Gumball Machines! How do they work? Let’s find out…A gumball machine is a type of bulk vending machine that dispenses gumballs, usually for a small fee.Youtuber Animator of things Jared Owen explains a detailed breakdown Gumball Machine mechanism.
source/image(PrtSc): Jared Owen
A gumball machine consists of a clear sphere (originally glass, now most often plastic) which is filled with gumballs, sitting on top of a metal base.
It has a metal top on top of it with a keyhole in top of it so that the top can be removed and gumballs can be put in.
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The coin is inserted into the base and a handle is turned around clockwise 360 degrees, depositing the coin in the base of the machine and allowing a gumball or trinket to be dispensed into a chute at the bottom of the machine that is closed off by a little metal hanging flap./wikipedia