Northern Nut Growers Association Thirty-Fourth Annual Report 1943
Science
Northern Nut Growers Association Thirty-Fourth Annual Report 1943
Northern Nut Growers Association -- Periodicals; Nut trees -- Periodicals; Nuts -- Periodicals
The cracking of the nuts is done with one of the small mechanical
crackers that is to be found on the market. The more care exercised in
the cracking at the nuts, the less work and time will be required in
separating the kernels. After cracking the nuts they are sifted through
a series of screens. This helps very materially in preparing them for
rapidly picking their kernels. It is quite important that this
operation be done properly if the kernel picking is to be made simple
and rapid. The cracked nuts are first sifted through a screen made of
1-inch mesh chicken wire netting. Next the nuts are sifted through a
screen made of 1/2-inch mesh hardware cloth. All material which will not
pass through this screen should be kept separate. Some of these pieces
will require recracking and kernel picking with the fingers. The
material which has passed through the 1/2-inch mesh screen is now sifted
on a hardware cloth screen with 5 meshes to the inch. Only the very fine
material will pass through this screen which is not suitable for further
kernel recovery. The material which remains on the 1/2-inch mesh screen
is now placed on the table especially made for kernel picking. This
table is shown in the accompanying sketch. The table is of suitable size
to allow two people to use it at the same time. The operators sit on
stools about 20 inches in height, and work from the low side of the
table. A small amount of the material is brought forward and spread out
very thinly before the operator. A piece of 1/2-inch softwood dowel
about 5 inches long with 4 No. 9 sewing needles imbedded in one end is
used to pick up the kernels. The needles are placed in the form of a
square and should be only about 3/32 of an inch apart to do the best
work. The picks should not be used to pry kernels from the shell, as the
needles would soon become bent and worthless. The picks are meant to be
used only to pick up the kernels from _among_ the shells. As soon as the
operator has removed all the kernels from the small amount of material
he has brought forward from the rear of the table, he shoves the shells
into the hole at the edge of the table and they drop into a receptacle.
The pick is used with the right hand, and the kernels are removed from
the pick with and into the left hand. As soon as a convenient handful of
kernels has been obtained, they are dropped into a small pan which sets
on the table near the operator's left hand. The rapidity with which
kernels may be picked by using these methods is surprising. It is
sometimes necessary to moisten the nuts and hold them in this condition
for 2 or 3 days before cracking them, to keep the kernels from
shattering unduly. After the kernels are picked out they are dried very
thoroughly. Trays whose bottoms are lined with screening somewhat finer
in mesh than that used for windows, are used to dry the kernels. Care
should be taken to not overheat the kernels, or their flavor and color
will be impaired.
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