PROVEMENTS IN MACHINERY FOR HUSKING, WINNOWING, CLEANING, SORTING, COATING, OR. POLISHING COFFEE AND RICE
Year: 1879

page_text: PROVISIONAL SPECIFICATION left by Reginald Cromar Grahame and Nathan
Gold Kimberley at the Office of the Commissioners of Patents on the
21st May 1879.
REGINALD CROMAR GRAHAME, of New Malden, in the County of Surrey, and
"IM-
NATHAN GOLD KIMBERLEY, of Regent's Park, in the County of Middlesex.
PROVEMENTS IN MACHINERY FOR HUSKING, WINNOWING, CLEANING, SORTING,
COATING, OR. POLISHING COFFEE AND RICE."
.
This Invention relates to improvements in machinery for husking coffee and
rice. The berries or grains being separated by passing through a current of air to
remove the husks, dirt, and other valueless matter, and falling on to sieves where
illshapened, injured, and other useless particles too heavy for the current of air to
have acted on successfully are removed, and when required to sort the berries or
grains to their different sizes. The coating when required being effected by
shaking the berries or grains along with the material it is desired to coat them with.
The berries or grains may be polished by friction between suitably prepared surfaces.
Our improvements are comprised in, 1stly. A machine in which the berries or grains
are delivered by self acting vibratory or rotary feed between plates or discs in
pairs with the acting surfaces formed on, or added to, one of each set of plates or
discs, is caused to revolve rapidly by being keyed on to the central shaft, the berries
or grains being conducted between each set of acting surfaces by the centrifugal
force imparted to it, or by its gravity, or by both combined.
The area of each set of the acting surfaces of such plates or discs being limited
to allow the berries or grains to change their position between each operation, by
this means the loss, breakage, or other damage will be greatly reduced.
2ndly. A machine in which the berries or grains are delivered by self acting feed
on to rapidly revolving plates or discs, having pins, studs, projecting pieces, or
breakers raised from the same, to act on the berries as they are projected by the
centrifugal force, or fall by gravity from the centre. These projections may be
formed so as to assist the natural force with which the berries, or grains, would.
be thrown against the sides of the machine, the internal pheriphery of which may
be serrated or formed with teeth, and notches, guides, or shoots being placed to
guide the material to the next revolving plate or disc.
3rdly. A machine in which the berries, or grains, are delivered on to rapidly
revolving flat or disced plates, or sieves in series with corrugated, serrated, or uneven

page_text: The force
surfaces, or the surfaces may be smooth with radial projections put on.
exerted causing the berries or grains to be thrown from the plates or discs against
the inner periphery of the casing which preferably is serrated, grooved, or fluted.
The material falls by its own gravity on to the next revolving plate or disc.
4thly. The plates or discs may be made solid with the acting surfaces cast, or
formed on, or with arms, or bearings radiating from or to the centre to support the
acting surfaces, which must be firmly fixed thereon.
5thly. The spaces, guides, or shoots between the acting surfaces, and in some
cases the internal periphery of the machine, may be perforated or formed
of wire woven to suitable mesh to permit the berries or grains to fall, or to
be projected through as they are freed from the husks, as well as such pieces of
husks and other valueless matter that have been reduced small enough. Brushes
may be applied to assist the action of the sieves or perforations.
6thly. Causing the berries or grains with the loose husks to pass through a
current of air to remove the husks and clean the berries or grains from grit and
other valueless matter on to shaking or vibrating sieves, by which the broken or
deformed pieces of berries or grains will be removed. When required this sieve or
sieves can be made with pieces of sieving of different degrees of fineness to sort the
berries or grains into their various sizes or grades.
7thly. Applying brushes to act against the revolving plates or discs to polish the
berries or grains after the husks have been removed; the polishing surfaces can be
built up of leather fixed on edge or crossway of the grain.
. Or the polishing surfaces can be made to revolve in connection with the, central
shaft. The berries or grains being polished between the revolving surface, and the
inner periphery of the casing, or any suitably prepared surface connected with it.