Abstract: A tail edge side part 50b of a plate 50 disposed on a cylinder surface of a plate cylinder 1 is pushed in a direction of an arrow 100 with a blade 39 rotated in a direction of an arrow 91. At that time, a tail edge side lower plate 6 maintains an initial position. And the tail edge side part 50b is clamped by closing a tail edge side upper plate 7 with a condition that the tail edge side part 50b is in contact with the tail edge side lower plate 6 by the rotation of the blade 39.

Abstract: A centrifugal separator comprises a follow rotor which is formed with a row of pores arranged circumferentially of the rotor and perforated, cylindrical film detachably received on the inner peripheral surface of the rotor. A mass of a semifluid material positioned within the film is splashed on to the inner surface of the film by a centrifugal force so that the liquid content of the material is passed through the film. The film is radially contracted by the liquid pressure developed between the film and the inner peripheral surface of the rotor and forms a cylindrical interstice between the film and the rotor, providing an additional filter medium through which the liquid is filtered and withdrawn from the pores. The rotor may be closed throughout its area and have a free longitudinal end from which to allow the liquid to withdraw. The centrifugal separator finds an application as a juice extractor if provided with a grating disc.

Abstract: Machine adapted to be incorporated in a refrigeration chamber of a refrigerator to make ice cream, comprising means for containing an ice cream mix in an agitation vessel and agitating the same, and means for causing an air layer on the outer surface of the agitation vessel to move. The provision of the air layer moving means is effective to promote heat exchange between the outer surface of the agitation vessel and the cold air in the refrigeration chamber by forcedly moving the air layer which might otherwise interfere with the exchange of heat between the outer surface of the agitation vessel and the cold air in the refrigeration chamber.