A paper currency discriminating device which is improved to prevent the illegal extraction of paper currency more reliably. An impeller 10 associated in the rotating direction of timing belts 14 for transferring the paper currency is so disposed at the exit of a paper currency transfer passage 6 as to...http://www.google.de/patents/US5450937?utm_source=gb-gplus-sharePatent US5450937 - Paper currency discriminating device
