Improvements in Gearing for Transmitting Rotary Motion, especially applicable to Velocipedes and Self-propelling Vehicles.
Year: 1896

page_text: Date of Application, 15th Jan., 1896-Accepted, 22nd Feb., 1896
COMPLETE SPECIFICATION.
[Communicated from abroad by CHARLES TERROT, of 19, Rue Cambon, Paris,
in the French Republic, Engineer.]
Improvements in Gearing for Transmitting Rotary Motion, especially
applicable to Velocipedes and Self-propelling Vehicles.
I, WILLIAM GEORGE HEYS of 70 Market Street Manchester in the County of
Lancaster, Chartered Patent Agent, 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 gearing for transmitting rotary motion, and especially
to such gearing as used in velocipedes and auto-mobile road vehicles, and its object
is to substitute for the ordinary friction of sliding or rubbing contacts, the less
friction of rolling contacts.
The essential element of this invention is a friction roller wheel, constructed as
hereinafter described, which may gear with a smooth toothed pinion.
The accompanying drawings illustrate this invention and are hereinafter
referred to.
Figure 1 illustrates in elevation the improved friction roller wheel and a pinion.
which may be used with it.
A is the wheel formed or provided with two annular projections or flanges
between which is mounted a series of bowls or rollers C the axes of which are radial
to the wheel. These bowls are preferably formed cylindrical, with rounded ends to
reduce their friction against the flanges or projections between which they are
mounted.
Figure 2 represents the application of the gearing to a bicycle or similar
machine.
The friction wheel A is mounted upon the crank axle and is rotated by means of
cranks R and pedals in the usual manner. It gears with the pinion D which is
secured to a rod or tube E suitably mounted so as to be capable of free rotation.
The other end of the tube E carries a wheel G of similar construction to the
wheel A. The wheel G engages by its friction bowls C with the teeth on another
wheel H which is secured to the hub M of the driving wheel of the vehicle. P is
the usual crank bracket of the machine. Another view of the back wheel gearing.
is shewn in Figure 3.
The fixed teeth of the pinions or wheels D and H are shaped according to the
angle at which they are geared.
If desired the wheels may be protected by casings or covers.
It will of course be evident that the positions of the wheels may be changed and
that the driven wheel in each case may be furnished with friction rollers or bowls.
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. In gearing for transmitting rotary motion, a wheel provided with teeth
equivalents consisting of friction bowls or rollers constructed and arranged.

page_text: substantially as and for the purpose hereinbefore described and as illustrated by
the accompanying drawings.
2. Gearing for transmitting rotary motion, constructed and arranged substantially
as hereinbefore described and as illustrated by the accompanying drawings.
Dated this 14th day of January A.D. 1896.
WILLIAM GEO. HEYS.