6 BULLETIN S57, U. S. DEPARTMENT OF AGRICULTURE. 



the diverting ducts and funnel, to fall into the lower pan through 

 a protected opening. The lower pan, also shown in figure 5, is a 

 simple receptacle with a handle and a pouring spout. 



Three detachable legs are provided to carry the lower cylinder, 

 and on these legs are supports for the upper pan. 



The device can be made of brass or block tin, but the material 

 used must be of sufficient stiffness to resist bending or denting under 

 working conditions. 



The primary purpose of this device is to divide an original sam- 

 ple into smaller portions, which may be analyzed without the undue 

 loss of time incident to handling a large sample, and to make this 

 division in such a manner that each small portion will correctly re- 

 tain the original proportion or percentage of the various factors 



Fio. 3. — A, Top view of lower cylinder showing cone and arrangement of ducts and 

 openings. B, Top view of upper cylinder showing hopper and gate (open). 



comprising the original sample. If the correct proportions of the 

 original factors are retained, it is not an indication of failure on the 

 part of the device if the grain or other material is not divided into 

 absolutely equal parts every time it is run through the sampler, the 

 essential feature being the retention of the correct proportion of the 

 factors of the original sample, 



OPERATION. 



After the device is set up with the cylinders, legs, and pans in 

 correct position, and the gate in the hopper closed and locked, the 

 sample to be divided is poured into the upper hopper. 



Then the gate should be opened and swung clear of the opening, 

 that the sample may fall through the opening in the hopper onto the 

 point of the cone, where it slides over the entire surface of the cone 



