Gasoline station accounting system

Claim 1

A gasoline station accounting system for independently and selectively accounting for the total volume of each of a plurality of grades of gasoline dispensed from a multiple grade gasoline station having a storage tank for each grade of gasoline and a plurality of independently operable gasoline pumps connected to the storage tanks such that each grade of gasoline is adapted to be dispensed from each of a plurality of pumps and wherein each pump comprises a volume meter for each grade of gasoline dispensed thereby, comprising a separate grade delivery recorder for each of the plurality of grades of gasoline; each said separate grade delivery recorder comprising recorder identification print means, a clock printing counter, a constant speed electric motor connected for driving the clock printing counter to maintain a current clock reading therein, a totalizer printing counter adapted to be driven for providing a volume reading, manually operable printing means for selectively providing a collective printout of the readings of the totalizer and clock printing counters and the identification print means, and parallel-to-serial drive means for driving the totalizer printing counter; an electrical pulse generator for each volume meter connected to the volume meter to be driven by the meter for generating a train of electrical pulses in accordance with the volume of the respective grade of gasoline dispensed, and connecting means connecting each parallel-to-serial drive means to the pulse generators for the respective grade of gasoline for operating the parallel-to-serial drive means with the pulse trains generated thereby to drive the respective totalizer printing counter in accordance with the total number of generated pulses of such pulse trains to maintain a current total volume reading in the totalizer printing counter of the respective grade of gasoline delivered by the gasoline station.