Improvements in and relating to the Driving Gear of Cycles.
Year: 1898

page_text: Improvements in and relating to the Driving Gear of Cycles.
We, WILLIAM HENRI LUTIDER, Manufacturer, of Petershill Road, in the
County of the City of Glasgow, and JAMES COCKBURN, Engineer, of the same
address, do hereby declare the nature of our invention to be as follows:-
This invention has reference to improvements in and relating to the driving
gear of cycles, and whereby the bottom or central bracket and chain are dispensed
with.
As applied to a bicycle according to our improvements we fit longitudinal
frames on each side with forked end extensions, and at the rear tread wheel we
fit a transverse stay tube, which is rigidly secured to the side frames. Within
this tube we, fit a central spindle to rotate on ball bearings in recesses between
it and ends (of tube. The hub of rear tread wheel is mounted annularly round
the central stay tube, and works on ball bearings fitted in recesses formed between
the ends of hub and stay tube.
The ends of the transverse driving spindle are fitted with cranks having
kneed arms or crank pins on their outer ends which are connected to the upper
ends of links. The lower ends of these links are secured to or formed on levers
which are fitted with foot pedals or treadles at their front end, and at their rear
end are connected to the lower ends of swinging links which are secured at their
upper ends on projecting pins secured to the side frames of machine, and by this
means an elliptical motion of the foot tread is obtained. Instead of the rear
ends of the levers being connected to swinging links, they may be curved upwards
and be fitted with fulcrum pins and rollers which would work in guides in the
side frames.
By an alternative arrangement the kneed arms or pins on the cranks of trans-
verse spindle would work in longitudinal slots formed in treadle driving levers,
and these crank pins are fitted with rollers working on hall hearings at the parts
engaging within the slots. These treadle levers are fitted with suitable toe clips
at their front end, and at their rear end are fulcrumed in slots formed in the
rear forked ends of side frames. so that the leverage can be adjusted to suit
different parties or conditions of drive.
A mounting sten or projection would be formed or fitted on one of the treadle
levers for the rider's foot to bear on in starting the mechanism.
A. spur or toothed wheel is mounted at the one end of the transverse treadle
spindle, and gears into a pinion mounted on a stud spindle carried in ball bear-
ings in the side frames of machine. A spur wheel is mounted on the opposite
end of stud spindle and gears into a pinion screwed or mounted on the hub of
rear tread wheel. Instead of the stud spindle being carried on the side frames
it may be mounted on the back stay rod of machine.
Instead of spur or toothed gearing friction or like gear may be substituted.
Instead of having cranks and crank pins on both ends of transverse spindle the

page_text: lever may be connected direct on the one side to a pin on the first rotating spur
wheel mounted on hub spindle.
1000
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.
Improvements in and relating to the Driving Gear of Cycles.
We, WILLIAM HENRI LUTIDER, Manufacturer, of Petershill Road, in the
County of the City of Glasgow, and JAMES COCKBURN, Engineer, of the same
address, do hereby declare the nature of our invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement, that is to say:-
:-
This invention has reference to improvements in and relating to the driving
gear of cycles, and whereby the bottom or central bracket and chain are dispensed
with.
And in order that our said invention and the manner of carrying same into
practice may be properly understood, we have hercunto appended a sheet of
explanatory drawings in which the same reference letters are used to indicate
corresponding parts in the several figures where shown. Figure 1 is an elevation
of a bicycle showing our improved driving gear applied thereto. Figure 2 is a
detached plan view showing the rear wheel and driving gear, and Figure 3 is a
detached horizontal section showing the wheel gearing and hub of rear wheel,
while Figures 4 and 5 are detached broken away views of modified details.
Referring to these drawings according to our improvements we fit longitudinal
frames A on each side with forked end extensions A' and at the rear tread wheel
we fit a transverse stay tube a which is rigidly secured to the side frames A.
Within this tube a we fit a central spindle a¹ to rotate on ball bearings a² in
recesses between it and ends of tube a. The hub b of rear tread wheel is mounted
annularly round the central stay tube a and works on ball bearings 61 fitted in
recesses formed between the ends of hub b and stay tube a.
The ends of the transverse driving spindle a are fitted with cranks c having
kneed arms or crank pins c¹ on their outer ends which are connected to the upper
ends of links d. The lower ends of these links are secured to or formed on
levers which are fitted with foot pedals or treadles 2 at their front end, and at
their rear end are connected to the lower ends of swinging links e which are
secured at their upper ends on projecting pins el secured to the side frames A of
machine, and by this means an elliptical motion of the foot tread is obtained.
Instead of the rear ends of the levers being connected to swinging links e they
may as shown in Figure 4 be curved upwards and be fitted with fulcrum pins f
and rollers f¹ which would work in guides f2 in the side frames A.
C
By an alternative arrangement as shown in Figure 5 the kneed arms or pins c¹
on the cranks of transverse spindle a¹ would work in longitudinal slots formed
in treadle driving levers and these crank pins care fitted with rollers work-
ing on ball bearings at the parts engaging within the slots d³. These treadle
levers are fitted with suitable pedals at their front end 2 and at their rear end
are fulcrumed in slots A2 formed in the rear forked ends of side frames A, so
that the leverage can be adjusted to suit different parties or conditions of drive.
An ordinary mounting step or projection would he formed or fitted at on
one of the treadle levers for the rider's foot to bear on in starting the
mechanism.

page_text: A spur or toothed wheel g is mounted at the one end of the transverse treadle
spindle a and gears into a pinion gl mounted on a stud spindle g³ carried in ball
bearings g³ in the side frames of machine. A spur wheel h is mounted on the
opposite end of stud spindle g2 and gears into a pinion h¹ screwed or mounted on
the hub b of rear tread wheel. Instead of the stud spindle being carried on the
side frames it may be mounted on the back stay rod of machine.
Instead of spur or toothed gearing friction or like gear may be substituted.
Instead of having cranks and crank pins on both ends of transverse spindle the
lever may be connected direct on the one side to a pin on the first rotating spur
wheel mounted on hub spindle.
Having now particularly described and ascertained the nature of our said in-
vention and in what manner the same is to be performed we declare that what
we claim is: -
First. The arrangements in combination of the parts and accessories of a driv-
ing gear for cycles, substantially as herein described in reference to and shown
in the accompanying drawings.
Second. In a driving gear for cycles the arrangements of treadle levers and
coupling connections substantially as herein described in reference to and shown
in the accompanying drawings.
Third. In a driving gear for cycles, the arrangement of transvese stay tube
and fittings, substantially as herein described in reference to and shown in the
accompanying drawings.
1
1000
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.