A MODIFIED BOERNER SAMPLER. 5 
stream of material falls into one pan, while the alternate streams are 
diverted into the other pan, thus dividing the original material 
(sample) into two 
equal parts. The 
separation of the 
streams 1S  accom- 
plished by leaving 
the openings _ be- 
tween the _ radial 
partitions unob- 
structed in every 
other space, and in 
the alternate spaces, 
between those left 
clear, providing bot- 
toms which, with 
the partition as 
sides, form diverting 
ducts. The streams 
of material passing 
through the unob- 
structed openings 
fall directly into the 
upper, pan. ~The 
streams passing 
through the ducts 
are diverted into a 
funnel, shown in fig- 
ure 4, which collects 
the streams from all 
the ducts and dis- 
charges them as one 
stream (which is 
one-half of the 
original material) 
into the lower pan 
through a protected © 
opening in the up- 
per pan.. 
The upper pan, 
Ulustrated in figure 
5,is designed so that 
it catches and holds 
Fic. 2.—Side view of complete device. 
the half of the material passing through the unobstructed openings, 
but permits the other half of the material, which has passed through 
