Abstract: This invention is an improvement in a stationary or mobile receiving bunker adapted to be fed with bulk material, particular by means of industrial trucks, with a delivery conveyor arranged under the receiving bunker, the improvement which comprises two bunker walls enclosing the receiving bunker chamber on the side away from the direction of delivery, with straight lines running through their top edges and projected onto a horizontal plane each forming an angle .alpha.<90.degree. with the longitudinal axis of the delivery conveyor also projected onto the horizontal plane.

Abstract: The invention consists of a stockpile reclaiming apparatus for discharging bulk material from a bed. The apparatus comprises a bridge which extends over the width of the stockpile, a support frame work, which is mounted from the bridge and a discharging means mounted on the frame work. The discharge means consists of an endless traction means and a series of discharge elements attached to the endless traction means. This endless path is disposed in a plane inclined to the bed of the stockpile whereby an acute angle is formed between this inclination and the plane of the bed.

Abstract: This invention relates to an improvement in a single-roll crusher having a housing, a roll body freely rotatably supported on an eccentrically rotatable drive shaft in said housing, at least one laterally mounted crushing beam pendularly suspended in the upper part of said housing and resting in the lower region thereof at approximately the height of the roll body axis, by means of a pressure bar, against a prestressed set of springs solidly integrated in the crusher housing in order to absorb the crushing force, the prestressing force also being adjustable when the set of springs is integrated and the gap adjustment at the exit of the crushing space is achieved by changing the spacer thickness between the pressure bar and a spring retainer, the improvement comprising bayonet lock means holding the prestressed set of springs in the crusher housing, the prongs and mating prongs of said bayonet lock means mutually engaging and releasing each other in assembly and disassembly, and key means pressing the support

Abstract: This invention relates to an improvement in a roll crusher which crushes loaded material by impact and pressure, comprising a crusher housing, a loading hopper, a rotatable roll holding impacting tools, and fixed or adjustable crushing bars mounted to the crushing wall of the crusher housing, the improvement comprising two mutually oppositely rotatable rolls, each independent of the other and adapted to crush the material, mounted together with two oppositely located crushing walls in one common crusher housing, and a roof-like chute means mounted above a gap between the two rolls and adapted to distribute the material in the hopper and feed it to crushing regions.