Improvements in Rice Hulling Machines.
Year: 1896

page_text: Date of Application, 21st Aug., 1896
Complete Specification Left, 21st May, 1897-Accepted, 21st Aug., 1897
PROVISIONAL SPECIFICATION.
Improvements in Rice Hulling Machines.
We, THOMAS FREDERICK HIND and ROBERT LUND, both of the Atlas Works,
Preston, in the County of Lancaster, Flour Mill Engineers, do hereby declare the
nature of this invention to be as follows:-
This invention has for its principal object the providing of a rice hulling
machine suitable for being worked by hand power. In carrying out our invention
we employ within a suitably formed chamber an upper stationary disc and a
lower revolving disc the latter being mounted on the upper end of a vertical spindle
rotated through the medium of suitable speed gearing and preferably two liandle
or fly wheels one on each side of the machine. The upper face of the revolving
or lower disc is coated or roughened with cement corundum emery or the like
and the lower or opposite face of the stationary or upper disc carries a series of
radially disposed bars or ribs of leather standing and supported edgewise between
strips of wood but so as to project beyond the said strips. The rice (or "paddy")
to be hulled is fed into the space between the two discs through a central hole in
the upper disc and after being hulled between the emery or like surface and the
edges of the leather ribs finds its way past the peripheries of the discs and falls
through an opening in the bottom of the disc chamber into an aspirating chamber
below where by means of a suction fan the hulls or lighter particles are separated
from the heavier grains of the hulled rice. The fan may conveniently be driven
by a belt from one of the handle or fly wheels passing over a pulley on the
projecting extremity of the fan shaft.
COMPI
ATION.
Improvements in Rice Hulling Machines.
We, TноMAS FREDERICK HIND and ROBERT LUND, both of the Atlas Works,
Preston, in the County of Lancaster, Flour Mill Engineers, 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 :-
This invention has for its principal object the providing of a rice hulling
machine suitable for being worked by hand power. In carrying out our invention
we employ within a suitably formed chamber an upper stationary disc and a
lower revolving disc the latter being mounted on the upper end of a vertical spindle
rotated through the medium of suitable speed gearing and preferably two handle
or fly wheels one on each side of the machine. The upper face of the revolving

page_text: or lower disc is coated or roughened with cement corundum emery or the like
and the lower or opposite face of the stationary or upper disc carries a series of
radially disposed bars or ribs of leather standing and supported edgewise between
strips of wood but so as to project beyond the said strips. The rice (or "paddy ")
to be hulled is fed into the space between the two discs through a central hole in
the upper disc and after being hulled between the emery or like surface and the
edges of the leather ribs finds its way past the peirpheries of the discs and falls
through an opening in the bottom of the dise chamber into an aspirating chamber
below where by means of a suction fun the hulls or lighter particles are separated
from the heavier grains of the hulled rice. The fan may conveniently be driven
by a belt from one of the handle or fly wheels passing over a pulley on the
projecting extremity of the fan shaft.
In the accompanying drawings Fig. 1 is an end elevation partly in section and
Fig. 2 a side elevation also partly in section of our improved rice hulling machine.
a is the chamber within which is the upper stationary disc band the lower
revolving disc c carried on the vertical spindle d supported in upper and lower
bearings and rotated through the medium of bevel gearing e disposed
within the rim of the toothed wheel which gears into the pinion g. hh are two
handle or fly wheels mounted on the horizontal shaft i.
The "Paddy" is supplied or fed into the machine by means of an ordinary form
of shaking hopper & through the circular opening and after having been hulled
finds its way into the aspirating chamber m where by means of the suction fan n
the broken husks and dust are separated from the heavier grains of the hulled rice
which latter find their way downwardly into the grading delivery exits o o filled
with weighted or balanced hinged flaps all of the ordinary kind. q represents a
flap valve adjustable from the outside of the machine for regulating the amount of
suction to be exercised by the fan n within the aspirating chamber m.
represents the driving belt from the fly wheel h to the pulleys on the shaft of
the fan n.
Fig. 3 shews in diagrammatic form the disposition of the leather ribs f f supported:
edgewise between strips of wood.
Fig. 4 shews in plan view an arrangement of wings we preferably employ
on the underside of the revolving disce e to assist in blowing the dust and lighter
particles into the aspirating chamber m.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is:-
1. In a rice hulling machine the employment of an upper stationary disc and a
lower revolving disc and means for rotating the said lower disc substantially as
described.
2. In a rice hulling machine having discs as described in Claim 1 the use of
projecting leather ribs on one of the said dises substantially as described.
3. In a rice hulling machine the combination with discs arranged and operating
as described in Claim 1 of an aspirating chamber and a suction fan substantially
as described for the purpose specified.
4. The combination of parts constituting the improved rice hulling machine
constructed and operating substantially as described.
Dated this 21st day of Nov 1807
Dated this 21st day of May 1807
For the Applicants,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agont.