The Trials of Thresldng Mcwiiines at Doncaster. 495 
outside of the machiue. The good grain passes along the louvre 
boards into a passage which leads it into a rotary screen, which 
separates it into its various qualities, when it is delivered through 
shoots into the sacks. By adjusting suitable shutters the corn 
can be sent down to the sacks without passing through the 
smutter. 
The machine was well framed, the bearings of the drum 
spindle being arranged in a casting which fits in between the 
verticals of the machine framing ; the same casting contains the 
adjustments of the concave, making a very compact and strong 
arrangement ; the main bearing pedestals are inclined at 45°. 
In working, the machine was merely secured by quoins under 
the hind wheels, yet it was remarkably steady, and on effecting 
the various movements by hand it was evident that the balance 
throughout was very good. 
Needle lubricators, neatly protected by suitable sockets pro- 
vided on the pedestals, are in use on every bearing of importance. 
The safety arrangement over drum aperture seems adequate. 
It consists of a rectangular hood, the top board of which 
can be advanced over the aperture as may be desired, and the 
feeding board is hinged so as to fold over the opening if 
pushed against. The whole arrangement has its sides hinged to 
the machine so that they can be put down flat for travelling. 
Tasliers Machine. — The drum of this machine (see opposite 
page) is 21^ in. diameter by 4 ft. 6 in. long. The blast is worked 
by one fan (F) alone, there being three directions in which the 
air is delivered, as shown on accompanying diagram (ilf, Jl/', M^), 
which also clearly indicates the course taken by the grain during 
the process of threshing and separating. 
The protection to the drum opening is good in design ; 
a curved hood folds over the opening, by pressure either on the 
feeding board or applied direct to the hood. The opening, how- 
ever, appears to be too large, so that with its present setting 
the protection will not be of much use. 
The awner and smutter are in one, and consist of a conical 
cylinder ribbed internally, and having working inside it four 
arms terminating in bars of about 2 in. by ^ in., set a little 
spirally. The amount of work done can be regulated by altering 
the delivery opening. The screen is of the ordinary kind, 
except that the wires are of a V-section, the point of the V being 
turned inwards. In working, the hind wheels of the machine 
are secured by scotches, and also by a strap from the frame of 
the machine to the rim of the wheels. The machine is lighter 
than the others. 
Gibbons and Robinson's Machine. — This machine (see p. 496) 
