CHAP. VIII. 



CORN SCREENS. 



781 



samples with few impurities, or grown kernels, goes, they answer 

 their purpose very well, but they give the impression that those who 

 awarded the prizes to them had taken very little actual part in barn- 

 work. 



In fig. 346 we show one of Messrs. Tasker's winnowing machines 

 which is free from some of the drawbacks to which we have referred. 

 A very convenient labour-saving attachment is shown in the combined 

 corn-elevator, sacker, and weighing machine, which is driven from a 

 pulley receiving its motion from the winnower. Another advantage is 

 that the sieves are carried on wood-hangers, thus avoiding friction or 

 liability to get out of order. 



Fig. 349. Boby's Half-Corn and Round Seed Separator. 



Fig. 347 illustrates one of Mr. Boby's combined corn-dressing and 

 screening machines, which is a first-rate appliance. It has one of his 

 patent screens fixed in the place of the ordinary delivery board, thus 

 making an extra separation, which is a great advantage. 



The machine shown in fig. 348 is one which introduced a new word 

 into the English language; for farmers and corn-dealers, to express 

 themselves in reference to the operation of cleaning corn by this form 

 of screen, constantly speak of it as "bobying," thereby conferring 

 upon it a distinction not gained by any other screen. It is now 

 looked upon as a necessity, especially to barley growers and maltsters, 

 as it makes the most perfect separation of any of the ordinary 

 farm machines. The screen is made to reciprocate on wood-hangers 

 attached to a light frame, whereby the friction and wear which were 



