Improvements in Cycle Pedals.
Year: 1898

page_text: Date of Application, 5th July, 1898
Complete Specification Left, 19th Sept., 1898-Accepted, 29th Oct., 1898
Improvements in Cycle Pedals.
I, OLAF PIHLFELDT, of Golden Hillock Road, Small Heath, in the City of
Birmingham, Engineer, do hereby declare the nature of this invention to be
as follows:
This invention relates to that class of cycle pedals in which the inward bulging
or distortion of the rat-trap side plates is prevented by cross stays which either tie
the side plates to the waist or centre, or to each other, and the object of my
invention is to simplify the construction and application of such cross stays.
According to one form of my said invention, the side plates of a rat-trap pedal
are stayed or tied laterally both against inward bulging and outward displacement
by a pair of tubular members or distance pieces, located preferably across the
middle of the pedal, and disposed respectively between the inner sides of the rat-
trap plates and the opposed surfaces of the waist or centre. The inward end part
of each stay is enlarged and concaved to fit the convexity of the waist, whilst the
stay is affixed by a headed pin, passed through a hole in the side plate and axially
through the stay, and with its screwed inner end taking into a screwed hole in
the waist.
By dropping the stays into position between the side plates and the waist and
passing the securing pins up their middles and screwing them home, the side plates
are firmly braced to the said waist, whereby no material change of position or
displacement can occur.
Instead of forming the concaved seating at the end of the distance piece, the
inner end of the same may be flat and abut against the flat side of a seating washer,
threaded on the pin and with its concaved face abutting against the waist.
OLAF PIHLFELDT,
By Henry Skerrett,
Agent for Applicant.
I, OLAF PIHLFELDT, of Golden Hillock Road, Small Heath, in the City of
Birmingham, Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
This invention relates to that class of cycle pedals in which the inward bulging
or distortion of the rat-trap side plates is prevented by cross stays which either tie
the side plates to the waist or centre, or to each other, and the object of my
invention is to simplify the construction and application of such cross stays.

page_text: Figure 1 of the accompanying drawing represents a side elevation and Figure 2
a plan of a rat-trap pedal fitted with cross stays disposed between the waist and
the side plates and constructed and arranged in accordance with my invention.
Figure 3 represents the said pedal in horizontal section upon the dotted line <,
Figure 1.
Figure 4 represents a cross section of the same upon the dotted line r¹, Figure 3.
Figure 5 represents the component parts of the pedal frame separated, and
partly in section and partly in elevation.
Figure 6 represents three different views of one of the stay pieces, separately.
The same letters of reference indicate corresponding parts in the said Figures 1
to 6 of the drawings.
According to this form of my said invention, the side plates a', of a rat-trap
pedal a, are stayed or tied laterally both against inward bulging and outward
displacement by a pair of tubular members or distance pieces b, located preferably
across the middle of the pedal, and disposed respectively between the inner sides
of the said rat-trap plates and the opposed surfaces of the waist or centre a². The
inward end part of each stay is enlarged at b, and concaved at b, to fit the con-
vexity of the waist, and each stay is affixed by a headed pin c, passed through
a hole as, in the side plate and axially up through the hollow middle b, of the
stay, and with its screwed inner end c¹, taking into a screwed hole a, in the waist,
whilst its head c³, bears against the outer face of the side plate.
By dropping the stays into position between the side plates and the waist and
passing the securing pins up their middles and screwing them home, the side
plates are firmly braced to the said waist, whereby no material change of position
or displacement can occur.
Instead of forming the concaved seating solid with the end of the distance piece
as represented in the said Figures 1 to 6, the inner end of the said stay may be
flat and abut against the flat side of a seating washer, threaded on the pin and
with its concaved face abutting against the waist.
Figure 7 represents a section of this form of stay, 6 being the tubular stay or
distance piece and b¹ the washer which is concaved on the one face 62, to take on
to the waist of the pedal, whilst the other face is slightly recessed or sunken at 63,
for the inner end of the stay to take within.
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:-
First In cycle pedals, cross-staying the side plates by a
pair of tubular
members or distance pieces, disposed respectively between the said plates and the
waist or centre, and strung upon pins, passing through the side plates and con-
nected to the waist.
Secondly: In cycle pedals, cross-staying the side plates by a pair of tubular
members or distance pieces, disposed respectively between the said plates and the
waist or centre and having waist-bearing surfaces at their inner ends, which said
stay-pieces are strung upon headed pins, passed through the side plates and
screwing at their inner ends, into the waist, substantially as described and set
forth.
Dah 17th
1000
OLAF PIHLFELDT,
By Henry Skerrett,
24, Temple Row, Birmingham, Agent for Applicant.