Improvements in and relating to Chain or Band Driving Gear for Cycles, and for other purposes.
Year: 1896

page_text: Date of Application, 12th Oct., 1896-Accepted, 13th Mar., 1897
COMPLETE SPECIFICATION.
Improvements in and relating to Chain or Band Driving Gear for
Cycles, and for other purposes.
We JOHN GEORGE GOUGH, Inventor, and WILLIAM EDWARD HARDING,
Inventor, both of Young, in the Colony of New South Wales, do hereby
declare the nature of this invention, and in what manner the same is to be
performed, to be particularly described, in and by the following statement :-
The object of this invention is to provide an improved driving gear that may be
applied to cycles or to any machinery and consists essentially, of the peculiar
construction of an eccentric ring wheel having sprockets on its periphery and
internal cups, or an endless band provided with openings, or other equivalent
device secured internally, and gearing with a smaller wheel provided on its
periphery with round knobs, balls, cogs, or sprockets and secured to the driving
wheel of a cycle or the driving shaft of machinery.
This improved gear when attached to a cycle or like vehicle will enable a
greater speed to be obtained without increasing the energy expended, and will
also reduce the friction. The same will apply to any class of machinery having
this improved gear applied. The eccentric wheel may be so constructed without
the sprockets so as to be driven by a band or belt, when this improved driving
gear is attached to cycles or like vehicles eccentric wheels of various sizes may be
used so as to facilitate the climbing of hills, as a slow gear is most suitable for
bill climbing.
But in order that this invention may be more fully understood reference will now
be made to the accompanying sheet of drawings in which :-
Figure 1 is an elevation of the rear wheel of a bicycle with this improved gear
attached.
Figure 2 is a longitudinal sectional view of the eccentric and driving wheels.
Figure 3 is a transverse sectional view of the eccentric wheel.
Figure 4 is a sectional part view of a modification in the internal construction of
the eccentric wheel showing endless band secured therein,
Figure 5 is a transverse sectional view of Figure 4.
The
A is the rear wheel of a bicycle to the axle B of which is secured the small
wheel C provided on its periphery with round knobs, balls, cogs or sprockets D.
E is a ring wheel constructed without spokes or bars, working eccentric on C, this
eccentric wheel E is provided with sprockets F on its periphery, and internal
cups G. The internal construction of this eccentric wheel may be as shewn in
Figure 4, with the projections H and an endless band provided with openings J,
secured to said projections H by screws I or in any other suitable manner, the
knobs, balls, cogs, or sprockets D would then gear in the openings J.
chain K would pass around the eccentric wheel E and the pedal wheel L, but if
a band or belt be used to communicate the driving power from the pedal wheel L
to the eccentric wheel E the sprockets F would be done away with. It will be
obvious that by the use of this improved gear a greater speed would be obtainable
without extra power when applied to either cycles or machinery, for hill climbing
with cycles a suitable sized eccentric wheel would be used and owing to the great
leverage obtained much less energy would be necessarily expended than with
cycles of the present day. If desirable the eccentric wheel E may be placed
'

page_text: around the pedal wheel but it is preferably placed and used as shewn in the
drawings herewith.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to .be performed we declare that what we
-claim is :-
1st. The improved driving gear for cycles or machinery consisting essentially
of an eccentric wheel such as E with the sprockets F on its periphery, and
internal cups such as G, gearing with a driving wheel such as C, provided with
knobs, balls, cogs or sprockets on its periphery and being operated by a chain
passing around the eccentric wheel E substantially as herein described explained
and illustrated and for the purposes set forth.
2nd. In improved driving gear for cycles or machinery an eccentric wheel
such as E, having internal projections such as H, to which is secured an endless
band provided with openings and used to operate or gear with a driving wheel
of a cycle such as C or a toothed pulley secured to shafting of machinery
substantially as herein described explained and illustrated and for the purposes
set forth.
3rd. In improved driving gear for cycles or machinery an eccentric wheel having
internal cups such as G or an endless band provided with openings and secured
to internal projections such as H for operating the driving wheel such as C
secured to the axle of a cycle, or a toothed pulley secured to shafting of machinery
operated by a band or belt passing round the periphery of the eccentric wheel É
substantially as herein described explained and illustrated and for the purposes set
forth.
4th. The combination and arrangement of the mechanical parts herein described
explained and illustrated all together forming the improved driving gear for cycles
and machinery substantially and for the purposes set forth.
Dated this гth day of September 1890.
J. G. GOUGH.
W. E. HARDING.
Haseltine, Lake & Co.,
45 Southampton Buildings, W.C., Agents for the Applicants.