Abstract: A supply detecting device for money or equivalents capable of determines the presence thereof within a closed container.

Abstract: A coin receptacle assembly for vending machines. A funnel unit is positioned in the machine and a coin receptacle unit is adapted to be removably mounted on the funnel unit. The coin receptacle unit includes a secure door which is movable between an open position when the coin receptacle unit is mounted on the funnel unit, and a closed position when the units are separated. A lock arm engages against the secure door when the units are separated to prevent the secure door from being opened by an unauthorized person.

Abstract: An automatic hopper fill system for a coin dispensing machine. An auxiliary coin reservoir container is positioned entirely within the machine to perform the hopper fill function when the hopper becomes empty. The container includes an opening or chute which is normally blocked by an electro-mechanically controlled release door and opened electronically by a circuit which reads a hopper empty code generated to release the auxiliary coin reserve into the hopper. An indicator light is mounted on the external surface of the machine to indicate that the auxiliary container has released the coin reserve into the hopper so that the auxiliary container can be re-filled with coins at a convenient time.