You simply pulled the lever causing the wheels to spin. The machine itself was mechanical in nature and operated by a series of levers and spinning reels. The inventor Charles Fey was a mechanical engineer who named the original slot machine the Liberty Bell. The first slot machine was built in 1895 in San Francisco. Vegas Slot Machine FAQs A Little Slot Machine History.Coin Operated Slot Machines – Best Coin Slots in Vegas.Problems with Coin Slot Machines in Las Vegas.Ticket In Ticket Out (TITO) in Las Vegas.Coin Operated Slots Along Fremont Street in Downtown Las Vegas.Vintage Coin Operated Slot Machines in Las Vegas.In this article, we'll tell you about: Toggle