An Improved Pneumatic Hub for Wheels of All Kinds.
Year: 1896

page_text: Date of Application, 7th Apr., 1896
Complete Specification Left, 9th Dec., 1896--Accepted, 6th Mar., 1897
PROVISIONAL SPECIFICATION.
An Improved Pneumatic Hub for Wheels of All Kinds.
1, HENRY CROOK BEVAN Blaina Monmouthshire Medical Practitioner do
hereby declare the nature of this invention to be as follows:-
Around the flanges of the hub where the wire spokes are usually attached I fix
or form a hollow rim to receive an annular pneumatic tube. I attach the hub end
of the spokes to a similar rim the concavity of which faces the concavity of the
rim on the huh. Between these two rims I introduce an inflatable pneumatic tube..
This when inflated will form a cushion to receive and neutralise all the vibration of
the wheel.
If found necessary to prevent a sudden side twist from displacing the wheel:
from the hub forked plates engaging with set screws or studs may be added to.
connect the two edges of the rims of the pneumatic tube.
S. S. BROMHEAD,
97 Newgate Street, London, Patent Agent..
An Improved Pneumatic Hub for Wheels of All Kinds.
I, HENRY CROOK BEVAN of Blaina, Monmouthshire, Medical Practitioner,.
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 :-
This invention refers to cushioned or elastic wheels, and is designed to supply
an efficient substitute for the elastic periphery at present employed to prevent.
vibration and minimise the effect of concussion on rough roads.
Around the flanges of the hub where the wire spokes are usually attached I fix
or form a suitable rim to receive a suitable elastic cushion or annular pneumatic
tube. I attach the hub end of the spokes to a similar rim, the concavity or front
of which faces the concavity or front of the rim on the hub.
Between these two rims I introduce an elastic cushion or inflatable pneumatic
tube which will form a cushion to receive and neutralise all the vibration of the-
wheel.
In order to prevent a sudden side twist from displacing the wheel from the hub,
forked plates engaging with set screws, pins or studs are added to connect the two
edges of the rims of the pneumatic tube.
I will now describe my invention with reference to the accompanying drawings.
in which:
Fig. 1 shows a sectional front elevation of my pneumatic or elastic hub for the:
wheels of velocipedes or the like.

page_text: Fig. 2 shows a half sectional side elevation of Fig. 1.
Fig. 3 shows an enlarged elevation of a portion of the pneumatic ring enclosed
between the two rims, said rims being connected to cach other by the slot and pin
attachment as shown projecting from the rims.
Fig. 4 shows a horizontal cross section of Fig. 3.
a is the usual centre bolt and sleeve forming the axle or hub turning in ball
bearings as shown. b, b, are two concentric shallow rims, which are concaved on
their outer face, to receive the pneumatic or elastic ring c. This ring c is held in
place on the opposite side of a similar. concentric shallow rim d, also concaved to
partially enclose the ring c. The spokes of the wheel are fastened to rim d;
e, e, are extension pieces projecting from the outer edge of rim d, and are slotted
to receive a pin f, projecting from a corresponding plate or extension piece a of
rim b. As shown the extension pieces e. g. may be reversed, e to project from
rim b, and g. to project from rim d. The object of this slot and pin attachment is
to prevent side cant or oscillation of the hub. It will be understood that the
bearing ring may be pneumatic, solid, or cushioned or in the form of solid or
hollow balls, or one set of rims and rings may be used in place of two.
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. In a wheel for velocipedes and other purposes the formation and insertion
of one or more pneumatic or elastic cushion rings placed in concentric rims between
the hub, and the inner or hub end of the spokes of said wheel, in order to obtain
an increased resiliency and smoother running of the same, and lessen vibration of
frame and pedals as herein described and set forth.
2. In a wheel for velocipedes and the like, the pneumatic hub described in
Claim 1, consisting of concentric rims b, d, to support one or more pneumatic rubber
or other tubes c, c, or a series of rubber balls (said rim b, being attached to the
the usual hub of the wheel, and rim d, connected to the ends of the spokes) in
combination with a slot and pin side attachment e, f, g, between the rims b, d, to
prevent side twist or displacement of the wheel from its plane, as herein described
and set forth.
Dated this 9th day of December 1896
S. S. BROMHEAD,
97 Newgate Street, London, Patent Agent.