Photoelectric scanner for line tracing

Claim 1

A PHOTOELECTRIC SCANNING DEVICE COMPRISING A BEAM, MEANS MECHANICALLY SECURING SAID BEAMS FOR SWIVELING MOTION ABOUT A REGION OF SAID BEAM, POINTS OF SAID BEAM DISPLACED FROM SAID REGION BEING LATERALLY DISPLACEABLE A PHOTOSENSITIVE ELEMENT CONNECTED TO SAID BEAM AT A POSITION THEREOF WHICH IS LATERALLY DISPLACEABLE BY SAID SWIVELING MOTION, SAID ELEMENT BEING IN POSITION TO RECEIVE LIGHT TRANSMITTED GENERALLY AXIALLY OF SAID BEAM, MAGNET MEANS, HAVING OPPOSITE NORTH AND SOUTH POLES, CONNECTED TO SAID BEAM AT A POSITION WHICH IS LATERALLY DISPLACEABLE THE MAGNETIC AXIS BETWEEN THE POLES OF SAID MAGNET MEANS BEING ESSENTIALLY ALIGNED WITH THE AXIS OF SAID BEAM, AND MEANS MAGNETICALLY COUPLED TO SAID MAGNET MEANS TO PRODUCE VARYING PERIODIC MAGNETIC FORCES TO DISPLACE SAID MAGNET MEANS AND SAID ELEMENT PERIODICALLY ABOUT THE UNDISPLACED POSITION OF SAID BEAM, SAID FORCE-PRODUCING MEANS PRODUCING MAGNETIC FORCES GENERALLY AT RIGHT ANGLES TO THE MAGNETIC AXIS OF SAID MAGNET MEANS AND SAID FORCES BEING AT AN ANGLE TO EACH OTHER AND BEING PRODUCED TO VARY IN DISPLACED-TIME RELATIONAHIP SO THAT SAID MAGNET MEANS AND SAID ELEMENT TRACE A ROTATING PATH DEFINING WITHIN IT AN AREA OF APPRECIABLE MAGNITUDE.