Driving Gear for Convertible and other Cycles and Motor Cars.
Year: 1897

page_text: Date of Application, 27th Apr., 1897
Complete Specification Left, 15th Jan., 1898-Accepted, 27th Apr., 1898
PROVISIONAL SPECIFICATION.
Driving Gear for Convertible and other Cycles and Motor Cars.
I, CHARLES POWELL, of 75, Wiltshire Road, Brixton, London, S.W., Madras
Civil Service retired, present address C. Powell, Netherbury, Beaminster, Dorset,
do hereby declare the nature of this invention to be as follows:-
--
The gear called herein driving gear for convertible and other cycles: and motor cars
consists of 2 cog wheels, a small one with teeth outwards from the rim operated on by
a larger one with teeth inwards from the rim so placed as to engage the teeth or cogs
on the small wheel. The small cog wheel is secured on or is part of the hub or
axle of the cycle driving wheel or wheels. The large cog wheel is moved either by,
a pedal crank secured to it or by power communicated to it from another wheel
though a chain, band, wire rope, or the like, and applied by a rider, passenger, or
motor engine, or by a combination of either or all. This driving gear may ba
applied from various positions on cycles, and on one or both sides of, or between,
cycle wheels also to various forms of cycles, whether rear or front-driving.
Driving Gear for Convertible and other cycles and motor Cars.
I, CHARLES POWELL, c/o Messrs. Wm. Hutchinson & Co., Trafalgar Buildings,
Charing Cross, of 75, Wiltshire Road, Brixton, Indian Civil Service, retired Madras,
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:-
(FIGS. 1, 2, 3, 4.)
1. On the hub B or axle (ordinarily one end) of the driving wheel or wheels of
a cycle or motor car, construct or secure a small cog wheel D with outward teeth,
of any suitable diameter, pitch, and number of teeth, according to gear or power
required, and also according to the plan or build of the cycle or motor car. This
small cog wheel may be cut as part of the hub or axle, or shrunk on, or
otherwise secured thereto, according to position on axle or hub, and according to the
build of the cycle or motor car. The small cog wheel is to be operated on by a
larger cog wheel with inward teeth, E cut to engage the teeth of the small cog,
and may be of any suitable diameter, pitch, or number of teeth, according to gear
or power required, and according to design of the cycle or motor car.

page_text: 2. This larger cog wheel is made with a boss or spindle in the centre, from which
rise arms to carry the rim, made with a shoulder, inside of which, are the inward
teeth to engage the outward teeth of the small cog. The shoulder must be deep
enough to allow of the arms clearing any projection of the small cog wheel,
hub, spindle, nuts C, frame, lugs A, or any contiguous part of the cycle or motor
car. This cog wheel may be stamped, forged or cast, in one piece and the teeth,
arms, and other parts cut out, or the wheel and certain parts may be cut out
or made in one part, and shrunk on or secured to a rim or shoulder with the teeth
ready cut in it. On the outside of the rim of this big cog wheel, is secured a band
with sprockets, for a chain, or one with a smooth or other suitable surface, for a
belt, or one with a groove for a wire or other rope, às circumstances and construction
of the cycle or motor car require, or the wheel may be made in one piece and any of
such rims be formed on it, or made afterwards and secured to it.
3. The spindle of the big cog wheel is carried (ordinarily for a safety cycle) on
split horizontal lugs A between the back hub, and pedal crank bracket, in bearings
similar to cycle hub bearings fitted thereon. The position of this spindle depends on
the form of the cycle or motor car and on the position and design of frames and lugs.
It may be placed in any position the construction of the cycle or motor car requires,
and where bearings for it can be most advantageously and securely fitted.
4. The vertical lug A to secure the back stays of a safety cycle to, is also split, to
allow the big cog wheel to work between the parts. These split horizontal and
vertical lugs are stamped or forged in one piece the inside part of which is fitted
on the spindle or the hub of the driving wheel under the nut C in the usual or any
other suitable way. These lugs are split far enough to allow of the big cog wheel
working clear between them, beyond that they are closed and form each one piece
to join the tubes of the cycle vertical and horizontal stays, into which, they are
fitted and secured. The back inside and outside parts of the lugs, are extended
beyond the rim of the big cog wheel and are also joined at the back of it; the whole
viz. the inner and outward parts of the ingeforming one niece. forged
stamped or fitted as required.
5. A sprocket or other wheel or wheels, is fitted in the bottom or other bracket
or brackets. The chain, belt, band or rope is secured over that wheel and over the
above mentioned big cog wheel. To the bottom bracket wheel or other wheel or
wheels the pedal or other crank or cranks are secured, and thus power is com-
municated to the big cog wheel or wheels; thence to the small cog wheel or wheels,
and thence to the cycle or motor car driving wheel or wheels. Power for the same
purpose may also be communicated from the pedal or other crank wheel or wheels,
in the bottom or other brackets of the cycle or motor car by fitting eccentric rods on
both wheels to connect them, instead of chains, belts or ropes, and thus uniting their
movements.
(FIG. 5.)
6. Another mode of applying this driving gear is as follows viz.:-On one end of
a barrel hub D of the cycle or motor car driving wheel or wheels, construct or secure
a cog wheel with outward teeth C on the spindle E of that hub or hubs at either
end, fit lugs G each made of one piece of metal to carry the vertical and horizontal
stays of the cycle or motor car frame as well as a larger cog (F) wheel spindle A
which passes through the lugs, and also through the hub D or hubs. These lugs
which are substantial enough to carry cones with bearings for the big cog wheel
spindle are fitted and secured on the ends of the spindle or spindles of the cycle
or motor car driving wheel or wheels on either side of them. The spindle of the
big cog wheel (with inward teeth made with a shoulder to engage the outward teeth
of the small cog) passes through bearings fitted in the lugs, also inside of the rim of
small cog close to the inside surface of the barrel hub D and right through it. On
either ends of this spindle or spindles are secured the pedal B or other cranks which
turn the big cog wheel F or wheels and thus give the motive power to the driving

page_text: wheel or wheels of the cycle or motor car.
The distance between the centres of the
large and small cog wheels determine the gear obtainable.
7. Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
-
1. Novelty in adapting this cog wheel gear to cycle or motor car driving wheels
either by means of a chain, belt, wire, other rope or eccentric rods from the pedal,
or other crank wheel or wheels; or by direct action from the pedal or other cranka
secured to the big cog wheel, without the aid of a chain, belt, rope, rods, or the like.
2. Novelty in the manner of applying the gear to cycle or motor car driving,
wheels.
Dated this manter first day of Moh 1900