Reset signalling device for variable data printing machine

Claim 1

IN A VARIABLE DATA PRINTING MACHINE OF THE KIND COMPRISING A PLURALITY OF INDIVIDUAL TYPE DEVICES EACH SETTABLE TO A PLURALITY OF DIFFERENT POSITIONS TO PRESENT DIFFERENT TYPE CHARACTERS AT A PRINTING POSITION AND EACH INCLUDING A PLURALITY OF SPACED INDEX ELEMENTS ALIGNED WITH SIMILAR INDEX ELEMENTS OF THE REMAINING TYPE DEVICES WHENEVER SAID TYPE DEVICES ARE SET FOR A PRINTING OPERATION, AND IMPRINTING MEANS MOVABLE IN A PREDETERMINED DIRECTION ALONG A PREDETERMINED PATH IN ASSOCIATION WITH AN IMPRINTING OPERATION OF THE MACHINE TO IMPRINT A RECORDING SHEET ENGAGING SAID TYPE CHARACTERS, TO RESET SIGNALLING DEVICE COMPRISING: A PRINT SENSING ELEMENT INTERPOSED IN SAID PATH AND DISPLACEABLE FROM AN INITIAL POSITION TO A SECOND POSITION EACH TIME SAID IMPRINTING MEANS MOVES IN SAID PREDETERMINED DIRECTION ALONG SAID PATHH; A TYPE SET SENSING ELEMENT ENGAGING SAID INDEX ELEMENTS AND DISPLACEABLE FROM A FIRST POSITION TO A SECOND POSITION WHENEVER ONE OF SAID TYPE DEVICES IS SET TO A DIFFERENT TYPE SETTING; AND A BI-STABLE SIGNALLING DEVICE INCLUDING A LEVER ASSOCIATED WITH BOTH OF SAID SENSING ELEMENTS, SAID LEVER BEING ACTUATABLE UPON DISPLACEMENT OF SAID PRINT SENSING ELEMENT TO ITS SECOND POSITION TO A FIRST STABLE POSITION INDICATING THAT A PRINTING OPERATION SHOULD NOT PROCEED WITHOUT RESETTING OF THE TYPE DEVICES, AND BEING ACTUABLE UPON DISPLACEMENT OF SAID TYPE SET SENSING ELEMENT TO ITS SECOND POSITION TO A SECOND STABLE POSITION INDICATING THAT A PRINTING OPERATION MAY PROCEED; SAID SIGNALLING DEVICE FURTHER INCLUDING STOP MEANS INCLUDING A STOP MEMBER ASSOCIATED WITH SAID LEVER AND MOVABLE FROM AN INACTIVE POSITION TO AN ACTIVE POSITION IN RESPONSE TO MOVEMENT OF SAID LEVER TO ITS FIRST STABLE POSITION, SAID STOP MEANS INTERFERING WITH AND PREVENTING SAID MOTION OF SAID IMPRINTING MEANS UNTIL SAID STOP MEMBER IS RESTORED TO INACTIVE POSITION.