An Improvement in the Construction of Rubber Tyres for the Wheels of Velocipedes or other Vehicles.
Year: 1888

page_text: Date of Application, 21st Dec., 1888
Complete Specification Left, 21st Sept., 1889-Accepted, 9th Nov.. 1889
PROVISIONAL SPECIFICATION.
An Improvement in the Construction of Rubber Tyres for the
Wheels of Velocipedes or other Vehicles.
WILLIAM EDWARD ROBERTS Cycle Manufactory St. James Square Bristol, do
hereby declare the nature of this invention to be as follows:-
By the insertion of a Canvas band or some non Stretching Material in the form of
a band or ring, or hands, or rings, within the body of rubber tyres whereby the
diameter of the Circular ring forming the rubber Tyre is kept constant, thus pre-
venting the elasticity of the Rubber taking place lengthwise.
Owing thus to the very small extent a Rubber Tyre made in this way can stretch
I claim the following advantages.
I. The Tyre will with great difficulty be taken off the wheel and in use will
practically never come off.
II. Stones or similar obstructions will not cut into or damage it to the great
extent they would an ordinary one.
III. The Vibration is materially lessened through there being more rubber con-
stantly in contact with the ground.
Dated thin 10th day of Dasambar 1000
WILLIAM EDWARD ROBERTS.
COMPLETE SPECIFICATION.
An Improvement in the Construction of Rubber Tyres for the
Wheels of Velocipedes or other Vehicles.
I WILLIAM EDWARD ROBERTS of St. James Square Bristol in the County of
Gloucester, Velocipede 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 :-
The object of this invention is to prevent rubber tyres employed upon wheels of
velocipedes or other vehicles from extending longitudinally.
For this purpose I make insertions during the process of manufacture of the
rubber tyre, of canvas or other non stretching material in the form of
band or ring
or bands or rings embedded within the body of the rubber forming the rubber tyre.
By this means the diameter of the circular ring forming the rubber tyre is kept
constant and can only be stretched by severe tension such as is applied for putting
the india rubber tyre into the felloe of the wheel.
The accompanying drawings show three methods by which my invention may be
applied to the manufacture of rubber tyres.
Figure 1 is a sectional view showing the application of the canvas insertion in
the form of a canvas tube. Figure 2 is a sectional view showing the application of
the canvas insertion in the form of a canvas band. Figure is a sectional view
showing the application of the canvas insertions in both forms, that of a canvas tube
partly surrounded by a canvas band. In all the figures the same reference letter
indicates the same part. In Figure 1; A is the solid rubber of the tyre, B the
canvas tube inserted therein, C the felloe and D a spoke. In Figure 2; A is the
solid rubber of the tyre, B the canvas band, C the felloe and D a spoke. In Figure 3;
A is the solid rubber of the tyre, B the canvas band partly surrounding the canvas
tube e,
Cthe felloe and D a spoke.
According to the arrangement shown in Figure 1 the solid rubber of which the
rubber tyre is formed is placed both inside and outside the canvas tube B; but

page_text: according to the arrangement shown in Figure 3 the small canvas tube e is left
hollow with the rubber surrounding it outside only.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. In the manufacture of india rubber tyres for the wheels of velocipedes or other
vehicles the insertion of bands of inelastic material, such as canvas to resist the
longitudinal extension of the tyre substantially as described.
2. In an india rubber tyre with inserted inelastic material, the insertion of such
inelastic material in tubular form for the purpose set forth and substantially as
described and illustrated by Figure 1 of the accompanying drawings.
3. In an india rubber tyre with inserted inelastic material, the insertion of such
inelastic material in band form for the purpose set forth and substantially as described
and illustrated by Figure 2 of the accompanying drawings.
4. In an india rabber tyre with inserted inelastic material, the insertion of such
inelastic material in tubular and band forms combined for the purpose set forth
and substantially as described and illustrated by Figure 3 of the accompanying
drawings.
Dated this 21st day of Sentember 1889
AYRTON & THOMAS,
Agents for the Applicant.