A man accused of robbing two Bangor banks of $1,500 in less than a week around Christmas pleaded not guilty Wednesday to federal charges in U.S. District Court. Timothy Myers, 27, is charged with two counts of robbery in connection with a Dec. 21 robbery at the TD Bank on Stillwater Avenue and a similar robbery five days later at the KeyBank branch on Bangor Mall Boulevard. Myers was arrested at an Ellsworth motel on Dec.