610 



ImjyJement Show at Bury St. Edmuncts. 



the samj)lo. produced by Hornsby's screen removed every doubt as to the 

 award. This new rotary screen consists of a simple cylinder of coiled wire, 

 like the ordinary fixed-mesh screens that have been Ions; used, but instead of 

 the cross-bars being placed longitudigally, they are placed diagonally, in a 

 serpentine form, and each separate coil of wire is lapped or bound round the 

 outside of them in the ordinary way of wire-stitching. Then by bringing 

 the adjusting screw to act upon the whole cylinder it is contracted or expanded 

 equally from end to end, and thus easily adjusted to suit grain of any size. 

 The large and cumbersome sheet-iron screw, formerly used to conduct the 

 grain along and to diffuse it over the screening surface is dispensed with, the 

 inner serpentine bars answering the same purpose, and thus giving lightness 

 and strength, great simplicity with durability. This machine aflbrds a large 

 screening surface without complication of parts. 



Three com^:)etitors being very anxious to have their screens tested with 

 harley, we allowed the competition, supplying each with one bushel for the 

 trial. The sample produced from the same descri23tion of rough corn was 

 decidedly in favour of Mr. Boby's screen ; but this second experiment more 

 fully convinced us of the already proved superiority of principle and con- 

 struction in Hornsby's, with its ready adaptation and its ample cylindei'. 

 Mr. Poyser's machine indicates the clever and ingenious mind of its inventor : 

 its value is no doubt duly appreciated in the celebrated granaries at Burton, 

 but when placed on the same lower but level trial-ground at Bury, we failed 

 to discover preponderating merit, for in the trial both of wheat and barley 

 the division of corn was not made as described, " i7i the most 2Krfect manner I " 

 Much good grain was delivered in the spoutings, and the sample was decidedly 

 inferior to Mr. Boby's. Mr. Poyser's screen, however, deserves honom-able 

 mention for some clever and peculiar arrangements for separating both broken 

 corn and coarser substances fi-om the best grain ; still the implement requires 

 great power and hardly produces a corresponding advantage in the sample. 



