ES394791A3 - Control system for automatic selling machines. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Control systems for vending machines comprising means for detecting the money introduced in the machine and providing pulses of "money" corresponding to the value of said money; reversible pulse counter means, adapted to fit in a first condition, in which they are capable of making sums, and alternatively in a second condition, in which they are capable of performing subtractions; means for applying said "money" pulses to the reversible pulse counter means when set in the first condition mentioned, so that said counter means register the number expressed by said "money" impulses; a series of switching means for the selection of articles, adapted for selective operation according to the kind of article that the buyer wishes to acquire; means operable in response to the operation of said switch means to provide "price" pulses corresponding to the price of the selected article; means for applying said "price" pulses to said reversible counter means when they are adjusted for subtraction, so that the number expressed by such "price" pulses is subtracted from the number expressed by said "money" impulses and recorded in the means counters; means of delivery of money; means for applying subtraction pulses to said counter means when said subtraction has resulted in a positive number, so that said subtraction pulses are subtracted from the result of the first mentioned subtraction; and means operable in response to said subtraction impulses to drive said money delivery means for the purpose of delivering a quantity of money whose value corresponds to the number expressed by the subtraction impulses applied to the meter means, until the second subtraction mentioned has zero result. (Machine-translation by Google Translate, not legally binding)