Mechanical Device
A money changer (or coin changer or coin dispenser) is a device that changes or dispenses coins. It can take various forms. One type is a portable coin dispenser, invented by Jacques L. Galef, often worn on a belt, used by conductors and other professions for manual fare collection. It dispenses a single coin when a lever is depressed. Another type is a fixed coin dispenser that dispenses several coins at once, such as four quarters or five nickels, for making change at a venue for coin-operated devices, such as a penny arcade, pinball parlor, or Automat. It is typically mounted in a manned booth or counter. A third type, sometimes called a "change maker" or "Automatic Cashier", has an array of 100 or more buttons that dispense exact amounts of change from 1¢ to $1.00. These are typically found at teller windows in banks and sometimes in retail establishments. This type of change maker may also operate electromechanically under control of a cash register, automatically giving correct change for a customer's purchase.
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