Improvements in or connected with Hubs for Wheels.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in or connected with Hubs for Wheels.
We, GEORGE TILLOTSON, of Providence Works, Shipley, in the County of York,
Engineer, and ALBERT JOHN MURPHY, of Preston House, Leeds, in the County
of York, Brewer's Chemist, do hereby declare the nature of this invention to be
as follows:-
The object of our invention is to construct elastic hubs for wheels, in such a
manner that the axle cannot be bent at an angle to the plane of the wheel, whilst
at the same time the hub is of an extremely elastic form and the parts which are
separated by the elastic material are kept in mechanical gear without unduly
straining the said elastic material through the strain of rotation of the hub.
The hub is constructed in two parts, viz. the inner and the outer, and the
inner hub is formed in two sections which are bolted together by distance bolts
or distance pieces, which hold the sections firmly together with a gap between
them. The periphery of the inner hub, is constructed in a slightly concave form,
and the interior of the hub is enclosed in such a manner that the oil or other
lubricant fed to the bearings is prevented from passing to the gap between the
sections. The outer hub is tormed with a central flange or disc which fits in the
gap between the sections of the inner hub, and portions of the said flange are cut
away to form recesses which embrace the distance bolts and gear the inner and
outer hubs together, at the same time allowing free play between the two parts.
The interior surface of the outer hub is constructed in a concave form on each
side of the central flange, and when the parts are placed together, pneumatic or
other elastic tubes or cushions are placed in the two circular recesses on the sides
of the central flange and effectually cushion the two hubs from each other.
Friction rings or other sliding surfaces may be provided on the exterior of the
inner hub or on the tubes themselves, for the purpose of taking the friction
between the hub surface and the tubes.
In cases where pneumatic tubes are employed as the elastic medium, we prefer
t make the valve connections by affixing a small tube to the side of the main tube,
and to carry the small tube through the outer hub where it is held by the valve.
This arrangement gives the tubes greater play and makes them less liable to
tear.
Dah: CAL
30
1007

page_text: of York, Brewer's Chemist, 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 object of our invention is to construct elastic hubs for wheels, in such a
manner that the axle cannot be bent at an angle to the plane of the wheel, whilst
at the same time the hub is of an extremely elastic form and the parts which are
separated by the elastic material are kept in mechanical gear without unduly
straining the said elastic material through the strain of rotation of the hub.
In order that our invention may be clearly understood, we will proceed to
describe same with reference to the accompanying drawing, in which similar
letters refer to like parts in both figures.
Figure 1 is a cross section shewing a hub constructed in accordance with our
invention, and Figure 2 is a sectional side view of same.
According to our invention, the hub is constructed or made up of two parts or
portions, namely; an inner portion and an outer portion. The inner portion is
composed of two sections A, A, which are bolted together by distance bolts or
distance pieces B, and the latter hold the sections A, A firmly together but in
such a position as to leave a gap or space 1 between them. The periphery of the
sections A, A is constructed in a slightly concave form at E, and the interior of
said sections A, A is separated from the axle F by means of a tube or boss G, in
such a manner that the oil or other lubricant fed to the bearings H is prevented
from passing to the gap D between the sections A, A.
The outer portion of the hub is composed of a duplex shell J, J, formed in con-
junction with a central flange or disc K, which latter fits in the gap between
the sections A of the inner portion; and the said flange or disc K is cut away so
as to form recesses L which embrace the distance bolts B, thus gearing the inner
and outer portions of the hub together, at the same time allowing free play
between the two portions. The interior surface of the outer portion is constructed
in a concave form at M on each side of the central flange K; and when the parts
are placed together, pneumatic or other elastic tubes or cushions N are placed in
the two circular recesses formed at each side of the central flange K, thus
effectually cushioning the two portions of the hub from each other.
Friction rings P or other sliding surfaces may be provided on the exterior of
the sections A or on the tubes N themselves, for the purpose of taking the fricton
between the said sections and tubes.
In cases where pneumatic tubes are employed as the elastic medium, we prefer
to make the valve connections by affixing small tubes R to the side of the main
tubes N, and to carry the said small tubes R through the outer shell J where they
are held by the valves S. This arrangement gives the tubes R greater play and
makes them less liable to tear.
As the inner portion is rotated by means of the chain-wheel T, the tubes N are
twisted or slide on their friction rings or surfaces P, and the bolts or distance
pieces B are brought into contact with the front edges of the recesses L, thus
ensuring a mechanical gearing between the two portions of the hub. It will thus
be seen that the tubes N need not be subjected to severe transverse strain, as has
hitherto been the case where the tube or cushion has been employed to connect the
outer and inner portions together.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
1. In hubs for wheels, an outer duplex shell having a central flange, in com-
bination with an inner portion having a gap in which the central flange works,
the outer and inner portions being insulated from each other by pneumatic or
other cushions and being mechanically geared together, substantially as and for
the purposes set forth.

page_text: 2. In hubs for wheels, the inner portion composed of two sections connected
together by bolts or distance pieces, having a gap between same, in combination
with a central flange working in the gap and having recesses for mechanically
gearing with the bolts or distance pieces, substantially as and for the purposes set
forth.
3. The combination of the sections A, A, distance bolts B, boss G, axle F,
bearings H, duplex shell J, J, disc K, recesses L, tubes N, friction rings P,
tubes R and valves S, substantially as and for the purposes set forth.
Dated this 5th day of June 1897
BREWER & SON,
London and Leeds, Agents for the Applicants.