Year: 1888

page_text: This Specification was, upon the 22nd day of July, 1890, amended under
Sections 18 to 21 of the Patents, Designs, and Trade Marks Act, 1883, by the
insertion in the claim (page 2, line 41) of the word "special" after "The "; to
read as follows:-

page_text: Date of Application, 29th Aug., 1888
Specification Accepted, 19th Oct., 1888
motors to Tricycles and other Velocipedes.
We, JOHN SHERRIN and JOHN VAUGHAN SHERRIN both of Codrington Road,
Ramsgate in the county of Kent, Electrical Engineers 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 :—
In our patent Specification of 2nd January 1888 No. 20 we have described and
claimed the entire or partial propulsion of velocipedes and other light vehicles by
means of electro-motors worked by primary batteries, together with a special con-
struction and arrangements of parts in which the transmission of power is effected by
endless chain or cord. Now according to our present invention we transmit the
power from the electro-motor to the main wheels or other wheel or wheels by means
of worm and worm-wheel, or by bevel pinion and wheel, or by external or internal
spur gearing or Robertson's or other frictional gearing. For this purpose we arrange
the motor or its driving spindle in close proximity to the part to be driven thereby,
the battery being placed in the most suitable part of the vehicle for balancing and so
as not to be in the way of the rider and so as to be easily removable when required.
The electrical connections between the battery and the motor are so arranged in
connection with the brake-handle that the putting the brake on or off breaks or
closes the circuit, as described in our patent application of 11th April 188$
No. 5390.
We shall now proceed to describe some typical forms or constructions according
to this our invention.
Figure 1 is a side view, figure 14 end view of a detail and figure 2 an end view
of a tricycle, H is the usual pedal spindle, K the gearing chain, and I and L the
sprocket wheels for transmitting motion to the main or hind axle. G is the riders
seat.
To the frame har or backbone are clamped two springs S the flat upper parts
of which are rivetted or otherwise fastened to the bottom bars of a light steel or
iron open-worked box or cage T which is adapted to receive two or more battery
cells M. It is evident that springs of different constructions may be applied and wo
do not limit ourselves to the use of two. The front of the cage T is by an elastic
or other loop or staple U attached to the seat pillar in such manner as to prevent the

page_text: cage
with battery from being too violently shaken when the vehicle is in motion. In
order to facilitate the removal of the battery cells, the back of the cage T may have a
hinged gate as shewn like that of a dog cart. The cage may be of any light strong
open-worked form. From the battery the wires are carried to the motor N which is
hung from and clamped to the backbone C of the vehicle framing and may conveniently
be made with sheet iron laminae for the armature and for the field magnets the latter
being jointed at the top for convenience of winding. The motor spindle is provided
with endless screw or worm which gears with a worm wheel R on the axle B; this
wheel may be fast thereon or it may be loose and in that case have a catch or
pawl pivoted thereto, such pawl being capable of engaging with a pawl wheel fixed
on the axle, all in such manner that when the motor is stopped, or when the carraige,
for instance in running downhill overruns the motor, the ratchet wheel teeth run
freely over without engaging with the pawl. The advantage of such an arrangement
is that when no auxiliary power is required to assist the mans power the motor and
its connections may be still while the carraige is running. Instead of ratchet and
pawl gear we may use any suitable ball clutch arrangement such as are generally
used in tricycles. One of the wires from the battery to the motor is carried to the
brake-handle V which has a contact V₁ whose two adjoining parts or ends normally
gear or clutch into each other, being by preference formed with teeth as seen in the
end view figure 1A but are drawn apart when the handle V is grasped for the purpose
of braking.
The consequence of this arrangement is that when the brake is put on the circuit is
broken and vice versu.
In figure 3 the battery is carried from the front axle of a fourwheeler. The
brake contact is similar to that described. The motor transmits motion to the
hind axle by spur pinion and spur wheel, or by Robertson's or other suitable
friction gear.
Figure 4 shows a tricycle with the battery arranged over the axle, the motor
being below it, and transmitting motion thereto by pinion and internal spur
wheel, or Robertson's or other frictional internal gear, or it may be by bevel whicel
gear.
In figure 5 the motor is fixed to the steering handle F of the fork D to turn
therewith. The motor transmits motion to wormwheel on the centre of the front
wheel E.
The angle of the motor spindle relatively to the vertical or horizontal may be
varied. The position of the battery may also be varied as required according to the
construction of the velocipede.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed we declare that what
we claim is :-
The adaptations of velocipedes for being driven from primary battery and
electro-motor by wheel gearing as described with reference to the accompanying
drawings.