A rotating disk is rotated about an upright axis to feed coins placed thereon toward a rotating body. The rotating body is formed with a spiral groove in which the periphery of each coin is inserted and a guide barrel is disposed in such a manner as to maintain the rising coins in the groove in the rotating...http://www.google.fr/patents/US4902263?utm_source=gb-gplus-shareBrevet US4902263 - Coin lifting device
