Was CLEANSING, AND DRYING EVERY DESCRIPTION OF GRAIN, AND IN APPARATUS FOR SUCH PURPOSE
Year: 1864

page_text: PROVISIONAL SPECIFICATION left by Thomas Grimmett at the Office
of the Commissioners of Patents, with his Petition, on the 11th April
1864.
I, THOMAS GRIMMETT, 4, Upper Ground Place, Upper Ground Street, Black-
friars, Surrey, do hereby declare the nature of the said Invention for "Was
CLEANSING, AND DRYING EVERY DESCRIPTION OF GRAIN, AND IN APPARATUS FOR SUCH
PURPOSE," to be as follows:-
The first part of this Invention consists of a perforated spindleless cylinder,
placed in a suitable frame, "the cylinder revolving on pulleys at each end," and
is supplied with grain from a hopper attached to the frame. The hopper
having a spout leading direct into the cylinder separating the dust and small
seeds which pass off by a spout. The large stones, straws, or other rubbish
passing off at the end of the cylinder, the grain passing off by a spout into the
second part of this Invention.
The second part of this Invention consists of a small tank placed in a larger
tank for the purpose of separating any stones which may have passed through
with the grain; the small tank having a hole in the bottom, with a valve
therein connected to a cross bar under the bottom, the cross bar having two
upright rods with a float on the top of each; the large tank being supplied with
water which regulates the floats and valve, "the small tank being supplied
with grain from the separator," the stones being heavier than the grain fall
under the valve through the flow of water into the large tank, the flow of
water carrying off the grain into the third part of this Invention.

page_text: The third part of this Invention consists of a perforated cylinder with a
rotary drum therein, the drum having on it an archimedien screw, and a
spindle through the centre with a pulley attached thereto, by which motion is
given with straps or cords. The archimedian screw is formed of iron and
bass (or other preferable material) and is constructed in segments of brush
and metal. This cylinder, drum, and screw are placed in an open inclined
cistern of equal length and inclination, having a funnel and tap constructed
underneath to draw off the dirty water. The cistern being kept partially full
of water is supplied from the afore-mentioned tanks, the tanks having a spout
leading through the end of the cistern, through which the water and grain
passes into the bottom of the cylinder, the grain is then agitated by the drum
and screw which carries it up the cylinder (into the fourth part of this
Invention) the dirty water being drawn off by a tap..
The 4th part of this Invention consists of a cylinder, drum, and screw, con-
structed upon the same principle as the afore-mentioned cylinder, drum, and
.screw, that is, in segments, and is driven at great speed by gear or pulleys;
this cylinder, drum, and screw is placed longitudinally in an open cistern, the
grain being supplied through a spout into the cylinder (from the 3rd part of this
Invention) when it is partially dried by the friction of the screw which carries
the grain to the end of the cylinder (into the fifth part of this Invention) the
cistern receiving the water which is forced off the grain through the perfora-
tions of the cylinder is then drawn off by a tap.
The 5th part of this Invention consists of a longitudinal iron oven having
two crowns, one about midway from the bottom, the other on the top, the top
half having two drums therein, one at each end, with a metal strap revolving
thereon for the purpose of drying the grain, the drums having spindles through
the centre one having a pulley by which motion is given, the spindles taking
their bearing from the outside of the oven, the bearing having at one end a
spring so placed as to regulate the contraction or expansion of the metal strap;
the bottom half is so constructed that it may be heated by steam or fire which
heats the whole, the grain being supplied from the 4th part of this Invention,
which has a spout leading into the top of the oven, the grain thereby falling
direct on to the metal strap which conveys it to the end of the oven, it then
passes out through a spout finally dried.