Wheel striking data printer

Claim 1

A DATA PRINTER COMPRISING A PLURALITY OF AXIALLY ALIGNED PRINT WHEELS, SAID WHEELS HAVING TYPE CHARACTERS THEREAROUND, MEANS COMPRISING A SHAFT FOR ROTATING SAID WHEELS TO LOCATE SELECTED ONES OF SAID TYPE CHARACTERS AT A PRINTING LINE, SAID WHEELS BEING INDEPENDENTLY MOVABLE TRANSVERSELY OF SAID SHAFT, A FIRST CARRIAGE MOVABLE ALONG SAID SHAFT INTO DIFFERENT POSITIONS, ACTUATING MEANS COMPRISING AN ACTUATOR MOVABLE BY SAID CARRIAGE AND ADAPTED TO MOVE AN ALIGNED ONE OF SAID WHEELS TRANSVERSELY OF SAID SHAFT WHEREBY TO IMPRINT A SELECTED TYPE CHARACTER ONTO A RECORD MEDIUM; A SECOND CARRIAGE FOR MOVING SAID WHEELS AS A UNIT INTO DIFFERENT POSITIONS ALONG SAID SHAFT RELATIVE TO SAID ACTUATOR, MEANS FOR MOVING SAID SECOND CARRIAGE INTO DIFFERENT POSITIONS RELATIVE TO SAID FIRST CARRIAGE, GUIDE MEANS INCLUDING A SECOND SHAFT FOR GUIDING SAID FIRST CARRIAGE, MEANS FORMING AN OPERATIVE CONNECTION BETWEEN SAID SECOND SHAFT AND SAID ACTUATOR, AND MEANS FOR ROCKING SAID SECOND SHAFT WHEREBY TO OPERATE SAID ACTUATOR.