Improvements in and connected with Driving Hubs and Chain Wheels of Cycles, and the like.
Year: 1898

page_text: Date of Application, 1st Feb., 1898
Complete Specification Left 31st Oct 1898-Accented 3rd Dec. 1900
PROVISIONAL SPECIFICATION.
Improvements in and connected with Driving Hubs and Chain Wheels
of Cycles, and the like.
I, JOHN HOWARD PLANT, of Abberley Works, Abberley Street, Dudley, in the
County of Worcester, Manufacturer, do hereby declare the nature of this inven-
tion to be as follows:-
The chain wheel to which this invention primarily relates is made with a
central boss which is cupped out on its inner side to form the bearing (sometimes
called cup or ballrace) in which the balls revolve; and such boss is made so
that it may be pressed or fitted into the end of the hub-shell which it fits tightly.
Applying my invention to the foregoing, projecting from that end of the hub
shell into which the cupped out boss of the chain wheel fits I make two or more
arms or prongs, and with or without a shoulder at their base, i.e. on the outer
extremity of the shell from which the arms spring or project.
These arms or prongs are so formed as to pass through holes or slots which I
form in the chain wheel to receive them, and which holes or slots they preferably
fit on all sides except at top where the hole may be enlarged upwards for the sake
of reducing weight. These arms or prongs are screw threaded on their outer
surfaces, and made a suitable length in order that when the cupped out boss is
fitted in and pressed home in the hub shell they (the arms or prongs) project
through the holes or slots a convenient distance beyond the outer face of the chain
wheel, and on and around these projecting arms or prongs I screw a lock ring
(for the purpose of securing the whole together) the inner side of which ring when
screwed home abuts against the outer face of the combined chain wheel.
In order to reduce weight and to improve the appearance of the hub the outer
face of the chain wheel may be suitably recessed to receive the lock ring.
The invention is also adaptable to a combination in which the boss of the
chain wheel is cupped out on its outer side or face.
Dated the 31st day of January 1898.
COMPLETE SPECIFICATION.
Improvements in and connected with Driving Hubs and Chain Wheels
of Cycles, and the like.
I, JOHN HOWARD PLANT, of Abberley Works, Abberley Street, Dudley, in the
County of Worcester, Manufacturer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
-
The chain wheel to which this invention primarily relates is made with a

page_text: central boss which is cupped out on its inner side to form the bearing (sometimes
called cup or ball-race) in which the balls revolve; and such boss is so made that
it may be pressed or fitted tightly into the end of the hub shell.
Applying my invention to the foregoing-projecting from that end of the hub
shell into which the cupped out boss of the chain wheel fits I make two or more 5
arms or prongs, and with or without a shoulder at their base, i.e. on the outer
extremity of the shell from which the arms spring or project. These arms or
prongs are screw threaded on their outer surfaces and are made a suitable length
for the purpose hereinafter mentioned.
I make two or more holes or slots through the chain wheel between its rim and
the boss or cup to correspond with and fit the before mentioned arms or prongs.
I then fit the boss or cup tightly into the end of the hub shell, passing the said
arms or prongs through the said holes or slots in the chain wheel.
Having done this I secure the parts together by screwing a lock ring on and
around the arms or prongs which project a convenient distance beyond the outer
face of the chain wheel: such lock ring is screwed home and the chain wheel is
preferably recessed to receive it.
The invention is also adaptable to a combination in which the boss of the
chain wheel is cupped out on its outer side or face.
In the accompanying drawing
Figure 1 is a side view of the hub, showing the chain wheel end thereof, the
chain wheel and lock ring in section.
B is the hub shell.
B2, B2 are two projecting arms or prongs."
Fis the chain wheel.
E is the lock ring.
P is the usual nut on the end of the spindle.
Figure 2 is an end view of Figure 1 with the nut P' omitted.
B2B are ends of 2 arms or prongs which have passed through the holes in
the chain-wheel 1, the face of which is preferably recessed as shown in drawing
to receive the lock ring E, which latter is screwed on and around 132 13².
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 arms or prongs threaded on their outer surfaces, projecting from the
chain wheel end of the hub shell; and the corresponding slots or holes made in
the chain wheel to receive and fit the same as and for the purpose described.
(2) The method of securing the hub shell and chain wheel together by means
of passing the said arms or prongs through the said slots or holes and then
screwing a lock ring on and around the projecting arms or prongs as hereinbefore
described.
Total this 90th day of October 1898.