Abstract: A mill (10) for grinding garbage or like material is disclosed including grinding rotors (48-50) rotatably fixed to and longitudinally adjustable on a shaft (44) rotatable in a grinding chamber (26). Each of the rotors (48-50) include a multiplicity of arms (64) extending radially from a circular disc (54). The arms (64) have replaceable tips (284) including first and second legs (288, 290) forming an L-shaped body portion. First and second bolts (308) extend through apertures (310) in the arm (64) and are threaded into apertures (312) in the first leg (288). A third bolt (314) extends through a counterbore (320) and an aperture (316) in the second leg (290) and is threaded into aperture (318) of the radially outer end of the arm (64). Material anti-wrap provisions (140) in the form of wing plates (240) oriented to extend generally radially from the shaft (44) are provided between the top plate (28) and the first rotor (28) and also between the rotors (48-50).

Abstract: A mill (10) for grinding garbage is disclosed including an octagonal shaped grinding chamber (26). Grinding rotors (48-50) are rotatably fixed to a rotatable shaft (44). An impeller rotor (51) is also rotatably fixed to the shaft (44) below the grinding rotors (48-50). The impeller rotor (51) discharges a stream of air, entrapped material, and projectiles into a projectile deflection device (182) which includes an upwardly sloping bottom plate (202) which deflects the projectiles into an end plate (204) to reduce the kinetic energy thereof. The air stream and entrapped material pass from the projectile deflection device (182) into a plenum (210) which reduces the velocity of the air stream to release much of the entrapped material, with the material release being enhanced by baffles (224) providing a tortuous path for the air stream in the plenum (210) before it enters a cyclonic material separator (216).

Abstract: A drive device (140) for the rotatable shaft (44) of a mill (10) is disclosed including first and second, diametrically opposed carriers (142). In each of the carriers (142), the ends of first and second bearing plates (152, 154) and of a motor plate (176) extend through parallel slots (148-150) formed in parallel, first and second housing plates (144) and are secured to adjustment plates (164) located outside of and slideable on the housing plates (144). Screw mechanisms (168) extend between and adjustably relate the housing and adjustment plates (144, 164) to provide relative sliding therebetween. A jack shaft (156) rotatably mounted by first and second bearings (158, 160) carried by the bearing plates (152, 154) includes a sheave (162) located intermediate the bearing plates (152, 154). A motor (180) is mounted to the motor plate (176) and has an output shaft (182) coupled to an end of the jack shaft (156) to avoid overhung loads to the motor (180).

Abstract: A device (10) for continuously tearing bags containing material such as refuse is disclosed including elongated, flexible flails (14) secured to a rotatable rotor (12). The flails (14) are formed in the preferred form from steel wire rope cables (28) having their free ends captured within thick wall tubing (34) swedged thereon. In addition to keeping the ends from fraying, the tubing (34) acts as a centrifugal weight and hammer for the cable (28). The rotor (12) is formed of L-shaped plates (16) attached together to extend quadrantly from and form a square tubular beam surrounding the axis of rotor (12). The flails (14) extend through apertures (36) formed in the leg portions of the plates (16) defining the square tubular beam and are secured to the leg (18) of the plates (16) spaced from the square tubular beam by cable clamps (38) having U-shaped bolts (40) extending through apertures (50) formed in the legs (18).