776 



THE COMPLETE GRAZIER. 



self -wiring, and bale-separating baling press for hay, straw, and other 

 materials. 



Corn Winnowers and Corn Screens. Winnowing machines are not 

 of quite so much importance as they were, now that threshing machines 

 are made to clean the corn thoroughly ; still it is impossible to dispense 

 with them, for it decidedly pays to put all corn on the market in the 

 most perfect condition ; and in the hurry of threshing it is often found 

 that the sample is not so clean as it might be. It is also better that 

 the corn from the various portions of the stack should be well mixed, 



Fig. 343. Barford & Perkins s Manual Lever Hay Press. 



so that the bulk may be uniform, and this is effected by means of. the 

 winnower. 



We enter a protest against two alterations which have been made as 

 improvements to meet the requirements of the show-yard. The first is 

 the introduction of wire in the place of perforated zinc, for making 

 screens. The advantage of wire is that it is possible to make the sieves, 

 and therefore the machine, smaller and more convenient for moving 

 through narrow barn-doors, than is the case when perforated zinc is 

 used ; for where perforations are made there must be a large amount 

 of the material left to maintain sufficient strength for the sieve to stand 

 the strain that is put upon it. The great disadvantage is that when corn 



