Report on the Trials of Implements at Cardiff. 475 
[of the double sections are furnished with springs, which clasp the longitudinal 
'bars, D. In setting the screen tlie mid-rib is drawn out or pushed back 
ii'jjitudinally ; the outer bars ol' the section only move laterally and are 
.arest together when the cross bars are in an oblique position and the screen 
set close. G is a light cast-iron drum for receiving the corn from the hopper; 
it is bolted to the casting, A, which also carries the stone separator through 
'which the grain falls in its passage to the screen itself. 
! The small cross-bars of the screen are of a triangular shape, so that its 
interior presents a series of small ridges-and-furrows. The trough shape of 
the outlets for the grain facilitates the delivery of whatever is small enough 
to pass through the spaces. The continuity of the stream of grain is broken 
liy the diagonal position of the cross-bars and the edges of the longitudinal 
bars, but it is somewhat dee[icr than in the screens that are fitted with an 
Archimedian screw. It is noticeable that this screen did not clear itself for 
<i>me time after the supply of corn had ceased to run into it, this indicates that 
I is only the upj^er layer of the stream that moves freely down the barrel, by 
hiding over the corn beneath it ; although the corn that is uppermost at one 
tune will be imdermost at another, it is better that each grain should be in 
contact with the screening surface, as far as possible, throughout the whole 
if its passage. It is in this point that the superiority of Mr. Boby's screen 
\\ :is most marked. Although the length of screen surface traversed by the 
liu was in the rotary screens more than six times their diameter, and far 
_ , cater than in the oscillating screen, yet in the latter the stream was rarely 
more than one grain deep, and the separation more thoroughly effected. None 
of the work, however, in this class was badly performed, and it will be noticed 
that all the machines tried more than once are commended. 
A recent improvement has been introduced in this screen by the substitution 
of a leather roller in place of the revolving brush ; the roller is held against the 
loutside of the screen by curved springs, and is raised by each angle of the 
ftwelve-sided barrel passing under it; it thus cleans the screen by a constant 
succession of slight taps upon each of its sides. 
The awards in this Class were as follows : — 
Corn Screens. — Robert Boby, Bury St. Edmunds : First Prize, 101. Richard 
Homsby and Sons, Grantham : Second Prize, 5?. Coleman and Morton, 
Chelmsford : Highly Commended. W. Rainforth and Son : Highly Com- 
mended. Thomas Corbett, Shrewsbury : Commended, Penney and Co, 
(Limited), Lincoln : Commended. 
Miscellaneous Articles. 
The introduction of the rule that prevents any commendation 
of miscellaneous articles lessens considerably the apparent results 
of the labours of the Judges in this class ; but, although the 
record of their observations is confined to those articles that 
obtained a Silver Medal, the labour of inspecting each of the 
308 stands of implements was one that needed great patience as 
well as good judgment. After examining implements of all 
sorts and sizes, from the powerful stone-breaker down to the 
delicate lemon-squeezer, they found, during the first two days of 
their work, but two implements of fitting merit. Subsequently 
they had better success, but, after trying several other novelties, 
