Abstract: A manifold which are widely applicable for oil pressure, water pressure or pneumatic pressure equipments is manufactured, instead of grinding or boring machining process on an ingot, by forming a fluid passage with a pipe group and casting this pipe group in a casting member or supporting the same with a surface plate or a base plate which may double as a surface plate, thereby achieving a light-weight manifold of a high precision and of a simple structure.

Abstract: A uniform-pressure press apparatus has a single or a plurality of liquid-in-pressure equalizing chambers independently provided in at least one of a pressure-receiving frame and a movable table to allow an operation surface to serve as a floating plate, thereby to correct any deflection produced in the pressure-receiving frame and the movable table.

Abstract: Disclosed is a pressure cylinder apparatus having a cylinder and a slidable member such as a ram or piston which is slidable back and forth in response to charging and discharging of fluid into and out of the cylinder, wherein that the said slidable member has a polygonal cross-sectional shape and that the said stopper assembly having an aperture of a polygonal shape corresponding to the polygonal cross-section of the slidable member is provided in the plane perpendicular to the direction of movement of the slidable member so that the stopper assembly prevents or limits the undesirable rotation of the slidable member during outward movement of the slidable member, and disclosed also is a hydraulic press incorporating the pressure cylinder apparatus stated above, and the end surface of the said slidable member is shaped and sized to conform with the press mold part to which the end surface portion is connected.