Year: 1887

page_text: I, CHARLES LURIE, of 19, Blackheath Road, Greenwich, in the County of Kent,
Velocipede Manufacturer do hereby declare the nature of this invention to be
as follows:-
:-
The object of my Invention is to remove or reduce the lateral strain upon the
wheels of velocipedes by communicating or transmitting the power to the centre of
the driving wheel, which I effect in the following manner;-
I take the power from the pedal shaft in the ordinary manner by chain and chain
pulleys; the second chain pulley I fit upon the axle of the driving wheel, but without
fixing it thereto; to this chain pulley I fix a radial arm, preferably about two
thirds of the length of the spokes, the outer of which terminates at a point vertical
to the centre of the wheel; to the centre of the axle of the wheel I fix another
radial arm, co-terminous with the aforenamed chain pulley arm, and connected
with the rim of the wheel by diagonal stays or rods; and I connect the two radial
arms by links or otherwise.
+ Danmhar 1987
FREDERIC BAPTY,
Greenwich,
Agent to the said Charles Lurie

page_text: I, CHARLES LURIE of 19, Blackheath Road, Greenwich in the County of Kent,
Velocipede Manufacturer, 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 my Invention is, to remove or reduce to a minimum the lateral
strain or twist upon the driving wheels of Velocipedes, especially such as are driven
by one wheel worked by a chain and known as "Safety" Velocipedes, by com-
municating or transmitting the power to the centre of the driving wheel, which I
effect in the following manner;
I take the power from the pedal-shaft, as usual, by chain and chain-pulleys.
I fit the second chain-pulley upon the axle of the driving wheel so that it shall
revolve freely thereon, by the side of the nave or hub of the wheel, but without
fixing it thereto as heretofore, and I make this chain-pulley with a radial-arm curved
inwards and terminating at a point vertical to the centre of the wheel.
Upon the centre of the nave or hub of the driving wheel I make or fix another
radial-arm of about the same length as the former, the outer end of which I connect,
with the rim of the wheel by diagonal rods or stays, and with the aforenamed chain
pulley arm by links or otherwise.
In some
cases I dispense with the second named radial-arm and connect the
chain-pulley-arm with the rim of the wheel by means of the diagonal rods; and in
other cases I dispense with the diagonal rods.
In the accompanying Drawings
Fig. 1, is a side view of part of a wheel, with the Invention as usually applied.
Fig. 2, is a back view, partly in section, of so much of the same wheel as is
necessary to shew the Invention as applied.
A, is the chain-pulley-radial-arm.
B, the central-radial-arm on the nave or hub of the wheel.
C, C1, the diagonal rods or stays.
D, Di, the links connecting A, & B.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I declare that what
I claim is
1. In connexion with the driving wheels of Velocipedes, the application and use of
a radial-armed-chain-pulley, as described, for the purpose of transmitting the power
to the centre of the wheel, by any suitable attachment.

page_text: 2. In the driving wheels of Velocipedes the application and use of a central-
radial-arm made upon, or fixed to, the nave or hub of the wheel for the purpose of
receiving the power.
3. In Velocipedes having driving wheels worked by chains, the transmission of
the power to the centre of the wheel in the manner set forth, or otherwise; and
4. The general combination and arrangement of a "Central Driver Safety"
Velocipede as described and illustrated.
FREDERIC BAPTY,
Agent to Charles Lurie.