of hard impurities from the chopped meat the separator cutting assembly in accordance with the invention may be provided with two separation planes this is made possible by sequentially arranging two perforated separator discs 8 and pertinent separator knives as shown in fig4 this arrangement consists of five components i e the precutter 2 the knife 3 the first perforated separator disc 8 the separator knife 5 a second perforated separator disc 8 the first perforated disc 8 positioned in the center is similar to the second disc 8 disposed to the right of it except that it has not blind hole instead it is provided with an axial through bore corresponding in its configuration to the knife pin 14 as in the embodiment described previously removal of undesired meat components is accomplished by a discharge screw 6 at each of the separator discs 8 both screws 6 are removable in the manner previously described as regards the function of the apparatus the knife pin 14 is rotatably driven by the pressure and feed screw 1 and in turn drives the knives 3 and 5 at the same time the pressure and feed screw moves the raw material 15 forwardly into the first perforated disc where it is chopped by the knife 3 and where undesirable meat components are removed by the discharge screw into a first channel 12 the opening of which is controlled by a valve 13 thereafter.