Liberty Bell Slot

Charles Fey was the inventor of the first ever mechanical reel slot https://casinoaquarium.com/ which was invented in 1895. The car mechanic by trade, created a simple three reel spinning machine. The slot machine was made of 100 pounds of cast iron and featured 10 symbols on each reel with a diamond, spade or heart symbols on the reels in addition to a cracked liberty bell symbol.

The machine was pretty simple to use, and if a player lined up all three liberty bells it would award a payout of up to fifty cents, making it the first of its kind. Although there had been machines which were dubbed games of chance predating the Liberty Bell, they never had the ability to actually award a real payout. 

Due to current laws at the time, Fey was unable to patent his machine and wound up renting them to local saloons and pubs charging a 50% commission fee, additionally he used symbols for free drinks and/or awarded gum to get around the gambling laws which prohibited gambling machines.