Improvements in Velocipedes.
Year: 1894

page_text: COMPLETE SPECIFICATION.
Improvements in Velocipedes.
I, CHARLES ANDREW EDWARD TALBOT PALMER, of Park Hill, Handsworth,
Birmingham, in the County of Staffordshire, Cycle Manufacturer, 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 the attachment of pedal pins to the cranks of velocipedes,..
and it consists in forming a split boss adapted to be contracted by a transverse
screw at the free end of the crauk, in slitting the crank longitudinally past the-
hole or eye in it, and in screwing the end of the pedal pin into the eye or hole in
the boss of the crank, the one pedal pin having a right hand screw thread and the
other a left hand one, the object being to secure the pedal pin to the crank in a.
simple and reliable manner without increasing its weight, and to relieve the work.
put upon the transverse nipping screw.
1 attain this end in the manner shown by the accompanying drawing in which :-
Figure 1 is a broken view in end elevation of a crank and pedal pin embodying
my invention, and Figure 2 is a broken view in side elevation-partly in section-
thereof.
Throughout the views similar parts are marked with like letters of reference.
The crank A is formed with a split boss B at its free end the hole C to receive.
the end d of the pedal pin D being tapped with a screw thread. The lugs b, b, on:
the end of the crank formed by the slit E are adapted to be drawn together by the
transverse screw F to contract the size of the hole C. A slit E is made of a
short distance up the centre of the crank A beyond the hole C forming a.
continuation of the slit E. The end d of the pedal pin D is threaded to adapt it.
to be screwed into the hole C in the crank, the said screw being a right or left
handed one according as the pedal is intended for the left or right hand side of
the machine.
By making the screw threads on the ends of the pedal pins right and left handed
the said pins are prevented from screwing out of the cranks while the slot E¹.
enables the boss of the crank to be contracted to grip the pedal pin with a smaller
and lighter screw.
I am aware that pedal pins have already been attached to cranks by being
screwed into holes therein, and also that cranks have been made with split bosses.
contracted by means of transverse screws for the purpose of nipping them on the
pedal pins, and therefore I do not claim these devices broadly, but
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 attachment of pedal pins to the cranks of velocipedes,.
specifically as herein before described and as illustrated by the accompanying drawing..
2. In a crank for a velocipede having a split boss at its free end adapted to be
contracted to grip the end of the pedal pin placed therein, extending the slot E
longitudinally beyond the eye or hole C in the crank to form another slot E¹, as.
and for the purpose set forth.
Dated this 7th day of Tune 100.1
ROBERT E. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.