Year: 1898

page_text: I, GEORGE DICK WOOD, of 67, Hanover Street, in the City of Edinburgh, Butcher,
do hereby declare the nature of this invention to be as follows:-
This invention, which relates to wheel tyres, has for its object the provision
of improved means for securing the rubber tyre or tread to the wheel rim, the
improvements being specially applicable to wheels of carriages and like road
vehicles.
The wheel rim is or may be of the ordinary channel or clincher type, and the
rubber tyre or tread, instead of being secured by the dovetail flanges of the rim
which compress the base of the rubber and detract from the resiliency of the tyre,
or being wired on and being liable to slip or creep on the rim, is held within
the channel or between the flanges of the rim by means of spring wires or rods
which are threaded transversely through the rubber and bear against the side
flanges so as to prevent the withdrawal of the tyre after its insertion within the.
rim channel.
A single wire may be threaded through the rubber tread, but by preference
the spring wires or rods are made in short lengths which are fitted at intervals
around the tyre, and are bent to approximately U-form and passed through lateral
orifices in the rubber then bent at their ends to lie longitudinally or circum-
ferentially between the rubber tread and the flanges of the rim. The wires are
preferably inserted alternately from opposite sides of the rubber or they may be
moulded into the rubber, so that the free ends of the alternate lengths bear on
the opposite side flanges of the rim and prevent any tendency towards creeping.
of the tyre whilst also ensuring that the tyre may not be accidentally detached
from the rim.
In fitting the tyre within the channel of the wheel rim the projecting ends of
the wires or rods are pressed inwards by hand and their resiliency causes them to
spring outwards and engage with the side flanges or lie within them when the
flanges are undercut or dovetailed.

page_text: be performed, to be particularly described and ascertained in and by the follow-
ing statement:-
This invention, which relates to wheel tyres, has for its object the provision
of improved means for securing the rubber tyre or tread to the wheel rim, the
improvements being especially applicable to wheels of carriages and like road
vehicles.
The invention is illustrated by the accompanying drawings, Fig. 1 of which is
a vertical section longitudinally of the tyre showing the improved method of
fastening the rubber tread to the wheel rim. Fig. 2 is a part section circum-
ferentially of the tyre, on the line x-x, Fig. 3, and Fig. 3 a transverse vertical
section on the line y-y, Fig. 2, both figures being to a larger scale than Fig. 1.
Fig. 4 shows a modified form of the securing wire.
The wheel rim A is or may be of the ordinary channel or clincher type, and
the rubber tyre or tread, instead of being secured by the dovetail flanges of the
rim which compress the base of the rubber C and detract from the resiliency of
the tyre, or being wired on and being liable to slip or creep on the rim, is held
within the channel or between the flanges A¹ of the rim by means of spring
wires or rods B which are threaded transversely through the rubber and bear
against the side flanges A¹ so as to prevent the withdrawal of the tyre after its
insertion within the rim channel.
A single wire may be threaded through the rubber tread, but by preference
the spring wires or rods B are made in short lengths, as shown, which are fitted
at intervals around the tyre, and are bent to approximately U-form, as shown
at Figs. 2 and 4, and passed through lateral orifices C in the rubber C, then bent
at their ends to lie longitudinally or circumferentially between the rubber tread C
and the flanges A¹ of the rim. The wires B are preferably inserted alternately
from opposite sides of the rubber or they may be moulded into the rubber C, so
that the free ends of the alternate lengths bear on the opposite side flanges A¹
of the rim A and prevent any tendency towards creeping of the tyre whilst also
ensuring that the tyre may not be accidentally detached from the rim.
In fitting the tyre within the channel of the wheel rim the projecting ends of
the wires or rods are pressed inwards by hand and their resiliency causes them to
spring outwards and engage with the side flanges A¹ or lie within them when
the flanges are undercut, as shown, or dovetailed.
As an alternative the U-shaped spring wires may be cut centrally and the
portions, which are then of Z or S form, separated and placed beneath the flanges
of the rim in the manner described in order to retain the tyre upon the wheel
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:
The improved means for securing rubber tyres or treads to wheel rims con-
sisting of a series of short lengths of wire bent to approximately U shape, and
inserted in transverse orifices in the rubber tyre, the ends of said wires bearing
against the dove-tailed or undercut side flanges of the rim substantially as
described.