Print wheel setting and control means in printing machines

A data recorder, comprising;

• a bed for holding a form to be imprinted;
• a platen carriage movable in a path across the bed from a start position to an actuated position to perform a printing operation and back to the start position to complete a printing cycle;
• a roller platen supported transversely of the path of the platen carriage;
• a plurality of rotatably positionable print wheels in the bed located for printing cooperation with the roller platen;
• positioning means for each print wheel movable in a path from a zero position to one of a plurality of selected printing positions for rotating the print wheel to a desired peripheral setting;
• reset means movable from an initial position to a final position for moving each of the positioning means from the selected printing position to the zero position;
• first actuator means on the reset means for moving the reset means from the initial to the final position in response to movement of the platen carriage to the actuated position;
• lock-out means including a locking lever movable from an inactive position to an active position for preventing subsequent movement of the platen carriage from the start to the actuated position;
• first biasing means for moving the locking lever from the inactive to the active position in response to movement of the positioning means to the zero position;
• second biasing means responsive to movement of the platen carriage from the actuated to the start position for moving the reset means to the initial position;
• and
• second actuator means responsive to movement of at least one of the positioning means from the zero position to a selected printing position for moving the locking lever from the active to the inactive position for permitting subsequent movement of the platen carriage through a printing cycle.