Improvements in and appertaining to Velocipede Pedals.
Year: 1892

page_text: Date of Application, 21st May, 1892
Complete Specification Left, 21st Mar., 1893-Accepted, 22nd Apr., 1893
PROVISIONAL SPECIFICATION.
Improvements in and appertaining to Velocipede Pedals.
I, FREDERICK WILLIAM LANCHESTER, of 13 Bedford Row, London, W.C.,
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in the construction and arrangement of
pedals for bicycles, tricycles or other velocipedes, and its object is to so enclose the
treadle spindle and its ball bearings that dust is effectively excluded.
In one mode of carrying my invention into effect, I construct a pedal spindle to
screw into or otherwise attach to the driving crank arm; and at the crank end of
the said spindle I enlarge the diameter to be greater or slightly greater than any
part further out from the crank. Adjoining the enlarged part. I turn a recess and form
a cone surface, cone towards the crank; I then turn the spindle and terminate at
the external end with another cone surface facing outwards.
These cone surfaces serve for the spindle side or portions of the surfaces of
contact of the balls forming the ball bearings.
I connect the two pedal plates by a steel or other tube, screwed and brazed or
attached in any other known and convenient manner.
To the inner side of the inner pedal plate I similarly attach a turned cap, bored
out to fit the enlarged part of the pedal spindle and having a suitable internal
surface formed to oppose the first mentioned cone and receive the balls of the inner
ball bearing.
Into the outer side of the outer pedal plate, I screw an adjustable cap having
internal surfaces to receive the balls for the outer bearing, which surfaces oppose
the external cone on the spindle.
The balls are placed in the inner bearing by pulling out the spindle sufficiently
to allow them to drop into the recess between the inner cone and the larger part of
the spindle, when the spindle is pushed inwards the balls get between the inner
cone surface and the opposing cap surfaces of the cap attached to or forming part
of the inner pedal plate. When the balls are placed in the outer bearing, and the
cap.screwed down on them, the pressure of both bearings is adjusted, and so to
adjust both bearings it is only necessary to screw in the external cap.
To lock the external cap in any desired position the outer pedal plate is divided
into two plates through which the screw cap passes, and a set screw or screws is or
are provided, which when screwed up springs the outer division of the screw plate,
and so holds the cap firmly locked in position.
A loose plate is sometimes provided within the tube passing over the conical
external end of the spindle to prevent the balls from falling out of position when
being placed. A screw stopped aperture is provided to enable oil to be poured
into the bearing, and the head of the screw is sometimes caused to form a cover for
a small oil chamber.
In this manner my pedal bearings are entirely enclosed and the access of dust is
prevented.
At the same time the interior may be readily cleaned by pouring paraffin through
the screw closed oiling hole in the outer cap.
The adjustment may be made from the inner end if desired.
Dated this 20th day of May 1892.

page_text: COMPLETE SPECIFICATION.
Improvements in and appertaining to Velocipede Pedals.
I, FREDERICK WILLIAM LANCHESTER, of 13 Bedford Row, London, W.C.
Engineer, 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 :-
My invention relates to improvements in the construction and arrangement of
pedals for bicycles, tricycles or other velocipedes and its object is to so enclose the
treadle spindle and its ball bearings that dust is effectually excluded.
Referring to the accompanying sheet of drawings -
Figure 1 is a plan of a pedal constructed in accordance with my invention.
Figure 2 is an end elevation.
Figure 3 is a sectional plan.
Figure 4 is a plan showing rubber pedal plates.
Figure 5 is an end elevation corresponding to Figure 4.
In one mode of carrying my invention into effect (Figures 1, 2 and 3), I
construct a pedal spindle A to screw into or otherwise be attached to the driving
crank arm by a nut as A'; and at the crank end of the said spindle I enlarge the
diameter as at A' to be greater or slightly greater than any part further out from
the crank. Adjoining the enlarged part I turn a recess or groove A* and form a
cone surface or a semi-circular groove, cone towards the crank.
I then turn the spindle and terminate at the external end with a cone surface A³
facing outwards.
These cone surfaces, or groove and cone surfaces, serve for the spindle side or
portions of the surfaces of contact of the balls B B¹ forming the ball bearings.
I connect the two pedal plates E by a steel or other tube C, screwed and brazed
or attached in any other known and convenient manner.
To the inner side of the inner pedal plate 1 similarly attach a turned cap or
sleeve D, bored out to fit the enlarged part A¹ of the pedal spindle A and having
a suitable internal surface formed to oppose the first mentioned cone or groove A*
and receive the balls B of the inner ball bearing.
Into the outer side of the outer pedal plate I screw an adjustable cap H having
internal surfaces to receive the balls B for the outer bearing, which surfaces
oppose the external cone A' on the spindle.
The balls B are placed in the inner bearing by pulling out the spindle sufficiently
to allow them to drop into the recess between the inner cone or groove and the
larger part A of the spindle A; when the spindle is pushed inwards the balls get
between the inner cone surface and the opposing cap surfaces of the cap D attached
to or forming part of the inner pedal plate. When the balls B' are placed in the
outer bearing and the cap H screwed down on them the pressure of both bearings
is adjusted; and so to adjust both bearings it is only necessary to screw in the
external cap H.
To lock the external cap H in any desired position the outer pedal plate is
divided into two plates E2 E' through which the screw cap H passes and a set
screw and screws K K is or are provided which when screwed up springs the
outer division E³ of the screw plate and so holds the cap firmly locked in position.
A loose plate is sometimes provided within the tube passing over the conical
external end of the spindle to prevent the balls from falling out of position when
being placed. A screw stopped aperture stopped by a screw as F is provided to
enable oil to be poured into the bearing, and the head of the screw F is sometimes
caused to form a cover for a small oil chamber.
In this manner my pedal bearings are entirely enclosed and the access of dust is
prevented.

page_text: At the same time the interior may be readily cleaned by pouring paraffin through
the screw closed oiling hole in the outer cap.
The adjustment may be made from the inner end if desired.
Figures 4 and 5 illustrate the same construction of pedal, but having rubber
pedal plates as G.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
1. The improved construction and arrangement of dust proof velocipede pedals
hereinbefore described with reference to Figures 1, 2 and 3 of the drawings.
2. An enclosed velocipede pedal axle with inner and outer ball bearings as B B',
adjusting cap as H and locking device for the said cap, substantially as and for the
purposes hereinbefore described and illustrated in the accompanying drawings.
Dated this 20th day of March 1893.
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for the Applicant.