Improved Driving Gear for Velocipedes.
Year: 1892

page_text: Date of Application, 4th Jan., 1892
Complete Specification Left, 4th Nov., 1892-Accepted, 4th Feb., 1893
PROVISIONAL SPECIFICATION.
Improved Driving Gear for Velocipedes.
JOHN ALBERT SCORE 42 Methley Street, Kennington Park Road, Lambeth
Surrey, Engineer, and ALEXANDER MACBETH, RICHARD STEVENS PHILLIPS
and PERCY STANLEY TAVENER, The Arches York Terrace Clapham Road
Lambeth, Surrey, Cycle Makers, do hereby declare the nature of this invention to
be as follows:-
A means of giving a greater number of revolutions of the driving wheel to that
of the crank used to propel the velocipede or bicycle. The hub of the driving
wheel to be hollow throughout and to turn on bearings at each side of dimensions
that will allow of the spindle to which the cranks are attached to pass through but
out of the centre of the hub more or less as may be required by the amount of
gearing used.
The hub to turn or run on bearings connected to the fork or frame of the
velocipede or bicycle.
The bearings so constructed that the spindle may also turn and work in or on
another part of the same bearing, but out of the centre with the bearing used for
the hub. The hub to have a toothed wheel fitted on one side to engage and work
inside another toothed wheel of larger dimensions with internal teeth and fitted to
the spindle.
The bearings to be attached to the ends of the fork, shaped and curved to pass
through the space left by the different diameters of the cog wheels where they
are not in play or contact with each other and terminating in two bearings one for
the hub to work on, and the other to carry the before mentioned spindle more or
less out of the centre with the hub.
Dated this 4th day of January 1892.
JOHN ALBERT SCORE.
ALEXANDER MACBETH.
PERCY S. TAVENER.
RICHARD S. PHILLIPS.
COMPLETE SPECIFICATION.
Improved Driving Gear for Velocipedes.
We, JOHN ALBERT SCORE, of No. 42, Methley Street, Kennington Park Road,
Lambeth, Engineer, ALEXANDER MACBETH, RICHARD STEVENS PHILLIPS and
PERCY STANLEY TAVENER, of The Arches, York Terrace, Clapham Road,
Lambeth aforesaid, Cycle Makers, all in the County of Surrey, 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 :-
The invention relates to improvements in driving gear for velocipedes, and the
object of it is to provide for the driving wheel making a greater number of
revolutions per minute than do the cranks.
In order that the invention and the means by which it is to be carried into
practical effect may be thoroughly understood, we will now describe it and them
in detail, referring in so doing to the accompanying figures which are to be taken
as part of this Specification and read therewith.
Fig. 1 is a rear elevation of the hub of a driving wheel to which our invention
has been applied.
Fig. 2 is a side elevation of the off side of the same after the removal of the
spur driver of the driving gear.

page_text: :
Fig. 3 is a plan taken on the line 3-3 of Figs. 1 and 2.
Fig. 4 is a vertical section along the line 4-4 of Fig. 3.
a is the axle of the driving, as well as of the spur, wheel or driver of the driving
gear described further on.
bis the hub. It is necessarily tubular to allow of the axle a being passed
through it, and of a suitable diameter to provide for it and the pinion of the
driving gear being rigidly fixed together. Both ends of the hub are socketted, i.e.,
are made as cup bearings provided with ball races c, c'. d is a cone bearing. It
enters one of the socketted ends of the hub thereby closing it and completing the
race c. On the outer face of the cone bearing d, there is formed a cup bearing e.
This bearing is eccentric with reference to the axis of the hub when the latter is of
a larger diameter, as it is shewn to be in the figures. It is closed by a cup
bearing e which enters it. There is a ball race between them. The axle has
formed upon it a screw a¹ upon which the cup bearing can be moved up to the hub.
This capacity
on the part of the cup bearing e¹ of being moved up along the
screw a is used for taking up wear in all the bearings. f is a lock nut for
holding the said bearing up.
is the spur driver of the driving gear. It is closed on the outside by a disc g¹
by means of which it is made fast to the axle a, and when the latter is the crank
axle, the wheel is geared internally. his the spur pinion of the driving gear. It
is supported in its operative position, which is that of being driven by the wheel g,
by being fast upon the adjacent socketted end of the hub b with which end it is
flush. Both hub and pinion are concentric, but the pinion is necessarily eccentric
with reference to the axle a. j is a cone bearing. It enters the socketted end
of the hub and completes the ball race c. On the outer face of this cone
bearing, there is formed a cup bearing k for the axle a. It is completed by a
ring which is fast on the axle a.
It will be noticed that the ball races c c¹, i.e., the bearings for the hub, are
concentric with the pinion h, while those of the axle a are concentric with the
spur driver g.
The plates of the cone bearings d and j are both bored out concentrically with
the axle a to allow it to rotate clear of them.
m, m are the spoke flanges. n, n¹ are the lugs to which the fork is fastened.
These stand to the rear of a vertical plane passing through the axis of the
axle a, and are both made fast to the respective plates in which are formed
the hub and axle bearings. The off side lug n', i.e., the one on the same side as the
driving gear, is cranked so as to stand in the cresent shaped space between the
spur driver g and the pinion h, and then cranked a second time between the pinion h
and the disc g', so as to reach its plate.
The ratio of the spur driver to the pinion may be modified as may be desired.
If the driving gear is not on the crank axle, the spur driver is externally geared.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed we declare that what we
claim is :-
―:
1. The combination of hub and hub bearings formed one in the face of a plate
fast to the respective prong of the fork and the other in a corresponding plate at
the opposite end of the hub to which the respective prong of the fork is led through
the crescent shaped space and between pinion and disc, as set forth.
2. The combination of spur driver, pinion and two sets of bearings, as set forth.
3. The combination of cone bearing, plate and cup bearing with each end of the
hub, as set forth.
11'
1
2
זי
PHILLIPS & LEIGH,
No. 22, Southampton Buildings, Chancery Lane, W.C.,
Agents for the Applicants.