IMPROVEMENTS IN MOWING AND REAPING MACHINES
Year: 1880

page_text: LETTERS PATENT to Edward Manisty and John William Gibson, of Dundalk,
County of Louth, in Ireland, Engineers, for an Invention of "IMPROVEMENTS
IN MOWING AND REAPING MACHINES."
PROVISIONAL SPECIFICATION left by the said Edward Manisty & John
William Gibson at the Office of the Commissioners of Patents on the 27th
August 1880.
.
EDWARD MANISTY and JOHN WILLIAM GIBSON, of Dundalk, County of Louth,
in Ireland, Engineers. "IMPROVEMENTS IN MOWING AND REAPING MACHINES."
Our said Invention has reference to improvements in mowing or reaping
machines in which the necessary motion & speed of the knife or sickle is obtained
by a simple gearing, & consists of the following arrangement of apparatus:-To-
the body of the machine is fixed a circular rack, in which works a wheel of equal
pitch revolving on a pin hung on the arm or disc of the road or ordinary driving
wheel, the latter revolving on a shaft or spindle, on which also revolves a pinion
wheel, but which pinion is loose on the said shaft or spindle. This pinion is
connected by a clutch to a bevil wheel which drives the shaft or spindle which
actuates the crank for working the sickle. The wheels geared into the driver or
fixed circular rack may be of variable diameters to suit changes of speed, & one or
more wheels may be used in gear with the circular rack as preferred.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Edward Manisty & John William Gibson in the Great Seal
Patent Office on the 24th February 1881.
EDWARD MANISTY and JOHN WILLIAM GIBSON, of Dundalk, County of Louth,
in Ireland, Engineers.
"IMPROVEMENTS IN MOWING AND REAPING MACHINES."
Our said Invention has reference to improvements in mowing or reaping
machines in which the necessary motion and speed of the knife or sickle is obtained
by a simple gearing, and consists of the following arrangement of apparatus:-
To the body of the machine is fixed a circular rack, in which works a wheel of
equal pitch revolving on a pin hung on the arm or disc of the road or ordinary
driving wheel, the latter revolving on a shaft or spindle, on which also revolves a
pinion wheel, but which pinion is loose on the said shaft or spindle. This pinion
is connected by a clutch to a bevil wheel which drives the shaft or spindle which
actuates the crank for working the sickle. The wheels geared into the driver or fixed
circular rack may be of variable diameters to suit changes of speed, and one or more
wheels may be used in gear with the circular rack as preferred.
Fig. 1 of the accompanying Drawing represents a side view, and Fig. 2 a sectional
plan of driving gear according to our Invention for a mowing or reaping machine.
A is the travelling or road wheel from which the movement of the reaping or
mowing mechanism is obtained; B is a circular rack or internally toothed rim
fixed to the framing of the machine; 'C is a pinion or planet wheel mounted on a
crank pin H projecting from the wheel A. The planet wheel C gears with the
rack B, and also with a pinion D which is fitted to revolve loosely on the axle of
the driving wheel A. The pinion D has a projecting boss, on which is fitted with
a feather the sliding clutch E, which while it revolves with the pinion D can be
slid longitudinally by a clutch lever J, so as to engage with or to be disengaged
from a corresponding clutch on the boss of a bevil wheel F, which is fitted to
revolve freely on the axle of A. With the wheel F gears the bevil pinion G which
is on the spindle of the crank eccentric or cam that drives the reaping or mowing
knives or sickles.
Having thus described the nature of our Invention, and in what manner the
same is to be performed, we claim in respect of the driving gear for mowing or
reaping machines,―
The combination of the stationary circular rack B, the planet wheel C on the
crank pin H of the travelling wheel A, and the clutch pinion D, substantially as
herein described with reference to the accompanying Drawing.
In witness whereof, we, the said Edward Manisty and John William Gibson,
have hereunto set our hands and seals, this Eighteenth day of February,
in the year of our Lord One thousand eight hundred and eighty one.