10 
BULLETIN 330. U. 
DEPARTMENT OF AGRICULTURE. 
by the elimination of the brown exterior bran coats. In some mills 
the rice is passed through a second set of hullers. 
Bran reel. — The bran reel receives the product from the hullers 
and separates the rice from the powdery bran. This reel is com- 
posed of a large octagonal framework covered with fine wire screen, 
the square meshes of which are IT per linear inch. The reel is set 
on a slight incline and its slow revolving motion takes the rice, which 
enters at the higher end. through its length of 9 feet in about 5 
minutes. As the reel 
revolves, the rice con- 
stantly falls from side 
to side and forces the 
bran through the wire 
covering. 
Pear-ling cone. — The 
pearling cone, which 
has recently been in- 
troduced in many mills 
to supplement the work 
of the hullers. is essen- 
tially the same ma- 
chine that is used in 
the pearling of barley. 
The principal working 
part of the machine is 
a frustrum of a cone 
covered with a compo- 
sition stone: this is 
surrounded by a sieve 
mantle composed of 
close - meshed h e a v y 
iron wire. The rice is 
fed from above be- 
tween the stone and 
the sieve and is thor- 
oughly rubbed before 
passing out at the bottom. The severity of the scouring is regu- 
lated by raising or lowering the stone, thus decreasing or increasing 
its distance from the wire screen. The best milling practice now 
approves the use of the pearling cone, because with its use the grain 
may be more gradually scoured than where the hullers alone are 
used and the breakage can also be kept lower. The loosely adher- 
ing bran resulting from the action of the pearling cone is removed 
from the rice in a bran reel. This bran is generally combined with 
Fig. 5. — A typical rice huller, showing its exterior construe 
tion, belting, hopper, feed, milled rice, etc. 
