Test fixture for printed circuit boards having cam controlled sequential operators

Claim 1

A TEXT FIXTURE FOR GENERALLY RECTANGULAR PRINTED CIRCUIT BOARDS HAVING TERMINATED CIRCUIT PATHS THEREON COMPRISING: A FRAME, MEANS RIGIDLY MOUNTED TO SAID FRAME FOR SUPPORTING THE CORNERS OF A BOARD AGAINST DOWNWARD MOVEMENT, MEANS FOR ENGAGING THE PERIPHERY OF SAID BOARD TO CLAMP SAID CORNERS DOWN AGAINST SAID SUPPORTING MEANS, A VERTICALLY MOVABLE PLATE POSITIONED BELOW SAID SUPPORTING MEANS AND SAID ENGAGING MEANS, SAID PLATE INCLUDING A PATTERNED ARRAY OF ELECTRICAL CONTACTS FOR ENGAGING PREDETERMINED TERMINATIONS OF SAID CIRCUIT PATHS, CONNECTOR MEANS FOR ESTABLISHING ELECTRICAL CONTINUITY BETWEEN SAID CONTACTS AND AN ELECTRICAL TESTING MEANS, MEANS FOR MOVING SAID PLATE UPWARDLY TO ENGAGE SAID PREDETERMINED TERMINATIONS WITH SAID CONTACTS, SAID ENGAGING MEANS COMPRISING A PLURALITY OF GENERALLY VERTICALLY MEMBERS BEING PIVOTALLY MOUNTED TO SAID OF, SAID MEMBERS BEING PIVOTALLY MOUNTED TO SAID FRAME TO SELECTIVELY ENGAGE THE PERIPHERY OF SAID BOARD WITH SAID CLAWS, SAID PLATE MOVING MEANS FURTHER INCLUDING MEANS FOR SEQUENTIALLY PIVOTING SAID PIVOTAL MEMBERS AND THEN MOVING UPWARDLY SAID PLATE TO FIRST ENGAGE THE PERIPHERY OF SAID BOARDS WITH SAID CLAWS, TO CLAMP SAID CORNERS DOWN AGAINST SAID SUPPORTING MEANS AND THEN TO ENGAGE SAID TERMINATIONS WITH SAID CONTACTS, AND SAID PLATE MOVING AND MEMBER PIVOTING MEANS INCLUDES A PLURALITY OF CAMS FIXED TO A SHAFT MOUNTED ROTATABLY ON SAID FRAME, SAID CAMS BOTH MOVING UPWARDLY SAID PLATE AND PERMITTING PIVOTING OF SAID MEMBERS UPON ROTATION OF SAID SHAFT.