Projecting teleprinter with platen movable into and out of projection field

Claim 1

TYPEPRINTING APPARATUS INCLUDING A TYPEHEAD MOUNTED ON A CARRIAGE, MEANS FOR ROCKING SAID CARRIAGE AND TYPEHEAD TOWARDS PRINTING MEDIUM TO PRINT A CHARACTER THEREON AND FOR ROCKING SAID CARRIAGE AND TYPEHEAD AWAY FROM SAID PRINTING MEDIUM AFTER PRINTING OF SAID CHARACTER, A PAIR OF PIVOTS POSITIONED REARWARDLY OF A PRINTING POSITION, A PAIR OF ARM MEMBERS PIVOTALLY MOUNTED ON SAID PIVOTS RESPECTIVELY, A PLATEN BAR MOUNTED ON SAID ARM MEMBERS FOR VERTICAL MOVEMENT, AND MEANS FOR MOVING SAID PLATEN BAR FROM A REST POSITION IN WHCIH SAID PLATEN BAR IS RETRACTED BELOW A PRINTING POSITION TO SAID PRINTING POSITION IN WHICH IT SUPPORTS SAID MEDIUM PRIOR TO AND DURING A PRINTING OPERATION, AND FOR RETRACTING SAID PLATEN BAR FROM SAID PRINTING POSITION TO SAID REST POSITION AFTER SAID PRINTING OPERATION HAS BEEN EFFECTED, SAID PLATEN-BAR-MOVING MEANS BEING CONSTITUTED BY SAID CARRIAGE, MEANS BEING PROVIDED TO INTERCONNECT SAID CARRIAGE AND SAID PLATEN BAR SO THAT SAID PLATEN BAR IS MOVED FROM SAID REST POSITION TO SAID PRINTING POSITION AS SAID TYPEHEAD IS ROCKED WITH TH CARRIAGE THERETOWARD AND SO THAT SAID PLATEN IS RETRATED FROM SAID PRINTING POSITION AS SAID TYPEHEAD IS ROCKED WITH SAID PRINTING WARDS SAID REST POSITION., SAID LAST-MENTIONED MEANS COMPRISING A BAR MEMBER CARRIED BY SAID CARRIAGE AND MEANS CONNECTING SAID BAR MEMBER TO SAID ARM MEMBERS TO PIVOT SAID ARM MEMBERS IN RESPONSE TO MOVEMENT OF SAID BAR MEMBER BY SAID CARRIAGE.