Year: 1897

page_text: A communication from LA SOCIÉTÉ A DARRACQ AND COMPANY, of Pré Saint Gervais, in
the Republic of France.
I, ALFRED JULIUS BOULT, of 111, Hatton Garden, in the County of Middlesex,
Chartered Patent Agent, do hereby declare the nature of this invention to be as
follows:-
:-
The object of this invention is an improved pedal for cycles, the construction of
which will be easily understood from the following description.
In the pedal according to the present invention the sleeve or casing through which
the spindle passes the end of which screwed into the crank-is provided at each
end with stays on to which is fitted the frame forming the support for the foot.
The ends of the casing form the inner cups for the balls on which the spindle is
supported. The outer end of the spindle is provided with a head between which and
the bottom of the outer cup on the casing are placed the balls forming the ball
bearing at the outer end. At the other end the balls are arranged between the inner
cup on the casing and a corresponding groove of an adjustinent cone which may be
screwed forward or backward on the screw threaded portion of the spindle, so that both
ball bearings can be regulated by the adjustment of the cone.
The other screw threaded portion of the spindle which is screwed into the crank
is provided with two symmetrical parallel flat sides and on this part of the spindle is
fitted so as to be capable of sliding freely a ring or washer provided preferably on its
outer circumference with two parallel flat sides for the purpose of enabling the ring
to be grasped by a spanner and said ring together with the spindle to be turned
so as to screw the spindle tightly into the crank.
The flat portions of the spindle of a larger diameter than that of the remaining part
begin at the enlarged part and end just before the end of the crank end of the spindle
so that when the pedal is fitted up but not yet fixed in the crank the ring cannot fall
off and be lost.
This
The outer stay of the frame is provided with a central cap covering and completely
enclosing the bearing. Said cap is provided in its centre with a hole closed by a plug
carried on the end of a spring blade fixed on the inner side of the cap.
plug fulfils two functions; firstly it closes under the influence of the spring the hole
of the cap through which the bearing is lubricated; and secondly it facilitates the
putting in place of the balls of said bearing when fitting up the pedal on its
spindle.
In order to fit the pedal on to the spindle it is necessary having placed the ring on
its corresponding portion of the spindle and having sufficiently screwed up the inner
cone on the same spindle to hold the frame vertically, cap downwards, and to drop
into said cap the balls for the outer bearing; then to introduce the spindle the head
of which then bears against the plug surrounded by the balls previously introduced,
30 that none of the balls are caught between the cap and the head, which would

page_text: prevent such balls from coming into place when the whole pedal is reversed the cap
being then upwards.
The balls being thus placed in position the fitting up of the pedal is completed by
letting the spindle drop down the head then holding the balls between its inner face
and the cup on the spindle casing. The whole pedal is then held by the end of the
spindle and again turned upside down to enable the balls of the inner cup to be
introduced then the cone is regulated until the bearings are perfectly adjusted.
The whole pedal is now complete. In order to fix it on the crank it is sufficient
to screw it into the corresponding end of the crank utilising for this purpose the
ring which is turned by means of a spanner engaging with its flat sides thus turning
the spindle until the ring is tightly screwed between the crank and the inner cone.
Thus the spindle will be perfectly secured the ring compressed between the inner
cone and the crank forming a lock-nut.
The pedal having been mounted on the crank as described the bearings are
re-adjusted by means of a spanner and the hexagonal portion of the adjustment cone
it is then secured in said position by turning the ring and consequently the spindle so
as to take up by screwing the spindle, into the crank any looseness that may have
arisen between the crank and the adjustment cone.
Dated this 15th day of September 1897.
BOULT & WADE,
Agents for the Applicant.
.
A communication from LA SOCIÉTÉ A DARRACQ AND COMPANY, of Pré Saint Gervais,
in the Republic of France.
I, ALFRED JULIUS BOULT, of 111, Hatton Garden, in the County of Middlesex,
Chartered Patent Agent, 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 :—
The object of this invention is an improved pedal for cycles, the construction of
which will be easily understood from the following description, reference being had
to the accompanying drawing in which
.. Fig. 1 is a longitudinal section of the pedal according to the present invention.
Fig. 2 a detail view in vertical section on the line X Y of Fig. 1.
It will be seen on examining these figures that in the pedal according to
the present invention the sleeve or casing A through which the spindle B passes-
the end C of which is screwed into the crank D-is provided at each end with
stays E onto which is fitted the frame G forming the support for the foot.
The ends of the casing A form the inner cups for the balls, on which the
spindle B is supported. The outer end of the spindle is provided with a head H
between which and the bottom of the cup I on the casing A are placed the balls J
forming the ball bearing at the outer end. At the other end the balls L are
arranged between the cup. K on the casing A and a corresponding groove of an
adjustable cone M which may be screwed forward or backward on the screw-
threaded portion of the spindle B, so that both ball bearings can be regulated by
the adjustment of the cone.
The other screw-threaded portion C of the spindle B which is screwed into the
crank D, is provided with two symmetrical parallel flat sides O P and on this part
of the spindle is fitted, so as to be capable of sliding freely a ring or washer Q

