Improvements in and relating to Pedals for Velocipedes.
Year: 1892

page_text: Date of Application, 1st Nov., 1892
Complete Specification Lelt, 28th July, 1893-Accepted, 2nd Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in and relating to Pedals for Velocipedes.
We, HARRY LUCAS, of the Firm of Messrs. J. Lucas and Son, Little King
Street, Birmingham, in the County of Warwick, Lamp Manufacturers, and
JAMES ARCHER, Machinist, of the Works aforesaid, do hereby declare the nature
of this invention to be as follows:-
Our invention relates to an improved construction of ball-bearing pedal for
velocipedes, the object being to make the pedal more dust-proof, to provide more
efficient lubrication than at present obtains, to reduce weight, and to simplify
manufacture.
According to our invention the pedal pin is constructed as a straight pin having
a screw thread cut on one end, on which is threaded the adjusting cone of the ball
bearing and also the nut for clamping the pedal pin to the crank of the machine,
the said adjustable cone being shaped to adapt it to fit in the slot in the crank to
prevent it turning when the bearing is adjusted. The inner side plate of the pedal
is shaped to form, or it has fixed to it, a cupped recess adapted with the cone on
the pedal pin to form the race of the ball bearing. The outer plate of the pedal
is supported on the pedal pin either by means of a single ball working in a central
recess in the outer plate and in a recess in the end of the pedal pin, or the end of
the pedal pin is shaped to form a cone which with the recess in the outer plate
forms the race for the outer ball bearing, thus the outer end of the pedal pin does
not project through or beyond the outer plate of the pedal. The two side plates
of the pedal are connected by a suitable sleeve provided with any suitable device
for permitting of the introduction of the lubricant, and the said side plates are
adapted to carry rat-trap or rubber foot bars.
To adjust the bearing the nut fixing the pedal pin to the crank of the machine
is slackened and the pedal pin turned by means of a screwdriver a slot being cut
in the end of the pedal pin. This varies the position of the adjustable cone on
the pedal pin to give the required adjustment, the said adjustable cone being locked
to the pedal pin, and the pedal pin and the adjustable cone to the crank after the
necessary adjustment is attained by tightening the nut on the end of the pedal pin
against the crank.
Dated this 1st day of November 1892.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in and relating to Pedals for Velosipedes.
We, HARRY LUCAS, of the Firm of Messrs. J. Lucas & Son, Little King
Street, Birmingham, in the County of Warwick, Lamp Manufacturers, and
JAMES ARCHER, Machinist, of the Works aforesaid, 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:-
Our invention relates to an improved construction of ball bearing pedal for
velocipedes, the object being to make the pedal dust-proof, to provide more
efficient lubrication than at present obtains, to reduce weight, and to simplify
manufacture.

page_text: We attain this end by the construction illustrated by the accompanying drawing,
in which
Figure 1 is a view in sectional plan of our improved pedal, and Figure 2 is a
view in plan-partly in section-showing a modification in the construction
thereof.
In both views like parts are marked with like letters of reference.
The pedal pin A is constructed as a straight or taper pin without any projecting
parts, and it has a screw thread cut on one end, on which is threaded an adjust-
able cone B, and also a nut C for clamping the pedal pin to the crank of the
machine. The other end of the pedal pin is shaped to form a cone B¹. The
adjustable cone B has an extension 6 shaped to fit in the slot in the crank to
prevent it turning when the bearing of the pedal. is adjusted. The inner side
plate D of the pedal is shaped to form, or it has fixed to it, a cupped recess d
adapted with the cone B screwed on the pedal pin to form one of the races of
the ball bearing. The outer plate D' is shaped to form, or it has fixed to it, a
cupped recess d adapted with the cone B' on the end of the pedal pin to form the
other race of the ball bearing, thus the outer end of the pedal pin A does not
project through or beyond the outer plate D₁ of the pedal. Balls or spheres
are placed in the races of the ball bearing between the cone B and the cupped
recess d, and between the cone B' and the cupped recess d¹.
As a modification the outer plate of the pedal may be supported by a single
ball as shown by Figure 2, in which case the cone B formed at the end of the
pedal pin is a female one as shown.
The two side plates D and D¹ of the pedal are connected by a sleeve E,
provided with the usual hole covered by a spring clip or cover for permitting of
the introduction of the lubricant, the one end of the sleeve E screwing direct
into the recess d' in the plate D¹, and the other end of the sleeve carrying a
disc e screwing into the recess in the plate D. The plates D and D¹ carry
foot-bars of the rat-trap or rubber type which are attached thereto and supported
thereby by any of the well-known methods.
To adjust the bearing of the pedal, the nut C for fixing the pedal pin to the
crank of the machine is slackened, and the pedal pin turned by means of a screw-"
driver slot a cut in the end of the pedal pin. This varies the position of the
adjustable cone B on the pedal pin A to give the required adjustment, the said
adjustable cone being locked to the pedal pin, and the pedal pin and the adjustable
cone to the crank, after the necessary adjustment is obtained, by tightening the
nut C on the end of the pedal pin against the crank.
In order to provide against any movement of the adjustable cone on the pedal
pin when the nut C is being tightened, I may use a small set screw b threaded
into the part b¹ of the cone B to impinge on the pedal pin and so lock it thereto.
It will be seen that a pedal constructed as hereinbefore described is as dust-
proof as it can possibly be made, and that its bearings can be efficiently lubricated
as the races are so shaped that they retain the oil.
We wish it to be particularly understood that we do not limit ourselves to the
precise details of construction hereinbefore described and illustrated by the
accompanying drawing, but that we hold ourselves at liberty to make such
changes and alterations as fairly fall within the spirit and scope of our invention.
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. The improved construction of pedals for velocipedes, substantially as set
forth.
2. In a pedal for velocipedes, mounting the adjustable cone on the inner end of
the pedal pin so that it engages with the crank of the cycle and so that the bearing.
of the pedal is adjusted by rotating the pedal pin, as set forth.
3. In a pedal for velocipedes, the combination of the pin A having a screw

page_text: thread cut on one end and a cone B' formed at the other end, of the adjustable
cone B screwed on to the pedal pin and having an extension b adapted to fit in
the slot in the crank of the machine and a locking set screw b, of the side plates D
and D' each having a cupped recess on its inner face, of the sleeve E one end
of which is adapted to be screwed direct into the recess in the plate D' and the
other end of which carries a disc e adapted to be screwed into the recess into
the plate D, of the lock nut C threaded on the end of the pedal pin A, and
of the balls or spheres, all combined, arranged, and operating, as and for the
purpose set forth.
Dated this 10th day of July 1802
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicants.