Improvements in Driving Mechanism for Velocipedes, more particularly applicable to what are known as Geared Ordinaries.
Year: 1892

page_text: Date of Application, 1st Sept., 1892
Complete Specification Left, 31st May, 1893—Accepted, 15th July, 1893
PROVISIONAL SPECIFICATION.
Improvements in Driving Mechanism for Velocipedes, more
particularly applicable to what are known as Geared
Ordinaries.
I, JULES LECLERC of Troo in the Department of Loir et Cher, France, Wine
Grower, do hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in driving mechanism for velocipedes of
all kinds, but is more particularly intended to be applied to what are known as
geared ordinaries.
on
Briefly the invention consists in applying at the extremities of the forks of a
geared ordinary for example eccentrically arranged rings, a pair being placed on
each side. Inside these rings rotates the axis or spindle of the driving wheel:
the ends of this spindle are keyed or otherwise fixed pinions which are driven by
internal gear teeth upon one of the rings. On the inner periphery of the geared
ring, and on the outer periphery of the second which is a supporting ring, are
formed adjustable races for antifriction balls. By this construction the pinions are
driven at a speed corresponding to the ratio established between the number of
teeth of the geared rings and the number of teeth of the pinions when the geared
rings are revolved, and for this purpose the geared rings carry projections, in the
ends of which work the pivots of roller slides through which reciprocate the
cranks which are mounted on ball pivots carried in any suitable manner in forward
projections of the forks.
Dated the 1st day of September 1892.
PHILIP M. JUSTICE, Fel. Chart. P.A.,
55 & 56, Chancery Lane, London, Agent for the Applicant.
COMPLETE SPECIFICATION..
Improvements in Driving Mechanism for Velocipedes, more
particularly applicable to what are known as Geared
Ordinaries.
I, JULES LECLERC of Troo, in the Department of Loir et Cher, France, Wine
Grower, 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 improvements in driving mechanisin for velocipedes of
all kinds, but is more particularly intended to be applied to what are known as
geared ordinaries, and it is illustrated in connection with such a machine in the
accompanying drawing in which
Figure 1 is a side elevation partly in section of the improved mechanism and part
of a wheel, and Figure 2 is a cross section of same on the line aa, Figure 1, with
the addition of a dust plate hereinafter referred to.
In the drawing one set of the mechanism only is shown but it is desirable and
intended to have a similar set on the other side of the wheel.
A represents one arm of the fork to the lower end of which may be applied the
customary ball bearings in which revolves the spindle K of the driving wheel E
such spindle passing inside of a pair of eccentrically arranged rings C, D. On the
end of the spindle is keyed or otherwise fixed a pinion B which is driven by
internal gear teeth formed on the ring D. Partly on the inner periphery of this
ring D and partly on the inner periphery of an adjusting ring d (which is provided

page_text: with a milled or notched edge) is formed a semicircular ball race c, while on the
outer periphery of the ring C is formed a corresponding semicircular race, the two
being adapted to receive the anti-friction balls b as shown. The ring C is fixed or
secured by screwing or otherwise to some suitable part of the fork A, while secured
to or forming part of the ring D which is a movable one is a crank D¹ adapted to
carry the usual pedal. By operating the pedal and so revolving the ring D the
latter will through its internal gear teeth revolve the pinion B at a speed
corresponding to the ratio established between the number of teeth on the geared
ring and the number of teeth on the pinion. To protect the gears from dust a thin
cover plate F is arranged to fit into a groove f on the face of the ring D.
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. Driving mechanism for velocipedes more particularly applicable to what are
known as geared ordinaries comprising a pinion on the wheel spindle, an
eccentrically arranged ring having internal gear teeth, a crank operating said ring,.
a second ring on which the first revolves, and anti-friction balls placed between the
two rings, substantially as described.
2. The improvements in driving mechanism for velocipedes, more particularly
applicable to what are known as geared ordinaries, substantially as described and
illustrated.
Dated this 31ot do of Man 1009
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, London,
Chartered Patent Agent for the Applicant.
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, London,
Chartered Patent Agent for the Applicant.