Line follower control apparatus

Claim 1

IN A LINE FOLLOWER CONTROL, A TABLE, A SENSING HEAD MEANS MOUNTING SAID TABLE AND SAID SENSING HEAD FOR RELATIVE MOVEMENT ALONG A PAIR OF DISPLACEMENT AXES, A TEMPLET ADAPTED TO BE MOUNTED ON SAID TABLE AND ORIENTED WITH RESPECT TO SAID SENSING HEAD SUCH THAT AN AXIS OF SAID HEAD IS IN ALIGNMENT WITH A LINE CONTOUR OF SAID TEMPLET, SAID SENSING HEAD INCLUDING PHOTOCELL DETECTORS ADAPTED TO BE POSITIONED AT A PREDETERMINED RELATIONSHIP WITH RESPECT TO THE LINE CONTOUR OF THE TEMPLET THROUGH RELATIVE MOVEMENT OF SAID TABLE AND SAID HEAD, MEANS CONTROLLED BY THE SIGNAL OUTPUT OF SAID PHOTOCELL DETECTORS TO PROVIDE A PAIR OF SIGNALS, DRIVE MEANS CONNECTED TO AND ENERGIZED FROM SAID SIGNALS FOR PRODUCING SAID RELATIVE MOVEMENT OF SAID TABLE AND SAID SENSING HEAD, SLOW DOWN CONTROL MEANS INCLUDED SAID DRIVE MEANS AND RESPONSIVE TO DEVIATIONS OF SAID SENSING HEAD FROM THE LINE CONTOUR OF SAID TEMPLET TO SLOW DOWN THE OPERATION OF SAID DRIVE MEANS, AND AUXILIARY MEANS INCLUDED IN SAID SENSING HEAD AND RESPONSIVE TO SEPARATE INDICIA ON SAID TEMPLET, SAID AUXILIARY MEANS BEING INCLUDED IN SAID DRIVE MEANS AND BEING EFFECTIVE TO MODIFY THE OPERATION OF SAID SLOW DOWN CONTROL TO STOP OPERATION OF THE DRIVE MEANS UPON SAID SENSING HEAD REACHING SAID SEPARATE INDICIA.