The present invention contemplates a convertible dispensing system for selectively dispensing liquids and particulate solids. The dispensing system includes a tank structure, with selectable particulate solids dispenser and a liquid dispenser, both positioned generally at the lower extent of the tank...http://www.google.com.au/patents/US4949906?utm_source=gb-gplus-sharePatent US4949906 - Convertible dispensing system
