Improved Driving and Brake Mechanism for Velocipedes and other Vehicles.
Year: 1897

page_text: Date of Application, 16th July, 1897
Complete Specification Left, 16th Apr., 1898-Accepted, 9th July, 1898
PROVISIONAL
SPECIFICATION.
Improved Driving and Brake Mechanism for Velocipedes and other
Vehicles.
We, CHARLES SHACKLETON, trading as Charles Shackleton and Company, of
Chapel Lane, Keighley, in the County of York, Cycle Manufacturers and
Engineers, and JONAS HANSON, of Park Road, Bingley, in the County of York,
Weaving Manager, do hereby declare the nature of this invention to be as
follows that is to say -
The object of our invention is to produce driving mechanism for velocipedes
and other vehicles propelled by any motor mechanism, that will, on a reversal
of the direction of motion of the crank, become disengaged and at such
time allow the brake to be automatically applied, and this object we attain
by applying our disengaging and brake mechanism to the chain, sprocket or
like driving wheel secured to the shaft, spindle or wheel for driving the
vehicle.
The chain, sprocket or other driving wheel is mounted to revolve loosely on
the spindle of the velocipede's driving wheel and it is arranged to carry an
appropriately shaped pawl, ratchet or other device for engaging with a ratchet
or other wheel or clutch fixed upon the spindle of or to the velocipede's driving
wheel the said ratchet or engaging device being arranged so as to automatically
engage or couple the chain, sprocket or other wheel, with said ratchet or clutch
when the former is moving in one direction, while it will become disengaged in
moving in the opposite direction.
Secured to the ratchet or clutch mechanism, through which motion is imparted
to the velocipede's driving wheel, is a cylindrical flange or drum which may have
its surface straight or other shape in cross-section to receive a brake-strap of
corresponding shape.
This brake-strap is mounted to operate in connection therewith on a reversal
of the direction of motion of the vehicle's crank by being coupled thereto by
appropriate connecting rod, lever and other mechanism, so that the object herein-
before referred to is attained.

page_text: .
Improved Driving and Brake Mechanism for Velocipedes and other
Vehicles.
We, CHARLES SHACKLETON, trading as Charles Shackleton and Company, of
Chapel Lane, Keighley, in the County of York, Cycle Manufacturers and Engineers,
and JONAS HANSON, of Park Road, Bingley, in the County of York, Weaving Manager,
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 that is to say :-
The object of our invention is to produce driving mechanism for velocipedes
and other vehicles propelled by any motor mechanism that will, on a reversal of
the direction of motion of the crank, become disengaged and at such time allow
the brake to be automatically applied.
In the accompanying sheets of drawings we have illustrated our invention as
applied to the driving mechanism of a bicycle from which, and the following
description, it will be clearly seen how same may be used in connection with that
of other kinds of velocipedes and vehicles.
Fig. 1 is side elevation of a sufficient portion of a bicycle and its driving gear to
show the application thereto of our improved devices.
Fig. 2 is a similar view to Fig. 1 but illustrates an alternative arrangement as
hereinafter described.
Fig. 3 is also a similar view to Fig. 1 but drawn to an enlarged scale so as more
clearly to illustrate certain of the parts.
Fig. 4 is a view of the parts shown by Fig. 3 as seen from above.
We attain the object of our invention by applying our disengaging and brake
mechanism to the sprocket wheel a (or to the driving wheel in this position whether
same is a chain wheel as shown or a bevel driving wheel as used in many classes of
driving gear for velocipedes or those light vehicles propelled by oil or other
motor engines) usually secured to the vehicle's driving wheel, as that at b, or to its
hub c.
We now make this wheel a to revolve loosely on the hub c (or in case it has
heretofore been coupled to the wheel b through its spindle or axle then we make it
revolve loosely on said axle) while a ratchet wheel d is secured thereon in order
that the ratchets e e e pivotally mounted on said wheel « may engage with it
when it, said wheel a, revolves in one direction, and slide loosely over the
teeth in said wheel d when moving in the other direction, the springs e¹ el el
causing said ratchets e e e thus to act whatever position they may be in. From
this it will be seen that as motion is transmitted by the driving chain f to the
wheel a by means of the driving or crank wheel g and cranks and pedals h,
in the direction indicated by the arrow 2 the ratchets e e e will engage with the teeth
of the wheel d and so transmit motion to the vehicle's wheel b to cause it to
travel over the ground, while when moved in the opposite direction to that indicated
by said arrow 2 no action or force will be exercised over said wheel d consequently
it will only rotate by its own momentum.
Secured to the wheel d is an extra peripheral flange (shown as being straight
or flat in the drawings although for heavier vehicles we are well aware that it might
have a V or other shape of groove made in it) which is formed to receive a brake
strap m made to fit it. One end of said strap m being fixed to the framework n
at p while the other is connected to the lever q pivotted at q¹ and coupled by the.
rod to the lever 8, (which is pivotted at 82 to a projecting part formed on or
secured to the framework n), so that when this latter is pressed in the direction
indicated by the arrow 3 by the ratchett (pivotted at t¹ to an arm of the wheel g

page_text: upon which it is held in a normal position against the pin 13 by the spring 12, the
pin t preventing excess of motion in the direction against said spring, said pins t³
and being shown in broken lines Figs. 1 and 2, so that the ratchet t is carried
by said wheel through its circular path of motion) coming into contact with the
projection s¹ on said lever s, this latter forces the rod r to pull the lever q and cause
the strap m to grip its flanges ke thus braking the wheel as desired, and since these
actions are effected by the ratchet t moving in the direction indicated by the arrow 3
(and not when moving in the other direction) it will be seen that since said ratchet t
is carried by the wheel g, it is only thus brought into action when said wheel g is
moving in a direction that will not allow it to transmit motion to the wheel das
above described, consequently the actions of the brake can only be brought into
use when it is most desirable that they should be employed.
Instead of the levers q and s and rod r one lever was shown by Fig. 2 may be
employed by being pivotted at w' and made to extend into position for the ratchet t
to act upon it, in the same manner that such ratchet acts upon the lever & above
described, producing similar results as regards the actions of the brake strap m,
which in this latter case is fixed by the pin n¹ to the framework n so that said
lever may act upon it; causing it to grip the flange k as desired.
From the foregoing description it will be seen that although the mechanisms are
described in connection with the common chain-wheel-driving-gear of a bicycle, yet
by securing the several parts thereof to those on any vehicle which correspond with
the actions of the wheels a b and g the same results will be effected.
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. Driving and brake mechanism for velocipedes, and like vehicles, the same
being constructed and arranged to operate substantially as specified.
2. In connection with the driving gear of a velocipede, brake mechanism, the
same being arranged so that it may be brought into action by a reversal of the
pedal driving devices substantially as herein specified.
C. SHACKLETON.
J. HANSON.
Per Samuel Hey,
Agent.