Let me briefly explain these three basic machines. As the nuts are gathered in the orchard they are brought to the huller in bushel crates. The huller is located in a separate room. This room has the floor depressed to catch the removed hulls that are flushed outdoors with the aid of running water. The cylinder of this huller is 30 inches in diameter and 14 inches high. It is made of 3/16ths boiler plate. Three inches from the bottom of the cylinder is a revolving disc smaller than the inside of the cylinder. The disc being small enough it allows a 5/8th opening around the inside of the cylinder. It is this opening that permits the hulls to drop to the floor. The nuts are held captive because there is no opening in the cylinder for them to leave until the discharge door is opened on the side of the cylinder. The cover of the cylinder has a 10 inch feed hole into which the nuts are fed. A 10 inch furnace pipe elbow runs from the hole to the serving trough into which the nuts are poured. A 10 inch pusher is used to shove the nuts into the huller and serves to keep the feed hole closed while the nuts tumble around. The disc runs at 250 RPM which is the proper speed to do a good job. While the nuts tumble around a stream of water is used to wash the hulls free from the nuts and force the removed hulls to the floor below. The disc is supported by a 1-3/8 inch diameter shaft that runs through the disc and is held central as it revolves in a flange containing a 3/4 ball bearing that fits into the end of the concave in the shaft. Up four feet from the disc is a link self aligning bearing that allows the shaft and disc to turn like a gyroscopic top. The shaft's pulley has 'V' belts connected to a 3/4 h.p. motor. I have hulled up to 40 bushels of clean nuts in 8 hours. The nuts after hulling are placed on drying trays indoors where temperatures are better controlled. The principal of this huller is that it separates the hull by centrifugal force. The hull drops down through the opening between cylinder and disc while the nuts riding on disc are discharged at right angles to the fall of hull. The machine is a separator.
The next basic machine is the cracker. This cracker is the Wylie cracker in principle and is made in Eugene, Oregon. Simply explained it could be likened to two pages in a book. One page is perpendicular while the other page is off the perpendicular about 7 degrees. The first page which is the anvil is fixed save for adjustments for nuts of varying size. The other page or hammer riding up and down through an inch and one quarter of travel is fixed to a crank below. Both of these pages or plates are heavy cast iron plates that are fluted and cause the nut to be cracked against these saw toothed flutes and while being cracked are revolved down through the plates. The plate moving at an angle forces the nut finally through a 3/8 inch opening where they fall into a rotary sieve. The sieve has three sizes of mesh. 5 mesh, 2 mesh and 3/4 mesh. The larger pieces go on through and are returned to the cracker. This cracker will crack up to 500 pounds per hour, and uses a 3/4 h.p. motor.
The last of the three basic machines is the picker. I have not yet built the picker but a number of the parts have already been machined and before long it will be a reality. The Kenneth Dick, picker, of Peebles, Ohio is the best for small orchards. It is essentially a separator using a conveyor belt which carries the cracked nuts to needles that pick up the kernels and deposit them on trays that at the timed moment accept the black walnut kernels. The discarded shells remain on conveyor and travel to the end and fall into a receptacle. After this process, further inspection becomes necessary but up to the present it is the best we have.
The black walnut is a messy nut to fool with but with the proper machines it soon becomes a pleasure to work with it. I can work all day hulling nuts and finish with clean unstained hands.
Processing the Persian walnut is a simple matter as compared with the black walnut. My Persian nuts are gathered and placed on drying trays. Most of the nuts fall free from hull and the stick tights are discarded as inferior. N.N.G.A. members need but write to the agricultural colleges in California, Oregon and Washington and a list of publications will be sent. One of the latest machines being offered is one that picks the nut from the orchard floor with a speed with which no human can compete. It has not only removed the back ache but the human back as well. The Persian walnut industry in the Pacific Coast states is big business.
There is only one organization that can and does disseminate the necessary knowledge and experience that will give the northern grown nut its proper place in the American diet. That is the Northern Nut Grower's Assn. You newer members have become heirs to knowledge based on the experiences of others which represents not only blood, sweat and tears but a lot of good hearty belly laughs. When one becomes nut conscious there is no turning back. It gives life a new approach and a finer meaning.
Black Walnut Processing at Henderson, Kentucky
R. C. MANGELSDORF, St. Louis, Mo.
MR. MANGELSDORF: Mr. Walker and Mr. McDonald are unable to be here today, and I don't know if I can fill their shoes or not, because I am not in the purchasing or processing end of the black walnut business.
We started this black walnut shelling operation a season ago at Henderson, Kentucky, with the idea of processing the nuts there and transporting the kernels to St. Louis for final processing and marketing. At Henderson, Kentucky we are located outside the city limit, and we have no fire protection, and as a result, the insurance rates on our building, storage sheds, and black walnuts in storage have been so high that we are looking around for possible plant location sites where we can reduce that expense of operation.