IMPROVEMENTS IN VELOCIPEDES
Year: 1882

page_text: LETTERS PATENT to Hector Auguste Dufrené, of No. 10, Rue de la Fidélité,
Paris, in the Republic of France, and 4, South St., Finsbury, London,
Civil Engineer and Patent Agent, for an Invention of "IMPROVEMENTS
IN VELOCIPEDES." A communication from Monsieur Albert Mange, of
Lonchamp, in the Republic of France.
COMPLETE SPECIFICATION filed by the said Hector Auguste Dufrené at
the Office of the Commissioners of Patents on the 10th February 1882.
HECTOR AUGUSTE DUFRENÉ, of No. 10, Rue de la Fidélité, Paris, in the Republic
of France, and 4, South St., Finsbury, London, Civil Engineer and Patent
Agent. 'IMPROVEMENTS IN VELOCIPEDES." A communication from Monsieur
Albert Mange, of Lonchamp, in the Republic of France.
"
The Invention communicated to me relates to improvements in velocipedes, the
object of the Invention being to construct a velocipede in which the weight of the
body of the rider is utilized as motive power.
In order to enable the Invention communicated to me to be readily understood
and carried into effect I will proceed to describe the same by reference to the
accompanying Drawing, in which Figure 1 is a plan and Figure 2 a side view of
a bicycle velocipede constructed according to this Invention. Similar letters in
both the Figures represent similar parts.
The improved machine is constructed of a horizontal frame A, A, A, in the form
of a fork; to the end of the fork of this frame is fixed the large or driving wheel B;
the ends of the shaft H have their bearings in the elbowed or cranked central
part of the frame. To the other end of the frame forming the tail of the fork is
fitted vertically in a socket the small fork C, which carries at its end the small
wheel D.
The driving mechanism consists of the saddle E, of the saddle rod F, which
slides in the rectangular hole of the bar M; this rod is jointed to the arm G, fixed
on the shaft H; J, J, are the treadles; K, K, the treadle carriers jointed to the
rocking levers L, L, fixed on the two ends of the shaft H; the connecting rod N is

page_text: jointed to the arm O; this connecting rod communicates motion to the crank Q,
fixed to the axle of the driving wheel B.
This velocipode is steered by the small hind wheel by means of the steering
handle R, to which is fixed the vertical switch rod S, which communicates its
movement to the horizontal switch rod T, so as to move the pivotted fork of the
small wheel.
The play of the parts of the motive mechanism may at the will of the rider be
lengthened or shortened and even brought to dead point without it being necessary
to stop the machine when travelling. To effect this it is only necessary to push
forward the small handle U by turning it to the right or the left band. This small
handle actuates the rod V, to the end of which is fixed the pinion X, which gears
with the double pinion Y, and communicates rotary motion to the pinion Z, to
which is fixed in the crank Q the helical screw A*. This screw causes the pivot B*
which slides in the crank Q to be advanced or withdrawn therein at will. As
soon as pressure is removed from the handle U the rod V and the pinion X return
to their normal position by means of the spiral spring D, D¹.
The weight of the parts of the mechanism which are on the left hand side of the
machine is equilibrated by the fly wheel C, placed for this purpose on the right
hand end of the driving wheel shaft.
To stop the machine it is only necessary to turn the steering handles, which will
impart a rotating movement to the bar E, E", at the centre of which is wound the
cord F, F, which actuates the break S, S", the hollow of which bears on the large
wheel.
I would remark that by this arrangement of motive mechanism the rider can
when he so desires touch the ground with his feet.
Having now described the Invention communicated to me and the best means
-with-which-I-am acquainted for carrying the same into effect, I would have it
understood that what is claimed and intended to be protected-by-the-herein-in-part_
recited Letters Patent is,-
The construction of velocipedes as herein described in which the weight of the
body of the rider is utilized as motive power, substantially as heroinbefore described
and illustrated in the accompanying Drawing.
In witness whereof, I, the said Hector Auguste Dufrené, have hereunto set
my hand and seal, this Ninth day of February, in the year of our Lord One
thousand eight hundred and eighty two.
T
ANHAתקזזז