An Apparatus for Increasing the Speed of Cycles, and other Velocipedes for Level Roads, and of Increasing the Power for Hill Climbing.
Year: 1897

page_text: Date of Application, 4th Jan., 1897
Complete Specification Left, 13th Sept., 1897-Accepted, 24th Dec., 1897
PROVISIONAL SPECIFICATION.
"An Apparatus for Increasing the Speed of Cycles, and other
Velocipedes for Level Roads, and of Increasing the Power for
Hill Climbing.'
"
ROBERT HENRY TAYLOR Civil and Mechanical Engineer, Garfield Lodge, Stoke,
Devonport and GEORGE, HALL, SCOTT Civil Engineer-1, Dunkeld Villas, Ford
Park Plymouth both in the County of Devonshire do hereby declare the nature of
this invention to be as follows:-
In this arrangement of gearing to produce increased speed, we make the
ordinary large chain driving wheel into an internal toothed rim wheel, having a
plate side, and centre boss with roller or ball bearings, to run freely on a sleeve
or hollow spindle that works on the pedal centre of motion spindle, The said
internal toothed wheel having pinions gearing into it, and also gearing into a
fixed pinion at the centre of motion, around the teeth of which they revolve-pro-
tioned to suit the speed required, and arranged to either increase or decrease it.
And also to fix the interior wheels, to run the whole as one pitch chain driving
wheel with the chain passing over it, and the rear wheel hub as usual. The
method of fixing the sleeve or hollow spindle pinion, is by having a collar on the
end of the sleeve; with holes round its circumference into one of which a taper-
ing pin working from the framing is forced when revolving, or otherwise, The
said pin being actuated by a lever attached to a convenient part of the frame
within easy reach of the rider, The said lever also having connected to it a fork
for throwing in and out of contact a clutch that is traversed on the before
mentioned sleeve or hollow spindle, for the purpose of working the above
described internal toothed wheel, or disengaging same.
The automatic action of pin, and clutch, being caused by and worked by the
lever on framing, as set forth.
The variable speeds are arranged to suit the requirements, by the different
diameters of the wheels driving, and driven.-So that an increase can be obtained
of fifty to one hundred per cent or a decrease of speed, and consequent increase of
power in the same ratio, as set forth.
Dated this first day of January 1897.
ROBT. H. TAYLOR..
GEO. H. SCOTT.
COMPLETE SPECIFICATION.
"An Apparatus for Increasing the Speed of Cycles, and other
Velocipedes for Level Roads, and of Increasing the Power for
Hill Climbing."
I
We, ROBERT HENRY TAYLOR, Civil and Mechanical Engineer, Garfield Lodge.
Stoke, Devonport, and GEORGE, HALL, SCOTT. Civil Engineer, Dunkeld Villas.

