An Improved Pneumatic Hub for Cycles, Motor Cars, and other Vehicles.
Year: 1899

page_text: Date of Application, 22nd Nov.,
1899
Complete Specification Left, 27th Jan., 1900-Accepted, 17th Nov., 1900
PROVISIONAL SPECIFICATION.
An Improved Pneumatic Hub for Cycles, Motor Cars, and other
Vehicles.
I, THEOPHILUS COAD, of 81, Southwark Bridge Road, London, Electrical
s-follows:-
Engineer, do hereby declare the nature of this invention to be as-:
-
The hub of the wheel is made elastic preferably by means of an indiarubber
chamber fitted with a properly constructed valve, the said chamber being filled
with air and enclosed in a case of suitable material and form.
On the box of the wheel is fitted a loose collar this collar passes through an
aperture in the centre of the elastic chamber or cushion.
The box of the wheel is preferably connected with the case which holds the
elastic chamber or cushion by means of suitable springs, and suitably constructed
covers are fitted to the hub to protect springs and cushion.
The case which holds the elastic chamber or cushion is fitted with flanges for
the purpose of fixing the spokes which connect the rim and tyre to the hub of
the wheel.
1000
An Improved Pneumatic Hub for Cycles, Motor Cars, and other
I, THEOPHILUS COAD, 81,
Vehicles.
Southwark Bridge Road, London, Electrical
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: —
The hub of the wheel is made elastic preferably by means of an indiarubber
chamber fitted with a properly constructed valve, the said chamber being filled
with air and enclosed in a case of suitable material and form.
On the box of the wheel is fitted a loose collar this collar passes through an
aperture in the centre of the elastic chamber or cushion. The box of the wheel
case which holds the elastic chamber or
is preferably connected with the
cushion by means of suitable springs, and suitably constructed covers are fitted
to the hub to protect springs and cushion.
The case which holds the elastic chamber is fitted with flanges for the pur-
pose of fixing the spokes which connect the rim and tyre to the hub of the wheel.
For purposes of illustration, I will now refer to the annexed drawings in
which:
Figure 1 is a side elevation shewing my improved hub and parts.

page_text: a is a casing formed in the required number of sections preferably two as
shewn, being connected together by means of the screws or bolts or other
convenient means and having the protecting or covering plates c. d is an air
chamber formed of suitable material which may be inflated when required
through the medium of the valve c. f is a rubber surface carried upon the
sleeve which is in turn carried upon the spindle through the medium of ball
bearings or other suitable arrangement. This form of wheel is suitable for
vehicles which are not driven from the axle or spindle carrying the wheel. In
the event of the invention being applied to cycles or other vehicles in which the
driving power would be exerted from the sleeve g, in this case I provide the
spring which engages at the point j, with the collar or flange k, and at the
point with the part in communication with the part of the hub m which could
carry the spokes. The. rubber surface f is in this case free to rotate and it
will be seen that upon the driving power being applied to the sleeve g the
spring will be brought into operation for the purpose of driving the casing
or part of the hub m carrying the inflated chamber d, thus preventing the
rubbing between the surface n of the inflated chamber and the rubber surface f
carried upon the sleeve g as the driving would be effected through the medium.
of the spring which may be of any convenient form such as helical.
Although I have shewn covered plates as forming part of the casing c it will
be readily understood that these may be, if desired, separately connected or.
attached to the casing in any convenient manner.
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 pneumatic hub or cushion, substantially as described and illustrated
herein and for the purpose' set forth.
2. In pneumatic hubs, a casing adapted to carry the spokes of the wheel-and
containing an air chamber, a loose collar or bearing surface formed of rubber
or other suitable material upon which said air chamber bears, said loose collar
being carried upon a suitable sleeve in conjunction with a supporting spindle,
and antifrictionaly mounted, a spring of suitable form in connection with the
sleeve aforesaid and the casing carrying the inflated air chamber, for the pur-
pose of enabling the casing aforesaid, which will be in connection with the
spokes of the wheel or other driving power to be driven without necessitating
rubbing between the inflated air chamber and the collar upon which it bears,
substantially as described and illustrated herein and for the purpose set forth.
3. In bearings or hubs of the class herein described, the employment of a
connecting or driving spring, between the driving axle and the driven part of
the hub, substantially as described and illustrated herein and for the purpose
set forth.
Dated this 25th day of January 1900.