Improvements connected with Resilient Tyres for Wheels of Road Vehicles.
Year: 1898

page_text: Date of Application, 18th. Nov,, 1.898.
Complete Specification Left, 18th Aug., 1899-Accepted, 4th Nov., 1899"
PROVISIONAL SPECIFICATION.
Improvements connected with Resilient Tyres for Wheels of Road
Vehicles.
+
I, JOHN UTBER BURT, of 22, Premier Buildings, Upper Street, Islington,
County of London, Coachbuilder, do hereby declare the nature of this invention
to be as follows: →
This invention relates to certain detail improvements in or relating to resilient
tyres of the wheels of road vehicles, mostly based upon previous Letters Patent
granted to me on the 11th September 1895, No: 17008. In the specification,
the invention is described as consisting of a flanged felloe rim, a rubber liner with
annular slit, an inner ribbed outer flanged rim or tread or of the application of
an outside tyre on said flanged tread.
The above several features are retained, but for my present invention I purpose
employing the same flanged felloe rim, and instead of the channel being plain
annularly I rib longitudinally at intervals corresponding or not with ribs in
the outer rim, to the contour of which the rubber or resilient body has to conform
when the tyre is made up, this without extraneous appliances will prevent what
is termed "creeping."
The next detail improvement consists in making the outer rim of steel
(springy) with the intermediate feather or web which engages in the slit of the
rubber cushion to locate it. This outer rim is of such thickness and of spring
steel as to permit of its yielding while travelling to produce a better bearing
surface with circumferential expansion instead of transverse fracture. This outer
tyre or rim is flattish on its exterior and allows of an outside tyre with inner edge
flanges to be passed over and be shrunk on, and this fixes the outside tyre to the
outer tyre and enables the flanges of said outside tyre to embrace the side flanges
of the felloe rim which prevents undue side play of one tyre portion upon the
other and locates the three metal portions and the resilient body as a whole.
This liner or outer tyre can be dispensed with if the outside tyre be of suffi-
cient thickness and this may have the longitudinal ribs as before referred to, to
prevent creeping.
I purpose making my annular rib of wedge shape, so that when applied to a
wheel, the rubber is swaged outwardly at the sides to fill up any vacancy that
may be formed between the flanges of the felloc rim and of the outside tyre to
prevent a rattling or other noise.
The next detail improvement is in the rubber liner which instead of being
solid is formed with two hollows or of two separate tubes if of the first form the
exterior may be in the shape of a mid web into the spaces above and below, and
the ribs of the felloe rim and of the outer rim can find a lodgment but if two tubes
be applied, the ribs occupy the spaces between.
The hollow liner or the two tubes divide the strain of the load and any canting
of the wheel from any cause becomes relieved.
:
D.
10th
1000

