An Improved Method of Constructing the Hubs of Wheels for Velocipedes or similar Vehicles.
Year: 1894

page_text: Date of Application, 3rd July. 1894
Complete Specification Left, 3rd Apr., 1895-Accepted, 18th May, 1895
PROVISIONAL SPECIFICATION.
An Improved Method of Constructing the Hubs of Wheels for
Velocipedes or similar Vehicles.
JAMES WILLIAM BAYLISS Hood Street Coventry Mechanical Engineer do
hereby declare the nature of this invention to be as follows:-
My invention consists in making the body or centre part of the hubs, separate
from the bearing cups or driving teeth, so that when either of these is worn it may
be replaced easily & quickly.
I construct the body of the hub in one or more parts of suitable material, of a
tubular form with flanges for the attachment of the spokes, through this body passes
another tube, to one end of which I attach a bearing cup, & to the other a bearing
cup or driving flange, as may be required, such driving Hange to be provided with
teeth or other means of transmitting power. Where two bearing cups only are
required, fit each with a male cone, a corresponding female cone being constructed
in the body, this arrangement prevents their working loose. Where the driving
flange is required I provide on that face of the flange which approaches the body
of the hub, a tooth-like projection of suitable shape, which engages in а
corresponding depression in the face of the hub-flange, or vice-versa.
The tube passing through the body is firinly attached to one of the bearing-cups,
or to the driving flange, as the case may be, & is screwed externally at the other
end, the bearing cup at that end being provided with a corresponding internal
thread, so that all the parts may be firmly drawn together.
I claim that by the use of suitable driving flanges, I can not only alter the
relative gearing of the chain wheels, but can also vary the distance from the centre
of the wheel to the centre of the width of the chain, which is an advantage in the
construction of velocipedes.
Dated this Second day of July 1894.
COMPLETE SPECIFICATION.
An Improved Method of Constructing the Hubs of Wheels for
Velocipedes or similar Vehicles.
I, JAMES WILLIAM BAYLISS, the younger, of Hood Street, Coventry, in the
County of Warwick, 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 relates to an improved construction of the hubs of driving wheels
for velocipedes and like vehicles, my object being to so construct and arrange a
detachable hub in combination with a ball bearing cup or race, and a chain wheel
or chain teeth, that the parts may be readily and securely connected together and
quickly disconnected or detached when required.

page_text: In the accompanying sheet of explanatory drawings to be hereinafter referred to,
Figure 1 represents my improved hub, with chain wheel, and ball cup or race
when connected together, Figure 2 being a sectional view of the same.
Figure 3 is an end view of the ball cup or race.
Figure 4 is an end elevation and Figure 5 a side elevation of the chain wheel
with the hollow stem or connecting tube attached thereto.
Figure 6 is an end elevation and Figure 7 a side elevation of my independent
hub.
The same figures in the different views indicate the same parts.
I form the hub preferably in one piece from suitable metal, having a hollow or
tubular body A with flanges B B' at each end for attachment of the wheel spokes.
Upon one end or extremity of the hub I provide recesses or a recess such as C
Figures 6 and 7 for the reception of corresponding claws or a claw or
projection such as D on the chain wheel as illustrated at Figures 1, 4 and 5. 1
sometimes form the claw or projection upon the end of the hub and the
corresponding recess or recesses upon the chain wheel.
The hollow stem or connecting tube E (Figure 5) is of such external diameter as
to enable it to be readily passed through the hub. One end of the stem is secured
to the chain wheel, whilst the opposite end has an external thread cut upon it for
screwing into the ball bearing cup or race F, Figure 2. The inner ends of the
chain wheel and the ball race have conical or other projecting bosses for fitting into
the conical or other seatings formed at each end of the hub. To securely connect
together the hub, the chain wheel and hollow stem, and the ball cup or race F, the
stem E is passed through the hub with the claw or claws in position for forming
the coupling or engagement, and the ball cup F is then screwed on to its end. The
conical or other boss of the ball cup is thus forced tightly on to its conical or other
hub seating, while the chain wheel is at the same time drawn tightly against the
hub, the conical or other boss of the chain wheel bearing against the adjacent
conical or other seating. The parts are readily disconnected by unscrewing the
ball cup from the hollow stem. The front or outer side of the chain wheel boss is
formed as a ball cup or race as illustrated.
By thus forming the hub, chain wheel, and ball cup or race, in separate parts and
connecting them together in the manner hereinbefore described, either of the parts
may be quickly replaced when worn or damaged, while the ratio between the
revolutions of the crank and the driving wheel may be readily varied by substituting
a larger or smaller chain wheel on the driving wheel hub.
I do not limit the application of my invention to any particular form of hub, or
chain wheel or chain teeth, but adapt it for wheels of varying pattern for cycles
and like vehicles.
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 driving wheels of velocipedes and other vehicles, the method of connecting
the hub with the chain wheel or driving teeth, by means of a central screwed stein
with an independent screwed ball cup or race and a claw or like coupling arranged
substantially as herein before described and as illustrated in the accompanying
drawings.
2. The construction of a hub for the driving wheel of a velocipede or other
vehicle, having a coupling projection or recess for engagement with a corresponding
recess or projection on the chain wheel, and a conical or other seating for the
reception of the projecting boss of the chain wheel substantially as and for the
purposes hereinbefore described and as illustrated in the accompanying drawings.
3. In velocipede and other vehicle wheels, the use of an independent ball cup
or race having a conical or other boss for fitting upon a like seating formed in
the hub, and an internal thread for screwing on to the hollow stem or connecting

page_text: tube, substantially as and for the purposes hereinbefore described and as illustrated
in the accompanying drawings.
4. The improved general construction and arrangement of the hub and chain
driving teeth of a velocipede or other vehicle wheel substantially as and for the
purposes herein described.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents for the Applicant.