Improvements in and connected with Oycles or other Vehicles.
Year: 1895

page_text: Date of Application, 23rd Apr., 1895
7
Complete Specification Left, 22nd Jan., 1896-Accepted, 29th Feb., 1896.
Improvements in and connected with Oycles or other Vehicles.
I, GEORGE BAILLIE MAIN, of Orleans, Pollokshields, in the County of Renfrew,
North Britain, Oil Manufacturer and Refiner, do hereby declare the nature of this
invention to be as follows:-
:―
This invention relates to improvements in and connected with cycles or other
vehicles, and has for its object to minimise the friction caused in driving the chain
wheel of the cycle thus making it more easy to drive and to better distribate the
strain, and also to increase the lever power and obtain increased speed.
In carrying out the first part of my invention I carry the chain or pedal wheel
on ball bearings loosely on the spindle, and extend the lever to which the treadles
are connected to as near the circumference of the wheel as possible, and attach it to
two opposite points of the wheel, preferably as near the circumference as possible,
so that in place of revolving the wheel at the .centre it is revolved almost at the
circumference, thus giving greater lever power, and also taking the strain off the
centre of the wheel and axle and so better distributing the shearing strain.
It is also to be understood that the attachment as above described is applicable to
existing fixed wheels of cycles.
In carrying out the second part of my invention I provide an inner wheel of
somewhat less diameter than the chain wheel, and I form on the inner circumference
teeth. This inner wheel is driven by the lever which as already explained, is
extended to as near the circumference of the inner wheel as possible, and this inner
wheel engaging with the teeth of a pinion placed within the inner wheel, is carried
round with it, and this pinion being connected to another larger pinion carried
loosely on the same shaft, carries round and drives the larger pinion, and this in
turn engaging with the teeth formed on the inner circumference of the chain wheel,
communicates motion to the rear wheel of the cycle in the usual manner.
These wheels and pinions are also carried loosely on ball bearings.
In place of teeth any other gearing may be used.
Improvements in and connected with Oyoles or other Vehioles.
I, GEORGE BAILLIE MAIN, of Orleans, Pollokshields, in the County of Renfrew,
North Britain, Oil Manufacturer and Refiner, 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 :-
My invention relates to improvements in and connected with cycles and other
wheeled vehicles, and has for its object to minimise the friction caused in driving
the chain wheel of the cycle, thus making it more easy to drive, and to better
distribute the shearing strain and also to increase the lever power and obtain
increased speed.

page_text: In order that my invention may be properly understood and readily carried into
effect I have hereunto appended an explanatory sheet of drawing in the several
figures of which corresponding parts are marked with the same letters of
reference.
Figure 1. is a side clevation partly in section illustrating my improvements applied
to the chain wheel of a cycle.
Figure 2. is an end view of the same also partly in section, and Figure 3. is a
cross section of a detail illustrating one method of connecting the two cranks
together.
In carrying out my invention I provide an inner wheel A of somewhat less
diameter than the chain wheel B and which is in gear with it, and I form on the
inner circumference teeth a. This inner wheel A is driven by the lever or crank C
which is extended to as near the circumference of the inner wheel A as possible,
and is clamped to it by the bolts or studs c or other convenient manner, and this
inner wheel A engaging with the teeth of the pinion D placed within the inner wheel,
is carried round with it, and this pinion being connected to another larger pinion E
carried loosely on the same shaft F, which is preferably mounted on one of the
spokes of the chain wheel B, carries round and drives the larger pinion E, and this
in turn engaging with the teeth formed on the inner circumference of the said chain
wheel B, communicates motion to the rear wheel of the cycle in the usual manner.
To bring the left crank C1 into operation equally with the crank C I attach a
cross-pin to the spindle G to form a connection with wheel A as already described
with reference to the crank C in Figure 1.
These wheels and pinions may be also carried on ball bearings.
As an alternative method of bringing both cranks equally into operation with
one another I rigidly mount the cranks C and C 1 on the tubular sleeve H which
revolves with the movement of the said cranks. In this case the spindle G will be
stationary, when used, but it may be dispensed with altogether, if desired.
In place of teeth any other gearing may be used.
It is also to be understood that the extension of the treadle lever or crank Cand
the fixing it to the circumference of the chain wheel is applicable to existing
wheels of cycles with the object of reducing the shearing strain as already described
apart from the speed arrangement when it is not convenient to attach these..
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
1. In cycles and other wheeled vehicles, extending the cranks and fixing them to
as near the circumference of the chain or treadle wheel as possible substantially as
and for the purpose hereinbefore described and illustrated in the accompanying
sheet of drawings.
2. In cycles and other wheeled vehicles the arrangement and operation of the
geared wheels, substantially as and for the purpose hereinbefore described and
illustrated on the accompanying sheet of drawings.
3. In cycles and other wheeled vehicles, the arrangement for operating the chain
wheel with both cranks equally substantially as described and illustrated on the
accompanying sheet of drawings.
Dated this 20th day of January 1896.
41.
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Agents.