Line printer

Claim 1

IN A LINE PRINTER, THE COMBINATION COMPRISING: A PLURALITY OF PARALLEL COAXIAL ROTORS BEARING TYPE FACES ON THEIR PERIPHERIES; TORQUE MEANS TO URGE SAID ROTORS ONTO ANGULAR ROTATION ABOUT SAID AXIS IN A CHARACTER SELECTIVE DIRECTION; A CHARACTER SCANNING ROTOR; MEANS TO RETURN SAID ROTORS TO A HOME POSITION; AT LEAST ONE DECODING DISK; MEANS TO ROTATE EACH SAID DECODING DISK IN SYNCHRONIZATION WITH SAID CHARACTER SCANNING ROTOR DURING ITS SELECTIVE DIRECTION OF ROTATION; AT LEAST ONE ARCUATE BINARY DECODING CHANNEL ON EACH SAID DECODING DISK, EACH SAID CHANNEL HAVING ALTERNATE WINDOW SECTORS AND OPAQUE SECTORS; A GROUP OF GAS DISCHARGE TUBES CORRESPONDING TO EACH OF SAID TYPE FACE ROTORS, EACH TUBE BEING LOCATED ADJACENT TO A CODE CHANNEL IN SAID DECODING DISK; MEANS TO ELECTRICALLY IGNITE SELECTED ONES OF SAID GAS DISCHARGE TUBE GROUPS IN ACCORDANCE WITH A CODED LINE OF CHARACTER INFORMATION TO BE PRINTED; MEANS TO SUSTAIN THE DISCHARGE OF SAID TUBES AFTER SAID CODED IGNITION WHEREBY TO MAINTAIN A CORRESPONDING PATTERN OF LIGHT SIGNALS FROM EACH OF SAID GROUPS OF TUBES DURING SELECTIVE ROTATION OF SAID CHARACTER SCANNING ROTOR; A PHOTOELECTRIC CELL CORRESPONDING TO EACH SAID GROUP OF GAS DISCHARGE TUBES; OPTICAL MEANS TO CONVEY THE LIGHT PASSING FROM ANY DISCHARGE TUBE WITHIN A GROUP THROUGH A WINDOW IN SAID DECODING DISK CHANNEL TO THE PHOTOCELL CORRESPONDING TO THE SAID GROUP; A SEPARATE ELECTROMECHANICAL MEANS TO STOP THE SELECTIVE ROTATIONAL ADVANCE OF EACH ROTOR IN RESPONSE TO AN ELECTRIC STOP SIGNAL; AND MEANS CORRESPONDING TO EACH SAID PHOTOCELL RESPONSIVE TO THE INTERVENTION OF AN OPAQUE SECTOR OF SAID DECODING CHANNEL BETWEEN EACH ENERGIZED TUBE WITHIN THE CORRESPONDING GROUP AND SAID CORRESPONDING PHOTOCELL FOR GENERATING AN ELECTRIC STOP SIGNAL WHEREBY TO ACTUATE SAID ELECTROMECHANICAL STOP MEANS.