Improvements in and relating to Velocipedes.
Year: 1894

page_text: Date of Application, 13th Nov., 1894-Accepted, 15th Dec., 1894
COMPLETE SPECIFICATION.
Improvements in and relating to Velocipedes.
I, EDMOND IMMER of Sultzeren near Münster in the German Empire,
Manufacturer, 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 object of the present invention, which relates to velocipedes, is to enable
the weight of the rider to be utilised in the propulsion of the vehicle.
I will describe my said invention with reference to the accompanying drawings,
in which :-
Figure 1 is a side elevation of a safety bicycle provided with my improvements,
Figure
partial elevation drawn to an enlarged scale, and
3.
Figure 3 a plan corresponding with Figure 2.
The saddle a is mounted upon a reciprocal saddle bar l, which is arranged in
the tube k forming part of the framing of the machine. The saddle and saddle
bar are pressed downwards by the weight of the rider, and upwards by the spiral
spring b. The upward and downward motions of the saddle bar are translated as
hereinafter described into rotary motion which is employed to aid the driving.
The spring babuts at its lower end against the framing, and at its upper end
against the saddle, so that normally the saddle is in its highest available position.
When the full weight of the rider is on the saddle, the bar is thereby forced into
its lowest available position. These positions may be limited by pins upon the
saddle bar, working on a slot or slots in the tube k. Upward and downward motion
is given to the saddle bar by the rider.
To convert this reciprocal motion into rotary motion for driving, I may employ
the lever c fulcrumed at m and having one end engaged between two studs or the
like upon the saddle bar as shewn by Figure 2. The lever thus receives an
oscillatory motion.
On a suitable part of the framing of the machine there is carried, upon a stud
or spindle n, a ratchet wheel e and a loose toothed wheel h. Around the axle n
there is coiled a helical spring 9 one end of which is made fast to the spindle, and
the other end to the rim of the wheel h. The spring may be enclosed in a suitable
casing as shewn, to protect it from the weather and dirt.
The wheel gears with a pinion i upon the axle o upon which there is also fixed
the chain wheel which is geared by a chain with the driving wheel of the
machine.
On the end of the oscillatory lever c there is pivoted the pawl d in engagement
with the teeth of the ratchet wheel. The detent falso engages with the teeth of
the ratchet wheel to prevent back motion, and both the pawl and the detent are
held up to their engagement by springs p q.
By these means, the upward and downward motion of the rider is translated into
rotary motion and utilised in driving the machine.
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 :-
In a velocipede, the combination and arrangement with a reciprocal saddle bar
of devices for converting the reciprocal into rotary motion and for communicating

page_text: Buch motion to the driving wheel of the machine, substantially as set forth and as
illustrated by the accompanying drawings.
Dated this 12th day of November A.D. 1894.
WILLIAM E. HEYS,
Agent for the Applicant.