Improvements in the Construction of Nave Stocks and Facing Caps of Resilient Hubs of Wheels.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in the Construction of Nave Stocks and Facing Caps of
Resilient Hubs of Wheels.
I, WILLIAM EDWARD CARMONT, of Helmsdale, Kingston on Thames, Surrey,
Engineer, do hereby declare the nature of this invention to be as follows:-
The purport of this invention, is to arrange flanges or segments of flanges on
the outer faces of a nave stock, and corresponding Hanges or segments of flanges
on the inner faces of caps which can be screwed or otherwise affixed thereto,
such as by collars forming the axle boxes or bushings, either alone or in con-
junction with nuts or keys by which a nave or hub can be made complete.
The flanges or segments of flanges may be plain faced or provided with
hollows or stud like projections, or be made wavy with a kind of interlocking
action of the cap flanges for locating rubber rings or segments of rings or pieces
of rubber in position as the resilient body.
The flanges or segments of flanges of the nave stock and caps respectively fit
over one another to enclose the rubber, each flange or segment having full
surface contact with the rubber by the crowding up action of the caps when
secured in position.
If the flanges of the nave stock and of the caps respectively be segmental,
they may be in the same circular line or liues with the ends of the segments
out of touch, which will allow of some of the rubber being crowded in the spaces
so formed as to prevent any tendency to creep, and these spaces may be in
substitution for the studs or wavy faces before referred to.
H GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said William Edward Carmont.
Improvements in the Construction of Nave Stocks and Facing Caps of
Resilient Hubs of Wheels.
1. WILLIAM EDWARD CARMONT, of Helmsdale, Kingston on Thames, Surrey,
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:-
This invention has for object, a novel construction or arrangement of hub

page_text: frame or parts thereof for holding and supporting india rubber washer like
rings as the resilient material in the hubs of wheels for road vehicles.
For the purpose of my invention, I form in each of the two faces of a hub
proper segmental wings at parts thereof which are intersected by segmental
wings of end plates and for annular channels in which rubber,rings can be
located, the spaces between the several wings and of the ends thereof allowing
for expansion of the rubber as the resilient body on which the load is supported.
My invention is represented on the annexed sheets of drawings.
Figure 1 face view of one side face of the hub proper.
Figure 2 edge view of hub.
Figure 3 inner face view of one of the end plates.
Figure 4 edge view of same, the two end plates being alike.
Figure 5 edge view of hub proper and of the two face plates in the position
they occupy in relation to each other.
Figure 6 vertical section of hub proper and the two face plates with the
rubber resilient rings in place between the wings.
A hub proper. B, holes for spoke ends. C, C, inner segmental wings on the
two outer faces alternately arranged.
ง
C', C, intermediate segmental wings. C³, C³, outer segmental wings in
circular formation with intervening recesses or gaps 1), D, into which the several
wings E, E, E, E¹, E, E², of two face plates F, F, become loosely located when
the three parts are in their respective places.
G, G india rubber rings occupying the annular channels formed between the
wings of the three parts which outer wings collectively form a shield as the
outer periphery of the hub A and end plates F, F, the ends of the wings not being.
in touch with each other to allow of play between them due according to the
load carried and the oscillations of the wheel during its travel.
I, inside hollow bolt with flange J at one end and a screw thread at the other
on which is a nut K capable of being screwed up by a spanner or wrench to
squeeze the end plates F, F, up to the rubber rings G, G, to the necessary
degree to prevent wobbling and to preserve the location of the rubber rings G, G,
in place, said hollow bolt serving also as the axle box if so desired in which
the axle of the vehicle can find a location, or a separate axle box may be sprung
inside the bolt I.
The little gaps L, L, left between the ends of the wings serve in conjunction
with the spaces M, M, left between the faces of the wings and of the bases of
the opposite wings respectively serve for the rubber when under compression
to be squeezed into and so prevent the hub creeping on the end plates, or of
the end plates creeping on the hub.
By this invention, the compression of the rubber due to the load becomes
distributed over the entire area of the rings G, G, both above and below the
axial vertical line, and as the wheel travels, this compression is ever variable,
so that the parts of the rubber not under compression are free to expand and so
maintain the resiliency of the same and prevent any part becoming rigid, such
as when the rubber is so confined or wholly boxed in.
Prior to my invention a resilient pneumatic hub for a wheel was known in
which the compression took place, practically over the entire half of each one
of two complete concentric rings, which were employed on the hub and outer
part of the wheel.
In my present invention, the concentric rings, as they are termed, are formed
in segments, neither one being complete until the hub A and face plates F are
brought together, whereby the compression of the rubber instead of being
exerted over one entire half of either ring is distributed proportionally to
different parts.
In other words, assuming that the wheel was so placed that the flanges E
in Figure 3 of the drawings, was at the apex, the compression would be by the
said flanges E2 on the outer rubber ring and on the upper two of the flange E

page_text: on the inner rubber ring, for the half circumference above the axle; and for the
half circumference below said axle it would be by the two lower flanges E on
the inner rubber ring, and by the single lower flange E¹ on the outer rubber
ring. The compression is thus distributed over two rings, one sixth part of
the circumference of the outer ring being compressed above and two-sixths of its
circumference below the axle. The distribution on the inner ring will be
reversed two-sixths of its circumference being under compression above,, and
one-sixth below the axle.
When one of the flanges C2 is at the apex, the points of compression will be
reversed, the flanges E2 acting upon two portions of the outer ring and the
flange on the inner ring above the axle, the lower flange E acting on the
inner ring, and the two flanges El acting upon the outer ring below the axle.
In this manner my invention insures a constant and uniform change of con-
ditions during the rotation of the wheel. Moreover, those portions of the rubber
rings not under compression can expand freely and thus prolong the term of
use of the rubber.
By my invention, I always take my bearing upon both rings above and both
rings below the axle, whereas, in the wheel prior to my own the bearing was
upon one ring above the axle and upon the other ring below the same.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is:-
A wheel hub consisting of segmental wings C, C1, C2, in outer opposite faces
of hub proper A, segmental wings E, E1, E2, in inner faces of end plates F. and
arranged to intersect each other both circumferentially and at the ends, inter-
mediate rubber rings G, G, hollow bolt I and tightening nut K, as specified and
substantially as shown.
The Hth day
of December 1899.
H GARDNER,
Patent Agent, 166, Fleet Street, London.
Agent for the said William Edward Carmont.