Mechanism for Permitting a Velocipede to be Driven by the Aid of the Rider's Weight.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Mechanism for Permitting a Velocipede to be Driven by the Aid of
the Rider's Weight.
I, OLIVER ZELAND, of 17, Kungsholmsgatan, Stockholm, Sweden, Engineer, do
hereby declare the nature of this invention to be as follows:—
The subject of this invention is a mechanism adapted to velocipedes whereby
the oscillations that the vehicle is exposed to during the riding in conjunction
with the weight of the rider are utilized in aid of the propulsion of the
velocipede.
The saddle carrier is fast with a rod in the saddle pillar tube provided at its
lower end with a cross piece guided in a crank casing forming a prolongation of
the said tube. The whole is carried by a spring fixed to the upper part of the
tube and to the lower end of the cross piece. To the latter are fixed two tooth
racks which gear each with its tooth wheel. Each tooth wheel contains a pawl
device, the inner part of which is constituted by the crank axle and a sleeve.
The latter carries a loose outer tooth wheel open diametrically and enclosing an
accumulator spring the inner end of which is fixed to the sleeve and the other
end to the tooth wheel. This tooth wheel gears with a tooth wheel on the crank
axle, said wheel being able to turn on the crank axle when the latter runs quicker
than the tooth wheel, but locked to the axle when the tooth wheel will run faster
than the axle.
Dated this Wifth day of Ton 1900
=
Mechanism for Permitting a Vélocipede to be Driven by the Aid of
the Rider's Weight.
I, OLIVER ZELAND, of 17, Kungsholmsgatan, Stockholm, Sweden, 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:
The subject of this invention is a mechanism adapted to velocipedes whereby
the vertical oscillations that the vehicle is exposed to during the riding in con-
junction with the weight of the rider are utilized in aid of the propulsion of the
velocipede.

page_text: In the accompanying drawing a suitable form of the invention is shown in the
verucal sectional front elevation Fig. 1 and vertical sectional side elevation Fig. 2.
The saddle carrier a is fixed in a tubular rod b that is guided in the upper end
of the saddle pillar tube e. The rod bis at its lower end provided with a cross
piece c guided in a crank casing d forming a prolongation of the tube e. The
whole is carried by a spring or springs f fixed to the upper part of the tube e
and at the lower end to the rod 6 or the cross piece c. The latter is provided
with two legs with tooth racks g,g, one in the rear and one in front of the
sleeve which racks gear each with its tooth wheel h and h 1. Each tooth wheel
contains a pawl device, these latter acting in opposite directions on the sleeve k
As pawls I may employ balls as here shown. The sleeve k carries a loose tooth
wheel open diametrically and enclosing an accumulator spring m, the inner end
of which is fixed to the sleeve k and the other to a peg n in the tooth wheel /.
This tooth wheel gears with a tooth wheel p on the crank axle o, said wheel being
able to turn on the crank axle when the latter runs quicker than the tooth wheel
but locked to the axle when the tooth wheel will run faster than the axle.
small tooth wheel p runs in ball bearings and q' and is by the pawl balls s con-
nected to the crank axle o.
The
By the vertical oscillations of the rod b the tooth wheels h and h¹ are turned
in opposite directions by the toothracks g and g', but only one of them at a time
drives the sleeve k. Thereby the spring m is wound up and then in its unwinding
it turns the tooth wheel the motion of which by the tooth wheel pis transmitted
to the crank axle o.. When the mechanism is at rest, it does not hinder the
motion of the vehicle as the crank axle runs loose in the wheel 2, whereby the
motion is also transmitted through the ball bearings q and q¹.
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. The utilizing the vertical oscillations of a velocipede while riding it and the
transforming same into driving power by the application and use of a mech-
anism consisting of a saddle bar carrying rod suspended in a helical spring and
provided with two toothracks which gear in opposite directions with two tooth-
wheels, that by means of pawl gear turning in opposite directions are connected
with a loose sleeve which by a spring is connected with tooth wheel gear that in
its turn by pawl gear is connected with the crank axle, substantially as set forth.
2. The construction of mechanism shown on the drawing.
Dated this kifth day of October 1898
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents,