Improved Means for Locking Cycle Ball Bearing Cones and for analogous purposes.
Year: 1897

page_text: Date of Application, 23rd Nov., 1897
Complete Specification Left, 18th Aug., 1898-Accepted, 22nd Oct., 1898
PROVISIONAL SPECIFICATION.
Improved Means for Locking Cycle Ball Bearing Cones and for
analogous purposes.
I, HAVELOCK HARFORD, of 3, Albion Terrace, South Shields, in the County of
Durham, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to the provision of improved means for locking the ball
bearing cone of a pedal pin or other cycle part, but such means are also applicable
to analogous purposes.
In the application of my invention to the purpose of securing the ball bearing
cone on the outer end of a cycle pedal pin, I form notches or grooves in the other
end of the cone and I also slot the screwed end of the pin projecting beyond the
cone, for the reception of a key piece. The central portion of such key piece fits
within the pedal pin slot whilst its projecting ends engage with the notches or
grooves in the outer face or end of the cone.
The key piece is inserted after the cone has been adjusted to its required position,
and when so inserted I place a washer on the screwed stem, such washer having
grooves to engage with the outer side of the projecting key ends, the opposite
side of such ends being in engagement with the cone as herein before described.
On tightening up the end nut on the stem the washer is retained in position and
the key piece will effectually prevent rotation of the cone and of the nut in either
direction. The central portion of the key piece, fitting within the screwed stem
slot, is preferably extended to the extremity of such stem for the purpose of filling
up the slot to prevent contraction of the stem on tightening up the nut.
In the event of the nut or screw thread becoming stripped when in service, the
pedal pin end can be expanded to secure the cone and washer in position, by the
insertion of a thicker key piece within the slot.
The application of my invention to other analogous purposes differs only in the
necessary modifications of the parts to suit such services from its application to a
cycle pedal pin as hereinbefore described.
00
Improved Means for Locking Cycle Ball Bearing Cones and for
analogous purposes.
I, HAVELOCK HARFORD, of 3, Albion Terrace, South Shields, in the County of
Durham, Engineer, do hereby declare the nature of this invention and in what
[Price 8d.]

page_text: manner the same is to be performed, to be particularly described and ascertained in
and by the following statement:-
This invention relates to the provision of improved means for locking the ball
bearing cone of a pedal pin or other cycle part, but such means are also applicable
to analogous purposes.
In the accompanying sheets of explanatory drawings to be hereinafter referred
to:-
Figure 1 is an elevation representing to an enlarged scale the ball bearing cone
of a cycle pedal pin locked in position in accordance with my invention.
Figure 2 is an elevation representing the pedal pin alone.
Figure 3 is a sectional elevation and Figure 4 a plan of the cone.
Figure 5 is an elevation and Figure 6 a plan of the locking key piece.
The same reference letters in the different views indicate the same parts.
In the application of my invention to the purpose of securing the ball bearing
cone as A on the outer end of a cycle pedal pin B, I form notches or grooves as a
in the outer end of the cone A and I also form a slot in the screwed end of the
pin B, as illustrated, for the reception of a key piece C. The central portion of
such key piece C fits within the pedal pin slot b whilst its projecting ends e engage
with a pair of the notches or grooves a in the outer face or end of the cone A.
The key piece C is inserted after the cone A has been adjusted to its required
position, and when so inserted I sometimes place a washer on the screwed stem,
such washer having grooves to engage with the outerside of the projecting key
ends, the opposite side of such ends being in engagement with the cone as here
in before described. On tightening up the end nut on the stem the washer is
retained in position and the key piece will effectually prevent rotation of the cone
and of the washer in either direction. The central portion of the key piece, fitting
within the screwed stem slot, is preferably extended to the extremity of such stem
for the purpose of filling up the slot to prevent contraction of the stem on tighten-
ing up the nut. In the sample shown in the drawing, the washer, herein before
described, is dispensed with, but the cone is provided with a projecting boss or
face at its outer end as illustrated.
In the event of the nut or screw thread becoming stripped when in service, the
pedal pin end can be expanded to secure the cone and the washer in position, by the
insertion of a thicker key piece within the slot.
The application of my invention to other analogous purposes differs only in the
necessary modifications of the parts to suit such services from its application to a
cycle pedal pin as herein before described.
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:
1. A locking device for cycle ball bearing cones and for analogous purposes
substantially as described.
2. The combination of a notched or grooved cone as A or the like part and a
slotted pin or stud such as B, with a key piece C, substantially as and for the
purposes described and as illustrated.
1000
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents for the Applicant.