Pedal Attachment to Cranks for Velocipedes.
Year: 1897

page_text: Date of Application, 3rd Dec., 1897
Complete Specification Left, 2nd Sept., 1898 -Accepted, 3rd Dec., 1898
Pedal Attachment to Cranks for Velocipedes.
NATILAN KARMEL, 28, Goldswong Terrace, Cranmer Street, Nottingham, Cycle
Manufacturer, and WILLIAM BLANCHARD, 21, Meredith Street, Saint Anns Well
Road, Nottingham, Mechanic, do hereby declare the nature of this invention to
be as follows:
The invention relates to the construction of means by which a pedal may be
fixed to a crank firmly in a neat and effectual manner, at the same time being
detachable, and flush with the back of crauk to allow a narrow tread.
The arrangement consists of the pedal pin being made to pass through the back
of the crank, a shoulder or head being left on the back end of the pedal pin fitting
into a countersunk recess in the back of the crank.
From the shoulder or head, the pedal pin is then made to fit the remaining part
of the hole in the crank, either by a right, or left screw or thread, or by round,
square, oval, oblong or any other shape pegged or otherwise, a lock nut is then
screwed up close to the front of the crank, so as to clamp or hold the pedal pin
firmly in its position.
In fitting the pedal pin by having the part next to the shoulder or head screwed
into the crank in the manner before described, the back cone of tho pedal (that is,
the cone next to the crank) may preferably be used as a lock nut.
This may be done by having the thread of the screw which fits into the crank
from the shoulder, or head of the pedal pin, cut either lefthanded or righthanded,
and the thread of the screw which fits into the lock nut or cone being cut the
opposite to the screw which fits into the crank, that is either righthanded or left-
handed, and the two threads on the same pedal pin being made the reverse to each
other, the pedal pin becomes locked in the crank, and cannot possibly become loose
or unfastened unless a key or spauner is used for the purpose of detaching the
pedal pin from the crank."
The right hand crank of the velocipede may be screw cut the reverse way to
the left hand crank and the pedal pins cut corresponding to fit them, by which
means the action of pedalling would not have any tendancy to unloosen them.
Dated this Second day of December 1897.

page_text: Meredith Street, Saint Anns Well Road, Nottingham, Mechanic, do hereby de-
clare 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 relates to the construction of means by which a pedal may be
firmly fastened in a crank in a neat and effectual manner, and at the same time
being detachable, and flush with the back of crank to allow a narrow tread.
The arrangement consists of the pedal-pin being made to pass through from the
back of the crank, a shoulder or head being left on the back end of the pedal pin
at Eig. 3 fitting into a counter-suuk recess in the back of crank at C Fig. 2.
From the shoulder or head (E Fig. 3) the pedal pin is then made to fit the
remaining part of the hole in the crank at D Fig. 2, either by right or left hand
screw or thread (Fig. 3, or by round, oval square, oblong, or pegged, a lock nut
is then screwed up close to the front of the crank to clamp or hold the pedal pin
firmly in its position.
In fitting the pedal pin by having the part next the shoulder or head (E Fig. 3)
screwed into the crank in the manner before described, the back cone of tho
pedal (H Fig. 4) that is the cone next to the crank, may be preferably used as a
lock nut.
This may be done by having the thread of the screw which fits into the crank
at (Fig. 3) cut either left handed or right handed, and the thread of the
BCrew ( Fig. 3) which fits into the locknut or cone (H Fig. 4) being cut the
opposite to the screw which fits into the crank, that is either right or left handed,
and the two threads on the same pedal pin (F and G Fig. 3) being made the
reverse to each other, the pedal pin becomes locked in the crank, and cannot
possibly become loose, unless a key or spanner is used to unfasten or detach the
same.
The right hand pedal pin may be preferably screw cut the reverse to the left
hand pedal pin, and the threads in cranks cut to correspond them, by which means
the action of pedalling has no tendancy to unloosen them but rather to keep them
safe and secure.
Having now particularly described and ascertained the nature of our invention,
and in what manner the same is to be performed, we declare that what we claim
is:-
1
1st. A safe and secure pedal attachment the pedal pin being interlocked securely
into the crank.
2nd. A tough pedal pin, not being made brittle with case hardening, the loose
cone in our invention renders this unnecessary.
3rd. Neatness and finish, no split ends of cranks, or nuts protruding, but a
perfectly Hush surface on back of crank as in Fig. 5, which allows also a narrow
tread.
Dated this lat day of September
1000
5500
NATHAN KARMEL.
28, Goldswong Terrace.
WILLIAM BLANCHARD.
39, Duncombe Street.