page_text: provided preferably on its outer circumference with two parallel flat sides R S for
the purpose of enabling the ring to be grasped by a spanner, and said ring together
with the spindle B to be turned, so as to screw the spindle B tightly into the
crank D.
The flat portion O, P of the spindle C of a larger diameter than that of the
remaining part N begins at the enlarged part and end just before the end of
the spindle B so that when the pedal is fitted up, but not yet fixed in the crank D,
the ring Q cannot fall off and be lost.
The outer stay E of the frame G is provided with a central cap T covering and
completely enclosing the bearing. Said cap T is provided at its centre with a hole U
closed by a plug V carried on the end of a spring W fixed on the inner side of the
cap T. This plug fulfils two functions: firstly, it closes, un ler the influence of the
spring W, the hole U of the cap, through which the bearing is lubricated; and
secondly, it facilitates the putting in place of the balls of said bearing when fitting
up the pedal on its spindle.
In order to fit the pedal on to the spindle, it is necessary, having placed the ring Q
on its corresponding portion C of the spindle B and having sufficiently screwed up the
cone M on the portion N of the same spindle, to hold the frame G vertically, cap
downwards, and then drop the balls for the outer bearing I into said cap, then-to
introduce the spindle B the head H of which will bear against the plug V, surrounded
by the balls I previously introduced, so that none of the balls I are caught between
the cap and the head H, which would prevent such balls from coming into place when
the whole pedal is reversed, the cap T being then upwards.
The balls I being thus placed in position, the fitting up of the pedal is completed
by letting the spindle B drop down to the end, the head H then holding the balls J
between its inner face and the cup I. The whole pedal is then held by the end C
of the spindle B and again turned upside down to enable the balls L of the cap K to
be introduced, then the cone M is unscrewed on the portion N of the spindle B until
the bearings are perfectly adjusted.
The whole pedal is now complete. In order to fix it on the crank D it is screwed
by its end C into the corresponding end of the crank D utilising for this purpose the
ring which is turned by means of a spanner engaging with its flat sides R S thus
turning the spindle B until the ring Q is held tightly between the crank D and the
inner end M¹ of the cone M. Thus the spindle will be perfectly secured, the ring Q
compressed between M and D forming a lock-nut.
The pedal having been mounted on the crank as described, the bearings can be
re-adjusted by means of a spanner and the hexagonal portion M¹ of the adjustment
cone M, it is then secured in said position by turning the ring Q and consequently
the spindle B, so as to take up, by screwing the spindle C into the crank, any
looseness that may have arisen between the crank and the adjustment cone M.
Having now particularly described and ascertained the nature of the said
invention as communicated to me by my foreign correspondents and in what manner
the same is to be performed, I declare that what I claim is:
1. A pedal for cycles comprising a sleeve having ball bearing cups at its ends
combined with a spindle within said sleeve the screw-threaded end of the spindle
being adapted to be screwed into the crank for the purpose of securing the pedal and
an adjusting cone (M) screwed on the corresponding screw-threaded portion of the
spindle and a flatted dise on the flatted part of the spindle between the cone (M) and
the crank end and serving to screw or unscrew the spindle into or out of the crank.
and also to lock the cone in position by the adjustment of which cone alone the
adjustment of the bearings of the two cups is effected substantially as described.
2. pedal for cycles of the character described in which the spindle is provided
with a head (H) forming the bearing cone covered by a cap provided in its centre
with a hole closed by a knob carried on a spring secured to the inside of said cap
and serving, beside closing the lubrication hole to distribute the balls in a ring so as

page_text: to ensure said balls being placed in the correct position when fitting up, the pedal
between the head of the spindle and the cup in the sleeve, substantially as
described.
3. The combination and arrangement of parts constituting the complete cycle
pedal substantially as described and illustrated in the accompanying drawings.
Dated this 27th day of May 1898.
.
BOULT & WADE,
Agents for the Applicant.