Improvements in and relating to Velocipedes.
Year: 1892

page_text: Date of Application, 15th Dec., 1892
Complete Specification Left, 11th Sept., 1893—Accepted, 14th Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in and relating to Velocipedes.
We GEORGE LEONARD MORRIS, of 15 Wells Street, Grays Inn Road,
London, in the County of Middlesex, Cycle Manufacturer, NATHANIEL HENRY
STRICKLAND, of 7 Granville Square, Kings Cross, London, in the County
aforesaid, Cycle Manufacturer, and GEORGE TURNER, of 219 Ivydale Road,
Waverley Park, Nunhead, in the County of Kent, Engineer, do hereby declare
the nature of this invention to be as follows:-
Our invention relates to an improved form of gear for imparting a speed of
rotation to the driving wheel of a bicycle superior to that of the driving axle, and
it has for its object, centralizing the driving strain, and preventing torsion of the
bearings.
According to our invention we fix at or about the centre of the driving axle a
disc carrying an internal ring of teeth forming the driving spur wheel and on each
side of this wheel we fix on the axle a cone. Over the axle outside these cones are
placed sleeves having cups at their inner ends forming with the cones hereinbefore
referred to races for ball bearings. On the ends of these sleeves are fixed cones
adapted with cups formed or fixed in the hub of the wheel, to form races for the
ball bearings on which the driving wheel revolves. On the ends of the sleeves
outside these cones are screwed cups for the ball bearings adapted to support with
the ball bearings at the inner ends of the sleeves hereinbefore referred to, the
driving axle, the said cups being clamped to or by the ends of the fork or frame in
any suitable manner. On the ends of the driving axle are screwed cones adapted
with the aforementioned cups to complete the outer ball bearings for the said axle.
The cup forming the bearing case for the driving axle ball bearing on that side of
the hub adapted to receive the gear may be formed in one piece with the cone
forming part of the bearing supporting the hub of the driving wheel. On the
inner end of the sleeve surrounding the driving axle on this side of the driving spur
wheel fixed to the axle is formed or fixed an eccentric disc having a circular groove
n its periphery forming part of a race for a ball bearing on which is mounted a
ring or strap carrying an external ring of teeth which gear with the internal teeth
of the driving internal spur wheel fixed to the axle, the said ring or strap being
provided with adjustable cones to complete the race for the ball bearing and provide
for the adjustment of the said bearing after wear. Formed on or fixed to this ring
or strap is a ring or strap having an internal ring of teeth which gear with a spur
pinion fixed to an inwardly projecting flange carried by a plate forming the side of
the hub of the driving wheel, and fixed thereto in any suitable manner, the said hub
of the wheel being shaped to enclose the said gear. By varying the number of
teeth in the compound spur wheel with internal and external teeth and in the spur
pinion the speed of rotation of the driving wheel with respect to the driving axle is
readily varied.
By this construction of gear the driving power is centralized within the wheel
and between the bearings, while the peculiar construction of bearings within the
hub of the wheel ties the ends of the forks or frame carrying the driving axle
together and so prevents undue torsional strain thereon.
Deted this 15th day of December 1900
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicants.

page_text: .
COMPLETE SPECIFICATION.
Improvements in and relating to Velocipedes.
We GEORGE LEONARD MORRIS, of 15 Wells Street, Grays Inn Road,
London, in the County of Middlesex, Cycle Manufacturer, NATHANIEL HENRY
STRICKLAND, of 7 Granville Square, Kings Cross, London, in the County
aforesaid, Cycle Manufacturer, and GEORGE TURNER of 219 Ivydale Road,
Waverley Park, Nunhead, in the County of Kent, Engineer, 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 :-
Our invention relates to an improved form of gear for imparting a speed of
rotation to the driving wheel of a bicycle superior to that of the driving axle, and
it has for its object, centralizing the driving strain, and preventing torsion of the
bearings.
We attain this end in the manner shown in the accompanying drawing, which is
a view in sectional elevation of our improved gear.
At or about the centre of the driving axle A is fixed a disc B carrying an
internal ring of teeth forming the driving spur wheel C, and on each side of this
wheel we fix on the axle A a cone a. As an alternative construction the cones a, a,
may be formed on or fixed to the disc B. Over the axle A outside the cones a, a,
are placed sleeves D and D' each having cups d, d formed on or fixed to their inner
ends, forming with the cones a, a, races for the balls x, x, etc. On the other ends
of the sleeves D, D¹, are mounted cups d', d', adapted with the adjustable
cones a', a', on the ends of the driving axle A to form races for the balls, a, etc.
The cups d', d', fit in and are clamped to sockets E, E, carried by the ends of the
fork or frame Y of the machine. The balls x, x, etc. and the races in which they
run form the ball bearings in which the driving axle runs. On the sleeves Ď
and D' inside the cones d', d', are screwed cones d², d2, adapted with the cups ff,
mounted in the hub F of the wheel to form races for the balls ', a', etc. constituting
the ball bearings on which the driving wheel rotates. The cone on the sleeve D₁
is adjustable thereon to provide for the adjustment of the bearings on which the
driving wheel runs, but the other cone may for convenience be made in one piece
with the cup d', on the sleeve D.
The hub F of the wheel is shaped to enclose the gear, carries suitable flanges to
receive the spokes, and it has its side adjacent to the said gear closed by a plate F
which carries the cupf on that side of the hub. On the inner end of the sleeve D
is formed or fixed an eccentric disc G on which is mounted to rotate thereon a
double spur pinion H, H', a suitable ball bearing being made between the two parts.
One part H of the double spur pinion has external teeth which gear with the teeth
of the driving spur wheel C fixed on to the axle A and the other part H of the
double spur pinion has internal teeth which gear with a spur pinion J fixed to an
inwardly projecting flange F* carried by the plate F forming the one side of the
bub F of the driving wheel.
By varying the number of teeth in the compound spur wheel and in the spur
pinion carried by the hub the speed of rotation of the driving wheel with respect to
the driving axle may be readily varied. By this construction of gear the driving
power is centralized within the hub of the wheel and between the bearings, while
the arrangement of the bearings within the hub of the wheel ties the ends of
the fork or frame carrying the driving axle together and so prevents torsional
strain thereon.
We wish it to be particularly understood that we do not limit ourselves to the
precise details of construction hereinbefore described and illustrated by the accom
panying drawing but that we hold ourselves at liberty to make such changes and
alterations as fairly fall within the spirit and scope of our invention..

page_text: 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 :-
The hereinbefore described combination of parts constituting a new and improved
gear for imparting to the driving wheel of a velocipede a speed of rotation superior
to that of the driving axle thereof.
11
1
11902
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicants.