Year: 1898

page_text: We, JOHAN MELCHER CARLSON, Mechanician, and EMIL ALBERT OLSON GÖTHE,
Mechanician, both of Lilljansplan, 5, Stockholm, Sweden, do hereby declare the
nature of this invention to be as follows:-
This invention relates to improvements in such velocipedes, which are driven
without rotating the pedals, that is to say, by only moving the same up and
down.
The object of this invention is to provide a treadle-mechanism by means of
which the disadvantages of a claim are avoided.
One pedal iever is firmly fixed to its axle, to which is also fixed a downwardly
directed lever, the latter being attached to the axle in such a manner that the
said pedal lever and downwardly directed lever are at right angles to each
other. The other pedal lever is in one piece with an upwardly directed lever at
right angles thereto and journalled on the axle. The upwardly and downwardly
directed levers are on the same side of the rear wheel with one of the pedal
levers. The other pedal lever is at the opposite side.
To the ends of the upwardly and downwardly directed connecting rods are
respectively coupled at one end, the other ends of said connecting rods being
connected to one and the same crankpin on a gear wheel, which is journalled
in the frame of the bicycle. Said gear wheel meshes with a pinion fixed to the
rear wheel of the bicycle.
}
When the pedal is pressed down the axle turns, so that the lever by means of
the connecting rod turns the gear wheel, which drives the rear wheel of the
velocipede by means of the pinion thereon.
Meanwhile the other connecting rod moves its lever backward, whereby the
other pedal is moved upwards, so that it arrives in its highest position, when
the former pedal is in its lowest position.
The gear wheels are provided with rollers instead of cogs, whereby the advan-
tage of a noiseless motion is obtained while the said wheels work without bending
and with the smallest friction, so that a great saving of power is obtained in
driving the machine.
Datod this 18th day of February 1898

page_text: Improvements in Driving Gear for Velocipedes.
We, JOHAN MELCHER CARLSON and EMIL ALBERT OLSON GÖTHE, both of
Lilljansplan, 5, Stockholm, in the Kingdom of Sweden, Mechanicians, do hereby,
declare the nature of this invention and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following
statement:-
This invention relates to improvements in such velocipedes, which are driven
without rotating the pedals, that is to say, by only moving the same up and
down.
'
The invention consists of a novel construction, combination and arrangements
of parts, hereinafter shown, described and claimed.
In the accompanying drawing is shown a bicycle provided with the said
treadle-mechanism.
Fig. 1 is a side elevation, and Fig. 2 a plan view of the
same.
One pedal lever a is firmly fixed to its axle e to which is also fixed a down-
wardly directed lever g, the latter being attached to the axle in such a manner
that the said pedal lever and downwardly directed lever are at right angles to
each other. The other pedal lever is in one piece with an upwardly directed
lever f, at right angles thereto and journalled on the axle c. The upwardly and
downwardly directed levers are on the same side of the rear wheel as with the
pedal lever a. The other pedal lever is at the opposite side.
To the ends of the upwardly and downwardly directed levers ƒ and g connect-
ing rods d and e are respectively coupled at one end, the other ends of said con-
necting rods being connected to one and the same crank pin m on
a gear
wheel B, which is journalled on a stub shaft in the frame R of the bicycle. Said
gearwheel B meshes with a pinion fixed to the rear wheel of the bicycle.
When one pedal a is pressed down the axle c turns, so, that the lever g by
means of the connecting rod e turns the gear wheel B, which drives the rear
wheel of the velocipede by means of the pinion thereon.
Meanwhile the other connecting rod d moves its lever f backward, whereby the
other pedal 6 is moved upwards so that it arrives in its highest position, when
the former pedal a is in its lowest position.
When the treadle moves a quarter of a revolution, the gear wheel B is
turned half a revolution as is also the case with the movement of the treadle a.
Thus the said treadles need only be pressed down once each in order that the
wheel B may rotate a whole revolution and drive the bicycle forward for a dis-
tance proportional to the gear ratio between B and n.
The gear wheels B and nor one of them, may be provided with rollers instead
of cogs in the well known manner, whereby the advantage of a noiseless motion
is obtained while the said wheels work without bending and with the smallest
friction, so that a great saving of power is obtained in driving the machine.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that what we
claim is:-
In velocipedes the combination with the pedal crank axle of a system or
systems of levers, one of which is with one of its ends firmly fixed to the pedal
crank axle and at right angles with one of the pedal cranks which is also firmly
fixed to the axle, while the end of another lever is pivotally mounted upon the

page_text: axle and firmly fixed to the other pedal crank at right angles, the said levers
being connected to a crank pin of a gear wheel by means of suitable connecting
rods, said gear wheel being provided with rollers, substantially as and for the
purpose set forth.
Dated this 19th day of October 1898.
HERBERT HADDAN & Co.,
Agents to Applicants,
18, Buckinghany Street, Strand, W.C., London.