Abstract: An improvement of a sanitary chopping plate of the Ser. No. 08/284,854 application now U.S. Pat. No. 5,485,937, wherein it comprises at least a bottom disk having a plain plane and at least a chopping plate, and is characterized by that: the bottom of the chopping plate has a recess which is conformed in shape with the bottom disk for receiving the chopping plate; the bottom disk is structurally simplier and is easier and more convenient for manufacturing and processing, and more, cost of production thereof is largely reduced; the bottom disk further is provided with a plurality of annular and radiant grooves having heat sinking function, thereby the bottom disk can also be used as a defrosting plate.

Abstract: The chopping plate structure has a bottom disk and at least one chopping plate, wherein several feet are provided around the lower edge of the disk, an inclining surface is formed between each foot and the top edge of and a plain plane is formed by the top surface of the disk, and a groove is provided around the periphery of the plane; Further, the chopping plates each is formed of a thin slice declined from its center area toward its periphery then raised again to its end edge to form another inclining surface, a water collecting groove is formed at the periphery of the slice and corresponding to the groove of the disk, the groove and the water collecting groove are matched with each other, different slices are interchangeable in a simple and quick mode to be matchably and firmly put on the disk.

Abstract: An improved moldboard fastener includes mainly one ore more inner pull rod, two shower heads, two outer pull rods, two washers and two nuts. The shower head is made integrally of a concrete material having a great strength and is composed of a rod body having inner threads. The rod body, which is enclosed in the shower head, extends outwards for an appropriate length and comprises a flange extending in a direction opposite to an end of the shower head in such a manner that the flange is aligned with the end of the shower head. The inner pull rod is located between and fastened to the two shower heads while the two outer pull rods are fastened respectively to another ends of the two shower heads. The inner pull rod, two shower heads and two outer pull rods are held securely in place by means of the two washers and the two nuts. Upon the completion of the pouring operation of the concrete into the space defined by the moldboards, the inner pull rod and the shower heads are left in the concrete wall so built.