Jacob Allen Schopfer, a 33-year-old resident of the American Rescue Workers on Elmira Street, has been locked up on assault related charges after he attacked another resident in the building on Friday night, punching him in the head, biting him on the right side of the face and strangling him by putting both hands around the victim’s neck, city police alleged in an affidavit. The assault only ended after other roommates intervened, police said. Investigators said Schopfer threatened to kill the man, who waited a day to tell staff about the incident. Following his arraignment Saturday before Biichle on charges of strangulation, terroristic threats, simple assault and harassment, Schopfer was jailed in lieu of $25,000 bail.