Abstract: A comminuting machine for trash has a generally closed housing provided at its top with an inlet and its bottom with an outlet. A rotor is provided in the housing and has at least one radially extending beater element that orbits on rotation of the rotor in a predetermined sense about a horizontal axis. An impact member is provided in the housing generally above the axis and spaced radially from the orbit of the beater element, the inlet being upstream of this impact member relative to the rotational sense of the rotor. A crusher plate is pivotally mounted in the housing generally below and downstream of the impact member and may be pivotally displaced between an effective position spaced radially relatively close to the rotor and an ineffective position radially relatively far from the rotor. A grate is displaceable through a sidewall of the housing between a withdrawn position outside the housing and an operative position under and relatively closely spaced from the rotor at the outlet.

Abstract: Automobile tires and analogous articles of rubber or synthetic plastic material are frozen to make them brittle, and thereupon are fragmented in order to separate their rubber or synthetic plastic material from embedded reinforcements of textile or analogous fabrics. The fragmenting is carried out by dropping the articles into an impact mill in which a rotor equipped with striking elements turns about a horizontal axis, so that the articles are hit by the striking elements of the rotor and flung in circumferential direction of movement of the rotor against impact plates from which they drop back onto the rotor, whereby the articles are fragmented by the repeated hits and impacting. An apparatus for carrying out the method is also disclosed.

Abstract: Automobile tires and analogous articles of rubber or synthetic plastic material are frozen to make them brittle, and thereupon are fragmented in order to separate their rubber or synthetic plastic material from embedded reinforcements of textile or analogous fabrics. The fragmenting is carried out by dropping the articles into an impact mill in which a rotor equipped with striking elements turns about a horizontal axis, so that the articles are hit by the striking elements of the rotor and flung in circumferential direction of movement of the rotor against impact plates from which they drop back onto the rotor, whereby the articles are fragmented by the repeated hits and impacting. An apparatus for carrying out the method is also disclosed.