Improvements in the Tyres and Rims of Wheels of Carriages and other Road Vehicles, and in the Method of Attaching the same
Year: 1895

page_text: Date of Application, 1st July, 1895-Accepted, 3rd Aug., 1895
COMPLETE SPECIFICATION.
Improvements in the Tyres and Rims of Wheels of Carriages
and other Road Vehicles, and in the Method of Attaching
the same.
I, JAMES HAROLD BARRY of 4 Cadogan Terrace, Victoria Park, in the
County of Middlesex, 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 the tyres and rims of wheels of carriages and other
vehicles and a method of attaching the same.
Hitherto the use of pneumatic tyres for road vehicles has been attended with
considerable risk owing to the liability of the tyre to become punctured, and to
collapse, the weight of the vehicle being consequently thrown suddenly on the
metal rim of the wheel.
My invention has for object to provide a pneumatic tyre for vehicles which shall
be free from this objection.
Referring to the accompanying drawings for a fuller explanation―
Figure 1, is a cross section of my improved rim and tyres the pneumatic tyre
being inflated.
Figure 2, is a similar view, the pneumatic tyre being shewn in a state of
collapse.
Figure 3, is a modification of the arrangement shewn on Figure 1, the tyre being
shewn enclosed by a cover.
In carrying out my invention I form the metal rim A of approximately a
rectangular section, enclosing within three sides of its section and a part of its
outer periphery, a pneumatic tyre C of any ordinary construction as shewn on the
drawings.
The centre portion of the remaining fourth side, or outer periphery of the rim A
is cut out, leaving reentrant flanges a. a. Between these flanges a. a and upon the
pneumatic tyre C, is arranged to ride the inner flange of a double flanged solid
rubber tyre B, which is prevented by means of the reentrant flanges a. a. of the
rim A, and its own flanges b. from passing wholly within or out of the metal
rim A.
If desired I may insert a strip of canvas or of thin sheet metal D between the
solid tyre B and the pneumatic tyre C as shewn on Figures 1 and 2.
may also
for additional protection and for the exclusion of dust, furnish the solid tyre B
with an external covering of canvas or other suitable material E, such covering
being in that case suitably secured to the metal rim A by any ordinary method or
as shown in Figure 3 by means of loops and studs.
The metal rim A may have corrugations or a thickened hand or bands F formed
upon or attached to one or both sides thereof where the wear of the kerb is likely
to affect the said rim.
In operation, the pneumatic tyre C is made of a strength sufficient to keep the
inner surface of the outer flange 6 of the solid rubber tyre B distended normally
out of contact with the outer face of the reentrant flanges a a of the rim A, even
when the weight of the carriage or other vehicle is upon it.
Should the pneumatic tyre collapse through puncture or otherwise, (as shewn
on Figure 2) the outer flange b of the solid tyre B will contract and embrace the

page_text: rin on its reentrant flanges aa thereby acting for the time being as an ordinary
solid tyre.
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 combination with a hollow metallic felloe or rim having reentrant flanges,
of a double-flanged rubber tyre substantially as described.
2. Tyres for carriages and other road vehicles constructed combined and arranged
substantially as described and illustrated upon the accompanying drawings.
Dated this First day of July 1895.
For the Applicant,
GEDGE & FEENY,
Agents.