Automatic weighing and packaging apparatus

Claim 1

A WEIGHING SYSTEM COMPRISING A FIRST WEIGHING SCALE; A FIRST DIFFERENTIAL TRANSFORMER INCLUDING A FIRST ELEMENT MOVABLE IN RESPONSE TO THE DISPLACEMENT OF SAID SCALE AND HAVING AN OUTPUT PROPORTIONAL TO THE DISPLACEMENT OF SAID WEIGHING SCALE; A SERVO CONTROLLER COUPLED TO SAID FIRST DIFFERENTIAL TRANSFORMER AND HAVING AN OUTPUT RESPONSIVE TO THE OUTPUT OF SAID FIRST DIFFERENTIAL TRANSFORMER; A PLURALITY OF MEMORY UNITS EACH HAVING A SERVO MOTOR, AND A SECOND DIFFERENTIAL TRANSFORMER INCLUDING A SECOND MOVABLE ELEMENT CONNECTED TO SAID SERVO MOTOR; MEANS COUPLING SAID OUTPUT OF SAID SERVO CONTROLLER TO SAID SERVO MOTOR TO POSITION SAID SECOND MOVABLE ELEMENT TO INDICATE A WEIGHT APPLIED TO SAID FIRST WEIGHING SCALE; A LOCKING MECHANISM ASSOCIATED WITH EACH OF SAID MEMORY UNITS TO CAUSE SAID SECOND MOVABLE ELEMENT THEREOF TO LOCK IN POSITION; A SECOND WEIGHING SCALE; A THIRD DIFFERENTIAL TRANSFORMER HAVING A THIRD MOVABLE ELEMENT CONNECTED TO SAID SECOND SCALE TO PROVIDE AN OUTPUT RESPONSIVE TO THE DISPLACEMENT OF SAID SECOND SCALE; MEANS FOR CONTROLLING THE DISPLACEMENT OF SAID SECOND SCALE; AND MEANS COUPLING IN OPPOSITION TO SAID DISPLACEMENT CONTROLLING MEANS, THE OUTPUTS OF SAID THIRD DIFFERENTIAL TRANSFORMER AND ONE OF SAID SECOND DIFFERENTIAL TRANSFORMERS.