Improvements in Connecting Pedals to the Cranks of Bicycles, Tricycles, and other Velocipedes.
Year: 1893

page_text: Date of Application, 4th July, 1893
Complete Specification Left, 27th Feb., 1894-Accepted, 31st Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in Connecting Pedals to the Cranks of Bicycles,
Tricycles, and other Velocipedes.
We WALTER JOHN LLOYD and WILLIAM PRIEST of The Quadrant Cycle
Company Sheepcote Street, Birmingham in the County of Warwick, Velocipede
Manufacturers do hereby declare the nature of this invention to be as follows:-
Our invention consists of the construction and combination of parts hereinafter
described for connecting pedals to the cranks of bicycles, tricycles and other
velocipedes, the object of our invention being principally to dispense with the
ordinary projecting screw nut on the inner face of the crank by which screw nut
the pedal axle is connected to the outer end of the crank, and by dispensing with
the said screw nut to reduce the width of the tread of the vehicle.
We effect this object in the following manner. We form in the enlarged outer
end of the crank and passing through it a screwed hole, and in front of the
shoulder on the end of the pedal axle we form a screw of a size proper to take into
the screwed hole in the enlarged outer end of the crank. The outer end of the said
screwed hole is countersunk for receiving the shoulder near the screwed end of the
pedal axle. We split or divide the metal of the crank above the screwed hole
described by a slit or division in line with the axis of the crank so as thereby to
convert the outer end of the crank into elastic or spring jaws the said elastic or
spring jaws being forced together by a binding screw pin working in the said jaws.
The binding screw pin has an angular head for turning it by a spanner.
In connecting the pedal to the crank, the spring or elastic jaws of the crank are
allowed to open by relaxing the binding screw pin and the screwed end of the
pedal axle is screwed into the screwed hole in the crank. By then driving home
the binding screw pin, the spring or elastic jaws of the crank are drawn together
and contracted upon and made forcibly to grip the screwed end of the pedal axle
and thereby securely connect the pedal to the crank. The inner face of the
crank to which the pedal is thus connected is without the ordinary projecting
screw nut so that the width of the tread is lessened to that extent on each side of
the vehicle.
Instead of making a screw on the end of the pedal axle and a screwed hole in the
spring or elastic jaws of the crank, a plain and slightly taper hole may be made in
le crank and the end of the pedal axle beyond the shoulder be made plain and
ghtly taper. After the taper end of the pedal axle has been fitted in the plain
and taper hole in the elastic or spring jaws of the crank, the said jaws are closed
on and made to firmly grip the taper end of the pedal axle and thereby connect
e pedal to the crank.
Dated this 4th day of July 1893.
W. T. WHITEMAN,
Agent for the Applicants.

