Printing mechanism for fluid meters

Claim 1

APPARATUS FOR CONTROLLING THE PRINTING WHEELS OF A PRINTING MECHANISM ASSOCIATED WITH A MEASURING DEVICE, SAID APPARATUS HAVING NUMBER INDICATING WHEELS INCLUDING A UNITS NUMBER INDICATING WHEEL, WHICH ARE DRIVEN BY THE MEASURING DEVICE, AND HAVING NUMBER PRINTING WHEELS COOPERATING WITH THE RESPECTIVE NUMBER INDICATING WHEELS, AND HAVING A FURTHER FRACTIONS-PRINTING WHEEL FOR COOPERATION WITH THE UNITS NUMBER INDICATING WHEEL, A ROTATABLE AUXILIARY DEVICE SELECTIVELY OPERATIVELY CONNECTING SAID UNITS NUMBER INDICATING WHEEL WITH SAID FRACTIONSPRINTING WHEEL, MEANS DRIVEN BY SAID UNITS NUMBER INDICATING WHEEL FOR STEADILY ADVANCING THE UNITS NUMBER PRINTING WHEEL COOPERATING THEREWITH AND FOR COINCIDENTLY ACTUATING SAID AUXILIARY DEVICE WHICH IS OPERATIVE IN INITIALLY IDLING MOTION TO ASSUME A POSITION CORRESPONDING TO THE RESPECTIVE FULL NUMBER OR FRACTION NUMBER POSITION ASSUMED BY SAID UNITS NUMBER INDICATING WHEEL, AND MEANS INDEPENDENTLY OPERABLE, IN THE EVENT THAT THE UNITS NUMBER INDICATING WHEEL HAS BEEN SET TO A FRACTION VALUE, FOR OPERABLY CONNECTING SAID AUXILIARY DEVICE TO SAID FRACTIONS-PRINTING WHEEL AND FOR ACTUATING SAID AUXILIARY DEVICE IN REVEARSE ORDER OF OPERATION BY AN AMOUNT CORRESPONDING TO THE DIFFERENCE BETWEEN THE FRACTIONAL POSITION OF THE UNITS NUMBER INDICATING WHEEL AND THE LAST ATTAINED FUL NUMBER THEREOF, THEREBY COINCIDENTLY RESETTING THE RESPECTIVE UNITS NUMBER PRINTING WHEEL TO THE FULL NUMBER ATTAINED LAST BY THE UNITS NUMBER INDICATING WHEEL AND SIMULTANEOUSLY SETTING THE FRACTION NUMBER ATTAINED BY THE ACCORDANCE WITH THE FRACTION NUMBER ATTAINED BY THE UNITS NUMBER INDICATING WHEEL, WHEREBY SAID PRINTING WHEELS ARE SET FOR PRINTING THE MEASURED UNITS AND FRACTIONS THEREOF