Improvements relating to Cycle Cranks and Pedal Pins,
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements relating to Cycle Cranks and Pedal Pins,
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 consists of improvements relating to cycle cranks and pedal
pins my object being to provide simple and convenient means for the more
effectual connection of such parts.
In the application of my invention I form on the front face of the crank end
a conical boss or projection for fitting within or for the reception of a correspond-
ingly tapered or conical aperture formed in the adjacent end or face of the collar
or head of the pedal pin.
On the back or inner face of the crank end I also provide a boss or projection
preferably of a conical form and cut two or more slots or grooves across the
same to receive a suitably formed locking key whereby the pedal pin is effectually
prevented from accidental disconnection from the crank end.
The end of the pedal pin adjacent to the crank end, or the portion beyond the
conically recessed collar or head is screwed to enter the correspondingly screwed
eye or aperture through the crank end, the length of such screwed part being
increased by the bosses or projections hereinbefore described. The extremity
of the screwed part of the pin is suitably recessed and slotted to receive the central
portion of the locking key; the wings or projections of such key being arranged
to enter the slots cut in the back or inner face of the boss. The locking key is
retained in position preferably by a small screw or stud.
I adapt my invention to cranks and pedals of varying types or patterns, making
such modifications as may be necessary to meet the requirements of any particular
service.
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 consists of improvements relating to cycle cranks and pedal
pins my object being to provide simple and convenient means for the more
effectual connection of such parts.
In the accompanying sheet of explanatory drawings to be hereinafter
referred to,
Figure 1 is a front elevation, with part in section representing to an enlarged
scale, a cycle crank end and a pedal pin connected together in accordance with
my invention.
Figure 2 is a side or end elevation of the connected crank and pedal pin.
Figure 3 is a side or end view of the crank end alone.
Figure 4 is an end elevation and Figure 5 a front elevation of the locking key.
The section in Figure 1 is taken through the line ab Figure 2.
The same reference letters in the different views indicate the same parts.
In the application of my invention I form on the front face of the crank end A
a conical boss or projection A¹ for fitting within or for the reception of a corre-
spondingly tapered or conical aperture formed in the adjacent end or face of
the collar or head B¹ of the pedal pin B.
On the back or inner face of the crank end A I also provide a boss or pro-
jection A preferably of a conical form and cut two or more slots or grooves such
as a across the same to receive a suitably formed locking key C whereby the pedal
pin B is effectually prevented from accidental disconnection from the crank end A.
The end of the pedal pin B adjacent to the crank end A, or the portion beyond
the conically recessed collar or head B¹, is screwed to enter the correspondingly
screwed eye or aperture through the crank end, the length of such screwed part being
increased by the bosses or projections A1 and A2 hereinbefore described. The
extremity of the screwed part of the pin is suitably recessed and slotted to receive
the central portion of the locking key; the wings or projections of such key being
arranged to enter the slots cut in the back or inner face of the boss. The locking
key is retained in position preferably by a small screw or stud D.
I adapt my invention to cranks and pedals of varying types or patterns, making
such modifications as may be necessary to meet the requirements of any particular
service.
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:
The connection of cycle cranks and pedal pins substantially in the manner
described and as illustrated.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents for the Applicant.