. Bulletin of the Department of Agriculture. Agriculture; Agriculture. CASTOR-OIL INDUSTRY. 11 after "wetting" the equipment. The acidity of the oil of the control (unheated) beans was per cent, while that of the heated beans was per cent, showing no deleterious action due to such heating. The color of the oil in both cases was the same. A type of heater used in this country for castor beans and known as a grain drier is illustrated in figure 2. This equipment, including the ac- companying racks (figs. 3 and 4), is con- structed entirely of galvanized steel plates, pre
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. CASTOR-OIL INDUSTRY. 11 after "wetting" the equipment. The acidity of the oil of the control (unheated) beans was per cent, while that of the heated beans was per cent, showing no deleterious action due to such heating. The color of the oil in both cases was the same. A type of heater used in this country for castor beans and known as a grain drier is illustrated in figure 2. This equipment, including the ac- companying racks (figs. 3 and 4), is con- structed entirely of galvanized steel plates, pressed into the desired shapes and cleated or riveted to- gether in sections, which are assembled and bolted together to build up any de- sired capacity. The bean-holding com- partments consist of a series of vertical racks made up of horizontal steel shelves (pitched bottoms) attached to vertical steel plates. These shelves are staggered opposite each Other in Such a Fig. 2.âA small assembled heater. It is to be noted that the lower â " j i , -1 cooling section is discarded when used for heating castor beans. manner that beans entering the upper end of the racks will descend through a zigzag course between the shelves and from one shelf to another until they are stopped at the bottom by a series of slides operated by rockshafts and levers. They will then pile up vertically without overflowing or leaking from the sides of the racks until the entire height of the racks is again full of beans, forming vertical zigzag layers with both sides entirely open. The beans do not pack in these vertical columns, for the reason that each shelf bears the load of the beans resting directly upon it and the weight is distributed equally throughout. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of
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