Improvements in Driving Gear for Application to Cycles and other Machinery.
Year: 1892

page_text: Date of Application, 13th Dec., 1892
Complete Specification Left, 11th Sept., 1893-Accepted, 14th Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in Driving Gear for Application to Cycles and other
Machinery.
ARTHUR JOSEPH SIMPSON of Crabbs Cross Redditch in the County of
Worcester Manufacturer and THE IXION COMPANY LIMITED a Company incor-
porated under the Company's Acts whose registered office is at the same place
do hereby declare the nature of this invention to be as follows:-
The invention consists of an improved multiplying gear by means of cogs for
driving bicycles and other machines.
To describe the invention its application to the front wheel of a bicycle is.
selected.
The wheel to which the gear is applied runs freely on a revolving spindle to which
the pedal cranks are attached. To the end of one of the forks in which the wheel
is hung a toothed or cog wheel is fixed. This cog is stationary but is centric with
the cycle wheel and the spindle or axle thereof. On the side of the hub of the
cycle wheel and adjacent to this fork another cog wheel is fixed (or may be made
in one piece with the bub). Between these two cogs a or other suitably shaped
crank or lever is fastened to or made in one piece with the spindle and at the
extremity of one (or the first) arm which I by preference have made shorter than
the other (or second) arm of this crank or lever a small cog is placed in such a
manner that it will engage with the cog attached to the hub of the wheel, and to
the second arm are attached two cogs working in unison on a loose spindle in such a
manner that one engages with the cog on the fork and the other with the cog on
the first arm of the crank or lever. The cogs on this crank or lever are preferably
of the same size. The axle of the cog on the first arm slides in a slot with a screw
adjustment and enables the wear of the gear wheels to be taken up. The inventor
does not confine the adjustment to this arm only but may apply it to the other arm
if more satisfactory.
The pedal cranks being set in motion move the spindle and with it the crank or
lever attached thereto which causes one of the cogs on the second arm to revolve
around the fixed cog attached to the fork. This rotary motion around the
stationary cog causes the small cog itself to revolve as also the cog working in
unison with it and this latter sets the cog on the first arm in motion which in its turn
imparts motion to the cog in the hub of the wheel.
The variation in the size of the cogs and the revolving of the cogs attached to the
crank or lever around the cogs on the fork, and hub of the wheel, gives to the
mechanism the requisite multiplication of gearing.
Dated this 12th day of December 1892.
ARTHUR JOSEPH SIMPSON.
For THE IXION IRON CO., LIMITED,
Jno. R. Craner, Secretary.

page_text: CUNT DETE SPECIFICATION.
Improvements in Driving Gear for Application to Cycles and other
Machinery.
We ARTHUR JOSEPH SIMPSON of Crabbs Cross in the County of Worcester
Manufacturer and THE IXION COMPANY LIMITED a Company incorporated under
the Companies' Acts whose registered office is at Crabbs Cross in the County of
Worcester 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 invention consists of an improved multiplying gear by means of cogs for
driving cycles and other machines.
To describe the invention its application to the front wheel of a bicycle is
selected.
The wheel to which the gear is applied runs freely upon a revolving spindle to
which the pedal cranks are attached.
U
To the end of one of the forks in which the wheel is hung a toothed or cog
wheel is keyed or otherwise fastened this cog is stationary but is centric with
the cycle wheel and the spindle or axle of this wheel passes through the centre of
this stationary cog. On the side of the hub of the cycle wheel and adjacent to this
fork another cog wheel is fixed (or may be made in one piece with the hub).
Between these two cogs a triangular or other suitably shaped lever or crank is
fastened at its apex to or made in one piece with the spindle and in one angle at
the base of this triangular crank or lever a small cog is placed in such a manner that it
will engage with the stationary cog on the fork above described and in the other
angle at the base of the crank or lever two small cogs are placed one on the front
and the other at the back thereof both keyed on one spindle and working in unison
in such a manner that the one on the front engages with the cog in the other angle
at the base of the crank or lever and the one at the back engages with the cog
attached to the hub of the wheel before mentioned. The cogs on this crank or
lever are preferably of the same size and all run on ball bearings.
The spindle on which the wheel runs also works on balls contained in the fork
ends and is adjustable laterally.
The axle of the small cog on the lever which engages with the fixed cog attached
to the fork slides in a slot with a screw or other suitable and well known means of
adjustment and enables the wear of the gear wheels to be taken up.
The pedal cranks being set in motion move the spindle on which the wheel runs
and with it the aforesaid crank or lever attached thereto which causes the single
cog in one angle at the base of the lever to be drawn around the fixed cog on the
fork end. This rotary motion around the stationary cog on the fork causes the
aforesaid single cog on the lever to revolve and this sets in motion the other two
cogs on the crank or lever the one on the front and the other on the back and the
last mentioned imparts motion to the cog attached to the hub.
The variation in the size of the cogs and the revolving of the cogs attached to
the crank or lever around the cogs on the fork and hub of the wheel give to the
mechanism the requisite multiplication of gearing.
In the accompanying drawings
Fig 1 shows the front elevation and Fig. 2 the reverse. Fig. 3 is a side view of
Fig. 1 and Fig. 4 is a side view of Fig. 2.
A in Figures 1, and 4 is the stationary toothed or cog wheel keyed or other-
wise fastened to the fork. B in Figures 1, 2, 3, and 4 is the cog wheel attached to
the hub of the wheel, C in the same figures is the triangular crank or lever. D in
Figures 1, 2, and 4 is the small cog which engages with the stationary cog A.
E in Figures and 3 is the small cog on the front of the lever C which engages
with D. Fin Figures 2, 3 and 4 is the small cog wheel on the back of the lever C

page_text: working in unison with E and engaging with the cog wheel B. G in Figure 2
shows the slot in which the cog D slides by means of the screw H in the same
figure and also in Fig. 4 for adjusting and taking up wear in the cogs. I in Fig. 2
is the loose spindle to which the crank K in Figs. 1, 3 and 4 is attached and L in
Figs. 1, 3 and 4 is the screw with which the bearings on the fork end above
mentioned are adjusted.
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 :-
1. The peculiar manner in which the gear wheels are arranged and work into
each other and transmit and multiply force from the pedal crank to the cycle wheel
as previously explained.
2. That the pedal cranks are centric with the wheel and side wrenching and
displacement liable to gears not so arranged is obviated and also lateral adjustment
is enabled to be arranged.
3. That by means of the slot and screw adjustment before mentioned the wear in
the gear wheels can be taken up and the tendency to back lash greatly minimised.
Dated the Ninth day of September 1893.
ARTHUR J. SIMPSON.
The common seal of The Ixion Company, Limited, was hereunto affixed
in the presence of
J. H. JOSCELYNE, Liquidator.