Léon Gaumont applied for a patent for the Chronophone, his invention for presenting motion pictures with sound, with a projector (a Chrono-Bioscope or cinematograph) and a phonograph (the Cyclophone) being synchronized "by two coupled electrical motors, with the phonograph determining the speed" [REF].
Temperatures across the Midwest and the Deep South went into triple digits in the United States even as the heat wave in the East abated.