used: in this country 
- partments consist of 
bottoms) attached to 
CASTOR-OIL INDUSTRY. 2 stek 
after “‘wetting”’ the equipment. The acidity of the oil of the control 
(unheated) beans was 0.37 per cent, while that of the heated beans 
was 0.31 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 
for castor beans and 
known as agrain drier 
is illustrated in figure 
2. This equipment, 
including the ac- 
companying racks 
(figs. 3 and 4), 1s 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-holdmg com- 
a series of vertical - 
racks made up of 
horizontal steel 
shelves (pitched 
vertical steel plates. 
These shelves are 
staggered opposite 
each other in such q Fia.2.—A smallassembled heater. Itisto be noted that the lower 
manner tha t beans cooling section is discarded when used for heating castor 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 
