A New or Improved Speeding Gear for Velocipedes.
Year: 1893

page_text: Date of Application, 13th Jan., 1893
Complete Specification Left, 19th July, 1893-Accepted, 6th Jan., 1894
PROVISIONAL SPECIFICATION.
A New or Improved Speeding Gear for Velocipedes.
We, WILLIAM JAMES FREEMAN, and EDWIN FREEMAN, both of 99 York
Road, Battersea, in the County of Surrey, Sanitary Engineers, do hereby declare
the nature of this invention to be as follows:-
The object of this invention is the construction of a simple and effective driving
and speeding gear for bicycles and other velocipedes such gear being especially
applicable to those bicycles known as "front driving safeties."
Now according to this invention we affix to the front or steering fork, or other
suitable portion of the frame, an internal toothed wheel and in the hub or boss of
the driving wheel we fix a second internal toothed wheel of a greater diameter than
that attached to the fork.
The hub or boss of the driving wheel is not secured to the pedal axle but is
supported by suitable ball or other bearings preferably clear of the said axle.
To the pedal axle we secure a boss having two side flanges and one centre flange.
We provide also two or more spur pinions symmetrically disposed round the said
axle gearing into the internal toothed wheel attached to the fork, these pinions
rotate on pins riveted or otherwise fastened into the side flanges of the boss
attached to pedal axle, the centre flange being cut away to allow the said pinions
to rotate.
The motion of these pinions is communicated to the internal toothed wheel on
the hub by means of idle pinions rotating on pins secured to the centre flange and
one of the side flanges of the said boss.
Dated this 12th day of Janu 1892
FREDK. WALKER,
11, Furnival Street, Holborn, London, E.C.,
Agent for the Applicants.
A New or Improved Speeding Gear for velocipedes.
We, WILLIAM JAMES FREEMAN, and EDWIN FREEMAN, both of 99 York,
Road, Battersea, in the County of Surrey, Sanitary Engineers, 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 object of this invention is the construction of a simple and effective driving
and speeding gear for bicycles and, other velocipedes such gear being especially
applicable to those bicycles known as "front driving safeties.'
Now according to this invention we affix to the front (or steering) fork or other
suitable portion of the frame of the machine an internal toothed wheel and in the
hub or nave of the driving wheel we form or fix a second internal toothed wheel of
a greater diameter than that attached to the fork.
The hub or nave of the driving wheel is not secured to the crank axle but is
supported by suitable ball or other bearings and preferably clear of the said axle
to which we secure a boss having three flanges thereon one at each side and one in
the middle thereof.

page_text: We provide also two or more spur pinions symmetrically disposed round the
said axle and gearing into the internal toothed wheel attached to the fork the said
pinions rotating on pins riveted or otherwise fastened into the side flanges of the
boss which is attached to the crank axle the centre flange being cut away to allow
the said pinions to rotate.
.
The motion of these pinions is communicated to the internal toothed wheel on
the hub by means of idle pinions rotating on pins secured to the centre flange and
also to one of the side flanges on the aforesaid boss.
And in order that our said invention may be fully understood we will proceed
to explain the same with reference to the accompanying sheets of drawings in
which-
Figure 1 represents section through the hub of a bicycle wheel fitted with
speeding gear constructed according to this invention.
Figure 2 is side view of the same partly in section.
Figure 3 is section through the boss which is attached to the crank axle.
Figure 4 is side view of same.
The same letters denote the same parts in all the figures.
a is the fork to which is secured by screws bb the annular wheel c gearing with
the pinions d d which rotate on pins e e secured to the side flanges ff of the boss g
which is secured by brazing or otherwise to the crank axle h.
11
Gearing with the pinions d d are idle pinions i i which rotate on pins k k which
are riveted or otherwise fastened into the flanges f1f" of the boss g, these
pinions in their turn gear with the internal toothed wheel 7 which is attached to or
forms part of the hub m of the driving wheel.
The hub m rotates in a bearing formed by a hardened steel collar n secured to
the crank axle and the hardened steel bush o secured in the hub balls
p
being
interposed between the said collar and bush in the usual way the part m of the
hub m being bored slightly larger than the axle to allow the same to rotate
freely therein.
The crank axle rotates in ordinary bearings fitted with balls or otherwise in
Figure 1 the said axle is shewn fitted with a hardened steel collar q rotating in an
ordinary ball bearing. r is a groove formed in the wheel e to receive a ring of
cotton asbestos rubber or other suitable material to keep out dust.
The centre flange fll of the boss g is cut away at x as shewn in Figures 4 and 5
to make room for the pinions d d.
Although we have shewn the smaller of the internal toothed wheels attached to
the fork we do not bind ourselves to make our gear in this way as the wheels c
and may be of equal diameters or the wheel c may be of greater diameter than the
wheel l.
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 :-
In a speeding gear for velocipedes the combination of a flanged boss secured to
the crank axle having two or more pinions rotating on pins secured to the flanges
on the said boss with two internal toothed wheels gearing with the said pinions one
of which wheels is secured to the steering fork or other convenient portion of the
frame of the machine and the other to the hub of the driving wheel substantially as
herein before described and shewn by the accompanying drawings.
•
FREDK. WALKER,
11, Furnival Street, Holborn, London, E.C.,
Agent for the Applicants.
FREDK. WALKER,
11, Furnival Street, Holborn, London, E.C.,
Agent for the Applicants.