Coney Island (movie, 1928)

Tammany Burke, young owner of a giant roller coaster, is fighting heavy odds against a syndicate led by financial baron Hughey Cooper. Assisted by his sweetheart, Joan, and her father, Jingles Wellman, formerly a clown, Burke prepares for a sabotage of his machine by syndicate hirelings. In the midst of a great battle the riot squad arrives to arrest the troublemakers, and Burke and his sweetheart are left in happy possession of their roller coaster.