Improvements in and relating to Velocipedes
Year: 1892

page_text: This Print is in accordance with the Original Specification as it stands nfter
Amendment (under Section 18 of the Patents, &c. Act, 1883), as allowed by
the decision of the Chief Examiner of the 2nd day of October 1896.
Date of Application, 25th Apr., 1892
Complete Specification Left, 25th Feb., 1893-Accepted, 8th Apr., 1893
PROVISIONAL SPECIFICATION.
Improvements in and relating to Velocipedes,
I RICHARD WILLIAMS THOMAS of 121 Cheapside in the City and County of
London, Photographer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to an improved construction of wheel, the object being to
obtain a wheel which will give all the resiliency of a pneumatic tyred wheel without
any of the defects thereof, and I attain this end by making the hub of the wheel in
two parts and interposing between the said parts an air-inflated cushion or
chamber.
In carrying my invention into effect I proceed as follows:-On an axle of the
ordinary type 1 mount in the ordinary manner a hub, carrying a chain wheel if the
wheel is intended to be a driving wheel. Outside this hub is a second hub to which
the spokes of the wheel are attached. The space between the two hubs is filled with
a cushion or chamber adapted to be inflated with air or gas under pressure, to which
end the said cushion or chamber is provided with a suitable valve. On to the sides
of the inner hub are fixed plates having two or more holes drilled or formed therein,
which holes are adapted to engage with studs or projections on the sides of the
outer hub. The holes in the plates fixed to the inner hub are of a larger diameter
than the studs on the outer hub so as to allow of the movement of the one hub with
respect to the other and yet permit of the driving power imparted to the inner hub
being communicated to the outer hub. With this construction of wheel a solid
tyre may be used.
Dated this with day of Anvil 1×09
COMPLETE SPECIFICATION (AMENDED).
Improvements in and relating to Velocipedes.
I, RICHARD WILLIAMS THOMAS, of 121 Cheapside, in the City and County of
London, Photographer, 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:—
My invention relates to an improved construction of wheel, the object being to

page_text: obtain a wheel which will give all the resiliency of a pneumatic tyred wheel without
any of the defects thereof, and I attain this end by making the hub of the wheel in
two parts and interposing between the said parts an air-inflated cushion or
chamber.
In the accompanying drawing which illustrates the hub of a wheel constructed
according to my invention,
Figure 1 is a view in front elevation-half in section-and Figure 2 is a view―
half in section-in side elevation.
Similar parts are marked with like letters of reference in both views.
On an axle A of the ordinary type is mounted in the ordinary manner a hub B.
Outside this hub is a second hub C carrying flanges c, c, to which the spokes of the
wheel are attached. The space between the two hubs B and C is filled with a
cushion or chamber D adapted to be inflated with air or gas under pressure, to
which end the said cushion or chamber is provided with a suitable valve E. On to
the sides of the inner hub B are fixed plates B¹, B', having two or more holes b
drilled or formed therein which holes are adapted to engage with studs or pro-
jections C¹ carried by the outer hub C. The holes 6 in the plates B' B¹, are of a
larger diameter than the studs or projections C carried by the hub C, so as to allow
of the movement of the one hub with respect to the other in all directions and yet
permit of the driving power imparted to the inner hub being communicated to the
outer hub. In the top half of Figure 1 the cushion or chamber is shown deflated,
and in the bottom half thereof inflated.
Both the inner hub B and the outer hub C are corrugated or have recesses or
projections formed in them as shown by the accompanying drawing, to enable the
inflated cushion or chamber to get a good grip on both.
Small loose plates may be used to cover the holes b in the plates B¹ to prevent
the air cushion or chamber D from protruding therethrough.
When the hub is intended for a driving wheel the part B is extended on one side
to carry the driving chain wheel, and when it is intended for a non-driving wheel
the holes 6 in the plates B' and the studs or projections C¹ on the part C may be
dispensed with.
I am aware that it is not broadly new to form the hub of a wheel in two parts
and interpose an elastic cushion between them and I do not therefore claim such
broadly, but
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The improved construction of elastic hub, substantially as herein before
described and illustrated by the accompanying drawing.
2. In a velocipede wheel having an elastic hub, providing for the transmission of
driving power from one part of the hub to the other, as set forth.
Dated this 25th day of February 1893.