Improved Means for Changing or Varying the Speed of Cycle Gearing.
Year: 1894

page_text: Date of Application, 7th Mar., 1894
. Complete Specification Left, 1st Dec., 1894 Accepted, 12th Jan., 1895
PROVISIONAL SPECIFICATION.
Improved Means for Changing or Varying the Speed of Cycle
Gearing.
I WILLIAM PETTINGER WEST WEATHERILL of 33 Beech Street Waterloo
Road Cheetham Manchester in the County of Lancaster Coach Body Maker do
hereby declare the nature of this invention to be as follows:-
I make a bracket chain wheel in part or parts such chain wheel to be used as a
reversible wheel having two or more rows of teeth round the wheel rim or rims
each row may have a different number of teeth; having made the hole in the centre
of the wheel I then form recessed part or parts on each side of the wheel or wheel
boss or make or form projections each side of the wheel or wheel boss I then form
suitable recesses or projections on the crank boss or a suitable part of the crank
to engage with the recesses and projections on the wheel or wheel boss and make
suitable recesses or projections on or in a shoulder or enlarged part on the crank
shaft or in or on the side of a collar made with or without a sleeve to attach and
be suitably secured to the crank shaft the recesses and projections being by
preference of an adjustable nature to adjust themselves into proper position.
I make a slot hole or notch near the end of the bracket shaft of a suitable shape
and such slot hole or notch being long enough so that when the wheel and crank
are placed on the shaft a taper pin is driven into a hole or slot in the crank boss
such pin catches the outer end of the slot hole or notch and laterally forces the
crank and wheel together up to the shoulder or collar on the bracket shaft and all
interlocking with their recesses and projections are firmly held together.
I may make the bracket chain wheel whether it has one row of teeth or more
than one row of teeth to screw or slide on the bracket shaft such wheel may be
adjusted laterally so as to enable the chain to engage with a suitable row of teeth
upon it or on the driving wheel of a bicycle or the chain wheel on the axle or axle
sleeve of a cycle with more than two wheels. The chain wheel on the axle or axle
sleeve may also have a lateral adjustment.
I may form two or more rows of teeth on the chain wheel made with or attached
in part or parts to the driving wheel of a bicycle or the axle or axle sleeve of a
cycle having more than two wheels. When it is desired to change the gear
I reverse the bracket wheel and place the chain or the row on rows of teeth (suitable
to the gear I want) on the bracket chain wheel and the chain wheel on the driving
wheel of a bicycle or on the chain wheel on the axle or axle sleeve of a cycle
having more than two wheels. Or I may reverse the chain wheel which is on the
driving wheel of a bicycle or on the axle or axle sleeve of a cycle having more
than two wheels for a similar purpose. Or I may use a bracket wheel with a
single row of teeth with the boss so formed or placed that when the wheel is
reversed the chain will come in line with a suitable row of teeth on the chain
wheel on the driving wheel. Or I may form a bracket wheel in part or parts by
making the teeth part or parts reversible attaching such part or parts to the boss
or other part or parts of the wheel.
Or I may use a chain wheel with a single row of teeth and boss as before
explained on the driving wheel of a bicycle or the axle or axle sleeve of a
cycle having more than two wheels so that when the chain wheel is reversed
it will bring the chain in line with a suitable row of teeth on the bracket wheel.

