Abstract: An impact roll crusher for grinding up material, for example in mineral mining, employs a roll equipped with impact heads which co-operates with part of a conveyor transporting the material. The roll is rotatably mounted in a housing and a hood is connected to the housing to deflect and discharge the crushed material. The crusher roll is driven by a belt coupled to pulleys on the roll and on a drive motor shaft. The drive motor is supported by a bracket pivotably mounted on an inclined baffle wall of the hood. The roll drive adopts a position below the upper surface of the crusher housing. A tensioning device operable to adjust the tension in the drive belt is coupled to the bracket and adjusts the pivotable movement of the bracket.

Abstract: A mobile transfer station includes a support structure; a conveyor movably mounted on the support structure; and a feeder device located on one side of the conveyor, the feeder device including a box compartment for receiving bulk materials to be treated by the mobile transfer station and which is pivotally mounted on the support structure to be tilted relative to the conveyor to deposit bulk materials thereon, and metering humps mounted on the support structure and fitting within recesses in the box compartment, the metering humps having upper surfaces which are inclined downwardly toward the conveyor.