Visualizing internal structure

Claim 1

IN AN OSCILLOGRAPHIC RECORDER THE COMBINATION OF DISPLAY APPARATUS COMPRISING; A RECORDING STYLUS; PIVOTALLY MOUNTED FIXTURE MEANS ON WHICH THE STYLUS IS MOUNTED; A FIRST MOTOR HAVING AN OUTPUT SHAFT; A CAM ECCENTRICALLY MOUNTED ON THE SHAFT OF THE SAID FIRST MOTOR FOR ROTATION THEREWITH; PIVOTALLY MOUNTED FOLLOWER MEANS IN CONTACT WITH THE CAM; A FLEXIBLE LINKAGE OPERABLY INTERCONNECTING THE FOLLOWER MEANS AND THE SAID FIXTURE MEANS; CONTROL MEANS POSITIONED ON EACH SIDE OF THE PIVOTAL FIXTURE MEANS AND ARRANGED TO PROVIDE A VARIABLE INTERSPACE THEREBETWEEN; A SERVO MECHANISM INCLUDING A SECOND MOTOR HAVING AN OUTPUT SHAFT AND GEAR MEANS CONNECTED TO THE CONTROL MEANS FOR CAUSING MOVEMENT THEREOF, SAID SERVO MECHANISM ALSO COMPRISING; AN AMPLIFIER HAVING AN OUTPUT ELECTRICALLY CONNECTED TO THE SECOND MOTOR; AND A POSITION POTENTIOMETER HAVING A VARIABLY POSITIONED WIPER ARM MECHANICALLY COUPLED TO THE CONTROL MEANS AND MOVABLE THEREWITH AND ELECTRICALLY CONNECTED TO THE INPUT OF THE AMPLIFIER.