LOS ANGELES -- The Los Angeles Dodgers signed infielder Josh Bell and pitcher Sam Demel to minor league contracts and invited both players to spring training, the team announced Monday.Bell, originally signed by the Dodgers, has played in 100 major league games over three seasons for the Baltimore Orioles and Arizona Diamondbacks. A career .195 hitter, the 25-year-old has played mostly third base. He and Brendan Harris, who had previously been signed to a minor league deal, will compete for a bench spot.