the weight or
pressure brought upon it, and all concussion, shock or undue pressure will be taken
up by the springs between the segment and the inner tyre.
In the accompanying drawings
Figure 1 is a side elevation, and Figure 2 a plan of a wheel tyre constructed in
accordance with my invention.
Figure 3 is a part vertical section on a larger scale.
Figure 4 is a cross section on the line A-B of Figure 3.
In these figures:-1 is the rigid or comparatively rigid wheel rim which is
connected by spokes 2 to the hub of the wheel in the usual manner. The tyre is
composed of a number of circular segments 4 of shallow are shape in cross section
arranged in a circle at some distance outside of and in the same plane as the rim 1.
Between each tyre segment 4 and the rim 1 there are arranged two cylindrically
coiled springs 5. A bolt 6 passes centrally through each coiled spring 5 and is
held at its outer end into the corresponding tyre segment 4. The segments 4 have
cast with them or have fixed to them radial bosses or projections 3 to form internal
supports to the springs 5 and prevent any tendency these springs might have to
move sideways. The bosses 3 have radial passages through them for the
bolts 6.
The bolts 6 are screw-threaded at their inner ends which project freely through
correspondingly larger holes 7 in the rim 1 and are secured on the inner side of
the said rim by means of screw nuts and lock nuts or by means of split pins 8.
Washers 9 are preferably employed to afford a good bearing surface to the nuts 8
upon the generally curved inner surface of the rim. The springs 5 bear at one end
free upon the inside of the tyre segments and at their other end on the rim 1 of
wheel 1.
Looseness and rattling of the springs and other parts are prevented by initial
compression of the springs by means of the nuts 8.
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. In wheels for bicycles and other vehicles the combination with a rigid or
relatively rigid wheel rim of a wheel tyre composed of a number of circular
segments of flat channel or arc shape in cross section, one or more coiled springs
arranged radially between the wheel rim and each tyre segment aud a bolt or rod
passing centrally through each coiled spring, rivetted into or connected with the
corresponding tyre segment and secured by means of nuts to the inner rim,
substantially as described and shown.

page_text: 2. The improved wheel tyre constructed substantially as described and as
illustrated in the accompanying drawings.
Dated this 3rd day of November 1896.
J. C. MEWBURN & ELLIS,
55 and 56 Chancery Lane, London, Chartered Patent Agents.