Year: 1896

page_text: Date of Application, 28th May, 1896
Complete Specification Left, 29th Mar., 1897-Accepted, 28th May, 1897
GEORGE ELLIOTT BRINKWORTH of 16 Clifford's Iun, Fleet Street in the
County of London Solicitor do hereby declare the nature of this invention to
be as follows:-
This my invention relates to an improvement in the manufacture of rubber
tvres for cycles and other wheels more especially for pneumatic tyres used on
bicycles. The invention consists in having two hard rubber continuous half
round or V shaped bands running paralell round the periphery and cast onto the
pneumatic tyre at the points where the tyre would touch the ground and has
two bearing points on which the tyre rests when inflated and presents an
effectual mode of preventing slipping of the wheels laterally when turning round
sharp curves or riding on an inclined plane (especially after a slight shower of
rain when the road or track is greasy) and where the cyclist and his wheels are
out of perpendicular, and will also make the cycle faster on the track as the
friction will be lessened by reducing the surface of contact with the ground.
In consequence of the duplex arrangement the half round or V shaped bands
will present an unpuncturable surface even if the angle of the wheels he so great
as to lift the paralell part of the half round or V shaped band off the ground at
one side, and is a great advance on the ordinary modes now in use for preventing
the slipping of tyres. It has the advantage of being adaptable to any shaped
tyre.
The half round or V shaped bands being solid the pneumatic part of the tyre
can be made of lighter rubber and thiner in substance and this would more than
compensate for any additional weight in the duplex gripper by reason of the
addition of the solid rubber bands.
Dand ooch M 1906
G. ELLIOTT BRINKWORTH.
I GEORGE ELLIOTT BRINKWORTH 16 Clifford's Inn Fleet Street London
Solicitor 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 invention consists in having two hard rubber continuous half round or
V shaped bands running parallel round the periphery and cast on affixed to or
placed on the pneumatic tyre at the point or points of contact with the ground.
It has two bearing points on which the tyre rests when inflated.
The said half round or V shaped bands can be either made separately or cast
in one piece with the tyre and can be made of hard or soft rubber either smooth
or corrugated.

page_text: The tyre so made or improved as above will effectually prevent side slip and
punctures and will make the tyre more durable and more resilient or springy."
In the drawings
Figures No. 1 & 2 are cross sections of the improved pneumatic tyre showing
my invention. The bands in these figures are shown cast onto the pneumatic
tyre.
Figure 3 shows the improved tyre when the wheel is at an angle of 70°.
On the rim Fig. 1 at A. A. the half round bands are shown as part of the
tyre B. Fig. 2 at C. C the V shaped bands are also forming part of the
tyre B.
Fig. 3 shows the pneumatic tyre bands as part of the tyre B resting on the rim
of the wheel at D and bringing one of the half round bands into position when
the wheel is at an angle.
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
The combination of two hard or soft rubber continuous half round or V shaped
bands running parallel round the periphery of the pneumatic tyres of wheels
especially bicycle tyres and either cast in one piece with the tyres or affixed
thereto by cement or other suitable material, the whole substantially as & for the
purpose set forth.
Dated this 29th day of March 1897.
G. ELLIOTT BRINKWORTH.
Fred. A. Darlington,
Agent for the Applicant.