Abstract: The invention organizes various pricing tables and price adjustment tables and various products and purchasing organizations based on "who" (i.e. which purchasing organization) is purchasing "what" (i.e. which product). The invention utilizes a denormalized table to relate the "who" to the "what" using denormalized numbers. The invention further organizes various purchasing organizations and products into hierarchical tables. These hierarchical tables are called organizational groups and product groups. Various price adjustments may be specified for each level of the organizational groups and product groups hierarchies. The price adjustments for a particular purchasing organization are determined by retrieving the price adjustments for that particular purchasing organization as well as the price adjustments for organizational groups above the particular purchasing organization in the organizational groups hierarchy.

Abstract: A conversion mechanism for selective conversion of a conventional mechanical fuel pump computer to selectively extend the unit volume price range of the computer while maintaining the rotational speed of the right hand cost and volume counter wheels of the computer within acceptable limits and mathematical correspondence of the volume counter readout with the cost counter readout and the established unit volume price. The conversion mechanism comprises cost and volume drive ratio selector mechanisms and one or more sets of single transfer, double transfer and quadruple transfer right hand cost counter wheels and a decimal point selector mechanism for shifting the decimal point of the unit volume price setting and/or cost counter readout.

Abstract: A conversion mechanism for selective conversion of a conventional mechanical fuel pump computer to selectively extend the unit volume price range of the computer while maintaining the rotational speed of the right hand cost counter wheels of the computer within acceptable limits. The conversion mechanism comprises a cost drive ratio selector mechanism and one or more sets of substitute single transfer and double transfer right hand cost counter wheels and provides for selectively and successively shifting the decimal point of the unit volume price range and cost counter readout and for establishing a cost counter drive ratio for each of the substitute right hand cost counter wheels.

Abstract: A fuel tank attachment which records the cumulative amount of fuel involved in successive fillings of the tank and also the fuel consumed between fillings, using two digital counters for this purpose, each being of the type that adds in one direction and subtracts in the other. The one counter that records fuel consumption requires this two-directional operational mode wherein it adds from "0" or other selected starting point as fuel is consumed, and subtracts back to "0" when the tank is filled. The other or cumulative counter, however, must be prevented from subtracting, or otherwise the record which it provides will be inaccurate. In accordance with the present invention, the cumulative counter is operated in its adding mode in a positive fashion by a first pawl and ratchet arrangement, and is prevented from operating in its subtracting mode, again in a positive fashion, by a second pawl and ratchet arrangement.

Abstract: Means for converting a fuel pump computer from a maximum unit volume price of 99 and 9/10 cents established by a conventional mechanical variator of the computer to a higher maximum unit volume price of either $1.49 and 9/10 cents or $1.99 and 9/10 cents and employing a selective adder mechanism installed in a mechanical register of the computer for manually selectively adding either $0.50 or $1.00 to a base unit volume price established by the variator.

Abstract: This disclosure is directed to an attachment for a limited range gasoline pump. Many gasoline pumps are limited in price range to $9.99. The apparatus comprises an attachment wherein the number one is located on the face of the pump to extend its range to $19.99, and a flag bearing a dollar sign is placed over the number one. The flag remains in position if the sale is $9.99 or less. If that value is exceeded, the flag is moved to the left to expose the one, keeping the dollar sign correctly located. Movement is controlled by a cam attached to the rotating number wheel which displays the dollar value. This wheel is mounted on a cross shaft. The attachment cooperates with the cross shaft to respond to movement thereof to provide a reset motion when the gasoline pump is reset to zero.

Abstract: A method and apparatus for distributing and controlling inventories of food items and the like in which a plurality of individual elements are coded to identify both a corresponding inventory item and a magnitude such as a price associated with that inventory item. A holder member for collecting together a selected group of the individual elements to enable identification of the corresponding food items ordered by a customer as well as sensing the total price thereof. Coding each element so that one dimension thereof extends in a predetermined direction a distance proportional to the price of the corresponding food item.