draining plow

A ditch-digging plow. draining-pot, s. Sugar Manufac .: An inverted conical ve el in which wet sugar is placed to drain. draining-pump, s . A pump ( pompe cast raise) for elevating water containing sand and gravel. The single cylinder is open both at top and bottom, and is traversed by a piston without a valve. The cylinder is inclosed in a larger ve el, water-tight, which is itself filled with water. This larger ve el is divided into two equal parts vertically, by a partition which joins the working cylinder, so that the cylinder itself forms a part of the division. One extremity of the cylinder communicates with the cavity on one side of the partition, and the other with the opposite. The four valves are large balls of india-rubber, loaded in the interior with lead. They are contained in separate boxes by the side of the principal box, and are in communication by pairs with the two cavities into which that box is divided.