FOR ORDERING INFORMATION
The other factor that works in conjunction with slope
is the amount of material put in at any one time.
Slowing down on the input quantity is usually needed
when decreasing the slope, or the Harvester will overfill
and not screen the material completely. When using
large mesh screens, and a higher slope, usually more
material can be put in at once.
Screen Mesh Size
Jet stocks three size screen meshes: 1/8 inch, 1/4
inch, and 1/2 inch.
1/8 Inch screen mesh is very fine, and your castings
will look the best, but you will get the least amount
of volume. Most of the worm eggs will not go through
this size screen. If the material is very wet, this
size screen will do very little without vibration.
1/4 Inch screen mesh is the most commonly used. The
castings will still look very good, and you will get
more. Some eggs and very small worms can go through.
On wet material 1/4 inch mesh screens out much more
than 1/8 inch.
1/2 Inch screen mesh is mostly only used when trying
to harvest large worms, and as the second or third
screen size on a multi-screen Harvester. Many eggs
and small to medium worms can go through, and this
material would be added back to the bed. Wet material
will go through much better than with any smaller
Jet builds Harvesters with one, two, or three different
screens. This allows for more different types of screened
material at one time. A two screen model, like the
2420 or 3620, can have 1/8" on the top and
1/4" on the bottom, 1/4" on both,
or 1/4" on top and 1/2" on the bottom. A
three screen Harvester, like the 2430, is suited
for separating large worms, as most everything but
the largest worms will have gone through one of the
screens before reaching the output. The screens are
easily changed with only a screwdriver on a Jet Harvester,
so you can set it up the way that best suits your
beds and needs. You can specify which mesh you prefer
installed when ordering, and order additional sizes
Output Cone and Worm Diverter
The Output end of a Worm Harvester is generally a
cone shape. As the material insides the harvester
rolls around, the larger or wetter particles will
form into balls, like making a snowball. When these
reach the end of the Harvester and get into the cone,
the increased slope of the sides of the cone cause
them to roll out quickly. The worms tend to stick
to the metal of the cone, and do not roll as easy,
and therefore will stay in the cone longer. Since
the cone is rotating, the longer something stays in
it, the further over to the side it will come out.
The longer a cone is, with the same slope, the further
to the side the worms will go, and the better the
separation you will get. The output cone on a Jet
Harvesters has been designed for optimum worm separation.
With the Jet Diverter shaped like an upside down "V",
these two streams are separated enough that you can
have the worms land in one container, and everything
else in another. The Diverter can be adjusted from
side to side, to be able to place it at the right
place no matter what the conditions are.
Input Cone on Jet Harvesters
When material is put into any other Worm Harvester,
some of it will fall back out. This problem has been
addressed with some Harvesters by having the input
cylinder be very long. A solid cylinder is doing no
screening, and these only make it take longer before
the worms can get out. Other put a "ring"
around the input cylinder to try to keep material
from falling back out. This ring looks very much like
the blade on a meat slicer in reverse and can be dangerous
for the operator. It also is not entirely.
Jet has taken a different and unique approach, by
putting a reverse cone on the Input end of all of
our Harvesters. The increased slope of this cone pushes
the material forward and onto the screens. The decreased
time that your worms spend in the Harvester is another
plus. Cones are considerably more expensive to build
than a cylinder, but Jet is able to offer this advancement
for less money than its' competitions obsolete designs.
When you know how they work, and you know how they
are built, the Jet Worm Harvester stands out as not
only the Best designed and built Harvester, but also
the Best Value. We came up with our innovations because
we use Harvesters, and the other designs just didn't