Digit number distributing system for pushbutton type telephone calling apparatus

Claim 1

IN A PUSHBUTTON TYPE TELEPHONE CALLING DEVICE OF THE TYPE INCLUDING A DIGIT NUMBER DISTRIBUTOR HAVING A WIPER CYCLICALLY SCANNING, ALWAYS IN ONE DIRECTION, A PLURALITY OF CONDUCTORS CORRESPONDING TO THE TOTAL NUMBER OF AVAILABLE DIGITS, DIALING CARDS CODED WITH THE RESPECTIVE CALL NUMBERS, CIRCUIT CONNECTIONS EFFECTED BY SELECTIVE OPERATION OF A RESPECTIVE DIALING CARD TO INITIATE CYCLICAL ACTION OF SAID DISTRIBUTOR TO SCAN THE RESPECTIVE CODED CALLED NUMBER, THE DISTRIBUTOR, IN EACH CYCLE, SCANNING ALL THE AVAILABLE DIGITS AND RETURNING TO THE CYCLE START POSITION WHILE STILL MOVING IN SAID ONE SCANNING DIRECTION, AND MEANS OPERABLE, UPON RETURN OF THE WIPER TO THE CYCLE START POSITION AT THE END OF A COMPLETE SCANNING CYCLE, TO DEACTIVATE SAID DISTRIBUTOR AND TO RESTORE THE SELECTED CARD TO AN INOPERATIVE POSITION: THE IMPROVEMENT COMPRISING MEANS BIASING SAID WIPER IN THE REVERSE DIRECTION TO THE CYCLE START POSITIONS; LATCHING MEANS RESTRAINING MOVEMENT OF SAID WIPER IN SAID REVERSE DIRECTION; AND RESTORING MEANS CONNECTED TO SAID LATCHING MEANS AND TO SAID DISTRIBUTOR AND OPERABLE, RESPONSIVE TO SCANNING OF A PRESELECTED NUMBER OF SAID CONDUCTORS SUBSTANTIALLY LESS THAN SAID TOTAL NUMBER OF AVAILABLE DIGITS, TO RELEASE SAID LATCHING MEANS FOR RETURN OF SAID WIPER IN SAID REVERSE DIRECTION TO SAID CYCLE START POSITION.