US3142449A Lock structure for crusher
Lock structure for crusher adjustment Download PDF Info Publication number US3142449A US3142449A US212904A US21290462A US3142449A US 3142449 A US3142449 A US 3142449A US 212904 A US212904 A US 212904A US 21290462 A US21290462 A US 21290462A US 3142449 A US3142449 A US 3142449A Authority US United States Prior art keywords bowl ring adjustment main frame lock structure