page_text: COMPLETE SPECIFICATION.
Improvements connected with Resilient Tyres for Wheels of Road
Vehicles.
I, JOHN UTBER BURT, of 22, Premier Buildings, Upper Street, Islington,
County of London, Coach 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 relates to certain detail improvements in resilient tyres of the
wheels of road vehicles, mostly based upon a previous Letters Patent granted to
me on the 11th September 1895, No. 17008. In the specification, the invention
is described as consisting of a flanged felloe rim, a rubber liner with annular slit,
an inner ribbed outer flanged rim or tread, or of the application of an outside
tyre on said flanged tread.
The above several features are retained, but for my present invention I purpose
employing the same flanged felloe rim and instead of the channel being plain
annularly I rib longitudinally at intervals, corresponding or not with ribs in the
outer rim, to the contour of which the rubber or resilient body has to conform
when the tyre is made up, this without extraneous appliances will prevent what
is termed "creeping."
"
:
The next detail improvement consists in making the rim of steel (springy) with
the intermediate feathers or webs which engage in slits of the rubber cushion to
locate it. This tread or outer rim is of such thickness and of spring steel to per-
mit of its yielding while travelling to produce a better bearing surface with
circumferential expansion instead of transverse fracture. This rim is flattish on
its exterior and allows of an outside tyre with inner edge flanges to be passed over
and be shrunk or crowded on, and this fixes the outside tyre to the rim and enables
the flanges of said outside tyre to embrace the side flanges of the felloe rim which
prevents undue side play of one tyre portion upon the other and locates the three
metal portions, where three are fitted, and the resilient body as a whole. This
liner or outer tyre can be dispensed with if the outside tyre be of sufficient thick-
ness, and this may have the longitudinal ribs or feathers, as before referred to, to
prevent creeping."
I purpose making my annular rib of wedge shape so that when applied to a
wheel, the rubber is swaged outwardly at the sides to fill up any vacancy that
may be formed between the flanges of the felloe rim and of the outside tyre to
prevent rattling or other noise.
The next detail improvement is in the rubber liner which is formed with two
hollows, having a mid web the hollows being at top and bottom in which the ribs
of the felloe rim and of the outer rim can find a lodgment, but two tubes may be
applied the ribs occupying the spaces between. The hollow liner or the two tubes
divide the strain of the load and any canting of the wheel from any cause becomes
relieved.
My invention is represented on the annexed sheet of drawings.
Figure 1 part longitudinal section of outer tyre or tread.
Figure 2 perspective elevation of portion of the rubber liner.
Figure 3 part sectional perspective elevation of the rim.
Figure 4 perspective sectional elevation of tyre complete as applied to a felloed
wheel, the tread having a movement within the side walls of the rim.
Figure 5 section of rim and tread with alternate feathers, the spaces for the
rubber liner being shown open.
Figure 6 section of tyre on a wood felloe and having the tread movable on the
outside of the side walls of the rim, and having a springy steel intermediate band
or open ended strip to prevent undue abrasion of the rubber from the action of
the tread.

page_text: Figure 7 section of tyre in which the rubber liner has two holes circum-
ferentially in it as a cushioned liner, this however may have a single hole and
be inflated if the rubber liner be made thinner than that shown.
Figure 8 section of tyre in which the liner consists of two separate tubes in
side recesses of the rim and of the tread respectively, the intervening ribs of the
rim and tread which may be continuous or at intervals only as desired.
A, tread. B, feather or feathers in the inner face. C, inclined inner surface to
sit upon rubber liner E shaped to suit. F, F. slots in rubber liner for
feathers G. G, of rim H to pass into the feathers B of the tread occupying other
spaces in the rubber between the ends of the rim feathers G, G, loosely to allow
for play between them while the wheel, to which my invention is fitted, is
running.
I. I. side walls of rim H within which the deep sides J, J, of the tread A are
guided in their up and down, or in and out movement due to the travelling of the
wheel.
The ends of the feathers B, G. shown at Figure 5 are never in touch because the
elasticity of the rubber liner E. E, due to the squeezed compression of the tyre A
when crowded in and against the rubber liner E causes a certain amount of the
rubber to enter between the ends of the feathers and prevent "creeping" action
and rattling noise. K, felloe of a wooden wheel and having wood spokes L for
which the invention is specially intended.
According to Figure 6. I employ a band or strip of, say, steel M between the
tread A and the rubber liner E to prevent any abrasion of the tread upon the
rubber liner, so that it becomes absorbed mostly upon the steel strin or band.
The steel strip has slots at intervals for the feathers B to pass through and into
the slots or recesses of the rubber liner.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is:-
1
1
1. In the construction of wheels for road vehicles and heating resilient tyres,
the employment of feathers B in the inner face of the treads A, and feathers G
in the inner face of the rim H. said feathers intersecting each other circum-
ferentially when in place, as and for the purpose specified.
2. In the construction of wheels for road vehicles and having resilient tyres,
the employment of rubber liners E with slots F for the reception of feathers B
or feathers G, singly or in alternate combination, when such feathers intersect in
the manner and for the purposes described.
3. In the construction of wheels for road vehicles and having resilient tyres,
the employment of upper and lower grooved or recessed rubber liner E for the
reception of feathers B, G, projecting from the inner faces of the rim H and the
tread A respectively, as described.
4. In the construction of wheels for road vehicles and having resilient tyres
and with which the rim H and the tread A respectively have feathers C, B, the
employment of tubes (inflatable or other) between such feathers B, G, and the side
walls of the tread A and of the rim H, as and for the purposes specified.
1001
H. GARDNER,
Patent Agent, 166, Fleet Street, London.
Agent for the said John Utber Burt.