Improvements in or relating to Motor Cycles.
Year: 1896

page_text: Date of Application, 5th Nov., 1896-Accepted, 16th Jan., 1897
Improvements in or relating to Motor Cycles.
I, HENRY JOHN LAWSON, of 40 Holborn Viaduct, in the County of London,
Engineer, do hereby declare the nature of this invention, and in what manuer the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
This invention relates to motor-cycles, its object being the construction of a
motor bicycle with a high speed motor.
In the accompanying drawings,
Fig. 1 is a perspective view of an improved motor-cycle according to this
invention; the illustration shows a lady's safety bicycle, but it is to be understood
that the invention is not limited to the example shown.
Fig. 2 is a view of part of Fig. 1 and comprises an alternative construction of
driving-gear as hereinafter described.
Like letters indicate like parts throughout the drawings.
With reference first to Fig. 1, the leading and trailing wheels A and B support
a frame C which has attached to it in rear of the bottom bracket C a motor D
supported by and between the two stays C and also by the stays C, C. D' is the
main shaft of the motor which is geared to the trailing-wheel B in the manner
hereinafter described. E is the pedal shaft geared by a chain F to a chain-
wheel B' on the trailing-wheel B in order that when desired the power of the rider
may be employed to aid the motor in propelling the cycle or to start the motor; an
automatic clutch can form part of the gear between the pedal shaft E and the
trailing-wheel B so that the latter may be allowed when driven by the motor to
over-run the pedal shaft but cannot conversely be over-run by it.
For the operative connection of the motor-shaft D' with the trailing-wheel B it
is preferred to dispense with a chain and to employ worm or helical gearing. In
the drawing the motor-shaft D' is provided with a worm D' gearing into a worm-
wheel G fixed on one end of an intermediate shaft G¹ carried by the stay C; the
other end of this intermediate shaft has secured on it a bevel pinion G' which
operates the trailing-wheel B by acting on a bevel-wheel B' fixed to the rear wheel
hub. If desired worm or helical gearing may be employed instead of the
wheels G B', or helical gearing may be used in place of the worm D³ and worm-
wheel G; for example in Fig. 2, G' is a worm and B' a worm-wheel, and D' and G
are helical wheels.
The battery H for the igniting spark and the carburetter J can be disposed
upon any convenient part of the frame, the tubes being arranged in any preferred
manner.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. In a motor bicycle the combination of a high speed motor and worm or helical
gearing substantially as described.
2. In a motor bicycle the combination of a high speed motor and worm or helical
bevel and chain gearing substantially as described and illustrated in Figure 1 of
the accompanying drawing.

page_text: 3. The combination and arrangement of parts constituting the complete driving
mechanism for a motor bicycle substantially as described and illustrated in Figure 1
or Figure 2 of the accompanying drawings.
4. The combination and arrangement of parts constituting the complete motor
bicycle substantially as described and illustrated in Figure 1 of the accompanying
drawings.
Dated this 5th day of November 1896.
HENRY JOHN LAWSON.
Boult & Wade,
Agents for the Applicant.