Improvements in Pedals for Velocipedes.
Year: 1891

page_text: Date of Application, 14th Oct., 1891-Accepted, 14th Nov., 1891
COMPLETE SPECIFICATION.
Improvements in Pedals for Velocipedes.
AUGUSTINE CAMPBELL DAVISON 531 Holloway Road in the County of
Middlesex Civil 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 pedals for rotary or similar action cycles and my object
is to make the pedal more simple and efficient and more convenient in use.
To obtain this end I place upon an ordinary pedal pin attached to the crank a
tube free to turn on the said pin and mounted in the usual way upon plain ball or
cone bearings according to choice. This tube through which the pressure from the
sole of the shoe passes, may be covered with india rubber or other material, or may
be roughened to correspond to the bars of an ordinary "rat trap" pedal.
Attached to this tube at or near the ends are two lugs at right angles to it,
through each of which a piece of wire passes both forward and backwards. At
the foremost side these pieces of wire proceed forward far enough to clear the toe
of the shoe and are then turned up into a hook to prevent the foot slipping forward
on the tube. At the rear end they proceed backwards about two inches and are
then turned up so as to just touch the sole of the shoe and thus prevent the tube
turning over under the foot. These rear ends of the wires may be joined into a
bar if desired. These wires are free to slide through the aforesaid lugs to a limited
extent and can be fixed in varying positions by two small set screws or similar
means so as to accommodate different lengths of foot.
I will now proceed to describe with reference to the accompanying drawing t
manner in which my invention is to be performed.
the
Figure 1 represents in vertical section a pedal constructed according to my
invention.
Figure 2 is a view in plan of the pedal.
Figure 3 is a view in back elevation of the pedal.
Figures 4 & 5 are views in vertical section and part back elevation respectively
of a modification of that part of my invention appertaining to the attachment of
the wire to the tube.
The same letters of reference indicate the same parts in the several figures of the
drawing.
Referring to Figures 1, 2 and 3, a is an ordinary pedal pin. b is the tube mounted
upon bearings and free to turn on the pin a. The tube b is covered with the india
rubber c. d, d are the lugs either formed in one with the ends of the tube b or
attached to it by brazing or other means. e e are two small set screws through the
lugs. are the wires passing through the lugs dd, and are turned up in front and
connected into the hook, and are also turned up at the back and connected into
the bar. The wires ff are free to slide through the lugs d, d to a limited extent
and can be fixed at varying positions by tightening the set screws e e.
The tube b
may be roughened or serrated instead of having the india rubber covering c upon
it if desired.
Referring to Figures 4 and 5, 6 is the tube as before, and c is the indiarubber
covering, and are the forward portion of the wire hook and is the back part
or bar which in this case is made separate and attached to the tube by being
passed round it as a clip and tightened by the nuts g g which also serve to adjust
the length of the forward wire or hook. It is obvious that the clip portion of the
back part may be made separate and the wire brazed or rivetted to it if desired.
I prefer to make the back part of the wire into a loop as shown and also to
make it somewhat thicker than the front part f¹ so as to bring the centre of gravity

page_text: of the pedal low and cause the pedal to remain in a suitable position for placing
the foot upon easily.
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 pedal for rotary action cycles consisting essentially of a tube and wire clips
substantially as described arranged and operating as and for the purpose set forth.
Dated this the 12th day of October 1891.
AUGUSTINE CAMPBELL DAVISON.