Adjustable pulp outlet for juice extractor

An apparatus for separating liquid and residual matter from a material comprising a case having upper, lower and lateral sides and opposite end walls and having a bore with an inner peripheral surface, said case being provided on the upper side with a material inlet opening communicating with said bore, with a juice outlet opening on the lower side having a filter and communicating with said bore, and with a residual matter outlet opening formed on one lateral side and communicating with said bore, a rotary member rotatably mounted in said bore and having a spiral cutting blade portion for cutting material to be processed which is inserted into the bore through the material inlet opening and a pressing portion continuing from said cutting blade portion for pressing the material to be processed, said rotary member feeding said material to be processed toward an end of the bore while cutting and pressing the material to be processed, an adjusting open and close member which is arranged on the outside of the bore adjacent the residual matter outlet opening and movable between one position wherein it effects substantial closure of said residual matter outlet opening and another position wherein it effects opening of said residual matter outlet opening, said member defining an exit opening smaller in area than said residual matter outlet opening through which residual matter can flow when said member is in its one position, and biasing means operatively connected to said member to bias said member toward said one position, said member being urged by pressure of residual matter discharged from said residual matter outlet opening to effect opening of the residual matter outlet opening.