4 



8 BULLETIN 851, U. S. DEPARTMENT OF AGRICULTURE. 



gives, respectively, 125 grams and 875 grams; the fourth cut, 62.5 

 grams and 037.5 grams ; the fifth cut, 31.25 grams and 968.75 grams. 

 These weights may vary slightly in amount, as previously explained, 

 but this will not affect the accuracy of the portion. 



CARE OF THE DEVICE. 



As there are practically no moving parts to this device it requires 

 little care except to keep it clean. If the openings around the base 

 of the cone, or the ducts, are allowed to become choked or partially 

 clogged by pieces of straw, corncob, etc., the accuracy of the results 

 may be vitally affeqted. 



"With the present device it is a simple matter to lift out the upper 

 cylinder, examine the openings and ducts around the base of the 

 cone, and remove any obstructions lodged there. This precaution 



Fig. 5. — A, Upper pan, showing protected opening through which material passes to 



pan. B, Lower pan. 



should never be neglected, as it affects the correctness of the sample 

 and, by so doing, the analysis and grading of the grain in question, 



HOW TO OBTAIN THE SAMPLER. 



This device is covered by the same public-service patent as is the 

 original standard apparatus described in Department of Agriculture 

 Bulletin Xo. 287, and anyone in the United States is free to make 

 and use it without the payment of a royalty. 



A modified sampler made of block tin approximately 30 inches 

 high and 10 inches in diameter, with 20 partitions spaced 1 inch 

 apart around the base of the cone, which is considered a suitable size 

 for grain-grading purposes, is now on the market. The design is 

 so simple that any competent tinner or metal worker should be able 

 to make it at about one-third the cost of the standard " Boerner 

 Sampler." Working plans and specifications may be obtained from 

 the Bureau of Markets, U. S. Department of Agriculture, Washing- 

 ton, D. C. 



WASHINGTON : GOVERNMENT PRINTING OFFICE : 1920 