page_text: Improvements in Connecting Pedals to the Cranks of Bicycles,
Tricycles, and other Velocipedes.
We WALTER JOHN LLOYD and WILLIAM PRIEST, of The Quadrant Cycle
Company, Sheepcote Street, Birmingham, in the County of Warwick, Velocipede
Manufacturers, do hereby declare the nature of our invention and in what manner
the same is to be performed to be particularly described and ascertained in and by
the following statement :-
Our invention consists of the construction and combination of parts hereinafter
described for connecting pedals to the cranks of bicycles tricycles and other
velocipedes, the object of our invention being principally to dispense with the
ordinary projecting screw nut on the inner face of the crank by which screw nut
the pedal axle is connected to the outer end of the crank, and by dispensing with
the said screw nut to reduce the width of the tread of the vehicle."
We effect this object in the following manner. We form in the enlarged outer
end of the crank and passing through it a screwed hole, and in front of the shoulder
on the end of the pedal axle we form a screw of a size proper to take into the
screwed hole in the enlarged outer end of the crank. The outer end of the said
screwed hole is countersunk for receiving the shoulder near the screwed end of the
pedal axle. We split or divide the metal of the crank below the screwed hole
described by a slit or division in line with the axis of the crank so as thereby to
convert the outer end of the crank into elastic or spring jaws, the said elastic or
spring jaws being forced together by a binding screw pin working in the said jaws.
The binding screw pin has an angular head for turning it by a spanner.
In connecting the pedal to the crank the spring or elastic jaws of the crank
are allowed to open by relaxing the binding screw pin and the screwed end of
the pedal axle is screwed into the screwed hole in the crank. By then driving
home the binding screw pin the spring or elastic jaws of the crank are drawn
together and contracted upon and made forcibly to grip the screwed end of the
pedal axle and thereby securely connect the pedal to the crank. The inner
face of the crank to which the pedal is thus connected is without the ordinary
projecting screw nut so that the width of the tread is lessened to that extent on
each side of the vehicle.
Figure 1 of the accompanying drawing represents in front elevation and Figure 2
in side elevation, a pedal connected to the crank of a bicycle, tricycle or other
velocipede according to our invention ;
Figure 3 represents a portion of Figure 1 with part of the elastic or spring
jaws in section and Figure 4 represents a portion of Figure 3 in section;
Figure 5 represents the elastic or spring jaws of the crank without the binding
screw pin and Figure 6 represents the end of the pedal detached from the crank.
The same letters of reference indicate the same parts in the several figures of the
drawing.
a is the crank of the bicycle or other velocipede and is the pedal connected
thereto according to our invention. The enlarged outer end of the crank a is
provided with a screwed hole at c for receiving the screwed end d of the pedal axle,
the outer end of the said screwed hole being countersunk for receiving the shoulder
near the screwed end of the pedal axle. The elastic or spring jaws of the crank are
marked
e² the said jaws being formed by splitting or dividing the metal of the
crank below the screwed hole c by the split or division fin line with the axis of the
crank, the said split or division passing into the said screwed hole as represented.
The elastic or spring jaws e, e' of the crank are forced together by the binding
screw ping working in the said jaws. The jaw e is screwed internally for the
screwed part of the binding screw pin g to engage with (see Figures 3 and 5) and
e,
.1

page_text: the other jaw has a plain hole. The binding screw pin g has an angular head
for turning it by a spanner.
To connect the pedal b to the crank a the spring or elastic jaws e, e³ are permitted
to open by relaxing the binding screw pin 9 and the screwed end d of the pedal
axle is screwed into the hole c in the crank. The binding screw g is now driven
home so as to draw together the spring or elastic jaws e, e² and cause them to
contract upon and forcibly grip the said end of the pedal axle as represented in
Figures 1, 2, 3 and 4. The pedal is thereby securely connected to the crank.
By the combination of the screw threaded pedal pin with the screwed hole in
the elastic jaws of the crank the threads of the said pin and hole are caused to
engage or interlock when the said elastic jaws are contracted by the binding screw
pin thereby effectually preventing the oblique strains on the pedal from loosening
the screw connection of the parts. By the use of the screw box in one of the
screwed clamping jaws for the binding screw to take into, in place of the ordinary
plain or smooth jaws, a very firm grip of the said jaws upon the screwed pedal pin
is obtained.
It will be seen by an examination of Figures 1 and 2 that the inner face of the
crank is without the ordinary projecting screw nut by which the pedal axle is
usually connected to the crank so that the width of the tread is lessened to that
extent on each side of the velocipede.
Having now particularly described and ascertained the nature of our invention
and the manner in which the same is to be performed we would observe that
we make no claim to splitting the outer end of the pedal crank as hereinbefore
described nor to the binding of a plain pedal pin in a plain hole in the split pedal
crank by drawing together the jaws or split part of the crank but we declare that
we claim as our invention of "Improvements in Connecting Pedals to the Cranks
of Bicycles, Tricycles and other Velocipedes " ;-
The combination of the elastic jaws e, e² and screwed hole c in the end of the
crank with the screwed pedal pin or axle d, with the threads of which screwed pin
or axle the threads of the said screwed hole are caused to engage by tightening the
binding screw pin so as thereby to securely connect the pedal to the crank as
herein before described and illustrated in the accompanying drawing.
Dated the Twenty-sixth day of February 1894
WALTER JOHN LLOYD.
WILLIAM PRIEST.