BULLETIN 287, U, S, DEPARTMEXT OF AGRICULTURE. 



circumscribes the cone. As is seen in figure 4, the outside funnel is pro- 

 vided with an aperture ((9) near its lower end, through which the spout 

 ( K) from the interior funnel passes. The space between the two fun- 

 nels directly over the spout from 

 the inside funnel is bridged with 

 an inverted V-shaped bridge (P) 

 in order to prevent the lodging 

 of material as it passes through 

 the apparatus. 



The outside funnel may be se- 

 cured to the upper and outside 

 part of the ducts by soldering or 

 riveting, or by any other suitable 

 or convenient means. The out- 

 side funnel is a sufficient distance 

 from the inside funnel to allow 

 the material to be sampled to 

 pass freely through the space be- 

 tween the two funnels. The 

 spaces E between the ducts at 

 the base of the cone constitute 

 unobstructed passageways from 

 the surface of the cone to the in- 

 terior of the outside funnel, as is 

 shown by the arrow N pointing 

 downward in figure 1. The 

 spaces between the ducts below 

 the base of the cone are closed, so 



Fig. 1.— A vertical cross section of the sampling + n.-nvnwn + qriTof the material 



device, showing the paths taken by the material in as tO prevent am Ol U1C iUd LUldl 

 passing from the hopper (A) to the receptacles which passes between the tWO 



ducts from bounding into the 

 inner funnel as it passes through the device. This is shown by V 

 in figures 1 and 2. 



As seen in figure 4, the device 

 is held in a fixed operative posi- 

 tion by means of three supports 

 or legs Q, which may rest upon 

 any solid base. The supports 

 are fastened to the outside funnel 

 at two points. They should be 

 so placed that one of them will 

 rest on the floor at a point half- 

 way between the two recepta- 

 cles, as is shown in figure 5. 

 The hopper at the top of the 

 device is held in position by three 

 supports R, which arc soldered or 

 riveted to the hopper and bolted 

 to the inside rim of the outside 

 funnel along its upper edge, each 

 support being fastened at a point 



Fig. 



2.— Cross section of the sampling deviceat the 

 base of the cone. 



S opposite to the upper part of the three lower supports or legs. 

 sd 1 hat t he peak of the cone is directly under 1 he 



The 

 hopper is so placed thai the peak of the cone is directly under the center 



of the opening at the bottom part of the hopper, so that the material 

 in passing through the device will spread evenly on all sides of the cone. 



