mprovements in or relating to Motor-driven Velocipedes and other Vehicles.
Year: 1896

page_text: Date of Application, 21st Feb., 1896
Complete Specification Left, 21st Nov.. 1896-Accepted, 13th Feb., 1897
PROVISIONAL SPECIFICATION.
mprovements in or relating to Motor-driven Velocipedes and other
Vehicles.
I, JOHN JAMES HENRY STURMEY, of No. 19 Hertford Street, Coventry in
he County of Warwick, Journalist do hereby declare the nature of this invention
to be as follows:-
My invention relates to motor-driven velocipedes and other vehicles and consists
principally in the hereinafter described construction and arrangement of the driving
gear.
With certain motors at present in use, such as the Pennington, there is no
provision for readily throwing the motor out of gear while the velocipede or
other vehicle is in motion, and the motor when not actually driven acts as a
brake. According to my invention 1 economise power by providing a disconnecting
gear as follows. On the shaft carrying the cranks to which the piston rods or
connecting rods are connected I mount a spur wheel concentrically therewith. On
the said shaft I also mount a rocking arm or frame carrying a pinion which
gears with the said spur wheel. The said pinion is also adapted to gear with
another spur wheel attached to a suitable part of the velocipede or other vehicle.
Motion is transmitted from the motor to the velocipede or other vehicle through
the two spur wheels and the pinion above referred to. A rod with handle and rack
or other suitable device is employed in connection with the said arm or frame
whereby the said pinion may be thrown into or out of gear with the second spur
wheel while remaining in gear with the first. Thus when the motor is not required
to drive the velocipede or other vehicle it may be readily thrown out of gear, by
moving the pinion.
In a rear driving safety bicycle the second spur wheel may be carried by the
pedal-crank-axle or one of the pedal-cranks or the like and, to save space or for
other reasons, may consist of a hollow cylinder or ring supported by arms projecting
towards the central plane of the machine and carry the spur wheel around the inner
end of the face of the cylinder or ring. And the motor and the shaft carrying the
cranks, the first spur pinion and the rocking arm or frame may be mounted on
the diagonal tube, or preferably on the lower backbone, if the franie be of the
well known so called "diamond" pattern. Motion may be transmitted from the
pedal-crank-axle or the like to the road wheel through the usual chain, or other
suitable, gear. This arrangement is also applicable to some tricycles. Or the
motor might be carried on the back part of the frame of the bicycle and the second
spur wheel be attached direct to the road wheel without the intervention of the
said chain or other like gear. In any case a suitable multiplying or reducing gear
may be provided if desired.
In applying my invention to other velocipedes and other vehicles I proceed in a
manner similar to that above described making such modifications, if any, as
circumstances may require.
Dated this 20th day of February 1896.
G. DOUGLAS LEECHMAN,
18 Hertford Street, Coventry, Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Motor-driven Velocipedes and other
Vehicles.
I, JOHN JAMES HENRY STURMEY of 19 Hertford Street, Coventry in the
County of Warwick, Journalist, 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 :-
My invention relates to motor driven velocipedes and other motor driven vehicles
and consists principally in the hereinafter described construction and arrangement
of the driving gear.
With certain motors at present in use, such as the "Pennington," there is no
provision for readily throwing the motor out of gear while the velocipede or other
vehicle is in motion, and consequently the motor, when not actually driving, acts as
a brake.
According to my invention I economise power by providing a disconnecting gear
as hereinafter described.
And in order that my invention may be readily understood, I will, in describing
the same, refer to the accompanying illustrative drawings, which show the applica-
tion thereof to a rear driving safety bicycle.
Figures I and 11 are a side view and plan respectively showing the application
of my invention.
Like reference numerals refer to similar parts throughout the drawings.
On the shaft 2, carrying the cranks 3 to which the piston rods or connecting
rods 4 are jointed, 1 mount a gear wheel 5 concentrically therewith. On the said
shaft 21 also mount a rocking arm or frame 6 carrying a pinion 7 which gears
with the wheel 5. The said pinion is also adapted to gear with another gear
wheel 8 attached to the crank axle 9 or some other suitable rotary part of the
velocipede. Motion is transmitted from the motor 13 to the velocipede through
the two wheels 5, 8 and the pinion 7 above referred to. A rod 10 with handle and
rack 11 or some other suitable device, is employed in connection with the said arm
or frame 6 whereby the said pinion 7 may be lowered into or raised out of gear with
the second wheel 8, while remaining in gear with the first wheel 5. Thus, when
the motor is not required to drive the velocipede it may be readily thrown out of
gear, by shifting the position of the pinion 7 as above stated.
In a safety bicycle the wheel 8 may be carried by the pedal crank axle 9 or one
of the pedal cranks 12 or the like provided the said wheel always be arranged
concentric with the axis of the crank shaft, and, to save space or for other reasons the
said wheel may consist of a hollow cylinder or ring (see Fig. 2) supported by arms
projecting towards the central vertical plane of the machine and having spur
teeth. The motor 13 and the shaft 2 carrying the cranks 3, the wheel 5 and the
rocking arm or frame 6, may be mounted on the diagonal tube 14, or preferably on
the lower backbone 15, if the frame be of the well known, so-called "diamond"
pattern. Motion may be transmitted from the pedal crank axle or the like to the
road wheel through the usual chain, or other suitable gear. Or the motor can be
carried on the back part 16 of the frame of the bicycle and the wheel 8 be attached
direct to the road wheel 17 without the intervention of the said chain or other like
gear. In any case a suitable multiplying or reducing gear is provided if desired.
In using a motor velocipede or other motor vehicle embodying this invention it
will generally be advisable to slacken speed before throwing the gear into and out
of action.
In applying my invention to other velocipedes and other vehicles driven by

page_text: motors I proceed in a manner similar to that above described making sucu
modifications, if any, as circumstances inay require.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. A motor-driven velocipede provided with means, substantially as set forth,
whereby the propelling power can be readily thrown into or out of action at the
will of the rider.
2. In a motor-driven velocipede or other motor driven vehicle, the combination
with the motor of a gear wheel carried by a rocking arm or frame mounted on the
crank shaft, such gear wheel engaging permanently with a gear wheel on the crank
shaft and being adapted either to engage with or be disengaged from another gear
wheel on the pedal crank axle, or some other suitable part of the vehicle-
substantially as and for the purpose set forth.
1
Namamber 1896.
G. DOUGLAS LEECHMAN,
18 Hertford Street, Coventry, 75 Chancery Lane, London, W.C., and
49 Middle Abbey Street, Dublin,
Patent Agent for the Applicant.