Improved Treadle Driving Gear for Bicycles, Tricycles, Velocipedes, and Vehicles of a like Description.
Year: 1897

page_text: Date of Application (in United Kingdom), 29th Jan., 1897
Complete Specification Left, 29th Jan., 1897-Accepted, 20th Mar., 1897
COMPLETE SPECIFICATION.
Improved Treadle Driving Gear for Bicycles, Tricycles, Velocipedes,
and Vehicles of a like Description.
I, EDWARD ALBERT TRENDALL, of. Upper Pitt Street City of Auckland,
Provincial District of Auckland and Colony of New Zealand, Printer, 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 :-
The rider being seated as usual in the saddle F the feet are placed on the pedals
at the end of the levers G and H the action of the rider pressing one foot down-
wards pulls the rack K forwards which causes the cog-wheel I and the driving-
wheel B to revolve and then when the opposite pedal is similarly acted upon the
other lever rises pushing the rack K backwards over the cog-vheel I as aforesaid.
The uniform movement of the levers in their upward and downward motion is
assisted by a rope passing over a pulley as shown at P.
Similar arrangements of the parts of the apparatus are on both sides of the
drawing where only one side is described.
The lever G is of an angular form the fulcrum being at O, the pedal E being
at one end of the lever and the rack attachment K at the other part.
The cog-wheel with ratchet Q turns loosely on the spindle which passes
through the center of the driving wheel B and is engaged by the toothel rack K
kept in position by a strap and sheaf L which allows the rack freedom of motion.
The pall R fixed to the hub of the driving-wheel B as shown in drawings, will
allow the rack K to pass freely one way as in descending, but when the pedal is
pressed downwards the pall will prevent the rack ascending without turning the
driving-wheel and thus propel the machine.
The rack K can be adjusted to the lever arm M shown in the drawings as
attached at N thus regulating the speed and power exercised on the cog-wheel 1.

page_text: Is a pedal.
F is a seat or saddle.
G is the right lever to act on the driving-wheel connected by a rack motion-
see enlarged drawing.
H is the left lever used alternately in like manner.
I is a cog-wheel which is caused to revolve by the rack K.
→
K is the rack which may be straight as shown or curved and is put in motion by
the rider pressing on the levers G and H.
L is the sheaf to keep the rack K in position.
M is the lever arm with slot or slide and stops to regulate attachment of
rack K.
N is the present point of attachment of rack K to lever arm m.
O is the fulcrum of the whole lever arrangement.
P is the pulley for rope to assist in uniform motion of pedals.
Figs. 2 and 3 are enlarged plans of driving gear the parts being marked as
under.
Qis the ratchet. S spindle. T holes for spokes.
R is the pall. U hub. W flange.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The action of the racks, curved or straight operated by levers attached to foot
pedals engaging cog-wheels with pall and ratchet attachment, which causes the
driving-wheel to revolve.
Dated this Twenty-ninth day of August 1896.