Movement control apparatus

Claim 1

CONTROL APPARATUS FOR USE WITH A MACHINE HAVING MEANS FOR CONVEYING WORK PIECES ALONG A PREDETERMINED PATH AND MEANS FOR DRIVING SAID CONVEYING MEANS, AN OPERATING TOOL, MEANS FOR MOVING SAID OPERATING TOOL INTO AND OUT OF OPERATING POSITION RELATIVE TO A WORK PIECE, AT A FIXED WORK STATION IN SAID PATH, AND MEANS FOR DRIVING SAID OPERATING TOOL, COMPRISING, SENSING MEANS OPERATIVE FOR SENSING A WORK PIECE AT A PREDETERMINED POSITION OF THE WORK PIECE IN SAID PATH RELATIVE TO THE DIRECTION OF MOVEMENT OF SAID CONVEYING MEANS, PRIMARY CONTROL MEANS, MEANS RESPONSIVE TO SAID SENSING MEANS ON SENSING A WORK PIECE AT SAID PREDETERMINED POSITION FOR ENERGIZING SAID PRIMARY CONTROL MEANS, SAID PRIMARY CONTROL MEANS INCLUDING AN ACTUATING ELEMENT MOVABLE FROM A RETRACTED POSITION TO AN ADVANCED POSITION, COMMON MEANS FOR DRIVING SAID PRIMARY CONTROL MEANS WHEN ENERGIZED TOGETHER WITH AND AT A LINEAR SPEED UNIFORMLY PROPORTIONAL TO THAT OF SAID CONVEYING MEANS, SECONDARY CONTROL MEANS ACTUATABLE BY SAID ACTUATING ELEMENT WHEN MOVED TO ADVANCED POSITION UNDER THE CONTROL OF SAID PRIMARY CONTROL MEANS, AND MEANS CONTROLLED BY SAID SECONDARY CONTROL MEANS FOR ACTUATING SAID MOVING MEANS FOR MOVING SAID OPERATING TOOL INTO SAID OPERATIVE POSITION.