Abstract: A rotor for use in a disintegrating machine comprises a rotor body adapted to be rotated about its axis and provided at its periphery with a plurality of receptacles extending parallel to the axis, each receptacle having on one side an opening facing in the direction of rotation. The rotor further comprises a plurality of beater bars, each of which has a bar body extending in a direction which is parallel to the axis and has a symmetrical cross-section. Each bar body has at least one retaining extension supported in a respective receptacle, has a longitudinal plane of symmetry extending in a direction which is substantially parallel to a tangent to a flight circle defined by an outer periphery of the bar bodies of the beater bars upon rotation of the rotor body, and is provided with axially spaced apart knife edges which protrude at the periphery to be contiguous to the flight circle, are symmetrical to the plane of symmetry and extend in planes which are normal to the axis.

Abstract: A rotary jaw crusher comprises a rotor, which carries at least one revolving jaw and rotates within a housing about a horizontal axis of rotation, and a stationary jaw, which is fixed to the housing and is substantially disposed above the descending portion of the flight circle of the rotor and rises toward the charging opening of the housing opposite to the sense of rotation of the rotor with a small inclination from the horizontal and is provided with crushing bars or the like, which protrude toward the rotor. In order to achieve a high efficiency and a low susceptibility to wear, crushing bars having sharp edges are provided on the stationary jaw and extend approximately normal to the axis of rotation of the rotor.

Abstract: A hammer bar for use in a rotor of a crusher comprises a body, which is adapted to be mounted in the rotor to extend parallel to the axis of the rotos, and tools, which are detachably mounted on the body and comprise each at least one retaining rail extending in a longitudinally extending retaining groove formed in the body. To facilitate the insertion and removal of the tools, the body consists of two parts, which define between them a joint extending along and adjoining said retaining groove, and clamping means are provided for clamping said body parts against each other at said joint.

Abstract: A method and apparatus for adjusting the gap width between a rotatable crusher cone and a crusher housing includes determining a reference position of the crusher cone relative to the crusher housing, storing a first quantity representative of the reference position, rotating the crusher cone, moving the crusher cone to the reference position, moving the crusher cone from the reference position toward the crusher housing until a limit is reached and measuring the distance of the crusher cone from the reference position, storing a second quantity representative of the distance, repeating the preceding three steps a plurality of times while separately storing each of the second quantities, obtaining a new reference position based on each of the second quantities, and determining an operating position of the cone crusher based on the new reference position.

Abstract: An impact bar - adapted to assume an installed state in which it is mounted in a rotor of a comminuting machine - has a length extending generally radially as viewed relative to the rotary axis, a leading side and a trailing side as viewed relative to a direction of rotation, and a cross-sectional area taken along a sectional plane extending parallel to a plane of rotation. The cross-sectional area is curved in a generally C shape open towards the leading side and is symmetrical relative to a symmetry plane being generally perpendicular to the bar length. The cross-sectional area has a constriction lying in the symmetry plane. The trailing side is adapted to be supported against tangential forces at a location situated radially outwardly of the constriction as viewed relative to the rotary axis. The constriction is formed by a first and a second groove at the leading and trailing side.

Abstract: An impact crusher, especially for crushing stone, includes a housing (1) which comprises a delivery chute (5) for supplying the material to be crushed to a rotor (3) which has beater blades (4), rotates about a horizontal axis and with which rebound walls (7) are associated, which rebound walls (7) approach the rotor (3) in the region of the upper quadrant of the descending side of the rotor (3) and form, with the latter, a delivery opening (8) for the crushed material. One or more slipways (11, 12) project in the region of the delivery opening (8) from the rebound wall (7) towards the rotor (3) and form, with their upper edge, a guideway which extends from the delivery-opening (8) at a slight angle towards the horizontal and is guided upwards in a direction over the rotor (3).