A worthless fellow who tries to exist on other peoples resources.
1877. A system of local government controlled by bummers, loafers, and dead-beats.William Black, Green Pastures, p. 325. (N.E.D.)
1882. I suppose you ve piloted round and dry-nussed every tramp and dead-beat you ve met.F. B. Harte, Flip, ii. (N.E.D.)