Differential type wheel setting means in signal controlled platen press

Claim 1

A PRINTING MECHANISM COMPRISING, A PLURALITY OF TANDEM CONNECTED DIFFERENTIALS, EACH OF SAID DIFFERENTIALS HAVING A FIRST AND A SECOND BEVEL GEAR WITH THE SECOND BEVEL GEAR OF EACH DIFFERENTIAL CONNECTED TO THE FIRST BEVEL GEAR OF THE NEXT DIFFERENTIAL, A SPIDER ASSEMBLY INCLUDING AT LEAST ONE BEVEL GEAR ROTATABLE THEREON AND MOUNTED FOR ROTATION BETWEEN THE FIRST AND SECOND BEVEL GEARS OF EACH DIFFERENTIAL; MEANS RESPONSIVE TO A CODED ELECTRIC SIGNAL FOR SELECTIVELY ROTATING A PREDETERMINED DISTANCE THE FIRST BEVEL GEAR OF THE FIRST DIFFERENTIAL AND ALL OF THE SPIDER ASSEMBLIES TO PROVIDE A ROTARY OUTPUT AT THE SECOND BEVEL GEAR OF THE LAST DIFFERENTIAL WHICH CORRESPONDS TO THE SUM OF THE INDIVIDUAL MOVEMENTS OF THE SPIDER ASSEMBLIES AND THE FIRST BEVEL GEAR OF THE FIRST DIFFERENTIAL WHICH ARE MOVED IN RESPONSE TO THE CODED ELECTRIC SIGNAL; TYPE BEARING MEANS RESPONSIVE TO SAID ROTARY OUTPUT WHEREBY SAID TYPE BEARING MEANS IS POSITIONED TO CORRESPOND TO THE CODED ELECTRIC SIGNAL; PLATEN MEANS LOCATED ADJACENT SAID TYPE BEARING MEANS; AND MEANS FOR URGING SAID PLATEN TOWARD SAID TYPE BEARING MEANS AFTER SAID TYPE BEARING MEANS HAS BEEN POSITIONED BY THE ROTARY OUTPUT TO CORRESPOND TO THE CODED SIGNAL.