page_text: Or I may simply use an ordinary chain wheel with one row of teeth on the
driving wheel or axle or axle sleeve and change the gear by reversing the
bracket chain wheel with its two or more rows of teeth round its rim or rims.
Or I may change the gear by taking off one ordinary bracket chain wheel
and replacing it with another having, a different number of teeth and securing
it to the shaft by the interlocking adjustable and securing parts before named.
Although I give above the methods I prefer for securing the reversible chain
wheel or wheels I may sometimes secure it or them by any of the present known
methods in use.
Dated the Sixth day of March One thousand eight hundred and ninety-four..
Improved Means for Changing or Varying the Speed of Cycle
Gearing.
1 WILLIAM PETTINGER WEST WEATHERILL of 33 Beech Street Waterloo
Road Cheetham Manchester in the County of Lancaster Coach Body Maker 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-
I make a bracket chain wheel in part or parts such chain wheel to be used as
a reversible wheel having two or more rows of teeth round the wheel rim or
ims each row may have a different number of teeth, having made the hole in
the centre of the wheel I then form recessed part or parts on each side of the
wheel or wheel boss or make or form projections each side of the wheel or
wheel boss, I then form suitable recesses or projections on the crank boss or a
suitable part of the crank to engage with the recesses and projections on the wheel
or wheel boss and make suitable recesses and projections on or in a shoulder or
enlarged part on the crank shaft or in or on the side of a collar made with
or without a sleeve to attach and be suitably secured to the crank shaft. The
recesses and projections being by preference of an adjustable nature to adjust
ihemselves into proper position.
I make a slot hole or notch near the end of the bracket shaft of a suitable shape
nd such slot hole or notch being long enough so that when the wheel and crank
are placed on the shaft a taper pin is driven into a hole or slot in the crank boss
such pin catches the outer end of the slot hole or notch and laterally forces the
crank and wheel together up to the shoulder or collar on the bracket shaft and all
interlocking with their recesses and projections are firmly held together.
I may make the bracket chain wheel whether it has one row of teeth or more
than one row of teeth to screw or slide on the bracket shaft such wheel may be
adjusted laterally so as to enable the chain to engage with a suitable row of teeth
upon it or on the driving wheel of a bicycle or the chain wheel on the axle or axle
sleeve of a cycle with, more than two wheels the chain wheel on the axle or axle
sleeve may also have a lateral adjustment.
I may form two or more rows of teeth on the chain wheel made with or attached
in part or parts to the driving wheel of a bicycle or the axle or axle sleeve of a
cycle having more than two wheels. When it is desired to change the gear 1
reverse the bracket wheel and place the chain on the row or rows of teeth (suitable
to the gear I want) on the bracket chain wheel and the chain wheel on the driving
wheel of bicycle or on the chain wheel on the axle or axle sleeve of a cycle having
more than two wheels for a similar purpose.
Or I may use a bracket wheel with a single row of teeth with the boss so formed

page_text: or placed that when the wheel is reversed the chain will come in line with a
suitable row of teeth on the chain wheel on the driving wheel or I may form a
bracket wheel in part or parts by making the teeth part or parts reversible
attaching such part or parts to the boss or other part or parts of the wheel.
Or I may use a chain wheel with a single row of teeth and boss as before
explained on the driving wheel of a bicycle or the axle or axle sleeve of a cycle
having more than two wheels so that when the chain wheel is reversed it will bring
the chain in line with a suitable row of teeth on the bracket wheel. Or I may use
a chain wheel with one row of teeth on the driving wheel or axle or axle sleeve
and change the gear by reversing the bracket chain wheel with its two or more
rows of teeth round its rim or rims.
Although I give the above methods I prefer for securing the reversible chain
wheel or wheels I may sometimes secure it or them by any of the present known
methods in use.
In order that the invention may be better understood and explained in detail
I have hereunto attached a sheet of drawings. The drawings are not to scale as
the parts are used in various sizes.
Fig. 1 is the crank. Fig. 2 is a sectional view and shows the crank shaft with a
chain wheel attached with a double rim or two rows of teeth and when this chain
wheel is used in combination with the chain wheel with a double row of teeth on
the hub of the driving wheel as shown in Fig. 3 it will be understood by removing
the chain from one line of wheels to the other a change of speed is obtained which
gives the rider choice of two speeds and by reversing either the chain wheel on the
crank shaft or the one on the hub two more speeds are obtained thus the rider has
always four speeds with him. The slots in the hind fork being made long enough
to enable the driving wheel to be moved to proper position to suit the varying
length of chain.
Letter a in Fig. 2 is the crank shaft is the collar or cone on the shaft showing
how it may be notched into the boss of the chain wheel c shows the notch on the
shaft and c also shows room in the drift pin hole in the crank so that when the
drift pin d is driven home it presses against the shoulder formed on the crank
shaft and against the opposite side of the hole in the crank and thus laterally
adjusts and secures the crank and wheel to the crank shaft and collar or cone.
Fig. 3 shows a chain wheel with a double row of teeth on the hub of a driving
wheel and may be reversed as already explained when a change of speed is
required.
Fig. 4 shows a bracket or chain wheel with the position of the rim and teeth so
arranged with the boss that when reversed it will engage with a different row of
teeth on the chain wheel on the hub of the driving wheel as shown in Fig. 3 this
arrangement will give the rider the choice of two speeds.
Fig. 5 answers same purpose as Fig. 4.
Fig. 6 shows how a tooth rim may be attached to stump spokes or a small wheel
or disk when it is desired to change speed by reversing the rim to the other side of
the stump spokes or smaller wheel or disk.
Having now described the nature of this invention together with the method of
carrying the same into practical effect I wish it to be understood that I claim,-
The means of changing or varying the speed of cycle gearing by reversing a
chain wheel or wheels or parts or reversing their position on the parts prepared for
them in combination with bicycles or other cycles substantially as hereinbefore
described, set forth, and fully illustrated in the drawings attached.
Dated this Thirtieth day of November 1894.
W. P. W. WEATHERILL.