Improvements in the Method of Gearing for Driving Bicycles or Tricycles.
Year: 1891

page_text: Date of Application, 29th Dec., 1891
Complete Specification Left, 9th May, 1892-Accepted, 18th June, 1892
PROVISIONAL SPECIFICATION.
Improvements in the Method of Gearing for Driving Bicycles
or Tricycles.
1, EDWIN JACKSON of Knowsley Park, Prescot, Lancashire, Saw Mill Foreman
do hereby declare the nature of my invention for IMPROVEMENTS IN THE METHOD
OF GEARING FOR DRIVING BICYCLES OR TRICYCLES to be as follows:-
In the hub of driving wheel, I form partition, about centre of hub, to which I fix
small bevil gear wheel, with long boss, formed to take ball bearings, to work round
driving shaft. To inside of fork carrying driving wheel, I fix another bevil gear
wheel the same diameter, as the one fixed on partition in hub of driving wheel, with
boss bored for driving shaft, and arranged to receive ball bearings, to work round,
aforesaid driving shaft.
I form driving shaft to go through centre of hub, of suitable length to go to
the outside of fork, carrying driving wheel, and receive the pedals of the usual
form, which I fix, one on each end of driving shaft. On one side of shaft I form lug,
or boss, at the required distance, in which I fix screwed stud, on which I mount
bevil geared, pinion driving wheel, to turn freely, round the stud, on ball bearings,
under head of screwed stud. This bevil geared driving pinion wheel, gearing into
bevil gear wheel fixed on fork of machine, and the bevil gear wheel fixed on
partition in hub of wheel.
When the driving shaft is turned round by the action of the pedals it carries the
pinion driving wheel, along with it, and this pinion driving wheel, being in gear with
the wheel fixed on the fork on the one side, and the gear wheel fixed on partition of
the hub on the other side causes the bevil gear driving pinion wheel, to turn round on
its own axis, thereby carrying the wheel of bicycle or tricycle round at twice the
speed of driving shaft.
By altering the relative proportions of bevil gear wheel fixed on fork of machine
and the one fixed on partition of hub, the wheel can be made to travel at the speed
most desired.
By this arrangement I do away with the chain gear and wheels, which are now
in general use, and gain the speed desired, by one driving bevil geared pinion or
mitre wheel, having motion round its own axis, as before described.
59 11
Dambar 1801
COMPLETE SPECIFICATION.
Improvements in the Method of Gearing for Driving Bicycles
or Tricycles.
I EDWIN JACKSON, of Knowsley Park, Prescot, Lancashire, Saw Mill Foreman,
do hereby declare the nature of my invention for IMPROVEMENTS IN THE
OR TRICYCLES and in what
METHOD OF GEARING FOR DRIVING BICYCLES
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
Herewith I give 1 sheet of drawings Figs. 1. 2. 3 and 4.
Fig. 1 is a longitudinal section through hub of driving wheel, shewing method of

page_text: Fig. 3 is an end view, of hub and bracket fitted to suit end of fork of driving
wheel.
Fig. 4 is plan of end of bracket to receive fork.
The same letters apply to the different views of the same parts.
A is casing or hub, formed by preference, of drawn steel tubing. A' is partition
fixed to casing A and bored, to receive boss of bevil gear wheel B which is fixed
to partition A¹ and prepared to receive balls B². Ċ is bracket fixed to end of
fork, with cups formed to receive balls B2 and C¹ is bracket, fixed to the other
portion of fork, with long boss on one side C³ to which is fixed bevil gear wheel D.
On the other side of bracket C is formed cup C4 to receive balls C³.
E is driving shaft, on which is formed, lug or boss E¹ to receive screwed
stud E².
F is bevil gear wheel, bored, and counter sunk, to fit, and freely turn on
stud E.
G is cup formed to receive balls C³.
His cup, formed to screw, and receive balls C².
His check nut screwed to adjust bearings.
I are portion of pedals, of the ordinary form, fixed on driving shaft E. The
driving shaft E formed with cone at E³ fitting into bevil gear wheel B. J is cap,
fitted to hub A for access to screwed stud E2 to adjust wheel F, and take up wear.
Lis cap fitted tightly in end of hub, to exclude dust.
K is cap fixed to back of wheel D and sufficient clearance allowed, that hub A
may turn freely around it.
Having now described the various parts as shewn, I will now explain, how the
same may be put together.
Assuming the wheels to be truly cut, and the various parts truly turned, and
fitted, I take hub A insert spokes in the usual way on dotted lines as shewn at M.
and connect to rim in the usual manner. I then take driving shaft E mount bevil
gear wheel F by screwed stud E2 allowing wheel F to turn freely.
I then insert driving shaft E through hole, bored in wheel B until wheel F is
fully and properly in gear with wheel B. I then fix wheel D on C³ with cap K at
the back.
I then take bracket C¹ mounted as before described, and slide the same on
shaft E until wheel D is fully in gear with wheel F.
I then take cup G which I fix near end of driving shaft E close up to balls C³.
I then fix pedal I in the usual manner.
I then take bracket C and in the cup insert balls B3 sliding the bracket C
on driving shaft up to its bearing on boss B.
I then insert balls in cup at C2 and screw up cup H to the balls. I then
up check nut H' and adjust to bearings, and fix pedal I firmly to driving shaft.
The driving wheel is now fully mounted ready for fixing to fork.
The bracket C and C' having been previously fitted to end of fork, I now bolt the
same, or fix in any other manner thought most desirable.
The gearing can be adopted for wheel, or wheels of tricycle in the same manner.
The mode of operation is as follows when the pedals I are driven in the usual
manner. The driving shaft E, carries driving wheel F round the axis of driving
shaft E and being in gear with fixed wheel D on the one hand, and the wheel B on
the other hand, causes the driving wheel F to turn round the stud E2 and carry the
hub A along with it, at an increased speed, which is double, should any other speed
be desirable, the same can be made to turn faster or slower, by altering the relative
diameters of wheels B and D.
By this arrangement I dispense with chain, and chain wheels, and drive, direct,
from hub of driving wheel, and gain increased speed without complication of
gearing.
Having now particularly described and ascertained the nature of my inven
tion, and in what manner the same is to be performed, I wish it to be understood

page_text: that I do not confine myself to the exact arrangement as herein set forth, nor do I
claim the principle as new, I declare that what I claim is
The use of bevil gear wheels or their equivalent, in combination, substantially as
herein described and set forth, gaining increased speed, by the action of driving
5 wheel, being in gear with fixed wheel on bracket and wheel fixed or connected to
hub of bicycle, or tricycle driving wheels.
Dhin 6th day of ML 1802
EDWIN JACKSON.