in crank
Year: 1898

page_text: Date of Application, din dept., 1898
Complete Specification Left, 6th June, 1899-Accepted, 8th July, 1899
We, JOHN HENRY QUENAULT and WILLIAM POVALL, Stone Masons, both of 16,
Poulton Street, Liverpool, South, do hereby declare the nature of this invention
to be as follows:-
This invention for improvements in cycle cranks has for its object an improved
construction whereby the power of the foot upon the pedals is transmitted to
the axle in a more regular and even manner, without jerks, and consists essen-
tially in constructing it wholly or partially of spring metal so that it is enabled
to give slightly under the pressure of the rider's foot.
In carrying this invention into practical effect the crank is formed from a
bar of metal formed at one end for attachment to the pedal axle and coiled round
for a short distance and then formed straight for the remainder of its length,
its outer end being adapted to receive the pedal.
It will, therefore, be seen that the crank is enabled to give slightly under
the pressure of the rider's foot and therefore to transmit the power to the pedal
axle without jerks while it is of sufficient size to give the necessary stiffness and
strength for driving.
We, JOHN HENRY QUENAULT. and WILLIAM POVALL, Stone Masons, both of 16,
Poulton Street, Liverpool, South, 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 ;-
This invention relates to an improved construction of cycle cranks whereby the
Pssure of the foot upon the pedals is transmitted to the axle in a regular and
even manner, the crank being constructed so as to give resiliently when the
pressure is applied.
The
The crank is formed from a bar of spring metal and coiled at the end attached
to the spindle, the crank being formed otherwise in the usual manner.
crank formed in this way will give slightly under the pressure of the rider's foot
and therefore transmit the power to the crank spindle without jerking.
In order that this invention may be more clearly understood reference is
TD 027

page_text: had to the accompanying drawing which shows a crank constructed according to
our invention.
As shown the crank is formed with the straight portion A the end of which is
formed in the usual manner to receive the pedal spindle. The part B of the
crank is of coiled form as shown, the coil extending for about three quarters of
a circle around the crank spindle C.
The crank is formed with the boss D at the end of the coiled part allowing it
to be attached to the spindle. The crank may be fitted to the spindle by the
cottar pin d having the nut dat one end. Any other well known means may
be employed to secure the crank in position.
The crank constructed as shown is sufficiently resilient to prevent the pres-
sure being transmitted in a jerky manner to the spindle as the coiled portion
allows the crank to give in the manner of a spring. At the same time the crank
is as strong as one of the ordinary form and owing to its resiliency is less likely
to break from a sudden strain.
our said
Having now particularly described and ascertained the nature of
invention and in what manner the same is to be performed, we declare that what
we claim is:-
An improved driving crank for cycles having the end next to the crank spindle
of coiled form rendering the crank resilient, substantially as described and shown
and for the purposes specified.
1000
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicants.
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicants.