Shoe uses two 10" x 15"
screens, one for the top and the other for the lower
Perforated metal or wire
cloth screens are available in over 175 different sizes.
catchall (shown) performs as an air screening receptacle
with removable trays.
Popular with vegetable
and flower growers and in seed stores for specialized
cleaning, grading, and sizing.
Adjustable slide on the
air intake openings provide intermediate air regulation.
performance for small lot cleaning, testing or sampling.
Scalper and sifter
screens are standard.
Table top design is
small, yet accurate.
Compact and easily
Many laboratory uses.
Used in seed plants for
sampling large lots.
Powerful bottom blast
fan driven by a three step pulley.
Typical Commodity Flow:
The commodity is fed to the hopper and is spread evenly
across the full width of the top screen.
2. The product
then moves across the top screen, which has openings larger
than the product itself. The large foreign material is
"scalped" off while the good product falls through the
The bottom screen can either sift or scalp. To set up for
sifting, the bottom screen openings must be smaller than the
commodity being cleaned. Trash, weed seeds and splits drop
through the bottom screen while the good product passes over
it. (This is the flow shown in the diagram). When
scalping, the screen openings must be larger than the
product itself. The large foreign material is "scalped" off
while the good product falls through the screen.
Next, the product is routed through a column of air from the
bottom blast fan. This blast of air effectively removes any
lightweight trash and dust that may have remained after
Good, clean product is discharged at the bottom of the air
chamber into a clean seed box.
Cleaners were manufactured by the A. T. Ferrell company.
company still makes and sells agricultural equipment,
including seed cleaners. The picture on the right is