Point plotting graphic recorder

Claim 1

IN A HIGH SPEED POINT PLOTTING GRAPHIC RECORDER HAVING A RECORD MEDIUM UPON WHICH POINTS ARE TO BE PLOTTED, IN COMBINATION THEREWITH OF A PRINTING APPARATUS FOR PRINTING SAID POINTS ON SAID MEDIUM AT A SPEED OF SEVERAL HUNDREDS OF POINTS PER MINUTE COMPRISING A BODY MOUNTED ADJACENT SAID MEDIUM, A LEAF SPRING RIGIDLY ATTACHED TO SAID BODY AT ONE LOCUS ALONG ITS LENGTH AND HAVING A PORTION EXTENDING FROM SAID LOCUS TO OVERLIE SAID MEDIUM; A CHARACTER PRINTER MOUNTED ON THE EXTENDING PORTION OF SAID SPRING AND, WITH THE SPRING IN AN AT-REST POSITION SPACED ABOVE THE MEDIUM AND HAVING A CHARACTER THEREON OF SUFFICIENT HARDNESS TO CAUSE A DISTINCT CHARACTER TO BE PRINTED; MEANS RESPONSIVE TO AN ELECTRICAL SIGNAL FOR APPLYING A FORCE TO SAID SPRING BETWEEN SAID LOCUS AND SAID PRINTER TO CAUSE THE SPRING TO FLEX DOWNWARDLY TO CAUSE THE CHARACTER PRINTER TO DELIVER A BLOW TO SAID MEDIUM AND IMPRINT THEREON; AND A BODY OF ELASTOMER BENEATH SAID MEDIUM AND POSITIONED RECEIVE THE DOWNWARD BLOWS OF SAID CHARACTER PRINTER TO CUSHION SAME AND TO SUPPLY A REBOUNDING FORCE TO SAID CHARACTER PRINTER TO CAUSE THE PRINTER AND SPRING TO MOVE RAPIDLY BACK TO THE SPRING''S AT-REST POSITION.