Improvements in or relating to Tyres of Wheels of Road Vehicles.
Year: 1897

page_text: This Print is in accordance with the Original Specification as it stands after Amend-
ment (under Section 18 of the Patents, &c., Act. 1883) as allowed by the
decision of the Chief Examiner of the 5th day of August 1898.
Date of Application, 7th May, 1897
Complete Specification Left, 5th Feb., 1898-Accepted, 12th Mar., 1898
PROVISIONAL SPECIFICATION.
Improvements in or relating to Tyres of Wheels of Road Vehicles.
I, HENRY FORBES JULIAN, of The Ness, Shaldon, in the County of Devon, Con-
sulting Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in tyres of road vehicles, and may be
said to consist in employing a tyre built up of segmental pieces of leather, wood,
paper, gutta-percha, vulcanite or other like substance placed to form radial joints
around the circumference of the wheel, and between the said joints are placed pieces
of elastic or yielding material, such as india-rubber. The said elastic or yielding
material may be placed between every joint, or between such a number as may be
found desirable.
The tyre formed in the aforesaid manner is supported by a channel or trough-
shaped hoop or rim, and I prefer to place between the rim and the tyre an elastic
material, such as rubber, or a tube inflated with a suitable fluid, or a metal spring
or springs.
.
The tyre may be secured to the rim by any suitable means, but I prefer to employ
for this purpose rings of inextensible material, such as metal wire, fitted into grooves
formed on the sides of the tyre, and preferably bevelled or recessed towards the
rim, so as to have the outside edge of each groove of greater circumference than
the smallest circumference of the wire ring.
Improvements in or relating to Tyres of Wheels of Road Vehicles.
I, HENRY FORBES JULIAN, of The Ness, Shaldon, in the County of Devon, Con-
sulting 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 improvements in tyres of vehicles, such as ordinary
carriages, carts, vans, trollies, guns, velocipedes and the like.
Its objects are to effectively reduce vibration and noise without materially increas-
ing the draught, and to increase the durability of the vehicle, at a moderate cost.
It may be said to consist in employing a tyre built up of segmental pieces-of
leather, wood, paper, vulcanite or other substance such as may be substituted for
these materials, placed to form radial joints around the circumference of the wheel
Price 8d.

page_text: and between the said joints are placed pieces of elastic or yielding material. The
tyre formed in the aforesaid manner is supported by a channel or trough shaped
hoop or rim, and I prefer to place between the rim and the tyre an elastic material,
such as rubber, or a flexible tube inflated with air or other elastic fluid, or a metal
spring or springs, to form an elastic bed or seating.
The segments supported on the elastic bed forming the tyre may be secured to
the rim by any suitable means, but I prefer to employ for this purpose rings of
inextensible material, such as metal wire, fitted into grooves formed on the sides
of the tyre and preferably bevelled or recessed towards the rim so as to have the
outside edge of the groove of greater circumference than the smallest circumference
of the wire ring.
In order that the invention may be better understood I annex drawings to this
specification of which Fig. 1 represents a cross-section of the tyre and rim. Fig. 2
a part of the circumferential-section, and Fig. 3 a cross-section showing the same
invention slightly modified.
In the drawings A represents the segments of leather and other suitable material,
B the joints of elastic or yielding material, C the rim, D the bed or seating of
elastic material, and G the wire rings.
The segments A are shaped in any suitable manner, as shown in Fig. 1, having
grooves or recesses on their sides preferably bevelled so that the outside edge
forms a greater circumference than the smallest circumference of the wire ring G.
Each segment or such a number of segments as is found desirable, is separated
from the other by a thin joint of rubber, felt or other elastic or yielding material,
and are preferably cemented together with rubber solution or other suitable cement.
The method of proceedure in forming the tyre is as follows:-The rim of the
wheel having been formed of a suitable shape, such as shown in the drawings, has
placed within the channel and around the outer circumference a band D of rubber,
an inflated tube or metal springs, or other suitable material, to form an elastic bed.
The segments A are next placed radially around the circumference of the elastic
bed with alternate joints B of rubber, or other suitable yielding material, and when
a complete circle is formed are subjected to pressure around the outer circumference,
whereby the circumferences of the edges F are reduced so as to admit of the rings G
being sprung into their places.
The rings G may be endless or may have their ends secured to form inextensible
rings.
When the elastic bed D consists of an inflated tube the rings are first put into
their places and the tube is then inflated.
One edge or flange of the channel shaped rim may be curved inwards as shown
at H, Fig. 3, or bent to form a dovetail, and a wire ring need then be applied
only to one side of the tyre.
The action of the tyre is such that each segment as it receives the weight of the
vehicle, or meets with an obstacle E on the road, slightly sinks into the elastic bed
without breaking the rubber joints between the segments and is free to return to
its original position as the wheel turns and the weight is removed. Shocks and
noise are thereby absorbed, and the effect of vibration is rendered less distructive
to the vehicle than when the tyre is of more rigid construction.
The tyre may be readily repaired by slipping off the wire rings and removing
and renewing the whole or any portion of the segmental pieces.
The segmental pieces are shown to fit between the flanges of the rim in one
piece, but it is obvious that these pieces may be divided circumferentially into
one or more pieces and rubber inserted between the joints.
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 improvement in tyres of road vehicles consisting in segmental pieces
formed to fit the rim and secured by wire rings fitting into grooves or recesses.

page_text: 2. The improved tyre for road vehicles consisting of segmental pieces firmly
secured against an elastic bed on the outer face of the rim by inextensible rings
supported in grooves in the sides of the said segmental pieces and having elastic
pieces between the joints of the said segmental pieces.