ADI

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CONTROLS FOR THE TRACK FEEDING OF SMALL PARTS IN AUTOMATIC ASSEMBLY EQUIPMENT, AND PARTS THEREOF-NAMELY, FOR DETECTOR, ACTUATED PHOTOELECTRICALLY, FOR SENSING THE PRESENCE OF OBJECTS BY DIRECT OR REFLECTED LIGHT CAUSING THE ACTUATION OF A RELAY PRESELECTED TO RESPOND TO THE ABSENCE OR PRESENCE OF SUCH OBJECT, AND PARTS THEREOF; CAPACITANCE VARIANCE DETECTOR UNIT AND RELAY CONTROL CIRCUIT DESIGNED TO PRODUCE AN ELECTRICAL SIGNAL RESPONSIVE TO THE POSITION OR ABSENCE OF A PART; AND AN AIR FLOW DETECTOR UNIT, COMPRISING A PNEUMATIC SNAP ACTION CONTROL SWITCH DESIGNED TO PRODUCE AN ELECTRIC SIGNAL WHEN AN OBJECT INTERRUPTS THE FLOW OF AIR ACROSS AN OPENING, AND PARTS THEREOF