Parnelli Jones Spins But Escapes InjuriesISLIP, N. Y. (AP) — Parnelli Jones, Winner of the Indianapolis 500 this year, spun into the guard rail during a midget auto race Wednesday night by escaped without injury.The accident occurred on the 29th lap of a U.S. Auto Cl lib 50-lap race.Jones, who started 18th, hadworked up to sixth when hebrushed the auto driven by Bob Wente, St. Louis, and spun into the rail. The race was won by Ronnie Duman, Dearborn, Mich., followed by Harry Bock Men-dota, 111., and Tom Copp, San Francisco,