page_text: Ford Park. Plymouth. 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 has reference, in this arrangement of gearing to produce increased
speed, we make the ordinary large chain driving wheel into an internal toothed
rim wheel A. Figs. 1, 2, & 3 having a plate side or other convenient shape for
lightness, and centre boss with roller or ball bearings B, to run freely on a sleeve
or hollow spindle C, that works on the pedal centre of motion spindle or shaft D.—
The said internal toothed wheel A having pinions E. E. (Fig. 1.) gearing into
it when requiring to travel by the slow or power gearing and also gearing into
a fixed, pinion F, at the centre of motion, around the teeth of which they revolve,
proportioned to suit the speed required, and arranged to either increase or decrease
it. To decrease speed, the two pinions E. E. are used as in Fig 1, which reverses
the motion, but the pedal pinions E. E. carry the rim or chain wheel onwards just
the same .e. like the motion of a clock from left to right, and so produces a
speed as much slower than the pedal spindle or shaft, as by the use of one
nion G. Fig 2. produces a speed as much faster than the pedal spindle or shaft,
The ratio of speed being determined by the size of the centre pinion F, and the
chain wheel A, which would be made to suit the requirements of the rider using.
the cycle or other velocipede.
As arranged on the drawing: Fig 1. would give a decrease of speed of fifty
per cent, from the normal speed; which, would be having all gearing fixed, and
revolving with the pedal..e. The pinions on the pedal arm are engaged with
the internal toothed chain wheel A, and the centre wheel F-and when the
clutch K is brought forward (by the fork J) on the hexagonal part of the spindle
it joins the matrix of the clutch, and so they all revolve together, viz:-
The hexagonal spindle holds the clutch K, that holds its fellow part which is
fixed on the sleeve or hollow shaft C, on the other end of which is fixed the centre
wheel F, that is geared to one pinion E which is also geared to the other pinion E.
and that is geared to the internal toothed wheel A. So that by locking the clutch
they all become fixed to one another, and the internal toothed chain wheel A
revolves a fixture to the pedal arm, and therefore is of the normal speed of the
machine.
.
But when the clutch is disengaged, the pin drops in the hole or notch of collar H
down the guide I and so fixes the centre wheel F, round which the pinions revolve,
and, by their reverse action on the internal toothed chain wheel which is still
carried forward by the pedal arm the decrease of fifty per cent from the normal
speed is produced, whereas the arrangement Fig 2 would give an increase of fifty
per cent from the normal speed.―.
To fix, the interior, wheels to run the whole as one pitch chain driving wheel,
with the chain passing over it, and the rear wheel hub as usual. We arrange the
methods of fixing the sleeve or hollow spindle pinion by having a collar H. on the
end of the sleeve inside the sprocket wheel, with holes or openings round its
circuniference into one of which a tapering pin working from the framing, and
in a guide I is forced when revolving, or otherwise, The said pin being actuated
by a lever attached to a convenient part of the frame between the tubes over the
boss. The said lever also having connected to it a fork J. for throwing in and
out of contact a clutch K, that is traversed on the before mentioned spindle,
having a hexagonal part L, to slide on, and so carry round all parts connected
with it, and working the above described internal toothed wheel as part of the
pedal spindle or shaft, or disengaging same to work the power gear if so
arranged, or increase of speed gear if so required.
The automatic action of pin and clutch being caused by, and worked by the
lever on framing brought to within easy reach of the rider who when lifting or
depressing the hand lever or turning a screw wheel as the case may be engages
the collar, the pin, holding it, and the sleeve or hollow shaft, and the centre pinion

page_text: of the large internal wheel; then the gearing works for increase or decrease of
speed as desired.
On reversing the gear the pin lifts out of the collar twice as quickly as the
ciutch will engage with its fellow part, and it therefore cannot lock.-Again on
reversing to engage the collar, the fork will have taken the clutch out of contact,
and well away as shewn before the pin engages the collar: -The collar is secured
to and forms part of the sleeve or hollow shaft, on the same shaft the clutch is
attached by a left handed screw thread, so that when the strain comes on it will
tighten, and at the other end the centre pinion is fastened by a righthanded screw
thread and further fixed by a small screw tapped in as a key, to prevent it work-
ing off as set forth.
-The variable speeds are arranged to suit the requirements, by the different
diameters of the wheels driving, and driven, so that a great increase or decrease
may be obtained, as set forth.
We have designed the whole arrangement so as to be fitted, and adapted to the
lower bracket or boss of ordinary bicycles as shewn-and to the most convenient
position on other velocipedes.
Fig 4 shews side elevation of collar and Fig 5 the side elevation of the clutch.
The ball or roller bearings, and sleeves on pedal shaft are variable to suit the
different sized bottom brackets of ordinary cycles,-as set forth.
In order that our invention may be thoroughly understood, we have illustrated
the several constructional features in the accompanying drawings, which are to
be taken as part of this specification and read therewith.
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 distinct novelty of the whole arrangement as applied to the lower
bracket of a bicycle, whereby we are enabled to get by the gearing a decrease or
an increase of speed,-as set forth.
2. The same principle of gearing for application to other velocipedes for speed-
ing purposes.
3. The method of direct driving off the pedal arm by pinion or pinions, on to
the internal toothed chain wheel, as set forth.
Dated this 8th day of September 1897.
ROBT. H. TAYLOR
GEO. H. SCOTT,
Assoc.M.M.Inst. C.E. etc.