Speed Driving Mechanism).
Year: 1886

page_text: Speed Driving Mechanism).
I, JOHN CHARLES GARROOD of 58 Coolinge Road Folkestone in the County of
Kent Plumber do hereby declare the nature of this invention for BICYCLES &
TRICYOLES, to be as follows:-.
The centre part of the axle upon which are placed the treadles of the machine
is square over the square portion is placed a hollow square with projecting ends
the square portion being moved either to the right or to the left by means of a
forked lever.
•
On the axle are placed two coged wheels one larger. than the other, free to
revolve on axle, from these two wheels chains are connected with two equal sized
coged wheels, upon the axle of the Bicycle & Tricycle for the purpose of causing
them to rotate it is clear that by means of the lever and the sliding portion of the
axle either of the wheels on th treadle can be made to rotate with it and thus
propel the machine, always leaving the other wheel on treadle axle free, thus
when by means of the lever one end of the sliding square on the axle is placed in
the centre of the smaller wheel which will then give motion to the machine, (power)
is increased hence the utility in ascending inclines, when the square sliding
portion is placed in the centre of the larger wheel speed is increased hence its
advantage in travelling on level roads.

page_text: Speed Driving Mechanism.
I JOHN CHARLES GARROOD of 58 Coolinge Road Folkestone in the County
of Kent, Plumber do hereby declare the nature of this invention for " INCREASING
POWER AT WILL and in what manner the same is to be performed, to be par-
ticularly described and ascertained in and by the following statement :-
"
Fig. 1. is a portion of tricycle axle with ends A. A¹ round and centre part B. 5
square.
Fig. 3 is a square sliding axle C, with projecting ends D. D¹.
Fig. 2. represents sliding axle B, upon each of the rounded portions of tricycle
axle A. A¹ is a cog wheele E. E¹ free to rotate on the axle.
F. is a lever attached to the sliding axle C. in a rounded groove so that the axle 1
may rotate freely, by means of this lever F. the sliding axle C. can be moved
either to the right or the left and one of its projecting ends is brought behind a
bar Fig. 4. G. between the centre and circumference of the cog wheel and thus
made to engage it.
The sliding axle is so arranged in length that when it engages one cog wheel it 1
leaves the other free to rotate but either cog wheel can be engaged.
Fig. 5 shows fig. 3 applied to a tricycle, K. L. are two cog wheeles upon the
treadle axle L. being smaller than K, these are connected by means of chains with
the cog wheels E. E thus when by means of the lever F. the sliding axle C. is
made to engage the cog wheel E. K. is the driving wheel.
When E¹ is engaged then the smaller cog wheel L. becomes the driving wheel
and it is obvious, power is increased hence its advantage and utility in ascending
inclines.
The sliding axle may in some cases be more conveniently placed on the treadle
axle in preferance to the axle of the tricycle wheels, and this invention can be
applied whith the same facility to tricycles with centre gear and to bicycles, also
to all existing bicycles and tricycles at a trifling expence.
.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. A sliding square axle with projecting ends to slide upon a square portion of
tricycle or bicycle axle for the purpose of engaging two cog wheels one only at a
time substantially as herein before described.
2. Two cog wheels free to rotate upon the rounded portion of tricycle or
bicycle axle either of which may be engaged by the projecting ends of the sliding
axle in the same manner and for the purpose substantially as herein before
described.

page_text: 3. Two cog.wheels of unequal size upon the treadle axle of bicycle or tricycle
connected by means of chains with those placed upon the tricycle axle and either
may be made the driving wheel in the same manner and for the purpose sub-
stantially as herein before described.
4. A lever working in a rounded groove upon the square sliding axle allowing
the same to rotate freely in the same manner and for the purpose substantially as
herein before described.