Abstract: A dump unit (12) for lifting and dumping a waste receptacle (14) into a compactor (10), said unit having slide bars (47) movable on vertical frame channels (21) and a hydraulic cylinder (38) for raising the bars (47). A face plate assembly (26,31,33) is pivoted on a cross bar (36) connecting the upper ends of said slide bars (47) and a second hydraulic cylinder (50) is mounted on a cross bar (49) connecting the lower ends of bars (47) and is operatively connected through linkage (59,63,35) to cross bar (36). A hooked lever (68) is pivoted on face plate (26) for engaging a bar (72) on the receptacle to lock it in inverted position, and a bell crank link (74) connects lever (68) to link (63) for automatically engaging bar (72) as the face plate assembly (26,31,33) is rotated on cross bar (36).

Abstract: A receptacle dumping mechanism having a frame (29,37,38) mounted on the drive shaft (26) of a rotary actuator (24) mounted on the side of a collector vehicle (18), a face plate (34) pivoted to the lower end of said frame and adapted to engage a shoulder (17) on receptacle (10) to lift the receptacle as the frame is rotated, link means (40) interconnecting said face plate with the mounting plate (25 or 27) for the actuator, at a point (40') eccentric of the drive shaft (26), hook levers (53) pivoted on the face plate (34) adapted to engage an abutment (52) on the receptacle (10) to lock it in inverted position, and bell crank links (56) operatively connecting the hook levers (53) to a cross bar (38) on the frame.