Year: 1899

page_text: We, RAPHAEL BURBANO GARCIA, of 216, Livingston Street, Brooklyn, in the
State of New York, United States of America, Book-keeper, and CARL FREDERICK
KABISCH, of 95, Broad Street, New York City, United States of America,
Shipping Clerk, do hereby declare the nature of this invention to be
follows:
as
This invention consists of a bicycle pedal in the form of a pendent stirrup,
the stirrup serving to enable greater power to be exerted on the down stroke
than would be possible if the ordinary form of pedal is employed, since there
will be no danger of any lateral slip or movement of the foot, and whereby
also a greater control of the pedal may be obtained in back pedalling, the
advantages of the ordinary toe clip being retained without the use of such
clip, the pedal sleeve answering the purpose of enabling power to be applied
on the up stroke.
The stirrup consists of a bottom member upon which the sole of the foot is
to rest, and side members extend upward from the bottom, which serve to confine
the foot and prevent it from having undue lateral movement, the side members
being apertured to fit on the shouldered ends of the sleeve containing the
usual ball bearings turning on the pedal pin, the stirrup being connected directly
with the sleeve by screws which also serve to fix the cap enclosing the outer
end of the sleeve.
1
When a foot is placed in a stirrup, force is brought to bear upon the bottom
of the stirrup during the down stroke while upon the upstroke the upper portion
of the foot will bear against the pedal sleeve and power may therefore be
exerted upon both the up- and down-strokes. By the use of the stirrup pedal
the crank arm may be made shorter than usual and the stirrup being pivoted
upon the pedal pin the length of the upstroke is that of the length of the crank
arm but upon the descent of the crank arm the length of the stroke is the
length of the crank arm plus the depth of the stirrup. The path of the stirrup,
and consequently that of the foot, is elliptical and the addition of the stirrup,
it is evident, prevents cramping the limbs and affords the possibility of the
application of much more power to the pedal shaft than under the ordinary
construction of pedals without as much exertion on the part of the rider.
DJ 11
A1 1900
เ
A. M. & WM. CLARK,
Chartered Patent Agents, 53, Chancery Lane, London.

page_text: We, RAPHAEL BURBANO GARCIA, of 216, Livingston Street, Brooklyn, in the
State of New York, United States of America, Book-keeper, and CARL FREDERICK
KABISCH, of 95, Broad Street, New York City, United States of America,
Shipping Clerk, 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 consists of a bicycle pedal in the form of a pendent stirrup,
the stirrup serving to enable greater power to be exerted on the down stroke
than would be possible if the ordinary form of pedal is employed, since there
will be no danger of any lateral slip or movement of the foot, and whereby
also a greater control of the pedal may be obtained in back pedalling, the
advantages of the ordinary toe clip being retained without the use of such
clip, the pedal sleeve answering the purpose of enabling power to be applied
upon the upstroke.
The invention consists in the novel construction and combination of the
several parts, as will be hereinafter fully set forth and pointed out in the
claims.
Reference is to be had to the accompanying drawings forming a part of
this specification, in which similar characters of reference indicate corresponding
parts in all the figures.
Figure 1 is a side elevation of the pedal arm of a bicycle, a portion of the
pedal arm being in longitudinal vertical section, and Figure 1 likewise
represents an edge view of a stirrup carried by said pedal arm, the section
being taken substantially on the line 1-1 of Figure 2;
Figure 2 is a plan view of the pedal arm, the crank arm connected with the
pedal arm being in horizontal section; and
Figure 3 is a transverse section on the line 3-3 of Figure 1.
A represents a crank arm of a bicycle pedal shaft and B the pedal pin that
is carried by the crank arm. C represents a sleeve which is mounted to turn
loosely upon the pedal pin, the said sleeve having ball bearings upon the pedal
pin, the rear balls 10 being located within the hub formed on the sleeve C
and turning upon a cone 11, formed near the inner end of the pedal pin. At
the opposite or outer end of the sleeve C a second hub is formed, in which
balls 12 are located having bearings upon a cone 13 formed at or near the
outer end of the pedal pin as shown in Figure 1; but I desire it to be under-
stood that the character of the ball bearings may be changed if in practice it
is found desirable. In connection with the sleeve Ca stirrup D is employed
adapted to receive the foot of the rider, as it is not intended that the rider's
foot shall be brought in contact with the sleeve C of the pedal pin B as under
the ordinary construction of pedals.
The stirrup consists of a bottom member 14 upon which the sole of the foot
is to rest, of side arms or members 15 extending upward from the bottom, which
serve to confine the foot and prevent it from having undue lateral movement,
and an extension 16 from each side arm or member 15, the said extension 16
being apertured to receive projections 16 from the end portions of the
sleeve C. and the extensions 16 of the stirrup being secured to the end portions
of the sleeve C by means of screws 17, or like fastening devices, so that the
stirrup is connected directly with the sleeve, the sleeve being the medium of
pivoting the stirrup on the pedal pin. The outer end of the sleeve C is closed
or is protected by a suitable cap 18.
M

page_text: When a foot is placed in a stirrup, force is brought to bear upon the bottom
of the stirrup during the down stroke while upon the up-stroke the upper
portion of the foot will bear against the pedal sleeve C, and power may there-
fore be exerted upon both the up and the down strokes. By the use of the stirrup
pedal the crank arm may be made shorter than usual, and the stirrup being
pivoted upon the pedal pin the length of the up-stroke is that of the length
of the crank arm, but upon the descent of the crank arm the length of the
stroke is the length of the crank arm plus the depth of the stirrup. The path
of the stirrup and consequently that of the foot is elliptical, and the addition of
the stirrup, it is evident, prevents cramping the limbs and affords the possi-
bility of the application of much more power to the pedal shaft than under
the ordinary construction of pedals without as much exertion on the part of
the rider.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed we declare that what
we claim is:
.
-
1. A bicycle pedal constructed substantially as herein shown and described.
2. The combination with the pedal pin of a bicycle pedal shaft, of a stirrup
mounted to turn upon the said pin, said stirrup being adapted to receive the
rider's foot, substantially as described.
3. The combination, with the crank arm of a bicycle pedal shaft, and the
pedal pin connected with said crank arm, of a sleeve mounted to turn on the
pedal pin, and a stirrup attached to said sleeve, as described.
4. A bicycle pedal pin, a sleeve having ball bearings upon the pedal pin
and a stirrup, the upper ends of which are mounted to turn around the pedal
pin being secured to the ends of the sleeve for said pin and means substan-
tially as described, for connecting the stirrup with the sleeve and loosely
supporting the stirrup on the said pedal pin for the purpose specified.
5. In a bicycle pedal, the combination of the pedal pin having two oppositely
disposed cones thereon, a sleeve mounted to turn around the pedal pin and
having enlarged end portions bearing on the cones, the extremities of said end
portions being provided with longitudinally extended annular projections, a
stirrup, the side arms of which extend upwardly to the sleeve and are provided
with apertures respectively receiving the projections at the ends of the sleeve,
whereby to secure the side arms of the pedal to the sleeve, a cap mounted at
and covering the outer end of the sleeve, and fastening devices passing through
the cap and adjacent stirrup arm and into the sleeve, whereby to secure both
cap and stirrup to the sleeve.
1
1000
A. M. & WM. CLARK,
Chartered Patent Agents, 53, Chancery Lane, London.