Improvements in Mechanically Propelled Cycles.
Year: 1897

page_text: Date of Application, 20th Dec., 1897-Accepted, 19th Feb., 1898.
Improvements in Mechanically Propelled Cycles.
We, GASTON RIVIERRE, Gentleman, and LÉONCE GIRARDOT, both of 2, Rue
Brunel, Paris, in the Republic of France, 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 :-
:
This invention relates to various improvements relating to the mechanical propulsion
of cycles.
These improvements consist
1. Of the chainless transmission of the movement of the motor to the driving
wheel, which suppresses the efforts of torsion, to which the frame of the cycle is
subject when the movement of the motor is transferred by chain.
2. Of the peculiar disposition of the frame which is reinforced and allows of easily
placing supporting and maintaining the motor while giving to the crank shaft, to the
pedal crank shaft on the pedals of which the cyclist operates a width as narrow as that
of the usual cycles.
In the annexed drawing
Fig. 1 is a longitudinal elevation of a cycle, to which the improvements of our
invention are applied.
Fig. 2 is a horizontal section of the same cycle.
The frame which we use is sensibly the same as that of an ordinary cycle, the back
part of this frame is only a little lengthened in order to arrange the motor a which
is suspended by means of cramps c, c on the tube 6 placed in prolongation of that,
which forms the upper part of the frame, and maintained on the tubes d and e by the
attaching cramps, ƒ and g.
The toothed wheel i, mounted on the axle of the motor, gears with the wheel h
situated in the interior of the frame and the axle of which is carried by a ball bearing
placed in the connecting bracket of the tubes p and e placed on the side opposite to
that on which the transmission of the personal effort of the cyclist is made to the
driving wheel. The wheel h transfers its movement to the wheel mounted on the
hub of the driving wheel with which it is connected.
p, d, and n are strengthening tubes in the frame.
The work of the cyclist is transferred by chain to the driving wheel as in an ordinary
cycle.
If an accident happens to the motor, the cyclist disconnects the wheel i, after
taking off the screw nut m and can still operate the cycle by using only the pedals.
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 a cycle with mechanical propulsion.
1. The special disposition of the back part of the frame obtained by the prolonga-

page_text: 2. The manner of suspension and fastening the motor a by means of the cramp-
irons c, c¹, f, and g, to the tubes b, d, and e, respectively of the frame.
3. The transmission of the movement from the motor a to the driving wheel by
means of the 3 straight toothed wheels i, h, and 1, the two latter wheels being
arranged in the interior of the frame.
4. The disposition of the ball bearing for receiving the axle of the intermediary
straight wheel h in the connecting bracket of the tubes p and e placed on the side
opposite that on which is the gear for transmitting the personal effort of the cyclist,
to the driving wheel.
5. The general construction and combination of parts constituting the cycle 1
substantially as herein described and illustrated. ·
1
har 1907
HERBERT HADDAN & Co.,
Agents to Applicants, 18, Buckingham Street, Strand, W.C.