The first Nickel-in-the-Slot machine, precursor of the modern Jukebox, was placed in San Francisco?s Palais Royale Saloon by Louis Glass and William S. Arnold in 1889. It was a coin operated Edison Class M Electric Phonograph in an oak cabinet which was patented by Glass and Arnold. This device had no amplification requiring patrons to listen with the aid of four listening tubes. Termed nickel-in-a-slot as a result of the coinage required to operate the device, the name eventually evolved into the term nickelodeon.