Improvements in or relating to Driving Gear for Cycles,
Year: 1898

page_text: Improvements in or relating to Driving Gear for Cycles,
I, JOHN PERRY, of 4, Barnsbury Park, Islington, London, N., Paperstainer, do
hereby declare the nature of my said invention to be as follows:-
The object of my invention is to provide a new or improved means for transmitting
power from the feet of the rider to the driving wheel or wheels whereby a more
powerful stroke is obtained than with the ordinary crank and consequently the
cycle is more easily driven and more speed obtained.
According to my invention I form the frame of the cycle with a vertical strut
about equidistant from the handle bar and saddle and provide bearings thereon
at the upper and lower ends thereof. The lower bearing carries an axle to which
are fixed three chain wheels, two on one side of the street and one the other.
The middle chain wheel is connected by the usual chain with the driving wheel
or wheels. The upper bearing of the strut carries an axle to which are fixed
2 chain wheels one on each side of the strut these chain wheels are connected
with the outer chain wheels at the lower end of the strut by means of two chains
cach of which is provided with a hanging stirrup or pedal suitably jointed or
connected thereto.
It will thus be seen that the upper ends of the stirrups or pedals travel round
with the chains whereby the full force is applied for a greater portion of the stroke
than is possible with the ordinary cranks."
1000
GEORGE DOWNING & SONS,
8, Quality Court, London, W.C., Agents.
Improvements in or relating to Driving Gear for Cycles.
I, JOHN PERRY, of 4, Barnsbury Park, Islington, London, N., Paperstainer, do
hereby declare the nature of my said 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 provide a new or improved means for
transmitting power from the feet of the rider to the driving wheel or wheels,
whereby a more prolonged and powerful stroke is obtained than with the ordinary
crank, and, consequently, the cycle is more easily propelled.
And in order that my said invention may be particularly described and ascer-
tained, reference is hereby made to the accompanying drawings in which similar
letters of reference indicate corresponding parts.

page_text: Fig. 1 is a side view and Fig. 2 is an end view of so much of my invention as is
necessary for particular description.
Figs. 3 and 4 are diagrammatical elevations illustrating the application of my
improved driving gear to a front driving and rear driving bicycle respectively.
According to my invention I dispense with the ordinary cranks and substitute
therefor the following device:-
I pivot a pair of pedals a to a pair of chains b arranged to travel over chain or
grooved wheels c at the top and around chain wheels d fast on the driving axle e,
the usual chain driving gear f or other multiplying gear being employed. By
these means the length of stroke is governed by the length of the chain; the
bearing of the upper wheels c is preferably adjustable as to its distance from the
other wheel d, in the case of Fig. 3 on a struth formed integral with the fork and in
the case of Fig. 4 on the diagonal member i of the frame or on a strut springing
from the crank bracket in a vertical direction and connected to the upper member
of the frame.
The stirrups or pedals may be of any desired shape and are pivoted to the chains
in any manner as experience may dictate, the essential feature of my invention
being communicating motion to the crank axle or other driving gear by means
of a pair of chains each of which are provided with a pedal or stirrup.
It will be understood that on pressure being applied to the pedals in the usual
way the pedals travel round with the chains, whereby the full force is applied for a
greater portion of the stroke than is possible with the ordinary cranks.
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:
In driving gear for cycles, the application and use of a pair of pedals or
stirrups pivoted to a pair of chains arranged to gear with or operate the ordinary
chain or multiplying gear of the driving wheel or wheels, arranged and operating,
substantially as hereinbefore described and illustrated by the drawings.
Tatad 741 .. 1900
GEORGE DOWNING & SONS,
8, Quality Court, London, W. C., Agents for the Applicant.