Abstract: An apparatus for successively delivering nuts from a hopper to a high production nutcracker. An endless conveyor extends through the hopper and includes a plurality of nut transport elements which pick up the nuts in a receptacle formed in the upper surface of each element. To insure that only one nut is received in each receptacle, each element is provided with a longitudinal slot in one of the sides of the element which communicates with the receptacle, and a pivotally mounted singulating arm extends into the slots of the advancing elements to eject any excess nuts from each receptacle. To accommodate nuts of different average size, the pivotal position of the singulating arm is adjustable by means of an actuating wheel positioned on the outside of the hopper.

Abstract: A high production nutcracking apparatus wherein the nuts are fed from a hopper on a feed conveyor which has an upwardly inclined segment which passes through the hopper, a horizontal segment which leads to the cracking apparatus, and an arcuate transition juncture which is between the two segments. The nuts are received in nut transport elements of the feed conveyor, and they are singularized and oriented while being advanced by means of a deflecting plate which overlies the feed conveyor from a point along the upwardly inclined segment, along the transition juncture, and to a delivery point where the nuts are lifted from the conveyor by a cracking turret. The downstream end portion of the deflecting plate comprises an elastomeric flap, which is highly flexible and relatively soft and which engages the advancing nuts with a frictional force sufficient to roll the nuts about their end to end axes and thereby properly orient the nuts in the nut transport elements.

Abstract: A high production nutcracking apparatus wherein any whole nuts which are mis-fed or fail to be cracked, are automatically returned to the feed hopper without being exposed to possible contamination. To separate the shell fragments from the uncracked whole nuts, there is provided an inclined openwork grate, which is sized and configured to permit the shell fragments to pass directly therethrough while the whole nuts slide down and drop off a lower end of the grate. The grate is formed of a plurality of parallel rods which are supported so that they vibrate during operation of the cracking apparatus, to facilitate the sliding movement of the whole nuts.

Abstract: A lightweight feed chain for a high speed nutcracking apparatus and which is composed of a plurality of individual nut transport elements mounted in succession. The nut transport elements are block-like in configuration, and each element includes a nut receptacle extending laterally across the upper face which is sized to accommodate a single nut of a given size. The elements are formed of a high impact plastic material which has been found to reduce wear and breakage from contact with the nutcracking components of the apparatus, and to reduce the weight of the chain. Also the elements may be color coded, with each color indicating a particular size of the receptacle.

Abstract: A sealed lubrication system for a high production nutcracking apparatus of the type comprising a plurality of cracking units mounted on a rotatable turret. The cracking units are operated by pressurized air during rotation of the turret, and the pressurized air includes an oil mist component to reduce friction and wear. The oil is recovered by a system which includes an essentially closed annular collection chamber which surrounds the turret and which leads to a drain and an oil tank, and the oil tank is divided by a porous baffle plate which serves to remove and collect the entrained oil before the air is released to the atmosphere.

Abstract: A cracking die assembly which is adapted for use in a high production nutcracking apparatus of the type wherein a nut is held between an anvil and a cracking die, and a shuttle then impacts against the rearward end face of the cracking die to sharply advance the cracking die and thereby crack the shell of the nut. The cracking die assembly includes a mounting sleeve having a bore with an internal shoulder, and a tubular retainer mounted within a portion of the sleeve bore so as to engage the shoulder of the sleeve. An annular gasket is fixedly mounted in the bore of the retainer, and the cracking die has a radial flange which is positioned to lie between the shoulder in the bore of the sleeve, and the gasket. Also, the gasket and radial flange have conforming surfaces which engage when the cracking die is impacted by the shuttle, and the gasket is free to radially expand to absorb a portion of the impacting force of the shuttle.

Abstract: A nutcracking unit which is adapted for use in a high production nutcracking apparatus of the type wherein a nut is held between an anvil and cracking die, and a shuttle then impacts against the rear end surface of the cracking die to sharply advance the cracking die and thereby crack the shell of the nut. The cracking die and the anvil have opposing concave cracking surfaces for supporting a nut therebetween, and each of the concave cracking surfaces is defined by an outwardly bowed convoluted curve made with circle arcs when viewed in cross section. This configuration allows a relatively small nut, such as a pecan seedling, to be engaged and cracked at a point spaced from the pointed end of the nut, which in turn results in fewer uncracked or insufficiently cracked nuts.

Abstract: A high production nutcracking apparatus wherein the nuts are fed from a hopper on a feed conveyor which has an upwardly inclined segment which passes through the hopper, a horizontal segment which leads to the cracking apparatus, and an arcuate transition juncture which is between the two segments. The feed conveyor includes a plurality of nut transport elements mounted in succession on a feed chain, and each transport element includes an upwardly facing receptacle for receiving a single nut which is then advanced to the cracking apparatus. To permit the apparatus to process relatively small nuts, such as pecan seedlings, the elements each include a longitudinal notch in an upper corner, and a spacer bar is fixedly mounted so as to occupy the notches of the elements as they move through the hopper. The nuts are singularized and oriented in the receptacles of the elements while being advanced on the feed conveyor.

Abstract: A high production nutcracking apparatus is provided wherein the nuts are fed from a hopper on a feed conveyor, and wherein the nuts are singularized and oriented while being advanced on the feed conveyor. The oriented nuts are thereafter advanced by the feed conveyor to a cracking apparatus, which comprises a plurality of cracking units mounted on a rotatable turret. The rotating cracking units are cyclically controlled so as to clampingly engage and lift each oriented nut from the advancing conveyor, and so as to preserve its orientation. The nut is then cracked and thereafter released at separate spaced points along the circular path of travel of the cracking unit. The nut feed conveyor comprises an upwardly inclined segment which passes through the hopper, and a horizontal segment which leads to the cracking apparatus.

Abstract: A cracking die assembly is disclosed which is adapted for use in a high production nut cracking apparatus of the type wherein a nut is held between an anvil and cracking die, and a shuttle then impacts against the rear end surface of the cracking die to sharply advance the cracking die and thereby crack the shell of the nut. The cracking die assembly includes a mounting sleeve having a bore with an internal shoulder, and a retainer mounted within a portion of the sleeve bore and having an opposing shoulder. The cracking die has a radial flange mounted between the two shoulders so as to permit limited movement in the axial direction, and a unitary annular resilient gasket is disposed between the flange of the die and one of the shoulders, with the gasket being designed to block passage of foreign substances past the cracking die, as well as to absorb at least a portion of the impacting force from the shuttle.

Abstract: A high production nutcracking method and apparatus is provided wherein the nuts are fed from a hopper on a feed conveyor, while being singularized and oriented in the hopper. The oriented nuts are thereafter advanced by the conveyor individually in succession to a cracking apparatus, which comprises a plurality of cracking units mounted on a rotatable turret. The rotating cracking units are cyclically controlled so as to clampingly engage and lift each oriented nut from the advancing conveyor, and so as to preserve its orientation. The nut is then cracked and thereafter released at separate spaced points along the circular path of travel of the cracking unit.

Abstract: A high production nutcracking method and apparatus is provided wherein the nuts are fed from a hopper on a feed conveyor, while being singularized and oriented in the hopper. The oriented nuts are thereafter advanced by the conveyor individually in succession to a cracking apparatus, which comprises a plurality of cracking units mounted on a rotatable turret. The rotating cracking units are cyclically controlled so as to clampingly engage and lift each oriented nut from the advancing conveyor, and so as to preserve its orientation. The nut is then cracked and thereafter released at separate spaced points along the circular path of travel of the cracking unit.