History of Slot Machines
The first slot machine , aka ,one armed bandit, was invented in 1887 by Charles Fey of San Francisco, who created a much simple machine.Because of the large amount of potential wins with the original poker card based game, it proved was impossible to come up with a way to make a machine capable of making an automatic pay-out for all winning combinations. Charles Fey created a machine with three spinning reels containing a total of five symbols , horseshoes, diamonds, spades, hearts and a Liberty Bell, which also gave the machine its name. By replacing ten cards with five symbols and using three reels instead of five drums, the complexity of reading a win was considerably reduced, allowing Fey to devise an effective automatic payout mechanism. Three bells in a row produced the biggest payoff, ten nickels. Liberty Bell was a huge success and created the gaming machine industry. Even when the use of these gambling devices was banned in his home state after a few years, Fey still couldn't keep up with demand for the game elsewhere.
Sittman and Pitt of Brooklyn, created a gambling machine in 1891 which was a frontrunner to the modern slot machine. It contained five drums holding a total of 50 card faces and was based on poker. This machine was extremely popular and soon many bars in the city had one or more of the machines bar-side. Players would insert a nickel and pull a lever, which would spin the drums and the cards they held, the player hoping for a good poker hand. There was no direct payout mechanism, so a pair of kings might get the player a free beer, whereas a royal flush could pay out cigars or drinks. To make the odds better for the house, two cards were typically removed from the deck: the ten of spades and the jack of hearts, which cut the probability of winning a royal flush by half.
Another early machine gave out winnings in the form of fruit flavored chewing gum with pictures of the flavors as symbols on the reels. The popular cherry and melon symbols derive from this machine. The BAR symbol now common in slot machines was derived from an early logo of the Bell Fruit Gum Company. The payment of food prizes was a commonly used technique to avoid gambling laws .
In 1963, Bally developed the first fully electromechanical slot machine called Money Honey. The new electromechanical approach allowed Money Honey to be the first slot machine with a bottomless hopper and automatic payout, of up to 500 coins, without the help of an attendant. The popularity of this machine led to the increasing predominance of electronic games, and the side lever soon became just part of the machine not necessarily the only way to play.
The first video slot machine to offer a second-screen bonus round was Reel 'Em In developed by WMS Industries Inc. in 1996.
