An Improvement on the Safety Bicycle.
Year: 1894

page_text: Date of Application, 21st Dec., 1894
Complete Specification Left, 21st Sept., 1895-Accepted, 26th Oct., 1895
PROVISIONAL SPECIFICATION.
An Improvement on the Safety Bicycle.
I..WILLIAM EVANS Stone Mason 1 Providence Terrace Church Road Nechells
Birmingham do hereby declare the nature of this invention to be as follows:-
The object of my invention is to reduce labour and gain speed. I effect this
by using a lever bar moved by an eccentric wheel working in a slot at the end of
the lever bar, the lever bar being attached to the connecting rod, which is
attached to the crank, on the back wheel.
The eccentric wheel is worked from the pedals by having attached to it a small
cog wheel working into the cog wheel attached to the pedals which cog wheel
ordinarily works the chain, thus dispensing with the use of the chain.
Or in place of the eccentric wheel I use a crank attached to the smaller cog
wheel.
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101 T
1004
COMPLETE SPECIFICATION.
An Improvement on the Safety Bicycle.
I WILLIAM EVANS of 1 Providence Terrace Church Road Nechells
Birmingham Stone Mason 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 reduce labour and gain speed. I effect this by
using a lever bar moved by an eccentric wheel working in a slot at the end of
the bar, this lever bar being attached to the connecting rod which is attached to
the crank on the back wheel.
The eccentric wheel is worked from the pedals by having attached to it a small
cog wheel working into the cog wheel attached to the pedal which ordinarily works
the chain.
Or in the place of the eccentric wheel I can use a crank attached to the smaller
cogwheel.
Or in the place of the eccentric wheel I can use connecting rods attached to the
pedal bars the other end being attached to the lever bar, from the other end of the
lever bar is a connecting rod to the larger cog wheel, the larger cog wheel working
into the smaller cog wheel, by which means I increase the number of revolutions
of the driving wheel for each stroke of the pedals.
My invention chiefly consists in substituting a lever bar for the ordinary chain
and I do not wish to confine myself to any particular method of conveying the
action of the pedals to work the lever bar. But as the thirdly described method
is the one which I prefer, I will proceed to more fully describe it by the aid of the
accompanying drawing.
a is one of the connecting rods attached by loose pivot to the pedal bar at b
the other end being pivotted to the lever bar at c. The lever bar d works from
the fulcrum e where it is attached to the bicycle frame f. At the other end of the
Price 8d.1

page_text: lever bardat gis pivotted the connecting rod h, the other end of which is pivotted
at i to the larger cog wheel Z which takes into the smaller cog wheel m.
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:
Working the driving wheel of safety bicycles by means of a lever bar sub-
stantially as described herein..