Dictating machine

Claim 1

INA PHONOGRAPHIC MACHINE INCLUDING A ROTATABLE RECORD SUPPORT AND A RECORD COOPERABLE TRANSLATING DEVICE, AND MEANS MOUNTING SAID TRANSLATING DEVICE FOR TRAVELING MOVEMENT RELATIVE TO THE RECORD SUPPORT: THE COMBINATION OF A DRIVE SYSTEM FOR ROTATING SAID RECORD SUPPORT AND FOR CONCURRENTLY PROGRESSIVELY ADVANCING SAID TRANSLATING DEVICE TO CAUSE SAID TRANSLATING DEVICE TO DESCRIBE A HELICAL TRACK OF UNIFORM PITCH ON A SUPPORTED RECORD, A SCAN MECHANISM OPERABLE SELECTIVELY TO BACKSPACE AND ADVANCE SAID TRANSLATING DEVICE ACROSS TRACK WHILE SAID RECORD SUPPORT IS AT STANDSTILL, CONTROL MEANS FOR SAID SCAN MECHANISM COMPRISING A PLAYBACK CONTROL FOR ACTIVATING SAID SCAN MECHANISM IN A BACKWARD DIRECTION, A FORWARD SCAN CONTROL AND MEANS TIMED WITH SAID SCAN MECHANISM FOR MAINTAINING OPERATION THEREOF AFTER RETURN OF EITHER OF SAID CONTROLS TO A STOP POSITION UNTIL COMPLETION OF MOVEMENT OF THE TRANSLATING DEVICE THROUGH THE TRACK PITCH INTERVAL THEN UNDERWAY WHEREBY EACH SCAN MOVEMENT IS LIMITED TO AN INTEGRAL NUMBER TO TRACK PITCH DISTANCES, AN ADVANCE MARKER MEANS FOR SAID TRANSLATING DEVICE INCLUDING A FIRST MARKER SWITCH OPERATED BY THE TRANSLATING DEVICE WHEN THE SAME IS AT LEAST ONE FULL TRACK PITCH DISTANCE FROM ITS PRIOR POSITION OF FARTHEST ADVANCE, AND MEANS RENDERED OPERATION BY SAID FIRST MARKER SWITCH DURING A FORWARD SCAN OPERATION FOR STOPPING SAID SCAN MECHANISM WHEN SAID TRANSLATING DEVICE REACHES ITS NEXT INTRACK POSITION AND FOR THEREUPON STARTING SAID DRIVE SYSTEM.