An Improved Wheel.
Year: 1888

page_text: .
ate of Application, 9th Oct., 1888
Complete Specification Left, 24th July, 1839-Accepted, 24th Aug., 1889
PROVISIONAL SPECIFICATION.
An Improved Wheel.
Communicated by FRANZ SCHERFF, of Auckland, in the Colony of New Zealand,
Colliery Proprietor.
I WILLIAM ALFRED SPARROW of 2 Jeffreys Square St. Mary Axe in the City of
London Metal factor do hereby declare the nature of this invention to be as follows:-
Of late years an improvement has been made in the wheels especially of road
carriages in that rings of india rubber or other yielding material have been placed
round and held by the tyres thereof but a great evil also has been experienced in
this improvement in that these rings are so frequently cut or chafed through by stones
or otherwise necessitating frequent renewals. Now the object of this invention is the
production of a wheel that shall bave all or nearly all the advantages of these afore-
said wheels while at the same time it shall have none of the evils in that the ring shall
be perfectly protected and this wheel can be used on rails as well as on roads.
To carry out this object a tyre of metal is made for the wheel and in cross section
this tyre on its outer surface may be of any desired shape but its inner surface is
preferably semicircular or thereabouts. In this tyre is placed a ring of india rubber
or other suitable material which can very conveniently be tubular and is of a corre-
sponding cross section and over the inner surface of this ring is placed the felloe of
the wheel made in two or more separate parts the outer surface of which felloe in
cross section corresponds with the ring. The nave of the wheel may be made of any
usual or convenient shape and the spokes of the wheel between the nave and the felloe
are made in any convenient manner to press the folloe from the nave tightly on the ring
and thus render the whole wheel rigid. This can very conveniently be effected by screw
threads and the spokes can be screwed into both the nave and the felloe in which case the
two screw threads either can be right and left handed or only can have different pitches
or the spokes can be screwed into either the nave or the felloe having either heads
on their other ends or screw nuts which can press against the felloe or the nave.
Thus in this wheel while there is no danger of the ring of india rubber or other
material being cut or chafed through as it is protected by the tyre the advantages
caused by the ring or some of them are still retained and this wheel can obviously be
used for all purposes.
The felloe the spokes and the nave of this wheel may be made of any suitable
material but are preferably of metal.
Dated this 9th day of October 1888
COMPLETE
SPECIFICATION.
An Improved Wheel.
Communicated by FRANZ SCHERFF, of Auckland, in the Colony of New Zealand,
Colliery Proprietor.
I WILLIAM ALFRED SPARROW of 2 Jeffrey's Square St. Mary Axe in the city of
London Metal factor 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 :-
Of late years an improvement has been made in wheels especially of road carriages in
that rings of india rubber or other yielding compressible material have been placed
round and outside of and held by the tyres thereof but a great evil also has been
experienced in this improvement and in the use of the same in that these rings are so
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page_text: frequently cut or chafed through by stones or otherwise necessitating frequent
renewals.
Now the object of this invention is the production of a wheel that shall have all or
nearly all the advantages of these aforesaid wheels together with, the further advantage
of capability of use on rails as well as roads while at the same time this wheel shall
not have or experience the aforesaid evil in that the ring of india rubber or other
material shall be perfectly protected from the aforesaid damage and consequently will
not require frequent renewal.
In order the more clearly to explain this invention and in what manner the same is
to be performed I refer to the accompanying drawing wherein I have shewn one
and what is considered to be a very convenient and efficient form and style of a wheel
constructed according to this invention as and when made of metal of which wheel
Figure 1 is a side elevation Figure 2 is a transverse sectional view and Figure 3 is a
part transverse sectional view on an enlarged scale.
'
A tyre A of metal is made for the wheel of the proper diameter and dimensions
and in cross section the outer surface of this tyre A may be of any desired shape such
as flat or plane or convex or as is shewn in the drawing semicircular or otherwise and
this outer surface may be fitted with a flange for running on rails or may be other-
wise formed as may be expedient in each particular case but the inner surface of this
tyre A is in all cases recessed or concave and is preferably semicircular or there abouts
as is shewn in the drawing. In this tyre A is placed a ring B of india rubber or
other suitable yielding compressible material which can very, conveniently be tubular
as is shewn in the drawing and in cross section corresponds with the inner surface of
the tyre A and this ring B is of the same breadth transversely as the tyre A or
there abouts. On and over the inner surface of the ring B is placed the felloe Cof
the wheel which felloe C is divided transversely into two or more separate parts for the
purpose hereinafter explained and in cross section the outer surface of this felloe C
is in all cases recessed or concave and is preferably semicircular or thereabouts as is
shewn in the drawing and corresponds with the inner surface of the ring B but the inner
surface of this felloe C may be of any desired shape such as flat or plane or convex or
as is shewn in the drawing semicircular or otherwise and this felloe C is or may be
of the same or a greater breadth transversely as or than the ring B. The nave D of
the wheel may be made of any usual or desirable shape and the spokes E of the
wheel between the nave D and the felloe Care so made in any convenient manner
and are so fitted with any usual and suitable appliances and devices as to be capable
of pressing the felloe C out from the nave D tightly on and against the ring B and
therethrough on and against the tyre A which action is rendered possible by the
division as aforesaid of the felloe into two or more separate parts which parts when
so pressed out may if required be connected together by fish plates or otherwise and
when the felloe C is so pressed out by the spokes E the whole wheel is rendered rigid
as is desired.
I shew in the drawing one very convenient and efficient manner when the wheel is
made of metal of fitting the spokes E and the nave D and the felloe C for the afore-
said purpose wherein one end F of each spoke E screws into the nave D while the
other end thereof enters a socket K formed therefor on the felloe C the required
tension or pressure being given and adjusted by screw nuts H on this end of the
spoke E bearing against the end or mouth of the socket K.
I would however have it clearly understood as indeed is evident that the nave and
the spokes and the felloe of this wheel need not necessarily be made of metal as is
shewn in the drawing for either the nave or the spokes or the felloe or any two of
thein or all of them may be made of wood or any suitable material and in each and
every case all the several parts of this wheel may be formed of any desired and
suitable shapes save only that the outer surface of the felloe and the inner surface of
the tyre are as is hereinbefore described recessed or concave in cross section so that the
compressible ring may be securely held and retained between the same and all these
aforesaid several parts may be constructed and fitted in such an ordinary or other
manner and with such usual and suitable appliances and devices as may be necessary

page_text: or expedient to cause each part of this wheel to perform its desired function as
hereinbefore described having regard to the work for which each particular wheel is
designed and the material or materials of which the same is created.
Thus in this wheel constructed as is hereinbefore described while there is no danger
of the ring of india rubber or other compressible material being cut or chafed through
by stones on the road or otherwise as it is protected by the outside tyre the advantages
afforded by this ring or some of them are still retained as is desired.
Having now particularly described and ascertained the nature of this said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. The wheel consisting of a rigid tyre a compressible ring within the same and an
expansible felloe pressed against the ring by spokes from the nave substantially as
hereinbefore set forth.
2. The combination in a wheel with a tyre A and a ring B of a felloe C made in
two or more parts a nave D and adjustable spokes E between the nave and the felloe
substantially as hereinbefore described.
3. The combination in a wheel of a nave D and spokes E having screw threads F
and screw nuts H with a felloe having sockets K and pressing a ring B. against a
tyre A substantially as herein before described.
4. The improved wheel substantially as hereinbefore described and shewn in the
accompanying drawing.
Dated this 24th day of Jul 1980