An Improved Pedal and Crank-pin for Bicycles and the like.
Year: 1897

page_text: Date of Application, 15th July, 1897-Accepted, 15th July, 1898
COMPLETE SPECIFICATION.
An Improved Pedal and Crank-pin for Bicycles and the like.
I, IVOR REES, of Sully House, Sully, near Cardiff, in the County of Glamorgan,
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; —
The invention relates to an improved form of pedal for bicycles and the like.
Screwed into the crank end, is a short tubular crank pin, the end of the tube,
projecting to about or near the centre of the pedal. Working within this tube,
is the pedal pin or spindle, which projects outwards of sufficient length, to take
the central hub of the pedal frame, which is bored out to fit the spindle and is
prevented from turning on same, by a square part, or other equally secure arrange-
ment, the central pin, having shoulders formed at its inner end, or back portion
of the tube, and near its centre at the front part of the tube. Against these
shoulders, steel balls revolve, hardened steel cups or cones, being screwed into
the inner or outer ends of the tubular crank-pin, the outer one being adjustable,
and secured by a lock-nut to prevent the cone from moving after adjustment,
the outer end of the tubular crank-pin being enlarged, to allow for the insertion
of the cone and the ball bearings.
The central hub is made in the form of a cup so as to project over, and protect
the outer end of the hollow crank-pin with its arrangement of ball bearings and
thus prevent access of dirt.
Projecting arms are formed in one piece, upon the cup-shaped hub, or they may
be screwed or rivetted thereto, for the purpose of carrying the outside plates of the
pedal, which may be rattrapped, or of other suitable form, the outer end of the
pedal being supported by cross stays to the outer end of the pedal pin or spindle.
In the accompanying drawings:
Figure 1 is an elevation of the entire pedal and crank-pin. A is the hollow
crank pin, and B the screwed part for insertion into the crank end. C being
a shoulder which is screwed home to the face of the crank. D is the pedal pin
or spindle, to which the pedal is attached. E is the hub of the pedal, and E¹
F, F, are projecting
the cup shaped projection for protecting the bearings.
arms attached to the cup, and to which are secured the rattrap or other form
of plates G, G. H, H, are cross braces, the centre part of which is attached to
pedal hub and squared and fitting, on the pedal pin D, the outer part being
attached to the plates G, G.
Figure 2 is a section through the centre of the pedal. I is the enlarged end
of the hollow crank pin. J, J, are ball bearings. K, the screwed cone of hardened
steel for the adjustment of the bearings. L, is a lock-nut screwed on to a projec-
tion on the outer end of the cone K; M is a hardened steel cone, screwed to the
inner end of the hollow crank-pin, against the face of which, the ball bearings
revolve.
O, is also a projecting shoulder, against which, the outer ball bearings revolve.
P, is the end of an ordinary bicycle crank, into which the hollow crank pin A

page_text: 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:
A hollow crank-pin, with an internal revolving pedal pin or spindle, to the
outer end of which the pedal frame is secured, ball bearings, as herein specified
working within the hollow crank-pin. The cup for protecting the end of the
bearing of the hollow crank pin, and the removeable pedal frame, for use as
rattrap or rubber pedal, all arranged and constructed substantially as herein
described and set forth.
Dated the 15th dox of I.... 100%
PHILLIPS & LEIGH,
No. 22, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.