Improvements in and connected with Pedals for Bicycles and other Purposes.
Year: 1898

page_text: Date of Application, 19th Dec., 1898
Complete Specification Left, 18th Sept., 1899—Accepted, 21st Oct., 1899
PROVISIONAL SPECIFICATION.
Improvements in and connected with Pedals for Bicycles and other
Purposes.
WILLIAM TURNER LORD, 16, Davies Street, Grosvenor Square, London, W.,
Electrical Engineer, do hereby declare the nature of this invention to be as
follows:-
I form pedals, or I make additions to pedals, or pedals and ecranks in any
convenient way, so that ordinarily or if preferred, at will, the pedals will not
revolve forward on their own centres, but are otherwise free to follow the move-
ment of the feet, as at present, so as to effect the following purpose. That when
extra impulse is desired it shall be possible, by good foot or ancle action, to tilt
the pedal backwards, and the cam, clutch, ratchet, or other arrangement placed
for the purpose, by preventing the pedal from revolving forwards on its own
centre, will enable force to be applied to the outer or forward part of the pedal
and thus obtain a result similar to that obtainable from a longer crank for a por-
tion of the revolution.
An arrangement may be made to effect the opposite action for back pedalling.
Springs may be used in the gear.
"
$6
or for-
To make my meaning clear I will describe the first models of my invention as
applied to a right hand crank, and I will use the terms "backwards"
wards as applying to the movement of the front upper part of pedal or crank
revolution. A ratchet wheel is attached to the pedal end of crank and the pawl
is attached to the inner side of the pedal. These are so arranged that when the
crank is at the top of the revolution or a little forward of it the rider by lowering
the heel and raising the toe can revolve the pedal backwards a little on its centre
or pin ready for effective thrust; and as the ratchet is arranged to prevent the
outer part of pedal revolving forwards on its own centre through the pawl catching
the ratchet it follows that the rider can by a dipping action of the toe bear on the
forward part of the pedal thus getting greater leverage for a portion of the
stroke. In another model I have used silent clutches instead of ratchets, and
again I have used springs to help bring a pedal of suitable shape into the most
favorable position for receiving the foot's pressure. To enable the outer side
or edge of pedal when on the back part of revolution to bear pressure for back
pedalling I use an automatic or other reverse acting and releasing clutch.
The kind of pedal referred to above, has the foot level at a greater distance from
the working centre or pedal pin than the ordinary pedals so as to allow rocking
action.
Dated this Seventeenth day of December 1800

page_text: Improvements in and connected with Pedals for Bicycles and other
Purposes.
WILLIAM TURNER LORD, 16, Davies Street, Grosvenor Square, London, W.,
Electrical 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:―
I form an appliance which I can affix to any standard pattern of pedal and
crank for the purpose of temporally stopping the forward revolution of the pedal
on crank pin and thereby allowing the pressure of the foot to bear on the outer
edge of pedal during part of its travel and so increasing leverage. I will des-
cribe a clutch, the box of which is fixed upon the pedal end and the other part
upon crank, but this may be reversed, and ratchets or other forms of clutches
could be used and the details for attaching the parts could be varied by the use
of screws or other convenient fixings.
In Fig. 1 the dotted lines A A shew the inner ends of pedal rubbers with the
clutch box B in position the lugs CC prevent it revolving apart from the pedal.
Fig. 2 shews a section of the box B. Fig. 3 shews the clutch J which works in B.
the pedal pin passing through D and the pins EE are to catch against sides of
crank H in Fig. 5.
Fig. 4 is a section of the clutch J.
Fig. 5 shews the parts together with balls or rollers F F which complete the
clutch action and enable the impulse to be given as described.
A suitable cover would enclose the parts.
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:-
1. An appliance for temporally locking the pedal to the crank for the purpose
herein described and which can be fitted to existing pedals and cranks.
Dated this 15th day of September 1899.