An Improved Construction of Compound Resilient Action Tyre for Wheels of Road Vehicles.
Year: 1892

page_text: Date of Application, 28th Dec., 1892
Complete Specification Left, 28th Sept., 1893-Accepted, 28th Oct., 1893
PROVISIONAL SPECIFICATION.
An Improved Construction of Compound Resilient Action Tyre for
Wheels of Road Vehicles.
I, JOHN UTBER BURT, of 9 Spencer Street, Canonbury, County of London,
Carriage Builder, do hereby declare the nature of this invention to be as
follows:-
This invention has for object, the construction of compound resilient action
tyres for wheels of road vehicles in which the wheel is capable of running light,
almost noiseless, capable of being skidded and yet be resilient and yielding to the
weight of the load.
For the purpose of my invention, I felloe up a wheel in the usual way and apply
a tyre thereon, said tyre having an outwardly projecting and inwardly inclined
flange and a slightly hollowed outer surface. On this tyre, I place a moulded
rubber rim, said rim having a mid slit in its outer periphery, with or without side
grooves therefrom.
In the mid slit, I arrange the mid feather of an outer metal tyre, the exterior
of said tyre being of rounded or other shape, and preferably thinned down to
coincide with the rounded exposed surface of the rubber rim, the wings of the
outer tyre being of concave shape to sit upon the rubber.
When the several parts have been arranged on a wheel, I employ a ring of metal
of a shape corresponding with the flange of the first named tyre, so that when this
ring is bolted in place, the whole of the parts are fixed in position.
1000
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said John Utber Burt.
COMPLETE SPECIFICATION.
An Improved Construction of Compound Resilient Action Tyre for
Wheels of Road Vehicles.
I, JOHN UTBER BURT, of 9 Spencer Street, Canonbury, County of London,
Carriage Builder, 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 has for object the construction of compound resilient action tyres
for wheels of road vehicles in which the wheel is capable of running light, almost
noiseless capable of being skidded and yet be resilient and yielding to the weight
of the load.
and apply
For the purpose of my invention, I felloe up a wheel in the usual way,
a tyre thereon, said tyre having an outwardly projecting flange and a slightly and
inwardly inclined hollowed outer surface; on this tyre I place a moulded rubber
rim, said rim having a mid slit in its outer periphery terminating in a hollow with
side grooves therefrom.
In the mid slit, I arrange the mid feather of an outer metal tyre, the exterior of
said tyre being of rounded, or other shape, and preferably thinned down to coincide

page_text: with the rounded exposed surface of the rubber rim, the wings of the outer tyre
being of concave shape to sit upon the rubber.
When the several parts have been arranged on a wheel, I employ a ring of
metal with the flange overlapping the rubber and the felloe, so that when this
ring is bolted in place the whole of the parts are fixed in position.
My invention is clearly shown in the annexed drawings.
Figure 1 a part perspective and sectional elevation of my combination looking
from the outside portion or front of a wheel.
Figure 2 a similar view looking from the inner side of the wheel.
Figure 3 is a front elevation on a small scale of a complete wheel; and
Figure 4 a back elevation of same.
A is the felloe built up in the usual way. B a metal rim or inner tyre with a
concave outer face, and with a projecting yet set in flange C on one edge only.
D is a moulded rubber rim or cushion with convex base to fit the concave of the
inner tyre B. This rubber rim has tapered sides, against a part of which on one
side the projecting flange C of inner rim B fits closely. The moulded rubber
rim D has a convex outer periphery and an annular slot mid-distance, which slot
terminates in a hollow E constituting an air space; the side walls of the slot are
slightly tapered, and a midfeather F of an outer metal tyre G fits in it and forms
a pneumatic tube.
The outer tyre G has a convex exterior to narrow the tread on the road, and a
concave interior to fit close to the convex exterior of the moulded rubber rim D,
the closeness of fit confining the air in the hollow of the rubber to obtain resiliency
and a cushioning action between the inner metal tyre B and the outer metal tyre Ġ
from a combination of air and the elasticity and flexibility of the rubber between
them.
The inner tyre B is shrunk on and rivetted to the wheel felloe A in the usual
way of tyreing up a wheel, and after the outer metal tyre G has been attached to
the rubber rim D by the insertion of the midfeather F into the slot, they are
forced on to the inner metal tyre B, the rubber yielding to the pressure until its
edge abuts against the flange C. An outer side flat faced ring H is now placed
against the felloe A, also against the edge of the inner metal tyre B and the side
of the moulded rubber rim D; by screws I it is fastened to the inner metal tyre B,
and by screw bolts J, or their equivalents, it is fastened to the felloe A as
represented. This ring H is of such thickness and depth that it binds the rubber
rim G in place, and from the narrowed width of the sides of the rubber to that
of the base, together with the confined periphery due to the concavity of the outer
metal tyre, the rubber has a positive closing action upon the air cushion, and has
no tendency to spread outwardly, which preserves all the desired resiliency,
elasticity, and flexibility of what is known as the pneumatic tyre, and with a
reduction of chattering noise to the occupants of a vehicle usually experienced
from the running of metal tyred wheels.
I am aware that an inner metal tyre and a moulded rubber cushion rim have
been employed with ordinary wheels of road vehicles but in no instance so far as
I can discover has an outer metal tyre, an intermediate rubber rim, and a single
flanged inner tyre been employed in combination with an outer side ring which
fixes the rubber rim and through the particular attachment of the outer tyre
thereto secures the parts firmly to the felloe, as herein before described or as shown
in the annexed drawings.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The construction and employment of tyres and rims of wheels built up in the
manner described with reference to the accompanying drawings.
2. The combination of the several parts each constructed in the form and fitting

page_text: each other in the manner described and shown for constituting a resilient, yielding,
and almost noiseless tyreing of ordinary wheels of road vehicles, as set forth.
TL 00h daw of Cantambor 1902
H. GARDNER.
Patent Agent, 166, Fleet Street, London,
Agent for the said John Utber Burt.
H. GARDNER.
Patent Agent, 166, Fleet Street, London,
Agent for the said John Utber Burt.