Abstract: A food handling conveyor apparatus includes a sound detection system for detecting the presence of a foreign object, such as a stone, among food product being conveyed. The apparatus includes a generally elongated vibratory conveyor bed along which food products are conveyed, with at least one discharge gate positioned at one end of the conveyor bed. An actuator is operatively connected to the discharge gate for effecting movement thereof between closed and open positions. A sound detection system of the apparatus, preferably including one or more directional microphones, is positioned in operative association with the conveyor bed and functions to differentiate between the sound of food product being conveyed, and the sound of a foreign object. The sound detection system is operatively connected with the actuator for the discharge gate, and effects opening of the discharge gate in timed relationship to detection of a foreign object so that the object is moved out of the food product stream.

Abstract: A base-excited vibratory conveyor includes an elongated conveyor trough, and an elongated support structure extending generally beneath the conveyor trough. A plurality of springs operatively interconnect the trough with the support structure, whereby vibratory drive of the support structure effects vibratory motion of the trough for conveyance of materials therealong. The support structure includes a plurality of cross-member assemblies which facilitate operative connection of the springs to the support structure, while enhancing the structural integrity of the support structure. The overall conveyor construction can be relatively lightweight in configuration, thus facilitating economical manufacture and operating efficiency.