A New or Improved Construction of Pedals for Velocipedes.
Year: 1897

page_text: Date of Application, 29th Jan., 1897
Complete Specification Left 20th Oct 1807 Accented 21th Doc
1007
PROVISIONAL SPECIFICATION.
A New or Improved Construction of Pedals for Velocipedes.
I, ALVIN LOUIS STRASBURGER, of 16 and 18 Maiden Lane, New York, United
States of America, Manufacturer, do hereby declare the nature of this invention
to be as follows;
•
This invention refers to a new or improved construction of pedal for velocipedes
as hereafter described, and wherein the body or main part is made from sheet
metal by pressing or stamping same in sections, each so formed that when the
said sections are placed and fixed together, the pedal is ready to receive the
bearings.
According to my invention, and as applied to the construction of a pedal of
so-called "rat-trap" pattern, that is having parallel treads with saw teeth edges
and a central tube to receive the pedal pin and carry the bearings, I form the
same in two exactly similar parts, the division between which (when placed
together) is in a horizontal plane passing centrally through both of the treads and
through the tubular centre, coincident with or parallel to, the axis upon which
the pedal revolves.
One half is formed from a piece of flat plate cut to proper configuration, its
edges being stamped or pressed up at about right angles to form the treads,
leaving say four webs or arms, extending therefrom towards the central part,
which is brought in like manner, to a semi-cylindrical shape generally having
enlarged and open ends; the upper edges of the aforesaid treads are formed with
the usual saw teeth or projections, and the latter are arranged to stand above the
convex periphery of the semi-cylindrical" centre. In some cases the part of
the plate forming the half of the treads may be continuous and extend from one
side to the other around and at a distance from, one end of the half tubular centre
and thus form a pedal (when completed) with rounded plate ends.
The other half pedal is formed identically as that herein before described.
These two halves are then placed together so that a complete central tube is
formed, the webs or arms then come into surface contact and are firmly rivetted
or otherwise secured to each other, and I then generally cut a screw thread in
the enlarged ends of the tubular centre, I fit therein bushes to form a race to
receive the balls, when this usual class of bearing is employed, and the body of
the pedal is then ready to receive the pedal pin which is constructed as usual.
Thus, for example, the pedal pin is formed with a shoulder near the crank, and
the opposite end is screwed to receive a ball cone, by which adjustment to com-
pensate for wear is obtained, and such a cone is held in place by any ordinary
ineans, such as a washer prevented from revolving by a flat on the pedal pin end,
and a nut on the pedal pin.
Upon the exterior end of the tubular centre, I generally provide a screwed cap to
exclude wet and dust:
It should be understood that it is not essential that the tread should be extended
around the end of the pedal.

page_text: In some cases the treads or tread plates may be formed to receive or carry rubber
or other blocks instead of, or in addition to, having saw teeth.
Dated this 29th day of January 1897
BREWER & SON
London and Leeds, Agents for the applicant.
I, ALVIN LOUIS STRASBURGER, of 16 and 18 Maiden Lane, New York, United
States of America, 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:-
This invention refers to a new or improved construction of pedal for velocipedes
substantially as hereinafter described wherein the body or main part is made
from sheet metal by pressing or stamping same in sections, each so formed that
when the said sections are placed and fixed together the pedal is ready to receive
the bearings and pedal pin.
In order that my invention may be readily understood I have appended a sheet
of illustrative drawings shewing a construction of pedal made in accordance with
my invention, and in which Fig. 1 is a longitudinal side elevation Fig. 2 a plan,
Fig. 3 a plan partly in section having a part removed hereinafter more fully
described, and Fig. 4 is a cross section taken on the line X Y of Figs 1 and 2.
According to my invention and as applied to the construction of a pedal of so-
called "rat-trap
pattern as shewn, (that is one having parallel treads with saw
teeth edges and a central tube to receive the pedal pin and carry the bearings),
I form the same in two exactly similar parts A A' the division at B, Figs. 1 and 4
(when the parts are placed together) being in a horizontal plane passing centrally
through both of the treads C C and through tubular centre D coincident with
or parallel to the axis upon which the pedal revolves.
"
One half A, say that shewn detached in plan at Fig. 3, is formed from a piece
of flat plate cut to proper configuration, its edges being bent or stamped as at C
Fig. 4 to about right angles, to form the half treads C C aforesaid, leaving say
four webs or arms E E extending therefrom towards the central part D, which
is bent or stamped in like manner, to a semi-cylindrical shape generally having
enlarged and open ends D¹ Fig. 2. The upper edges of the aforesaid treads C C
are formed with the usual saw teeth or projections C', and the latter are arranged
to stand above the convex periphery of the semi-cylindrical centre D. In some
cases that part of the plate forming the half of the treads C may be continuous
as shewn, and extend as at C2, Fig. 2, from one side to the other, around and at
a distance from one end of the half tubular centre D), and thus form a pedal (when
completed) with rounded plate ends.
The other half pedal A is formed identically as that hereinbefore described,
and marked with corresponding letters of reference.
These two halves are then placed together so that a complete central tube is
formed, the webs or arms E then come into surface contact and are firmly
rivetted, as at E¹, or are otherwise secured to each other, and I then generally
cut a screw thread in the enlarged ends D' of the tubular centre, and I fit therein
bushes D to form a race to receive the balls, when this usual class of bearing
is employed, and the body of the pedal is then ready to receive the pedal pin F
which is constructed as usual. Thus for example the pedal pin F is formed
with a shoulder F¹ near the crank, and the opposite end is screwed to receive a

page_text: ball cone G by which adjustment to compensate for wear is obtained, and such
a cone is held in place by any ordinary means, such as a washer prevented from
revolving by a flat on the pedal pin end, and a nut on the pedal pin.
Upon the exterior of the tubular centre I generally provide a screwed cap H
to exclude wet and dust.
It should be understood that it is not essential that the tread should be ex-
tended around the end of the pedal as at C².
In some cases the tread plates C may be formed to receive or carry rubber or
other blocks instead of, or in addition to, having saw teeth as shewn, and in some
cases the metal may be shaped otherwise than by stamping or pressing.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
In pedals for veloicpedes, a pedal body or frame having two parallel tread
plates, and a tubular centre to contain the bearings, and through which the pedal
pin passes, such being constructed in two halves, the division being in a plane
parallel with the axis upon which the pedal revolves, passing about centrally
through both treads, and through the central tube, the two similar halves being
secured together, and then forming the complete pedal body, substantially as
described.
2. In pedals for velocipedes, a pedal body or frame, substantially as described
and shewn with reference to the accompanying drawings.
Dated 29th day of October 1897
BREWER & SON
London & Leeds. Agents for the applicant.