Improvements in Wheels for Cycles and other Vehicles.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Wheels for Cycles and other Vehicles.
I, LOUIS LEON IZART, Engineer, of Asnieres, in the Republic of France, do
hereby declare the nature of this invention to be as follows:-
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In a wheel constructed according to this invention the driving wheel runs in
a larger or rail wheel that acts also as a fly wheel.
In carrying out this invention as applied to a cycle wheel, the larger or rail
wheel consists of a felloe or rim stayed by wires or rods straight or curved on
its two sides that extend a slight distance inwards forming a kind of annular
cage. The driving wheel runs in this cage on the interior surface of the felloe
or rim. The driving wheel is provided with the usual pinion geared to a wheel
on the pedal or bottom bracket axle.
The felloe of the rail wheel may be provided with a pneumatic tire.
T
11907
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.
I, LOUIS LEON IZART, Engineer, of Asnieres, in the Republic of France, 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:
In a wheel constructed according to this invention the driving wheel runs in
a larger or track wheel that acts also as a fly wheel.
In carrying out this invention as applied to a cycle wheel, the larger or track
wheel consists of a felloe or rim stayed by wires or rods straight or curved on
its two sides that extend a slight distance inwards forming a kind of annular
cage. The driving wheel runs in this cage on the interior surface of the felloe
or rim and is provided with the usual pinion geared to a wheel on the pedal or
bottom bracket axle.
The felloe of the track wheel may be provided with a pneumatic tire.
In the accompanying drawings Fig. 1 is an elevation of a wheel constructed
according to this invention showing its application as the driving wheel of a
bicycle. Fig. 2 shows on a larger scale a section through the point of contact
of the driving wheel and its track wheel. Fig. 3 is an elevation of a special track
wheel formed of straight and alternate curved parts.

page_text: A felloe C of wood or other suitable material, provided with a tire A of suit-
able form receives on its lateral sides, stays a of which the multiple crossings
form a kind of cage for the driving wheel D which runs between the stays on
the inner surface of the felloe and may be of any ordinary construction except
for the diameter which will always be less and of proportions to be determined in
relation to the diameter of the track wheel.
As in the ordinary bicycle the axle of the driving wheel carries a pinion F
with chain G for transmitting the motion of the pedal H.
On being rotated the driving wheel advances in the lower part of the rail
wheel in (Fig. 1) and by its momentum forces the rail wheel round. A lever
action is thus set up by the displacement of the axle of the driving wheel, the
part of the rail wheel tends to rise and greatly helps the driving wheel in its
function.
In the application of the improved wheel system to velocipedes a soft and
regular rolling is obtained the vibration being greatly reduced.
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:
-
The combination of a wheel D) with a track fly wheel C substantially as
described with reference to the annexed drawing.
Dated this 6th day of September 1898.
WHEATLEY & MACKENZIE.
40, Chancery Lane, London, Agents.