Report on the Triah of Implements at Cardiff. 409 
storing the quantity of corn required for each machine, the part 
of the loft between the two machines beinj;;- h)wered to bring'it 
level with their feed- . mi 7 ■, • r,, i 
ing boards (Fig. 3). ^^S- o.— Section of Thres/unrj-machine Shed. 
While the machine on 
ane side of this loft 
3r feeding stage was 
being tried, a second 
machine was brought 
into position on the 
Jther side. Upon a 
ihort tramway,covered 
by an awning in front of this part of the shed (Fig. 3, a, and 
Fig. 4), a strong wooden truck was drawn backward and forward 
by means of a winch and chain ; this truck carried both the 
!;ngine employed to drive the threshing machines, and the dyna- 
mometer used to indicate the exact amount of power absorbed in 
ioing the work. 
In the annexed sketch (Fig. 4) A is the engine — one of Messrs. 
A.veling and Porter's 8-horse power semi-fixed ; Ban intermediate 
Fig. 4, — Slieich of the Engine-truck and winch used in the Trials of 
Threshing Machines. 
fa 
ihafting : C the dynamometer ; D the registering apparatus ; 
5 the winch ; F the chain attached to the near end of the 
ruck ; G the chain from the further end of the truck, passing 
ound the snatch-block to the winch; H is the truck. A belt 
rom the pulley of the dynamometer drove the machine to be 
ested. 
This arrangement is an improvement on that of the Bury 
rials, where the dynamometer was placed between the machine 
nd the engine, and driven by a straj>, instead of a shaft, from the 
atter ; there were then three machines and two belts to be adjusted 
ach time, and the dynamometer being placed on the ground, a 
jpecial adjustment was required to keep the driving belt clear of 
