Abstract: A method is disclosed for finishing a roughly shaped elliptical cylinder bore to an accurate final shape of predetermined major and minor axis. A circular cutter body with an effective diameter equal to the desired major axis. Then, a tilt angle is determined at which, when the circle of the cutter body is tipped away from the bore axis with the bore axis running through the center of the circle, a projection of the circle into a plane perpendicular to the bore axis will yield the desired minor axis. Then, the cutter body is powered about a secondary axis, at the tilt angle, relative to a bore primary axis and advanced linearly into the bore along the bore axis.

Abstract: An apparatus for effecting separation of filter plates within a filter press, which apparatus includes first and second filter plate engaging pawls pivotally mounted on a carrier which is supported for generally linear back and forth movement longitudinally of the filter press. The pawls have adjacent free ends which define thereon generally opposed abutment surfaces adapted for engaging opposite sides of a filter plate. One pawl is spring urged into a raised position, and this one pawl has an upper camming surface adapted for contact with a bottom surface on the filter plate to urge the first pawl into a lowered position. The other pawl is pivotally mounted in a manner free of springs, and has an upwardly projecting cam lug which defines the respective abutment surface on one side, and a camming surface on the other side.