HEADING 84.37 - MACHINES FOR CLEANING SORTING OR GRADING SEED GRAIN ORDRIED LEGUMINOUS VEGETABLES; MACHINERY USED IN THE MILLINGIN DUSTRY OR FOR THE WORKING OF CEREALS OR DRIED LEGUMINOUS VEGETABLES OTHER THAN FARM-TYPE MACHINERY.
117 COMMODITIES
8437.10 - Machines for cleaning sorting or grading seed grain or dried leguminous vegetables
8437.80 - Other machinery
8437.90 - Parts
(I) MACHINES FOR CLEANING SORTING OR GRADING SEED
GRAIN OR DRIED LEGUMINOUS VEGETABLES
This heading covers machines whether of horticultural agricultural or industrial types of a kind used for cleaning sorting or grading cereal grains dried leguminous vegetables seeds etc. by winnowing blowing sieving etc. Such machines include :
(1) Fanning mills consisting of a feeding hopper a blower and sieves (usually vibrating).
(2) Grading winnowers rotating winnowers and seed or grain selectors more complex machines which clean by means of air currents and grade the seed or grain according to weight size or shape. Some seed selectors etc. incorporate auxiliary devices for coating the seeds with insecticide powders etc.
(3) Sieving belts often used for cleaning beet seed. They consist of a series of rolls operating an endless inclined belt running under a feeding hopper. Theseeds roll freely to the bottom of the belt but the light vegetable waste adheres to the plushy surface of the belt fabric.
(4) Special machines for selecting and grading seed for planting.
This heading also covers machinery used in the milling industry for cleaning sorting or grading grain prior to milling. Some of these machines are based on the same principles as the winnowing screening and grading machines described above but are designed for larger output and are specialised for the milling industry e.g. :
(1) Cyclone separators for cleaning the grain.
(2) Machines for cleaning and grading by the action of revolving pocketed or perforated drums.
(3) Aspirator separators with oscillating sieves.
(4) Separators and graders of the magnetic or electro-magnetic types.
(5) Washing stone-removing and " whizzing " machines with or without
subsidiary drying columns.
(6) Grain brushing machines.
(7) Grain dampening machines whether or not incorporating heating or weighing
apparatus.
The heading also includes combined machines which clean sort and grade
simultaneously including machines incorporating devices for electro-magnetic
separation.
(II) MACHINERY USED IN THE MILLING INDUSTRY
In addition to machinery for cleaning sorting or grading grain prior to milling (see Part
(I) above) the following are included as machinery used in the milling industry :
(A) Certain machines for mixing or preparing grain prior to milling e.g. :
(1) Machines for mixing grain in pre-determined quantities.
(2) Grain scouring machines consisting of spiked drums turning against
rubber cylinders and thus eliminating the softer grains.
However the heading does not cover :
(a) Plant operating by temperature change (heading 84.19). For example heading 84.19 covers such
drying or cooling columns but grain dampening machines with thermal equipment remain in this
heading.
(b) Centrifugal dryers (heading 84.21).
(c) Conveyors and elevators (e.g. of the bucket belt or pneumatic suction types) (heading 84.28).
(B) Grinding or crushing machinery e.g. :
(1) Grinding mills.
(2) " Breaking " rolls or mills composed of several sets of grooved rollers sometimes internally cooled which crush the grain into middlings semolina
and flour.
(3) Reduction rolls or mills with smoother rollers specially designed to
convert middlings semolina etc. into flour.
(4) Disintegrators or impact grinders used to grind down into flour the meal etc. which adheres to the mill or converter rollers in the preceding
processes.
(5) Feeders machines designed to ensure a regular and even flow of grain to
the crushing rollers.
The heading does not include small farm type grinding mills (heading 84.36).
(C) Machinery for the sorting or separation of flour from sharps or middlings.
This group includes machines for separating the flour meal middlings sharps etc. produced by milling.
This separation is effected by a series of operations carried out on the
following types of machines which are often used in series :
(1) Sifting machines (" bolters ") for separating flour from groats and meal.
Centrifugal sifters (or " reels ") consist of drums fitted internally with
beater bars and covered externally with gauze of various mesh sizes.
Oscillating sifters or plansifters consist of nests of free-swinging
superimposed sieves and collecting trays.
(2) Sieving machines or " purifiers ". These grade the middlings etc. and
also blow off the bran by means of vibrating sieves through which a current
of air is drawn.
(3) Bran cleaners.
(4) Blending machines for flour bran etc.; also machines for adding
vitamins to flour.
However the heading does not cover :
(a) Flour-drying machines (heading 84.19).
(b) Air filters and " cyclones " used to extract the dust from the exhaust air issuing from sorting or bolting
machines (heading 84.21).
(c) " Extraction recorders " for recording the flour extraction rate and other flour testing apparatus of
(III) MACHINERY USED FOR THE WORKING OF CEREALS
OR DRIED LEGUMINOUS VEGETABLES
The working referred to is generally preceded by preliminary cleaning sorting or
grading (see Part (I) above).
This group includes :
(1) Machines for husking cereals or dried leguminous vegetables.
(2) Rice hulling or polishing machines.
(3) Machines for splitting dried peas lentils or beans.
(4) Machines for preparing rolled or flaked oats etc. whether or not
incorporating auxiliary heating devices.
(5) Special milling and grinding machines for milling cereals (other than bread
grains see Part (I) (B) above) or dried leguminous vegetables into flour.
(6) " Bearding " machines and " clipping " machines designed to remove the "
beards " or " points " from barley or oat grains.
This part of the heading does not cover :
(a)Machinery or plant operating by heat exchange (e.g. steamers drying apparatus or roasting plant for the
manufacture of puffed or toasted grain; plant for malting barley for roasting flour etc.) (heading 84.19).
(b)Machines for processes beyond the flour-making stage (e.g. bakery preserving or macaroni-making)
(heading 84.38).
PARTS
Subject to the general provisions regarding the classification of parts (see the
General Explanatory Note to Section XVI) parts of the goods of this heading are also
classified here e.g. :
Sieves and sieve frames for the bread grain milling industry (other than bolting cloth whether or not made up - heading 59.11); mixing or separating cylinders; rollers for
bread grain mills or converters etc.
Millstones are however excluded (heading 68.04).
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