A new cycle pedal
Year: 1897

page_text: Date of Application, 20th Mar., 1897-Accepted, 31st July, 1897
I, SIMON PIERRE FRANÇOIS LEHMKUHL, of 122 Malakkastraat, The Hague, in the
Kingdom of The Netherlands, Engineer, do hereby declare the nature of my invention
for "A new cycle pedal," 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 a new cycle pedal and the nature of this pedal is that it is
fastened to the crank by means of balls. There are several manners to perform this
principle; two of these manners are shown by Fig. 1 and Fig. 2 and Fig. 3 of the
drawing of this specification.
The constructions are made dust proof.
To give a further description of my invention serves the following:
My invention relates to a new cycle pedal and the main thing thereof is that his
form is flat and that there is only one ball-bearing placed into the eye of the crank or
immediately near the crank, this ball-bearing consisting of two rings, fastened
together by means of balls, and of which one ring is fixed to the crank, the other to
the pedal. As the pedal is flat, it is the right place for a trade mark or a beautiful
figure.
In Sheet 1 Fig. 1 is shown a side elevation of the ball bearing, in Fig. 2 and Fig. 3
are shown vertical sections of the same. At the outside of the ring b is made a ball
race and at the inside of the ring a is made also a ball race and the balls between these
rings hold the rings together but do not prevent them from turning round each other.
Of the ring a is cut off the part d in order to place the balls between the rings and
the balls being placed, the part d or another part is replaced and soldered to the
ring a.
In Sheet I Fig. 1 and Fig. 2 is used such a ball bearing but the ring a is here
substituted by the eye of the crank, (Fig. I is a vertical section, Fig. 2 a section
on M N of Fig. 1). Thus at the inside of the eye of the crank c is made a ball race
and at the outside of the ring b is made also a ball race and the balls hold the ring b
and the crank together. To the ring b is fastened the pedal P by means of the
screw S. The filling part q namely which is half a cylinder, is fixed to the ring b and
this filling part and half the cylinder of the pedal have the same screwthread at the
inside. The screw S holds them together.
The pedal is
Nevertheless I say in my
r are the rubbers of the pedal fixed thereto by means of little screws.
here fixed to the ring 6 by means of the screw S.

page_text: specification and in the claim that the pedal is fastened to the crank by means of
balls. This must be so understand that all parts fixed to one ring and also this ring
appertain to the pedal and all parts fixed to the other ring appertain to the crank,
then it can be said that the pedal is fixed by means of balls to the crank.
In Sheet I Fig. 3 and Sheet I Fig. 4 are shown sections of another of the several
manners of which I have written in my specification. To the ring 6 are fixed the
parts h and between these parts h the pedal is held and secured by means of the nut f.
e are ring formed plates which make the bearing dust-proof.
To the
In Sheet I Fig. 5 is shown a section of another of the several manners.
ring b is fixed the pedal P with the rubbers and to the ring a is fixed the plate e
which makes the construction dustproof. At the outside of the ring a and the plate e
is made a screwthread and the plate with the ring a and the bearing and pedal is
screwed into the eye of the crank by means of a screw driver.
In Fig. 6 is shown the eye of the crank, in Fig. 7 the pedal with ring a, in which
is situated the ring b with the balls. e is a ring formed plate making the bearing
dustproof.
In Fig. 8 is shown a plan of this pedal. c is the crank, e a ring formed plate, P the
pedal, and are the rubbers.
In Fig. 9 is shown a pedal P and crank c of which the bearing is situated
immediately near the eye of the crank c; r is one of the rubbers placed between the
plates t.
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:
A cycle pedal which is fastened to the crank by means of balls.