Report on the Trials of Implements at Reading. 649 
and wheel, to a crank shaft which crosses under the trough of the machine at 
its extreme end, and actuates a connecting-rod which communicates a recipro- 
cating motion to the screen. Tlie cranlc-shaft also, at its further end, com- 
municates its motion to an upright sliaft placed at the extreme end and on 
one side of the trough ; and tins upright, by means of bevel wheels, actuates 
the multiple crank-shaft which works the prongs. On the opposite side of 
the machine is a similar arrangement, deriving its motion more directly from 
the crank-shaft from tlic fan. 
The rate of traverse of the hay while it is being dried depends upon the 
inclination given to the screen and to the lateral set given to the prongs. 
On the 1st of July, when the Judges made their preliminary 
inspection of Implements in the Showyard, they saw — 
1. The Hay Dryer, like a gigantic straw elevator, guarded on 
each side with a cJieval de frise of vicious-looking prongs, and 
mounted on four wheels. One of the Judges gave this cumbrous 
and unwieldy article the appropriate name of " Jumbo," by 
which name it was thenceforth known. When the order for its 
removal to the trial ground was given, Mr. Carey, Assistant 
Engineer, was sorely exercised about getting it over the narrow 
bridge which was the only entrance to the Fobney meadows, as 
the width of the wheels was greater than the space between the 
fixed iron guards of the bridge ; but this difficulty was sur- 
mounted by raising the machine sufficiently for the hubs of the 
wheels to run above the bridge-guards. This part of the 
machine required four horses to move it. 
2. The furnace and fan, with a big trunk elevated in the air, 
and designed to convey the hot blast to the dryer (No. 1). As 
the consort of " Jumbo," this part of the apparatus was nick- 
named "Alice." It was mounted on two wheels, and required 
two horses to move it, 
3. A tumbrel containing standards and windlass for support- 
ing and regulating the height of the delivery end of the dryer 
when at work : and sundry tools and odds and ends required 
for working. 
4. In addition to these parts, which complete the apparatus 
itself, an engine of 8-horse-povver is required to work the 
machine. 
The trial of this apparatus in the field will be recorded here- 
after ; but it may be mentioned here, that when an occasion for 
moving it from one situation to another occurred, it was found 
that about two hours were occupied in getting the whole thing 
under weigh, and eleven horses were required for the removal. 
Sub-Class B. 
Exhaust Faxs: — Xeilson System. 
All the machines and appliances included in this sub-class 
are designed for working the " Neilson System " of drying hay 
