An Improved Gearing for Driving Velocipedes.
Year: 1892

page_text: Date of Application, 3rd June, 1892
Complete Specification Left, 3rd Mar., 1893—Accepted, 2nd June, 1893
PROVISIONAL SPECIFICATION.
An Improved Gearing for Driving Velocipedes.
I ROBERT JOB CASWELL Junior of 29 Wellfield Road Streatham in the
County of Surrey Plumber do hereby declare the nature of this invention to be as
follows:-
The object of my invention is to provide a gearing for driving velocipedes
whereby amongst other advantages the greatest power can be exerted and applied
during and by the downward movement of the foot and any desired speed can be
arranged for.
To carry out this object on a prolongation if necessary of the fork or on other
corresponding or proper part of the velocipede I fit a short projecting stud whereon
is loosely mounted a wheel which by internal gearing or other suitable and usual
or other appliances is so connected with the axle of the driving wheel or wheels of
the velocipede as to be capable of causing the same to revolve at the arranged for
proportionate speed. On the stud and outside the aforesaid loose wheel is
eccentrically fixed a disc or pulley the body whereof is on the leading side of or
before the stud and on and round the periphery of this disc or pulley is mounted
by a band or strap a treadle lever. In the treadle lever is formed a slot where-
through passes and wherein is engaged and can travel a short roller or other pin or
projection fitted on the face of the loose wheel near the periphery thereof. Any
suitable ball bearings may if desired be provided and fitted to the loose wheel and
between the band or strap of the treadle lever and the periphery of the fixed disc
or pulley.
All these parts of this driving gearing are so arranged and formed and propor-
tioned that when the treadle lever is in an horizontal position pointing forwards
the roller or other pin by and through which the loose wheel that actuates the
driving axle is revolved is at the bottom of the slot or at that end thereof that is
nearest to the fixed disc or pulley wherearound this treadle lever is mounted
whereby the greatest power can obviously be exerted and applied at this time while
when the treadle lever is in the opposite position or horizontal pointing backwards
as this fixed disc or pulley is eccentric to the loose wheel the roller or other pin
will be at the top or opposite end of the slot whereby the least power will obviously
be exerted and applied at this time.
The stud on which the loose wheel is mounted and the disc or pulley eccentrically
fixed may be above or below or on a level with and may be before or behind or in
the same perpendicular line with the axle of the driving wheel or wheels of the
velocipede as may be desired in each particular case the fork or other part of the
frame of the velocipede being formed and arranged accordingly and it is obvious
that this apparatus is generally and preferably fitted to and for each treadle.
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COMPLETE SPECIFICATION.
An Improved Gearing for Driving Velocipedes.
I GEORGE HEMINGTON of 8 Chetwode Road Upper Tooting, Gasfitter,
Executor to Robert Job Caswell deceased of 29 Wellfield Road, Streatham 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:-
To carry out this object, on a prolongation (if necessary) of the fork A or on

page_text: other corresponding or proper part of the velocipede I fit a short projecting stud B
whereon is loosely mounted a wheel C which by internal gearing or other suitable
and usual or other appliances is so connected with the axle H of the driving wheel
or wheels of the velocipede as to be capable of causing the same to revolve at the
arranged for proportionate speed.
On the stud B and outside the aforesaid loose wheel C is eccentrically fixed a
disc or pulley D the body whereof is on the leading side of or before the stud B
and on and round the periphery of this disc or pulley is mounted by a band or strap,
a treadle lever E; in the treadle lever is formed a slot F wherethrough passes and
wherein is arranged and can travel, a short roller or other pin or projection G
fitted on the face of the loose wheel C near the periphery thereof. Any suitable
ball bearings may if desired be provided and fitted to the loose wheel and between
the band or strap of the treadle lever E and the periphery of the fixed disc or
pulley D.
All the parts of this driving gearing are so arranged and formed and proportioned
that when the treadle lever E is in a horizontal position pointing forwards, the
roller G or other pin by and through which the loose wheel C, that actuates the
driving axle H is revolved, is at the bottom of the slot F or at that end thereof,
that is nearest to the fixed disc or pulley D where around this treadle lever E is
mounted, whereby the greatest power can obviously be exerted and applied at this
time, while when the treadle lever E is in the opposite position or horizontal or
pointed backwards, as this fixed disc or pulley is eccentric to the loose wheel, the
roller G or other pin will be at the top or opposite end of the slot F whereby the
least power will obviously be exerted and applied at this time.
The stud B on which the loose wheel C is mounted and the disc or pulley D
eccentrically fixed, may be above or below or on a level with, and may be before
or behind, or in the same perpendicular line with the axle H of the driving wheel
or wheels of the velocipede or other machine as may be desired in each particular
case; the fork A or other part of the frame of the velocipede being formed and
arranged accordingly, and it is obvious that this apparatus is generally and preferably
fitted to and for each treadle or propelling crank of machine.
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
That my invention provides a gearing for driving velocipedes, whereby amongst
other advantages the greatest power can be exerted and applied during and by the
downward movement of the foot or other propelling power, and any desired speed
can be arranged for.
Dated this 2nd day of March 1802
GEORGE HEMINGTON,
Executor to R. Caswell, deceased.